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Date: Sat, 8 Oct 2016 15:12:24 +0200 (CEST)
From: Thomas Gleixner <tglx@...utronix.de>
To: Linus Torvalds <torvalds@...ux-foundation.org>
cc: LKML <linux-kernel@...r.kernel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Ingo Molnar <mingo@...nel.org>,
"H. Peter Anvin" <hpa@...or.com>
Subject: [GIT pull] perf updates for 4.9
Linus,
please pull the latest perf-urgent-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf-urgent-for-linus
This update contains:
- Handle uretprobe placement proper on little endian PPC64
- Fix buffer handling in libtraceevent.
- Add a missing pointer derefence in perf probe.
- Fix the build of host tools in cross builds.
- Fix Intel PT timestamp handling
- Synchronize memcpy, cpufeatures and bpf headers with the kernel headers.
- Support for vendor supplied JSON files describing PMU events.
- A new set of tool tips.
- Initial work for clang/llvm support.
- Address some style issues found by cppcheck
Thanks,
tglx
------------------>
Adrian Hunter (2):
perf intel-pt: Fix estimated timestamps for cycle-accurate mode
perf intel-pt: Fix MTC timestamp calculation for large MTC periods
Andi Kleen (13):
perf tools: Add jsmn `jasmine' JSON parser
perf jevents: Program to convert JSON file
perf tools: Support CPU id matching for x86 v2
perf jevents: Handle header line in mapfile
perf pmu: Support alias descriptions
perf tools: Query terminal width and use in perf list
perf list: Add a --no-desc flag
perf pmu: Add override support for event list CPUID
perf list jevents: Add support for event list topics
perf tools: Make alias matching case-insensitive
perf pmu-events: Fix fixed counters on Intel
perf pmu-events: Add Skylake frontend MSR support
perf jevents: Fix Intel JSON fixed counter conversions
Arnaldo Carvalho de Melo (4):
perf tools: Experiment with cppcheck
perf bench mem: Sync memcpy assembly sources with the kernel
tools: Synchronize tools/arch/x86/include/asm/cpufeatures.h
tools: Synchronize tools/include/uapi/linux/bpf.h
Colin Ian King (1):
perf probe: Check if *ptr2 is zero and not ptr2
Donghyun Kim (1):
perf report/top: Add a tip about system-wide collection from all CPUs
Jiri Olsa (2):
tools build: Add support for host programs format
tools build: Make fixdep a hostprog
Kim SeonYoung (1):
perf report/top: Add a tip about source line numbers with overhead
Nambong Ha (1):
perf top/report: Add tips about a list option
Namhyung Kim (1):
tools lib traceevent: Fix kbuffer_read_at_offset()
Ravi Bangoria (1):
perf uretprobe ppc64le: Fix probe location
Sukadev Bhattiprolu (6):
perf pmu: Use pmu_events table to create aliases
perf powerpc: Support CPU ID matching for Powerpc
perf jevents: Add support for long descriptions
perf list: Support long jevents descriptions
perf tools: Add README for info on parsing JSON/map files
perf tools: Allow period= in perf stat CPU event descriptions.
Wang Nan (2):
tools build: Support compiling C++ source file
tools build: Add feature detection for g++
tools/arch/x86/include/asm/cpufeatures.h | 1 -
tools/arch/x86/lib/memcpy_64.S | 6 +-
tools/build/Build | 2 +
tools/build/Build.include | 6 +
tools/build/Makefile | 8 +-
tools/build/Makefile.build | 26 +-
tools/build/Makefile.feature | 2 +-
tools/build/Makefile.include | 4 -
tools/build/feature/Makefile | 10 +-
tools/build/feature/test-cxx.cpp | 15 +
tools/include/uapi/linux/bpf.h | 4 +-
tools/lib/subcmd/pager.c | 16 +
tools/lib/subcmd/pager.h | 1 +
tools/lib/traceevent/kbuffer-parse.c | 1 +
tools/perf/Documentation/perf-list.txt | 12 +-
tools/perf/Documentation/tips.txt | 4 +
tools/perf/Makefile.perf | 34 +-
tools/perf/arch/powerpc/util/header.c | 11 +
tools/perf/arch/powerpc/util/sym-handling.c | 3 +-
tools/perf/arch/x86/util/header.c | 24 +-
tools/perf/builtin-list.c | 20 +-
tools/perf/pmu-events/Build | 13 +
tools/perf/pmu-events/README | 147 ++++
tools/perf/pmu-events/jevents.c | 814 +++++++++++++++++++++
tools/perf/pmu-events/jevents.h | 18 +
tools/perf/pmu-events/jsmn.c | 313 ++++++++
tools/perf/pmu-events/jsmn.h | 67 ++
tools/perf/pmu-events/json.c | 162 ++++
tools/perf/pmu-events/json.h | 38 +
tools/perf/pmu-events/pmu-events.h | 37 +
tools/perf/util/evlist.c | 12 +-
tools/perf/util/evsel.c | 3 +-
tools/perf/util/header.h | 1 +
.../perf/util/intel-pt-decoder/intel-pt-decoder.c | 38 +
tools/perf/util/machine.c | 6 +-
tools/perf/util/parse-events.c | 8 +-
tools/perf/util/parse-events.h | 3 +-
tools/perf/util/pmu.c | 176 ++++-
tools/perf/util/pmu.h | 6 +-
tools/perf/util/probe-event.c | 2 +-
tools/perf/util/strbuf.h | 3 +-
tools/perf/util/thread.c | 9 +-
42 files changed, 2011 insertions(+), 75 deletions(-)
create mode 100644 tools/build/feature/test-cxx.cpp
create mode 100644 tools/perf/pmu-events/Build
create mode 100644 tools/perf/pmu-events/README
create mode 100644 tools/perf/pmu-events/jevents.c
create mode 100644 tools/perf/pmu-events/jevents.h
create mode 100644 tools/perf/pmu-events/jsmn.c
create mode 100644 tools/perf/pmu-events/jsmn.h
create mode 100644 tools/perf/pmu-events/json.c
create mode 100644 tools/perf/pmu-events/json.h
create mode 100644 tools/perf/pmu-events/pmu-events.h
diff --git a/tools/arch/x86/include/asm/cpufeatures.h b/tools/arch/x86/include/asm/cpufeatures.h
index 92a8308b96f6..1188bc849ee3 100644
--- a/tools/arch/x86/include/asm/cpufeatures.h
+++ b/tools/arch/x86/include/asm/cpufeatures.h
@@ -106,7 +106,6 @@
#define X86_FEATURE_APERFMPERF ( 3*32+28) /* APERFMPERF */
#define X86_FEATURE_EAGER_FPU ( 3*32+29) /* "eagerfpu" Non lazy FPU restore */
#define X86_FEATURE_NONSTOP_TSC_S3 ( 3*32+30) /* TSC doesn't stop in S3 state */
-#define X86_FEATURE_MCE_RECOVERY ( 3*32+31) /* cpu has recoverable machine checks */
/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
#define X86_FEATURE_XMM3 ( 4*32+ 0) /* "pni" SSE-3 */
diff --git a/tools/arch/x86/lib/memcpy_64.S b/tools/arch/x86/lib/memcpy_64.S
index 2ec0b0abbfaa..49e6ebac7e73 100644
--- a/tools/arch/x86/lib/memcpy_64.S
+++ b/tools/arch/x86/lib/memcpy_64.S
@@ -181,11 +181,11 @@ ENDPROC(memcpy_orig)
#ifndef CONFIG_UML
/*
- * memcpy_mcsafe - memory copy with machine check exception handling
+ * memcpy_mcsafe_unrolled - memory copy with machine check exception handling
* Note that we only catch machine checks when reading the source addresses.
* Writes to target are posted and don't generate machine checks.
*/
-ENTRY(memcpy_mcsafe)
+ENTRY(memcpy_mcsafe_unrolled)
cmpl $8, %edx
/* Less than 8 bytes? Go to byte copy loop */
jb .L_no_whole_words
@@ -273,7 +273,7 @@ ENTRY(memcpy_mcsafe)
.L_done_memcpy_trap:
xorq %rax, %rax
ret
-ENDPROC(memcpy_mcsafe)
+ENDPROC(memcpy_mcsafe_unrolled)
.section .fixup, "ax"
/* Return -EFAULT for any failure */
diff --git a/tools/build/Build b/tools/build/Build
index 63a6c34c0c88..76d1a4960973 100644
--- a/tools/build/Build
+++ b/tools/build/Build
@@ -1 +1,3 @@
+hostprogs := fixdep
+
fixdep-y := fixdep.o
diff --git a/tools/build/Build.include b/tools/build/Build.include
index 4d000bc959b4..1dcb95e76f70 100644
--- a/tools/build/Build.include
+++ b/tools/build/Build.include
@@ -90,3 +90,9 @@ if_changed = $(if $(strip $(any-prereq) $(arg-check)), \
# - per object C flags
# - BUILD_STR macro to allow '-D"$(variable)"' constructs
c_flags = -Wp,-MD,$(depfile),-MT,$@ $(CFLAGS) -D"BUILD_STR(s)=\#s" $(CFLAGS_$(basetarget).o) $(CFLAGS_$(obj))
+cxx_flags = -Wp,-MD,$(depfile),-MT,$@ $(CXXFLAGS) -D"BUILD_STR(s)=\#s" $(CXXFLAGS_$(basetarget).o) $(CXXFLAGS_$(obj))
+
+###
+## HOSTCC C flags
+
+host_c_flags = -Wp,-MD,$(depfile),-MT,$@ $(CHOSTFLAGS) -D"BUILD_STR(s)=\#s" $(CHOSTFLAGS_$(basetarget).o) $(CHOSTFLAGS_$(obj))
diff --git a/tools/build/Makefile b/tools/build/Makefile
index 0d5a0e3a8fa9..8332959fbca4 100644
--- a/tools/build/Makefile
+++ b/tools/build/Makefile
@@ -14,6 +14,12 @@ endef
$(call allow-override,CC,$(CROSS_COMPILE)gcc)
$(call allow-override,LD,$(CROSS_COMPILE)ld)
+HOSTCC ?= gcc
+HOSTLD ?= ld
+HOSTAR ?= ar
+
+export HOSTCC HOSTLD HOSTAR
+
ifeq ($(V),1)
Q =
else
@@ -36,7 +42,7 @@ $(OUTPUT)fixdep-in.o: FORCE
$(Q)$(MAKE) $(build)=fixdep
$(OUTPUT)fixdep: $(OUTPUT)fixdep-in.o
- $(QUIET_LINK)$(CC) $(LDFLAGS) -o $@ $<
+ $(QUIET_LINK)$(HOSTCC) $(LDFLAGS) -o $@ $<
FORCE:
diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
index 27f3583193e6..99c0ccd2f176 100644
--- a/tools/build/Makefile.build
+++ b/tools/build/Makefile.build
@@ -58,6 +58,12 @@ quiet_cmd_mkdir = MKDIR $(dir $@)
quiet_cmd_cc_o_c = CC $@
cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
+quiet_cmd_host_cc_o_c = HOSTCC $@
+ cmd_host_cc_o_c = $(HOSTCC) $(host_c_flags) -c -o $@ $<
+
+quiet_cmd_cxx_o_c = CXX $@
+ cmd_cxx_o_c = $(CXX) $(cxx_flags) -c -o $@ $<
+
quiet_cmd_cpp_i_c = CPP $@
cmd_cpp_i_c = $(CC) $(c_flags) -E -o $@ $<
@@ -70,16 +76,28 @@ quiet_cmd_gen = GEN $@
# If there's nothing to link, create empty $@ object.
quiet_cmd_ld_multi = LD $@
cmd_ld_multi = $(if $(strip $(obj-y)),\
- $(LD) -r -o $@ $(filter $(obj-y),$^),rm -f $@; $(AR) rcs $@)
+ $(LD) -r -o $@ $(filter $(obj-y),$^),rm -f $@; $(AR) rcs $@)
+
+quiet_cmd_host_ld_multi = HOSTLD $@
+ cmd_host_ld_multi = $(if $(strip $(obj-y)),\
+ $(HOSTLD) -r -o $@ $(filter $(obj-y),$^),rm -f $@; $(HOSTAR) rcs $@)
+
+ifneq ($(filter $(obj),$(hostprogs)),)
+ host = host_
+endif
# Build rules
$(OUTPUT)%.o: %.c FORCE
$(call rule_mkdir)
- $(call if_changed_dep,cc_o_c)
+ $(call if_changed_dep,$(host)cc_o_c)
+
+$(OUTPUT)%.o: %.cpp FORCE
+ $(call rule_mkdir)
+ $(call if_changed_dep,cxx_o_c)
$(OUTPUT)%.o: %.S FORCE
$(call rule_mkdir)
- $(call if_changed_dep,cc_o_c)
+ $(call if_changed_dep,$(host)cc_o_c)
$(OUTPUT)%.i: %.c FORCE
$(call rule_mkdir)
@@ -119,7 +137,7 @@ $(sort $(subdir-obj-y)): $(subdir-y) ;
$(in-target): $(obj-y) FORCE
$(call rule_mkdir)
- $(call if_changed,ld_multi)
+ $(call if_changed,$(host)ld_multi)
__build: $(in-target)
@:
diff --git a/tools/build/Makefile.feature b/tools/build/Makefile.feature
index a120c6b755a9..ae52e029dd22 100644
--- a/tools/build/Makefile.feature
+++ b/tools/build/Makefile.feature
@@ -7,7 +7,7 @@ endif
feature_check = $(eval $(feature_check_code))
define feature_check_code
- feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) $(OUTPUT_FEATURES)test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
+ feature-$(1) := $(shell $(MAKE) OUTPUT=$(OUTPUT_FEATURES) CFLAGS="$(EXTRA_CFLAGS) $(FEATURE_CHECK_CFLAGS-$(1))" CXXFLAGS="$(EXTRA_CXXFLAGS) $(FEATURE_CHECK_CXXFLAGS-$(1))" LDFLAGS="$(LDFLAGS) $(FEATURE_CHECK_LDFLAGS-$(1))" -C $(feature_dir) $(OUTPUT_FEATURES)test-$1.bin >/dev/null 2>/dev/null && echo 1 || echo 0)
endef
feature_set = $(eval $(feature_set_code))
diff --git a/tools/build/Makefile.include b/tools/build/Makefile.include
index be630bed66d2..ad22e4e7bc59 100644
--- a/tools/build/Makefile.include
+++ b/tools/build/Makefile.include
@@ -1,10 +1,6 @@
build := -f $(srctree)/tools/build/Makefile.build dir=. obj
-ifdef CROSS_COMPILE
-fixdep:
-else
fixdep:
$(Q)$(MAKE) -C $(srctree)/tools/build CFLAGS= LDFLAGS= $(OUTPUT)fixdep
-endif
.PHONY: fixdep
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index a0b29a311816..ac9c477a2a48 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -46,11 +46,13 @@ FILES= \
test-lzma.bin \
test-bpf.bin \
test-get_cpuid.bin \
- test-sdt.bin
+ test-sdt.bin \
+ test-cxx.bin
FILES := $(addprefix $(OUTPUT),$(FILES))
CC := $(CROSS_COMPILE)gcc -MD
+CXX := $(CROSS_COMPILE)g++ -MD
PKG_CONFIG := $(CROSS_COMPILE)pkg-config
all: $(FILES)
@@ -58,6 +60,9 @@ all: $(FILES)
__BUILD = $(CC) $(CFLAGS) -Wall -Werror -o $@ $(patsubst %.bin,%.c,$(@F)) $(LDFLAGS)
BUILD = $(__BUILD) > $(@:.bin=.make.output) 2>&1
+__BUILDXX = $(CXX) $(CXXFLAGS) -Wall -Werror -o $@ $(patsubst %.bin,%.cpp,$(@F)) $(LDFLAGS)
+ BUILDXX = $(__BUILDXX) > $(@:.bin=.make.output) 2>&1
+
###############################
$(OUTPUT)test-all.bin:
@@ -217,6 +222,9 @@ $(OUTPUT)test-bpf.bin:
$(OUTPUT)test-sdt.bin:
$(BUILD)
+$(OUTPUT)test-cxx.bin:
+ $(BUILDXX) -std=gnu++11
+
-include $(OUTPUT)*.d
###############################
diff --git a/tools/build/feature/test-cxx.cpp b/tools/build/feature/test-cxx.cpp
new file mode 100644
index 000000000000..b1dee9a31d6c
--- /dev/null
+++ b/tools/build/feature/test-cxx.cpp
@@ -0,0 +1,15 @@
+#include <iostream>
+#include <memory>
+
+static void print_str(std::string s)
+{
+ std::cout << s << std::endl;
+}
+
+int main()
+{
+ std::string s("Hello World!");
+ print_str(std::move(s));
+ std::cout << "|" << s << "|" << std::endl;
+ return 0;
+}
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index da218fec6056..9e5fc168c8a3 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -339,7 +339,7 @@ enum bpf_func_id {
BPF_FUNC_skb_change_type,
/**
- * bpf_skb_in_cgroup(skb, map, index) - Check cgroup2 membership of skb
+ * bpf_skb_under_cgroup(skb, map, index) - Check cgroup2 membership of skb
* @skb: pointer to skb
* @map: pointer to bpf_map in BPF_MAP_TYPE_CGROUP_ARRAY type
* @index: index of the cgroup in the bpf_map
@@ -348,7 +348,7 @@ enum bpf_func_id {
* == 1 skb succeeded the cgroup2 descendant test
* < 0 error
*/
- BPF_FUNC_skb_in_cgroup,
+ BPF_FUNC_skb_under_cgroup,
/**
* bpf_get_hash_recalc(skb)
diff --git a/tools/lib/subcmd/pager.c b/tools/lib/subcmd/pager.c
index d50f3b58606b..6518bea926d6 100644
--- a/tools/lib/subcmd/pager.c
+++ b/tools/lib/subcmd/pager.c
@@ -3,6 +3,7 @@
#include <stdio.h>
#include <string.h>
#include <signal.h>
+#include <sys/ioctl.h>
#include "pager.h"
#include "run-command.h"
#include "sigchain.h"
@@ -14,6 +15,7 @@
*/
static int spawned_pager;
+static int pager_columns;
void pager_init(const char *pager_env)
{
@@ -58,9 +60,12 @@ static void wait_for_pager_signal(int signo)
void setup_pager(void)
{
const char *pager = getenv(subcmd_config.pager_env);
+ struct winsize sz;
if (!isatty(1))
return;
+ if (ioctl(1, TIOCGWINSZ, &sz) == 0)
+ pager_columns = sz.ws_col;
if (!pager)
pager = getenv("PAGER");
if (!(pager || access("/usr/bin/pager", X_OK)))
@@ -98,3 +103,14 @@ int pager_in_use(void)
{
return spawned_pager;
}
+
+int pager_get_columns(void)
+{
+ char *s;
+
+ s = getenv("COLUMNS");
+ if (s)
+ return atoi(s);
+
+ return (pager_columns ? pager_columns : 80) - 2;
+}
diff --git a/tools/lib/subcmd/pager.h b/tools/lib/subcmd/pager.h
index 8b83714ecf73..623f5542d05d 100644
--- a/tools/lib/subcmd/pager.h
+++ b/tools/lib/subcmd/pager.h
@@ -5,5 +5,6 @@ extern void pager_init(const char *pager_env);
extern void setup_pager(void);
extern int pager_in_use(void);
+extern int pager_get_columns(void);
#endif /* __SUBCMD_PAGER_H */
diff --git a/tools/lib/traceevent/kbuffer-parse.c b/tools/lib/traceevent/kbuffer-parse.c
index 3bcada3ae05a..65984f1c2974 100644
--- a/tools/lib/traceevent/kbuffer-parse.c
+++ b/tools/lib/traceevent/kbuffer-parse.c
@@ -622,6 +622,7 @@ void *kbuffer_read_at_offset(struct kbuffer *kbuf, int offset,
/* Reset the buffer */
kbuffer_load_subbuffer(kbuf, kbuf->subbuffer);
+ data = kbuffer_read_event(kbuf, ts);
while (kbuf->curr < offset) {
data = kbuffer_next_event(kbuf, ts);
diff --git a/tools/perf/Documentation/perf-list.txt b/tools/perf/Documentation/perf-list.txt
index a126e97a8114..41857cce5e86 100644
--- a/tools/perf/Documentation/perf-list.txt
+++ b/tools/perf/Documentation/perf-list.txt
@@ -8,13 +8,23 @@ perf-list - List all symbolic event types
SYNOPSIS
--------
[verse]
-'perf list' [hw|sw|cache|tracepoint|pmu|event_glob]
+'perf list' [--no-desc] [--long-desc] [hw|sw|cache|tracepoint|pmu|event_glob]
DESCRIPTION
-----------
This command displays the symbolic event types which can be selected in the
various perf commands with the -e option.
+OPTIONS
+-------
+--no-desc::
+Don't print descriptions.
+
+-v::
+--long-desc::
+Print longer event descriptions.
+
+
[[EVENT_MODIFIERS]]
EVENT MODIFIERS
---------------
diff --git a/tools/perf/Documentation/tips.txt b/tools/perf/Documentation/tips.txt
index 5950b5a24efd..8a6479c0eac9 100644
--- a/tools/perf/Documentation/tips.txt
+++ b/tools/perf/Documentation/tips.txt
@@ -28,3 +28,7 @@ To change sampling frequency to 100 Hz: perf record -F 100
See assembly instructions with percentage: perf annotate <symbol>
If you prefer Intel style assembly, try: perf annotate -M intel
For hierarchical output, try: perf report --hierarchy
+Order by the overhead of source file name and line number: perf report -s srcline
+System-wide collection from all CPUs: perf record -a
+Show current config key-value pairs: perf config --list
+Show user configuration overrides: perf config --user --list
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index d710db16b963..982d6439bb07 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -144,6 +144,10 @@ $(call allow-override,LD,$(CROSS_COMPILE)ld)
LD += $(EXTRA_LDFLAGS)
+HOSTCC ?= gcc
+HOSTLD ?= ld
+HOSTAR ?= ar
+
PKG_CONFIG = $(CROSS_COMPILE)pkg-config
RM = rm -f
@@ -345,8 +349,18 @@ strip: $(PROGRAMS) $(OUTPUT)perf
PERF_IN := $(OUTPUT)perf-in.o
export srctree OUTPUT RM CC LD AR CFLAGS V BISON FLEX AWK
+export HOSTCC HOSTLD HOSTAR
include $(srctree)/tools/build/Makefile.include
+JEVENTS := $(OUTPUT)pmu-events/jevents
+JEVENTS_IN := $(OUTPUT)pmu-events/jevents-in.o
+
+PMU_EVENTS_IN := $(OUTPUT)pmu-events/pmu-events-in.o
+
+export JEVENTS
+
+build := -f $(srctree)/tools/build/Makefile.build dir=. obj
+
$(PERF_IN): prepare FORCE
@(test -f ../../include/uapi/linux/perf_event.h && ( \
(diff -B ../include/uapi/linux/perf_event.h ../../include/uapi/linux/perf_event.h >/dev/null) \
@@ -443,9 +457,18 @@ $(PERF_IN): prepare FORCE
|| echo "Warning: tools/include/uapi/linux/mman.h differs from kernel" >&2 )) || true
$(Q)$(MAKE) $(build)=perf
-$(OUTPUT)perf: $(PERFLIBS) $(PERF_IN) $(LIBTRACEEVENT_DYNAMIC_LIST)
+$(JEVENTS_IN): FORCE
+ $(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=pmu-events obj=jevents
+
+$(JEVENTS): $(JEVENTS_IN)
+ $(QUIET_LINK)$(HOSTCC) $(JEVENTS_IN) -o $@
+
+$(PMU_EVENTS_IN): $(JEVENTS) FORCE
+ $(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=pmu-events obj=pmu-events
+
+$(OUTPUT)perf: $(PERFLIBS) $(PERF_IN) $(PMU_EVENTS_IN) $(LIBTRACEEVENT_DYNAMIC_LIST)
$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $(LIBTRACEEVENT_DYNAMIC_LIST_LDFLAGS) \
- $(PERF_IN) $(LIBS) -o $@
+ $(PERF_IN) $(PMU_EVENTS_IN) $(LIBS) -o $@
$(GTK_IN): fixdep FORCE
$(Q)$(MAKE) $(build)=gtk
@@ -474,6 +497,8 @@ perf.spec $(SCRIPTS) \
ifneq ($(OUTPUT),)
%.o: $(OUTPUT)%.o
@echo " # Redirected target $@ => $(OUTPUT)$@"
+pmu-events/%.o: $(OUTPUT)pmu-events/%.o
+ @echo " # Redirected target $@ => $(OUTPUT)$@"
util/%.o: $(OUTPUT)util/%.o
@echo " # Redirected target $@ => $(OUTPUT)$@"
bench/%.o: $(OUTPUT)bench/%.o
@@ -729,10 +754,11 @@ clean:: $(LIBTRACEEVENT)-clean $(LIBAPI)-clean $(LIBBPF)-clean $(LIBSUBCMD)-clea
$(call QUIET_CLEAN, core-objs) $(RM) $(LIB_FILE) $(OUTPUT)perf-archive $(OUTPUT)perf-with-kcore $(LANG_BINDINGS)
$(Q)find $(if $(OUTPUT),$(OUTPUT),.) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
$(Q)$(RM) $(OUTPUT).config-detected
- $(call QUIET_CLEAN, core-progs) $(RM) $(ALL_PROGRAMS) perf perf-read-vdso32 perf-read-vdsox32
+ $(call QUIET_CLEAN, core-progs) $(RM) $(ALL_PROGRAMS) perf perf-read-vdso32 perf-read-vdsox32 $(OUTPUT)pmu-events/jevents
$(call QUIET_CLEAN, core-gen) $(RM) *.spec *.pyc *.pyo */*.pyc */*.pyo $(OUTPUT)common-cmds.h TAGS tags cscope* $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)FEATURE-DUMP $(OUTPUT)util/*-bison* $(OUTPUT)util/*-flex* \
$(OUTPUT)util/intel-pt-decoder/inat-tables.c $(OUTPUT)fixdep \
- $(OUTPUT)tests/llvm-src-{base,kbuild,prologue,relocation}.c
+ $(OUTPUT)tests/llvm-src-{base,kbuild,prologue,relocation}.c \
+ $(OUTPUT)pmu-events/pmu-events.c
$(QUIET_SUBDIR0)Documentation $(QUIET_SUBDIR1) clean
$(python-clean)
diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c
index f8ccee132867..9aaa6f5a9347 100644
--- a/tools/perf/arch/powerpc/util/header.c
+++ b/tools/perf/arch/powerpc/util/header.c
@@ -32,3 +32,14 @@ get_cpuid(char *buffer, size_t sz)
}
return -1;
}
+
+char *
+get_cpuid_str(void)
+{
+ char *bufp;
+
+ if (asprintf(&bufp, "%.8lx", mfspr(SPRN_PVR)) < 0)
+ bufp = NULL;
+
+ return bufp;
+}
diff --git a/tools/perf/arch/powerpc/util/sym-handling.c b/tools/perf/arch/powerpc/util/sym-handling.c
index ed9d5d15d5b6..1030a6e504bb 100644
--- a/tools/perf/arch/powerpc/util/sym-handling.c
+++ b/tools/perf/arch/powerpc/util/sym-handling.c
@@ -82,7 +82,8 @@ void arch__fix_tev_from_maps(struct perf_probe_event *pev,
*
* In addition, we shouldn't specify an offset for kretprobes.
*/
- if (pev->point.offset || pev->point.retprobe || !map || !sym)
+ if (pev->point.offset || (!pev->uprobes && pev->point.retprobe) ||
+ !map || !sym)
return;
lep_offset = PPC64_LOCAL_ENTRY_OFFSET(sym->arch_sym);
diff --git a/tools/perf/arch/x86/util/header.c b/tools/perf/arch/x86/util/header.c
index 146d12a1cec0..a74a48db26f5 100644
--- a/tools/perf/arch/x86/util/header.c
+++ b/tools/perf/arch/x86/util/header.c
@@ -19,8 +19,8 @@ cpuid(unsigned int op, unsigned int *a, unsigned int *b, unsigned int *c,
: "a" (op));
}
-int
-get_cpuid(char *buffer, size_t sz)
+static int
+__get_cpuid(char *buffer, size_t sz, const char *fmt)
{
unsigned int a, b, c, d, lvl;
int family = -1, model = -1, step = -1;
@@ -48,7 +48,7 @@ get_cpuid(char *buffer, size_t sz)
if (family >= 0x6)
model += ((a >> 16) & 0xf) << 4;
}
- nb = scnprintf(buffer, sz, "%s,%u,%u,%u$", vendor, family, model, step);
+ nb = scnprintf(buffer, sz, fmt, vendor, family, model, step);
/* look for end marker to ensure the entire data fit */
if (strchr(buffer, '$')) {
@@ -57,3 +57,21 @@ get_cpuid(char *buffer, size_t sz)
}
return -1;
}
+
+int
+get_cpuid(char *buffer, size_t sz)
+{
+ return __get_cpuid(buffer, sz, "%s,%u,%u,%u$");
+}
+
+char *
+get_cpuid_str(void)
+{
+ char *buf = malloc(128);
+
+ if (__get_cpuid(buf, 128, "%s-%u-%X$") < 0) {
+ free(buf);
+ return NULL;
+ }
+ return buf;
+}
diff --git a/tools/perf/builtin-list.c b/tools/perf/builtin-list.c
index 88ee419e5189..ba9322ff858b 100644
--- a/tools/perf/builtin-list.c
+++ b/tools/perf/builtin-list.c
@@ -16,16 +16,23 @@
#include "util/pmu.h"
#include <subcmd/parse-options.h>
+static bool desc_flag = true;
+
int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
{
int i;
bool raw_dump = false;
+ bool long_desc_flag = false;
struct option list_options[] = {
OPT_BOOLEAN(0, "raw-dump", &raw_dump, "Dump raw events"),
+ OPT_BOOLEAN('d', "desc", &desc_flag,
+ "Print extra event descriptions. --no-desc to not print."),
+ OPT_BOOLEAN('v', "long-desc", &long_desc_flag,
+ "Print longer event descriptions."),
OPT_END()
};
const char * const list_usage[] = {
- "perf list [hw|sw|cache|tracepoint|pmu|sdt|event_glob]",
+ "perf list [<options>] [hw|sw|cache|tracepoint|pmu|sdt|event_glob]",
NULL
};
@@ -40,7 +47,7 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
printf("\nList of pre-defined events (to be used in -e):\n\n");
if (argc == 0) {
- print_events(NULL, raw_dump);
+ print_events(NULL, raw_dump, !desc_flag, long_desc_flag);
return 0;
}
@@ -61,14 +68,16 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
strcmp(argv[i], "hwcache") == 0)
print_hwcache_events(NULL, raw_dump);
else if (strcmp(argv[i], "pmu") == 0)
- print_pmu_events(NULL, raw_dump);
+ print_pmu_events(NULL, raw_dump, !desc_flag,
+ long_desc_flag);
else if (strcmp(argv[i], "sdt") == 0)
print_sdt_events(NULL, NULL, raw_dump);
else if ((sep = strchr(argv[i], ':')) != NULL) {
int sep_idx;
if (sep == NULL) {
- print_events(argv[i], raw_dump);
+ print_events(argv[i], raw_dump, !desc_flag,
+ long_desc_flag);
continue;
}
sep_idx = sep - argv[i];
@@ -90,7 +99,8 @@ int cmd_list(int argc, const char **argv, const char *prefix __maybe_unused)
print_symbol_events(s, PERF_TYPE_SOFTWARE,
event_symbols_sw, PERF_COUNT_SW_MAX, raw_dump);
print_hwcache_events(s, raw_dump);
- print_pmu_events(s, raw_dump);
+ print_pmu_events(s, raw_dump, !desc_flag,
+ long_desc_flag);
print_tracepoint_events(NULL, s, raw_dump);
print_sdt_events(NULL, s, raw_dump);
free(s);
diff --git a/tools/perf/pmu-events/Build b/tools/perf/pmu-events/Build
new file mode 100644
index 000000000000..9213a1273697
--- /dev/null
+++ b/tools/perf/pmu-events/Build
@@ -0,0 +1,13 @@
+hostprogs := jevents
+
+jevents-y += json.o jsmn.o jevents.o
+pmu-events-y += pmu-events.o
+JDIR = pmu-events/arch/$(ARCH)
+JSON = $(shell [ -d $(JDIR) ] && \
+ find $(JDIR) -name '*.json' -o -name 'mapfile.csv')
+#
+# Locate/process JSON files in pmu-events/arch/
+# directory and create tables in pmu-events.c.
+#
+$(OUTPUT)pmu-events/pmu-events.c: $(JSON) $(JEVENTS)
+ $(Q)$(call echo-cmd,gen)$(JEVENTS) $(ARCH) pmu-events/arch $(OUTPUT)pmu-events/pmu-events.c $(V)
diff --git a/tools/perf/pmu-events/README b/tools/perf/pmu-events/README
new file mode 100644
index 000000000000..1408ade0d773
--- /dev/null
+++ b/tools/perf/pmu-events/README
@@ -0,0 +1,147 @@
+
+The contents of this directory allow users to specify PMU events in their
+CPUs by their symbolic names rather than raw event codes (see example below).
+
+The main program in this directory, is the 'jevents', which is built and
+executed _BEFORE_ the perf binary itself is built.
+
+The 'jevents' program tries to locate and process JSON files in the directory
+tree tools/perf/pmu-events/arch/foo.
+
+ - Regular files with '.json' extension in the name are assumed to be
+ JSON files, each of which describes a set of PMU events.
+
+ - Regular files with basename starting with 'mapfile.csv' are assumed
+ to be a CSV file that maps a specific CPU to its set of PMU events.
+ (see below for mapfile format)
+
+ - Directories are traversed, but all other files are ignored.
+
+The PMU events supported by a CPU model are expected to grouped into topics
+such as Pipelining, Cache, Memory, Floating-point etc. All events for a topic
+should be placed in a separate JSON file - where the file name identifies
+the topic. Eg: "Floating-point.json".
+
+All the topic JSON files for a CPU model/family should be in a separate
+sub directory. Thus for the Silvermont X86 CPU:
+
+ $ ls tools/perf/pmu-events/arch/x86/Silvermont_core
+ Cache.json Memory.json Virtual-Memory.json
+ Frontend.json Pipeline.json
+
+Using the JSON files and the mapfile, 'jevents' generates the C source file,
+'pmu-events.c', which encodes the two sets of tables:
+
+ - Set of 'PMU events tables' for all known CPUs in the architecture,
+ (one table like the following, per JSON file; table name 'pme_power8'
+ is derived from JSON file name, 'power8.json').
+
+ struct pmu_event pme_power8[] = {
+
+ ...
+
+ {
+ .name = "pm_1plus_ppc_cmpl",
+ .event = "event=0x100f2",
+ .desc = "1 or more ppc insts finished,",
+ },
+
+ ...
+ }
+
+ - A 'mapping table' that maps each CPU of the architecture, to its
+ 'PMU events table'
+
+ struct pmu_events_map pmu_events_map[] = {
+ {
+ .cpuid = "004b0000",
+ .version = "1",
+ .type = "core",
+ .table = pme_power8
+ },
+ ...
+
+ };
+
+After the 'pmu-events.c' is generated, it is compiled and the resulting
+'pmu-events.o' is added to 'libperf.a' which is then used to build perf.
+
+NOTES:
+ 1. Several CPUs can support same set of events and hence use a common
+ JSON file. Hence several entries in the pmu_events_map[] could map
+ to a single 'PMU events table'.
+
+ 2. The 'pmu-events.h' has an extern declaration for the mapping table
+ and the generated 'pmu-events.c' defines this table.
+
+ 3. _All_ known CPU tables for architecture are included in the perf
+ binary.
+
+At run time, perf determines the actual CPU it is running on, finds the
+matching events table and builds aliases for those events. This allows
+users to specify events by their name:
+
+ $ perf stat -e pm_1plus_ppc_cmpl sleep 1
+
+where 'pm_1plus_ppc_cmpl' is a Power8 PMU event.
+
+In case of errors when processing files in the tools/perf/pmu-events/arch
+directory, 'jevents' tries to create an empty mapping file to allow the perf
+build to succeed even if the PMU event aliases cannot be used.
+
+However some errors in processing may cause the perf build to fail.
+
+Mapfile format
+===============
+
+The mapfile enables multiple CPU models to share a single set of PMU events.
+It is required even if such mapping is 1:1.
+
+The mapfile.csv format is expected to be:
+
+ Header line
+ CPUID,Version,Dir/path/name,Type
+
+where:
+
+ Comma:
+ is the required field delimiter (i.e other fields cannot
+ have commas within them).
+
+ Comments:
+ Lines in which the first character is either '\n' or '#'
+ are ignored.
+
+ Header line
+ The header line is the first line in the file, which is
+ always _IGNORED_. It can empty.
+
+ CPUID:
+ CPUID is an arch-specific char string, that can be used
+ to identify CPU (and associate it with a set of PMU events
+ it supports). Multiple CPUIDS can point to the same
+ File/path/name.json.
+
+ Example:
+ CPUID == 'GenuineIntel-6-2E' (on x86).
+ CPUID == '004b0100' (PVR value in Powerpc)
+ Version:
+ is the Version of the mapfile.
+
+ Dir/path/name:
+ is the pathname to the directory containing the CPU's JSON
+ files, relative to the directory containing the mapfile.csv
+
+ Type:
+ indicates whether the events or "core" or "uncore" events.
+
+
+ Eg:
+
+ $ grep Silvermont tools/perf/pmu-events/arch/x86/mapfile.csv
+ GenuineIntel-6-37,V13,Silvermont_core,core
+ GenuineIntel-6-4D,V13,Silvermont_core,core
+ GenuineIntel-6-4C,V13,Silvermont_core,core
+
+ i.e the three CPU models use the JSON files (i.e PMU events) listed
+ in the directory 'tools/perf/pmu-events/arch/x86/Silvermont_core'.
diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
new file mode 100644
index 000000000000..41611d7f9873
--- /dev/null
+++ b/tools/perf/pmu-events/jevents.c
@@ -0,0 +1,814 @@
+#define _XOPEN_SOURCE 500 /* needed for nftw() */
+#define _GNU_SOURCE /* needed for asprintf() */
+
+/* Parse event JSON files */
+
+/*
+ * Copyright (c) 2014, Intel Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <ctype.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <libgen.h>
+#include <dirent.h>
+#include <sys/time.h> /* getrlimit */
+#include <sys/resource.h> /* getrlimit */
+#include <ftw.h>
+#include <sys/stat.h>
+#include "jsmn.h"
+#include "json.h"
+#include "jevents.h"
+
+#ifndef __maybe_unused
+#define __maybe_unused __attribute__((unused))
+#endif
+
+int verbose;
+char *prog;
+
+int eprintf(int level, int var, const char *fmt, ...)
+{
+
+ int ret;
+ va_list args;
+
+ if (var < level)
+ return 0;
+
+ va_start(args, fmt);
+
+ ret = vfprintf(stderr, fmt, args);
+
+ va_end(args);
+
+ return ret;
+}
+
+__attribute__((weak)) char *get_cpu_str(void)
+{
+ return NULL;
+}
+
+static void addfield(char *map, char **dst, const char *sep,
+ const char *a, jsmntok_t *bt)
+{
+ unsigned int len = strlen(a) + 1 + strlen(sep);
+ int olen = *dst ? strlen(*dst) : 0;
+ int blen = bt ? json_len(bt) : 0;
+ char *out;
+
+ out = realloc(*dst, len + olen + blen);
+ if (!out) {
+ /* Don't add field in this case */
+ return;
+ }
+ *dst = out;
+
+ if (!olen)
+ *(*dst) = 0;
+ else
+ strcat(*dst, sep);
+ strcat(*dst, a);
+ if (bt)
+ strncat(*dst, map + bt->start, blen);
+}
+
+static void fixname(char *s)
+{
+ for (; *s; s++)
+ *s = tolower(*s);
+}
+
+static void fixdesc(char *s)
+{
+ char *e = s + strlen(s);
+
+ /* Remove trailing dots that look ugly in perf list */
+ --e;
+ while (e >= s && isspace(*e))
+ --e;
+ if (*e == '.')
+ *e = 0;
+}
+
+static struct msrmap {
+ const char *num;
+ const char *pname;
+} msrmap[] = {
+ { "0x3F6", "ldlat=" },
+ { "0x1A6", "offcore_rsp=" },
+ { "0x1A7", "offcore_rsp=" },
+ { "0x3F7", "frontend=" },
+ { NULL, NULL }
+};
+
+static struct field {
+ const char *field;
+ const char *kernel;
+} fields[] = {
+ { "EventCode", "event=" },
+ { "UMask", "umask=" },
+ { "CounterMask", "cmask=" },
+ { "Invert", "inv=" },
+ { "AnyThread", "any=" },
+ { "EdgeDetect", "edge=" },
+ { "SampleAfterValue", "period=" },
+ { NULL, NULL }
+};
+
+static void cut_comma(char *map, jsmntok_t *newval)
+{
+ int i;
+
+ /* Cut off everything after comma */
+ for (i = newval->start; i < newval->end; i++) {
+ if (map[i] == ',')
+ newval->end = i;
+ }
+}
+
+static int match_field(char *map, jsmntok_t *field, int nz,
+ char **event, jsmntok_t *val)
+{
+ struct field *f;
+ jsmntok_t newval = *val;
+
+ for (f = fields; f->field; f++)
+ if (json_streq(map, field, f->field) && nz) {
+ cut_comma(map, &newval);
+ addfield(map, event, ",", f->kernel, &newval);
+ return 1;
+ }
+ return 0;
+}
+
+static struct msrmap *lookup_msr(char *map, jsmntok_t *val)
+{
+ jsmntok_t newval = *val;
+ static bool warned;
+ int i;
+
+ cut_comma(map, &newval);
+ for (i = 0; msrmap[i].num; i++)
+ if (json_streq(map, &newval, msrmap[i].num))
+ return &msrmap[i];
+ if (!warned) {
+ warned = true;
+ pr_err("%s: Unknown MSR in event file %.*s\n", prog,
+ json_len(val), map + val->start);
+ }
+ return NULL;
+}
+
+#define EXPECT(e, t, m) do { if (!(e)) { \
+ jsmntok_t *loc = (t); \
+ if (!(t)->start && (t) > tokens) \
+ loc = (t) - 1; \
+ pr_err("%s:%d: " m ", got %s\n", fn, \
+ json_line(map, loc), \
+ json_name(t)); \
+ goto out_free; \
+} } while (0)
+
+#define TOPIC_DEPTH 256
+static char *topic_array[TOPIC_DEPTH];
+static int topic_level;
+
+static char *get_topic(void)
+{
+ char *tp_old, *tp = NULL;
+ int i;
+
+ for (i = 0; i < topic_level + 1; i++) {
+ int n;
+
+ tp_old = tp;
+ n = asprintf(&tp, "%s%s", tp ?: "", topic_array[i]);
+ if (n < 0) {
+ pr_info("%s: asprintf() error %s\n", prog);
+ return NULL;
+ }
+ free(tp_old);
+ }
+
+ for (i = 0; i < (int) strlen(tp); i++) {
+ char c = tp[i];
+
+ if (c == '-')
+ tp[i] = ' ';
+ else if (c == '.') {
+ tp[i] = '\0';
+ break;
+ }
+ }
+
+ return tp;
+}
+
+static int add_topic(int level, char *bname)
+{
+ char *topic;
+
+ level -= 2;
+
+ if (level >= TOPIC_DEPTH)
+ return -EINVAL;
+
+ topic = strdup(bname);
+ if (!topic) {
+ pr_info("%s: strdup() error %s for file %s\n", prog,
+ strerror(errno), bname);
+ return -ENOMEM;
+ }
+
+ free(topic_array[topic_level]);
+ topic_array[topic_level] = topic;
+ topic_level = level;
+ return 0;
+}
+
+struct perf_entry_data {
+ FILE *outfp;
+ char *topic;
+};
+
+static int close_table;
+
+static void print_events_table_prefix(FILE *fp, const char *tblname)
+{
+ fprintf(fp, "struct pmu_event %s[] = {\n", tblname);
+ close_table = 1;
+}
+
+static int print_events_table_entry(void *data, char *name, char *event,
+ char *desc, char *long_desc)
+{
+ struct perf_entry_data *pd = data;
+ FILE *outfp = pd->outfp;
+ char *topic = pd->topic;
+
+ /*
+ * TODO: Remove formatting chars after debugging to reduce
+ * string lengths.
+ */
+ fprintf(outfp, "{\n");
+
+ fprintf(outfp, "\t.name = \"%s\",\n", name);
+ fprintf(outfp, "\t.event = \"%s\",\n", event);
+ fprintf(outfp, "\t.desc = \"%s\",\n", desc);
+ fprintf(outfp, "\t.topic = \"%s\",\n", topic);
+ if (long_desc && long_desc[0])
+ fprintf(outfp, "\t.long_desc = \"%s\",\n", long_desc);
+
+ fprintf(outfp, "},\n");
+
+ return 0;
+}
+
+static void print_events_table_suffix(FILE *outfp)
+{
+ fprintf(outfp, "{\n");
+
+ fprintf(outfp, "\t.name = 0,\n");
+ fprintf(outfp, "\t.event = 0,\n");
+ fprintf(outfp, "\t.desc = 0,\n");
+
+ fprintf(outfp, "},\n");
+ fprintf(outfp, "};\n");
+ close_table = 0;
+}
+
+static struct fixed {
+ const char *name;
+ const char *event;
+} fixed[] = {
+ { "inst_retired.any", "event=0xc0" },
+ { "inst_retired.any_p", "event=0xc0" },
+ { "cpu_clk_unhalted.ref", "event=0x0,umask=0x03" },
+ { "cpu_clk_unhalted.thread", "event=0x3c" },
+ { "cpu_clk_unhalted.thread_any", "event=0x3c,any=1" },
+ { NULL, NULL},
+};
+
+/*
+ * Handle different fixed counter encodings between JSON and perf.
+ */
+static char *real_event(const char *name, char *event)
+{
+ int i;
+
+ for (i = 0; fixed[i].name; i++)
+ if (!strcasecmp(name, fixed[i].name))
+ return (char *)fixed[i].event;
+ return event;
+}
+
+/* Call func with each event in the json file */
+int json_events(const char *fn,
+ int (*func)(void *data, char *name, char *event, char *desc,
+ char *long_desc),
+ void *data)
+{
+ int err = -EIO;
+ size_t size;
+ jsmntok_t *tokens, *tok;
+ int i, j, len;
+ char *map;
+
+ if (!fn)
+ return -ENOENT;
+
+ tokens = parse_json(fn, &map, &size, &len);
+ if (!tokens)
+ return -EIO;
+ EXPECT(tokens->type == JSMN_ARRAY, tokens, "expected top level array");
+ tok = tokens + 1;
+ for (i = 0; i < tokens->size; i++) {
+ char *event = NULL, *desc = NULL, *name = NULL;
+ char *long_desc = NULL;
+ char *extra_desc = NULL;
+ struct msrmap *msr = NULL;
+ jsmntok_t *msrval = NULL;
+ jsmntok_t *precise = NULL;
+ jsmntok_t *obj = tok++;
+
+ EXPECT(obj->type == JSMN_OBJECT, obj, "expected object");
+ for (j = 0; j < obj->size; j += 2) {
+ jsmntok_t *field, *val;
+ int nz;
+
+ field = tok + j;
+ EXPECT(field->type == JSMN_STRING, tok + j,
+ "Expected field name");
+ val = tok + j + 1;
+ EXPECT(val->type == JSMN_STRING, tok + j + 1,
+ "Expected string value");
+
+ nz = !json_streq(map, val, "0");
+ if (match_field(map, field, nz, &event, val)) {
+ /* ok */
+ } else if (json_streq(map, field, "EventName")) {
+ addfield(map, &name, "", "", val);
+ } else if (json_streq(map, field, "BriefDescription")) {
+ addfield(map, &desc, "", "", val);
+ fixdesc(desc);
+ } else if (json_streq(map, field,
+ "PublicDescription")) {
+ addfield(map, &long_desc, "", "", val);
+ fixdesc(long_desc);
+ } else if (json_streq(map, field, "PEBS") && nz) {
+ precise = val;
+ } else if (json_streq(map, field, "MSRIndex") && nz) {
+ msr = lookup_msr(map, val);
+ } else if (json_streq(map, field, "MSRValue")) {
+ msrval = val;
+ } else if (json_streq(map, field, "Errata") &&
+ !json_streq(map, val, "null")) {
+ addfield(map, &extra_desc, ". ",
+ " Spec update: ", val);
+ } else if (json_streq(map, field, "Data_LA") && nz) {
+ addfield(map, &extra_desc, ". ",
+ " Supports address when precise",
+ NULL);
+ }
+ /* ignore unknown fields */
+ }
+ if (precise && desc && !strstr(desc, "(Precise Event)")) {
+ if (json_streq(map, precise, "2"))
+ addfield(map, &extra_desc, " ",
+ "(Must be precise)", NULL);
+ else
+ addfield(map, &extra_desc, " ",
+ "(Precise event)", NULL);
+ }
+ if (desc && extra_desc)
+ addfield(map, &desc, " ", extra_desc, NULL);
+ if (long_desc && extra_desc)
+ addfield(map, &long_desc, " ", extra_desc, NULL);
+ if (msr != NULL)
+ addfield(map, &event, ",", msr->pname, msrval);
+ fixname(name);
+
+ err = func(data, name, real_event(name, event), desc, long_desc);
+ free(event);
+ free(desc);
+ free(name);
+ free(long_desc);
+ free(extra_desc);
+ if (err)
+ break;
+ tok += j;
+ }
+ EXPECT(tok - tokens == len, tok, "unexpected objects at end");
+ err = 0;
+out_free:
+ free_json(map, size, tokens);
+ return err;
+}
+
+static char *file_name_to_table_name(char *fname)
+{
+ unsigned int i;
+ int n;
+ int c;
+ char *tblname;
+
+ /*
+ * Ensure tablename starts with alphabetic character.
+ * Derive rest of table name from basename of the JSON file,
+ * replacing hyphens and stripping out .json suffix.
+ */
+ n = asprintf(&tblname, "pme_%s", basename(fname));
+ if (n < 0) {
+ pr_info("%s: asprintf() error %s for file %s\n", prog,
+ strerror(errno), fname);
+ return NULL;
+ }
+
+ for (i = 0; i < strlen(tblname); i++) {
+ c = tblname[i];
+
+ if (c == '-')
+ tblname[i] = '_';
+ else if (c == '.') {
+ tblname[i] = '\0';
+ break;
+ } else if (!isalnum(c) && c != '_') {
+ pr_err("%s: Invalid character '%c' in file name %s\n",
+ prog, c, basename(fname));
+ free(tblname);
+ tblname = NULL;
+ break;
+ }
+ }
+
+ return tblname;
+}
+
+static void print_mapping_table_prefix(FILE *outfp)
+{
+ fprintf(outfp, "struct pmu_events_map pmu_events_map[] = {\n");
+}
+
+static void print_mapping_table_suffix(FILE *outfp)
+{
+ /*
+ * Print the terminating, NULL entry.
+ */
+ fprintf(outfp, "{\n");
+ fprintf(outfp, "\t.cpuid = 0,\n");
+ fprintf(outfp, "\t.version = 0,\n");
+ fprintf(outfp, "\t.type = 0,\n");
+ fprintf(outfp, "\t.table = 0,\n");
+ fprintf(outfp, "},\n");
+
+ /* and finally, the closing curly bracket for the struct */
+ fprintf(outfp, "};\n");
+}
+
+static int process_mapfile(FILE *outfp, char *fpath)
+{
+ int n = 16384;
+ FILE *mapfp;
+ char *save = NULL;
+ char *line, *p;
+ int line_num;
+ char *tblname;
+
+ pr_info("%s: Processing mapfile %s\n", prog, fpath);
+
+ line = malloc(n);
+ if (!line)
+ return -1;
+
+ mapfp = fopen(fpath, "r");
+ if (!mapfp) {
+ pr_info("%s: Error %s opening %s\n", prog, strerror(errno),
+ fpath);
+ return -1;
+ }
+
+ print_mapping_table_prefix(outfp);
+
+ /* Skip first line (header) */
+ p = fgets(line, n, mapfp);
+ if (!p)
+ goto out;
+
+ line_num = 1;
+ while (1) {
+ char *cpuid, *version, *type, *fname;
+
+ line_num++;
+ p = fgets(line, n, mapfp);
+ if (!p)
+ break;
+
+ if (line[0] == '#' || line[0] == '\n')
+ continue;
+
+ if (line[strlen(line)-1] != '\n') {
+ /* TODO Deal with lines longer than 16K */
+ pr_info("%s: Mapfile %s: line %d too long, aborting\n",
+ prog, fpath, line_num);
+ return -1;
+ }
+ line[strlen(line)-1] = '\0';
+
+ cpuid = strtok_r(p, ",", &save);
+ version = strtok_r(NULL, ",", &save);
+ fname = strtok_r(NULL, ",", &save);
+ type = strtok_r(NULL, ",", &save);
+
+ tblname = file_name_to_table_name(fname);
+ fprintf(outfp, "{\n");
+ fprintf(outfp, "\t.cpuid = \"%s\",\n", cpuid);
+ fprintf(outfp, "\t.version = \"%s\",\n", version);
+ fprintf(outfp, "\t.type = \"%s\",\n", type);
+
+ /*
+ * CHECK: We can't use the type (eg "core") field in the
+ * table name. For us to do that, we need to somehow tweak
+ * the other caller of file_name_to_table(), process_json()
+ * to determine the type. process_json() file has no way
+ * of knowing these are "core" events unless file name has
+ * core in it. If filename has core in it, we can safely
+ * ignore the type field here also.
+ */
+ fprintf(outfp, "\t.table = %s\n", tblname);
+ fprintf(outfp, "},\n");
+ }
+
+out:
+ print_mapping_table_suffix(outfp);
+ return 0;
+}
+
+/*
+ * If we fail to locate/process JSON and map files, create a NULL mapping
+ * table. This would at least allow perf to build even if we can't find/use
+ * the aliases.
+ */
+static void create_empty_mapping(const char *output_file)
+{
+ FILE *outfp;
+
+ pr_info("%s: Creating empty pmu_events_map[] table\n", prog);
+
+ /* Truncate file to clear any partial writes to it */
+ outfp = fopen(output_file, "w");
+ if (!outfp) {
+ perror("fopen()");
+ _Exit(1);
+ }
+
+ fprintf(outfp, "#include \"../../pmu-events/pmu-events.h\"\n");
+ print_mapping_table_prefix(outfp);
+ print_mapping_table_suffix(outfp);
+ fclose(outfp);
+}
+
+static int get_maxfds(void)
+{
+ struct rlimit rlim;
+
+ if (getrlimit(RLIMIT_NOFILE, &rlim) == 0)
+ return min((int)rlim.rlim_max / 2, 512);
+
+ return 512;
+}
+
+/*
+ * nftw() doesn't let us pass an argument to the processing function,
+ * so use a global variables.
+ */
+static FILE *eventsfp;
+static char *mapfile;
+
+static int process_one_file(const char *fpath, const struct stat *sb,
+ int typeflag, struct FTW *ftwbuf)
+{
+ char *tblname, *bname = (char *) fpath + ftwbuf->base;
+ int is_dir = typeflag == FTW_D;
+ int is_file = typeflag == FTW_F;
+ int level = ftwbuf->level;
+ int err = 0;
+
+ pr_debug("%s %d %7jd %-20s %s\n",
+ is_file ? "f" : is_dir ? "d" : "x",
+ level, sb->st_size, bname, fpath);
+
+ /* base dir */
+ if (level == 0)
+ return 0;
+
+ /* model directory, reset topic */
+ if (level == 1 && is_dir) {
+ if (close_table)
+ print_events_table_suffix(eventsfp);
+
+ /*
+ * Drop file name suffix. Replace hyphens with underscores.
+ * Fail if file name contains any alphanum characters besides
+ * underscores.
+ */
+ tblname = file_name_to_table_name(bname);
+ if (!tblname) {
+ pr_info("%s: Error determining table name for %s\n", prog,
+ bname);
+ return -1;
+ }
+
+ print_events_table_prefix(eventsfp, tblname);
+ return 0;
+ }
+
+ /*
+ * Save the mapfile name for now. We will process mapfile
+ * after processing all JSON files (so we can write out the
+ * mapping table after all PMU events tables).
+ *
+ * TODO: Allow for multiple mapfiles? Punt for now.
+ */
+ if (level == 1 && is_file) {
+ if (!strncmp(bname, "mapfile.csv", 11)) {
+ if (mapfile) {
+ pr_info("%s: Many mapfiles? Using %s, ignoring %s\n",
+ prog, mapfile, fpath);
+ } else {
+ mapfile = strdup(fpath);
+ }
+ return 0;
+ }
+
+ pr_info("%s: Ignoring file %s\n", prog, fpath);
+ return 0;
+ }
+
+ /*
+ * If the file name does not have a .json extension,
+ * ignore it. It could be a readme.txt for instance.
+ */
+ if (is_file) {
+ char *suffix = bname + strlen(bname) - 5;
+
+ if (strncmp(suffix, ".json", 5)) {
+ pr_info("%s: Ignoring file without .json suffix %s\n", prog,
+ fpath);
+ return 0;
+ }
+ }
+
+ if (level > 1 && add_topic(level, bname))
+ return -ENOMEM;
+
+ /*
+ * Assume all other files are JSON files.
+ *
+ * If mapfile refers to 'power7_core.json', we create a table
+ * named 'power7_core'. Any inconsistencies between the mapfile
+ * and directory tree could result in build failure due to table
+ * names not being found.
+ *
+ * Atleast for now, be strict with processing JSON file names.
+ * i.e. if JSON file name cannot be mapped to C-style table name,
+ * fail.
+ */
+ if (is_file) {
+ struct perf_entry_data data = {
+ .topic = get_topic(),
+ .outfp = eventsfp,
+ };
+
+ err = json_events(fpath, print_events_table_entry, &data);
+
+ free(data.topic);
+ }
+
+ return err;
+}
+
+#ifndef PATH_MAX
+#define PATH_MAX 4096
+#endif
+
+/*
+ * Starting in directory 'start_dirname', find the "mapfile.csv" and
+ * the set of JSON files for the architecture 'arch'.
+ *
+ * From each JSON file, create a C-style "PMU events table" from the
+ * JSON file (see struct pmu_event).
+ *
+ * From the mapfile, create a mapping between the CPU revisions and
+ * PMU event tables (see struct pmu_events_map).
+ *
+ * Write out the PMU events tables and the mapping table to pmu-event.c.
+ *
+ * If unable to process the JSON or arch files, create an empty mapping
+ * table so we can continue to build/use perf even if we cannot use the
+ * PMU event aliases.
+ */
+int main(int argc, char *argv[])
+{
+ int rc;
+ int maxfds;
+ char ldirname[PATH_MAX];
+
+ const char *arch;
+ const char *output_file;
+ const char *start_dirname;
+
+ prog = basename(argv[0]);
+ if (argc < 4) {
+ pr_err("Usage: %s <arch> <starting_dir> <output_file>\n", prog);
+ return 1;
+ }
+
+ arch = argv[1];
+ start_dirname = argv[2];
+ output_file = argv[3];
+
+ if (argc > 4)
+ verbose = atoi(argv[4]);
+
+ eventsfp = fopen(output_file, "w");
+ if (!eventsfp) {
+ pr_err("%s Unable to create required file %s (%s)\n",
+ prog, output_file, strerror(errno));
+ return 2;
+ }
+
+ /* Include pmu-events.h first */
+ fprintf(eventsfp, "#include \"../../pmu-events/pmu-events.h\"\n");
+
+ sprintf(ldirname, "%s/%s", start_dirname, arch);
+
+ /*
+ * The mapfile allows multiple CPUids to point to the same JSON file,
+ * so, not sure if there is a need for symlinks within the pmu-events
+ * directory.
+ *
+ * For now, treat symlinks of JSON files as regular files and create
+ * separate tables for each symlink (presumably, each symlink refers
+ * to specific version of the CPU).
+ */
+
+ maxfds = get_maxfds();
+ mapfile = NULL;
+ rc = nftw(ldirname, process_one_file, maxfds, 0);
+ if (rc && verbose) {
+ pr_info("%s: Error walking file tree %s\n", prog, ldirname);
+ goto empty_map;
+ } else if (rc) {
+ goto empty_map;
+ }
+
+ if (close_table)
+ print_events_table_suffix(eventsfp);
+
+ if (!mapfile) {
+ pr_info("%s: No CPU->JSON mapping?\n", prog);
+ goto empty_map;
+ }
+
+ if (process_mapfile(eventsfp, mapfile)) {
+ pr_info("%s: Error processing mapfile %s\n", prog, mapfile);
+ goto empty_map;
+ }
+
+ return 0;
+
+empty_map:
+ fclose(eventsfp);
+ create_empty_mapping(output_file);
+ return 0;
+}
diff --git a/tools/perf/pmu-events/jevents.h b/tools/perf/pmu-events/jevents.h
new file mode 100644
index 000000000000..b0eb2744b498
--- /dev/null
+++ b/tools/perf/pmu-events/jevents.h
@@ -0,0 +1,18 @@
+#ifndef JEVENTS_H
+#define JEVENTS_H 1
+
+int json_events(const char *fn,
+ int (*func)(void *data, char *name, char *event, char *desc,
+ char *long_desc),
+ void *data);
+char *get_cpu_str(void);
+
+#ifndef min
+#define min(x, y) ({ \
+ typeof(x) _min1 = (x); \
+ typeof(y) _min2 = (y); \
+ (void) (&_min1 == &_min2); \
+ _min1 < _min2 ? _min1 : _min2; })
+#endif
+
+#endif
diff --git a/tools/perf/pmu-events/jsmn.c b/tools/perf/pmu-events/jsmn.c
new file mode 100644
index 000000000000..11d1fa18bfa5
--- /dev/null
+++ b/tools/perf/pmu-events/jsmn.c
@@ -0,0 +1,313 @@
+/*
+ * Copyright (c) 2010 Serge A. Zaitsev
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * Slightly modified by AK to not assume 0 terminated input.
+ */
+
+#include <stdlib.h>
+#include "jsmn.h"
+
+/*
+ * Allocates a fresh unused token from the token pool.
+ */
+static jsmntok_t *jsmn_alloc_token(jsmn_parser *parser,
+ jsmntok_t *tokens, size_t num_tokens)
+{
+ jsmntok_t *tok;
+
+ if ((unsigned)parser->toknext >= num_tokens)
+ return NULL;
+ tok = &tokens[parser->toknext++];
+ tok->start = tok->end = -1;
+ tok->size = 0;
+ return tok;
+}
+
+/*
+ * Fills token type and boundaries.
+ */
+static void jsmn_fill_token(jsmntok_t *token, jsmntype_t type,
+ int start, int end)
+{
+ token->type = type;
+ token->start = start;
+ token->end = end;
+ token->size = 0;
+}
+
+/*
+ * Fills next available token with JSON primitive.
+ */
+static jsmnerr_t jsmn_parse_primitive(jsmn_parser *parser, const char *js,
+ size_t len,
+ jsmntok_t *tokens, size_t num_tokens)
+{
+ jsmntok_t *token;
+ int start;
+
+ start = parser->pos;
+
+ for (; parser->pos < len; parser->pos++) {
+ switch (js[parser->pos]) {
+#ifndef JSMN_STRICT
+ /*
+ * In strict mode primitive must be followed by ","
+ * or "}" or "]"
+ */
+ case ':':
+#endif
+ case '\t':
+ case '\r':
+ case '\n':
+ case ' ':
+ case ',':
+ case ']':
+ case '}':
+ goto found;
+ default:
+ break;
+ }
+ if (js[parser->pos] < 32 || js[parser->pos] >= 127) {
+ parser->pos = start;
+ return JSMN_ERROR_INVAL;
+ }
+ }
+#ifdef JSMN_STRICT
+ /*
+ * In strict mode primitive must be followed by a
+ * comma/object/array.
+ */
+ parser->pos = start;
+ return JSMN_ERROR_PART;
+#endif
+
+found:
+ token = jsmn_alloc_token(parser, tokens, num_tokens);
+ if (token == NULL) {
+ parser->pos = start;
+ return JSMN_ERROR_NOMEM;
+ }
+ jsmn_fill_token(token, JSMN_PRIMITIVE, start, parser->pos);
+ parser->pos--; /* parent sees closing brackets */
+ return JSMN_SUCCESS;
+}
+
+/*
+ * Fills next token with JSON string.
+ */
+static jsmnerr_t jsmn_parse_string(jsmn_parser *parser, const char *js,
+ size_t len,
+ jsmntok_t *tokens, size_t num_tokens)
+{
+ jsmntok_t *token;
+ int start = parser->pos;
+
+ /* Skip starting quote */
+ parser->pos++;
+
+ for (; parser->pos < len; parser->pos++) {
+ char c = js[parser->pos];
+
+ /* Quote: end of string */
+ if (c == '\"') {
+ token = jsmn_alloc_token(parser, tokens, num_tokens);
+ if (token == NULL) {
+ parser->pos = start;
+ return JSMN_ERROR_NOMEM;
+ }
+ jsmn_fill_token(token, JSMN_STRING, start+1,
+ parser->pos);
+ return JSMN_SUCCESS;
+ }
+
+ /* Backslash: Quoted symbol expected */
+ if (c == '\\') {
+ parser->pos++;
+ switch (js[parser->pos]) {
+ /* Allowed escaped symbols */
+ case '\"':
+ case '/':
+ case '\\':
+ case 'b':
+ case 'f':
+ case 'r':
+ case 'n':
+ case 't':
+ break;
+ /* Allows escaped symbol \uXXXX */
+ case 'u':
+ /* TODO */
+ break;
+ /* Unexpected symbol */
+ default:
+ parser->pos = start;
+ return JSMN_ERROR_INVAL;
+ }
+ }
+ }
+ parser->pos = start;
+ return JSMN_ERROR_PART;
+}
+
+/*
+ * Parse JSON string and fill tokens.
+ */
+jsmnerr_t jsmn_parse(jsmn_parser *parser, const char *js, size_t len,
+ jsmntok_t *tokens, unsigned int num_tokens)
+{
+ jsmnerr_t r;
+ int i;
+ jsmntok_t *token;
+
+ for (; parser->pos < len; parser->pos++) {
+ char c;
+ jsmntype_t type;
+
+ c = js[parser->pos];
+ switch (c) {
+ case '{':
+ case '[':
+ token = jsmn_alloc_token(parser, tokens, num_tokens);
+ if (token == NULL)
+ return JSMN_ERROR_NOMEM;
+ if (parser->toksuper != -1)
+ tokens[parser->toksuper].size++;
+ token->type = (c == '{' ? JSMN_OBJECT : JSMN_ARRAY);
+ token->start = parser->pos;
+ parser->toksuper = parser->toknext - 1;
+ break;
+ case '}':
+ case ']':
+ type = (c == '}' ? JSMN_OBJECT : JSMN_ARRAY);
+ for (i = parser->toknext - 1; i >= 0; i--) {
+ token = &tokens[i];
+ if (token->start != -1 && token->end == -1) {
+ if (token->type != type)
+ return JSMN_ERROR_INVAL;
+ parser->toksuper = -1;
+ token->end = parser->pos + 1;
+ break;
+ }
+ }
+ /* Error if unmatched closing bracket */
+ if (i == -1)
+ return JSMN_ERROR_INVAL;
+ for (; i >= 0; i--) {
+ token = &tokens[i];
+ if (token->start != -1 && token->end == -1) {
+ parser->toksuper = i;
+ break;
+ }
+ }
+ break;
+ case '\"':
+ r = jsmn_parse_string(parser, js, len, tokens,
+ num_tokens);
+ if (r < 0)
+ return r;
+ if (parser->toksuper != -1)
+ tokens[parser->toksuper].size++;
+ break;
+ case '\t':
+ case '\r':
+ case '\n':
+ case ':':
+ case ',':
+ case ' ':
+ break;
+#ifdef JSMN_STRICT
+ /*
+ * In strict mode primitives are:
+ * numbers and booleans.
+ */
+ case '-':
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ case 't':
+ case 'f':
+ case 'n':
+#else
+ /*
+ * In non-strict mode every unquoted value
+ * is a primitive.
+ */
+ /*FALL THROUGH */
+ default:
+#endif
+ r = jsmn_parse_primitive(parser, js, len, tokens,
+ num_tokens);
+ if (r < 0)
+ return r;
+ if (parser->toksuper != -1)
+ tokens[parser->toksuper].size++;
+ break;
+
+#ifdef JSMN_STRICT
+ /* Unexpected char in strict mode */
+ default:
+ return JSMN_ERROR_INVAL;
+#endif
+ }
+ }
+
+ for (i = parser->toknext - 1; i >= 0; i--) {
+ /* Unmatched opened object or array */
+ if (tokens[i].start != -1 && tokens[i].end == -1)
+ return JSMN_ERROR_PART;
+ }
+
+ return JSMN_SUCCESS;
+}
+
+/*
+ * Creates a new parser based over a given buffer with an array of tokens
+ * available.
+ */
+void jsmn_init(jsmn_parser *parser)
+{
+ parser->pos = 0;
+ parser->toknext = 0;
+ parser->toksuper = -1;
+}
+
+const char *jsmn_strerror(jsmnerr_t err)
+{
+ switch (err) {
+ case JSMN_ERROR_NOMEM:
+ return "No enough tokens";
+ case JSMN_ERROR_INVAL:
+ return "Invalid character inside JSON string";
+ case JSMN_ERROR_PART:
+ return "The string is not a full JSON packet, more bytes expected";
+ case JSMN_SUCCESS:
+ return "Success";
+ default:
+ return "Unknown json error";
+ }
+}
diff --git a/tools/perf/pmu-events/jsmn.h b/tools/perf/pmu-events/jsmn.h
new file mode 100644
index 000000000000..d666b10cf25b
--- /dev/null
+++ b/tools/perf/pmu-events/jsmn.h
@@ -0,0 +1,67 @@
+#ifndef __JSMN_H_
+#define __JSMN_H_
+
+/*
+ * JSON type identifier. Basic types are:
+ * o Object
+ * o Array
+ * o String
+ * o Other primitive: number, boolean (true/false) or null
+ */
+typedef enum {
+ JSMN_PRIMITIVE = 0,
+ JSMN_OBJECT = 1,
+ JSMN_ARRAY = 2,
+ JSMN_STRING = 3
+} jsmntype_t;
+
+typedef enum {
+ /* Not enough tokens were provided */
+ JSMN_ERROR_NOMEM = -1,
+ /* Invalid character inside JSON string */
+ JSMN_ERROR_INVAL = -2,
+ /* The string is not a full JSON packet, more bytes expected */
+ JSMN_ERROR_PART = -3,
+ /* Everything was fine */
+ JSMN_SUCCESS = 0
+} jsmnerr_t;
+
+/*
+ * JSON token description.
+ * @param type type (object, array, string etc.)
+ * @param start start position in JSON data string
+ * @param end end position in JSON data string
+ */
+typedef struct {
+ jsmntype_t type;
+ int start;
+ int end;
+ int size;
+} jsmntok_t;
+
+/*
+ * JSON parser. Contains an array of token blocks available. Also stores
+ * the string being parsed now and current position in that string
+ */
+typedef struct {
+ unsigned int pos; /* offset in the JSON string */
+ int toknext; /* next token to allocate */
+ int toksuper; /* superior token node, e.g parent object or array */
+} jsmn_parser;
+
+/*
+ * Create JSON parser over an array of tokens
+ */
+void jsmn_init(jsmn_parser *parser);
+
+/*
+ * Run JSON parser. It parses a JSON data string into and array of tokens,
+ * each describing a single JSON object.
+ */
+jsmnerr_t jsmn_parse(jsmn_parser *parser, const char *js,
+ size_t len,
+ jsmntok_t *tokens, unsigned int num_tokens);
+
+const char *jsmn_strerror(jsmnerr_t err);
+
+#endif /* __JSMN_H_ */
diff --git a/tools/perf/pmu-events/json.c b/tools/perf/pmu-events/json.c
new file mode 100644
index 000000000000..f67bbb0aa36e
--- /dev/null
+++ b/tools/perf/pmu-events/json.c
@@ -0,0 +1,162 @@
+/* Parse JSON files using the JSMN parser. */
+
+/*
+ * Copyright (c) 2014, Intel Corporation
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+#include "jsmn.h"
+#include "json.h"
+#include <linux/kernel.h>
+
+
+static char *mapfile(const char *fn, size_t *size)
+{
+ unsigned ps = sysconf(_SC_PAGESIZE);
+ struct stat st;
+ char *map = NULL;
+ int err;
+ int fd = open(fn, O_RDONLY);
+
+ if (fd < 0 && verbose && fn) {
+ pr_err("Error opening events file '%s': %s\n", fn,
+ strerror(errno));
+ }
+
+ if (fd < 0)
+ return NULL;
+ err = fstat(fd, &st);
+ if (err < 0)
+ goto out;
+ *size = st.st_size;
+ map = mmap(NULL,
+ (st.st_size + ps - 1) & ~(ps - 1),
+ PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
+ if (map == MAP_FAILED)
+ map = NULL;
+out:
+ close(fd);
+ return map;
+}
+
+static void unmapfile(char *map, size_t size)
+{
+ unsigned ps = sysconf(_SC_PAGESIZE);
+ munmap(map, roundup(size, ps));
+}
+
+/*
+ * Parse json file using jsmn. Return array of tokens,
+ * and mapped file. Caller needs to free array.
+ */
+jsmntok_t *parse_json(const char *fn, char **map, size_t *size, int *len)
+{
+ jsmn_parser parser;
+ jsmntok_t *tokens;
+ jsmnerr_t res;
+ unsigned sz;
+
+ *map = mapfile(fn, size);
+ if (!*map)
+ return NULL;
+ /* Heuristic */
+ sz = *size * 16;
+ tokens = malloc(sz);
+ if (!tokens)
+ goto error;
+ jsmn_init(&parser);
+ res = jsmn_parse(&parser, *map, *size, tokens,
+ sz / sizeof(jsmntok_t));
+ if (res != JSMN_SUCCESS) {
+ pr_err("%s: json error %s\n", fn, jsmn_strerror(res));
+ goto error_free;
+ }
+ if (len)
+ *len = parser.toknext;
+ return tokens;
+error_free:
+ free(tokens);
+error:
+ unmapfile(*map, *size);
+ return NULL;
+}
+
+void free_json(char *map, size_t size, jsmntok_t *tokens)
+{
+ free(tokens);
+ unmapfile(map, size);
+}
+
+static int countchar(char *map, char c, int end)
+{
+ int i;
+ int count = 0;
+ for (i = 0; i < end; i++)
+ if (map[i] == c)
+ count++;
+ return count;
+}
+
+/* Return line number of a jsmn token */
+int json_line(char *map, jsmntok_t *t)
+{
+ return countchar(map, '\n', t->start) + 1;
+}
+
+static const char * const jsmn_types[] = {
+ [JSMN_PRIMITIVE] = "primitive",
+ [JSMN_ARRAY] = "array",
+ [JSMN_OBJECT] = "object",
+ [JSMN_STRING] = "string"
+};
+
+#define LOOKUP(a, i) ((i) < (sizeof(a)/sizeof(*(a))) ? ((a)[i]) : "?")
+
+/* Return type name of a jsmn token */
+const char *json_name(jsmntok_t *t)
+{
+ return LOOKUP(jsmn_types, t->type);
+}
+
+int json_len(jsmntok_t *t)
+{
+ return t->end - t->start;
+}
+
+/* Is string t equal to s? */
+int json_streq(char *map, jsmntok_t *t, const char *s)
+{
+ unsigned len = json_len(t);
+ return len == strlen(s) && !strncasecmp(map + t->start, s, len);
+}
diff --git a/tools/perf/pmu-events/json.h b/tools/perf/pmu-events/json.h
new file mode 100644
index 000000000000..278ebd32cfb6
--- /dev/null
+++ b/tools/perf/pmu-events/json.h
@@ -0,0 +1,38 @@
+#ifndef JSON_H
+#define JSON_H 1
+
+#include "jsmn.h"
+
+jsmntok_t *parse_json(const char *fn, char **map, size_t *size, int *len);
+void free_json(char *map, size_t size, jsmntok_t *tokens);
+int json_line(char *map, jsmntok_t *t);
+const char *json_name(jsmntok_t *t);
+int json_streq(char *map, jsmntok_t *t, const char *s);
+int json_len(jsmntok_t *t);
+
+extern int verbose;
+
+#include <stdbool.h>
+
+extern int eprintf(int level, int var, const char *fmt, ...);
+#define pr_fmt(fmt) fmt
+
+#define pr_err(fmt, ...) \
+ eprintf(0, verbose, pr_fmt(fmt), ##__VA_ARGS__)
+
+#define pr_info(fmt, ...) \
+ eprintf(1, verbose, pr_fmt(fmt), ##__VA_ARGS__)
+
+#define pr_debug(fmt, ...) \
+ eprintf(2, verbose, pr_fmt(fmt), ##__VA_ARGS__)
+
+#ifndef roundup
+#define roundup(x, y) ( \
+{ \
+ const typeof(y) __y = y; \
+ (((x) + (__y - 1)) / __y) * __y; \
+} \
+)
+#endif
+
+#endif
diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
new file mode 100644
index 000000000000..2eaef595d8a0
--- /dev/null
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -0,0 +1,37 @@
+#ifndef PMU_EVENTS_H
+#define PMU_EVENTS_H
+
+/*
+ * Describe each PMU event. Each CPU has a table of PMU events.
+ */
+struct pmu_event {
+ const char *name;
+ const char *event;
+ const char *desc;
+ const char *topic;
+ const char *long_desc;
+};
+
+/*
+ *
+ * Map a CPU to its table of PMU events. The CPU is identified by the
+ * cpuid field, which is an arch-specific identifier for the CPU.
+ * The identifier specified in tools/perf/pmu-events/arch/xxx/mapfile
+ * must match the get_cpustr() in tools/perf/arch/xxx/util/header.c)
+ *
+ * The cpuid can contain any character other than the comma.
+ */
+struct pmu_events_map {
+ const char *cpuid;
+ const char *version;
+ const char *type; /* core, uncore etc */
+ struct pmu_event *table;
+};
+
+/*
+ * Global table mapping each known CPU for the architecture to its
+ * table of PMU events.
+ */
+extern struct pmu_events_map pmu_events_map[];
+
+#endif
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index ea34c5a32c11..d92e02006fb8 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -384,15 +384,14 @@ void perf_evlist__toggle_enable(struct perf_evlist *evlist)
static int perf_evlist__enable_event_cpu(struct perf_evlist *evlist,
struct perf_evsel *evsel, int cpu)
{
- int thread, err;
+ int thread;
int nr_threads = perf_evlist__nr_threads(evlist, evsel);
if (!evsel->fd)
return -EINVAL;
for (thread = 0; thread < nr_threads; thread++) {
- err = ioctl(FD(evsel, cpu, thread),
- PERF_EVENT_IOC_ENABLE, 0);
+ int err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_ENABLE, 0);
if (err)
return err;
}
@@ -403,14 +402,14 @@ static int perf_evlist__enable_event_thread(struct perf_evlist *evlist,
struct perf_evsel *evsel,
int thread)
{
- int cpu, err;
+ int cpu;
int nr_cpus = cpu_map__nr(evlist->cpus);
if (!evsel->fd)
return -EINVAL;
for (cpu = 0; cpu < nr_cpus; cpu++) {
- err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_ENABLE, 0);
+ int err = ioctl(FD(evsel, cpu, thread), PERF_EVENT_IOC_ENABLE, 0);
if (err)
return err;
}
@@ -1606,10 +1605,9 @@ void perf_evlist__close(struct perf_evlist *evlist)
struct perf_evsel *evsel;
int ncpus = cpu_map__nr(evlist->cpus);
int nthreads = thread_map__nr(evlist->threads);
- int n;
evlist__for_each_entry_reverse(evlist, evsel) {
- n = evsel->cpus ? evsel->cpus->nr : ncpus;
+ int n = evsel->cpus ? evsel->cpus->nr : ncpus;
perf_evsel__close(evsel, n, nthreads);
}
}
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 380e84c3af3d..8bc271141d9d 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -985,14 +985,13 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
static int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads)
{
- int cpu, thread;
-
if (evsel->system_wide)
nthreads = 1;
evsel->fd = xyarray__new(ncpus, nthreads, sizeof(int));
if (evsel->fd) {
+ int cpu, thread;
for (cpu = 0; cpu < ncpus; cpu++) {
for (thread = 0; thread < nthreads; thread++) {
FD(evsel, cpu, thread) = -1;
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index d306ca118449..d30109b421ee 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -151,4 +151,5 @@ int write_padded(int fd, const void *bf, size_t count, size_t count_aligned);
*/
int get_cpuid(char *buffer, size_t sz);
+char *get_cpuid_str(void);
#endif /* __PERF_HEADER_H */
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
index 7591a0c37473..16c06d3ae577 100644
--- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
+++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
@@ -90,6 +90,7 @@ struct intel_pt_decoder {
bool pge;
bool have_tma;
bool have_cyc;
+ bool fixup_last_mtc;
uint64_t pos;
uint64_t last_ip;
uint64_t ip;
@@ -586,10 +587,31 @@ struct intel_pt_calc_cyc_to_tsc_info {
uint64_t tsc_timestamp;
uint64_t timestamp;
bool have_tma;
+ bool fixup_last_mtc;
bool from_mtc;
double cbr_cyc_to_tsc;
};
+/*
+ * MTC provides a 8-bit slice of CTC but the TMA packet only provides the lower
+ * 16 bits of CTC. If mtc_shift > 8 then some of the MTC bits are not in the CTC
+ * provided by the TMA packet. Fix-up the last_mtc calculated from the TMA
+ * packet by copying the missing bits from the current MTC assuming the least
+ * difference between the two, and that the current MTC comes after last_mtc.
+ */
+static void intel_pt_fixup_last_mtc(uint32_t mtc, int mtc_shift,
+ uint32_t *last_mtc)
+{
+ uint32_t first_missing_bit = 1U << (16 - mtc_shift);
+ uint32_t mask = ~(first_missing_bit - 1);
+
+ *last_mtc |= mtc & mask;
+ if (*last_mtc >= mtc) {
+ *last_mtc -= first_missing_bit;
+ *last_mtc &= 0xff;
+ }
+}
+
static int intel_pt_calc_cyc_cb(struct intel_pt_pkt_info *pkt_info)
{
struct intel_pt_decoder *decoder = pkt_info->decoder;
@@ -619,6 +641,11 @@ static int intel_pt_calc_cyc_cb(struct intel_pt_pkt_info *pkt_info)
return 0;
mtc = pkt_info->packet.payload;
+ if (decoder->mtc_shift > 8 && data->fixup_last_mtc) {
+ data->fixup_last_mtc = false;
+ intel_pt_fixup_last_mtc(mtc, decoder->mtc_shift,
+ &data->last_mtc);
+ }
if (mtc > data->last_mtc)
mtc_delta = mtc - data->last_mtc;
else
@@ -687,6 +714,7 @@ static int intel_pt_calc_cyc_cb(struct intel_pt_pkt_info *pkt_info)
data->ctc_delta = 0;
data->have_tma = true;
+ data->fixup_last_mtc = true;
return 0;
@@ -753,6 +781,7 @@ static void intel_pt_calc_cyc_to_tsc(struct intel_pt_decoder *decoder,
.tsc_timestamp = decoder->tsc_timestamp,
.timestamp = decoder->timestamp,
.have_tma = decoder->have_tma,
+ .fixup_last_mtc = decoder->fixup_last_mtc,
.from_mtc = from_mtc,
.cbr_cyc_to_tsc = 0,
};
@@ -1271,6 +1300,7 @@ static void intel_pt_calc_tma(struct intel_pt_decoder *decoder)
}
decoder->ctc_delta = 0;
decoder->have_tma = true;
+ decoder->fixup_last_mtc = true;
intel_pt_log("CTC timestamp " x64_fmt " last MTC %#x CTC rem %#x\n",
decoder->ctc_timestamp, decoder->last_mtc, ctc_rem);
}
@@ -1285,6 +1315,12 @@ static void intel_pt_calc_mtc_timestamp(struct intel_pt_decoder *decoder)
mtc = decoder->packet.payload;
+ if (decoder->mtc_shift > 8 && decoder->fixup_last_mtc) {
+ decoder->fixup_last_mtc = false;
+ intel_pt_fixup_last_mtc(mtc, decoder->mtc_shift,
+ &decoder->last_mtc);
+ }
+
if (mtc > decoder->last_mtc)
mtc_delta = mtc - decoder->last_mtc;
else
@@ -1353,6 +1389,8 @@ static void intel_pt_calc_cyc_timestamp(struct intel_pt_decoder *decoder)
timestamp, decoder->timestamp);
else
decoder->timestamp = timestamp;
+
+ decoder->timestamp_insn_cnt = 0;
}
/* Walk PSB+ packets when already in sync. */
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 18e4519abef2..df85b9efd80f 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1745,9 +1745,8 @@ static int resolve_lbr_callchain_sample(struct thread *thread,
int max_stack)
{
struct ip_callchain *chain = sample->callchain;
- int chain_nr = min(max_stack, (int)chain->nr);
+ int chain_nr = min(max_stack, (int)chain->nr), i;
u8 cpumode = PERF_RECORD_MISC_USER;
- int i, j, err;
u64 ip;
for (i = 0; i < chain_nr; i++) {
@@ -1758,7 +1757,7 @@ static int resolve_lbr_callchain_sample(struct thread *thread,
/* LBR only affects the user callchain */
if (i != chain_nr) {
struct branch_stack *lbr_stack = sample->branch_stack;
- int lbr_nr = lbr_stack->nr;
+ int lbr_nr = lbr_stack->nr, j;
/*
* LBR callstack can only get user call chain.
* The mix_chain_nr is kernel call chain
@@ -1772,6 +1771,7 @@ static int resolve_lbr_callchain_sample(struct thread *thread,
int mix_chain_nr = i + 1 + lbr_nr + 1;
for (j = 0; j < mix_chain_nr; j++) {
+ int err;
if (callchain_param.order == ORDER_CALLEE) {
if (j < i + 1)
ip = chain->ips[j];
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 33546c3ac1fe..4e778eae1510 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -924,6 +924,7 @@ config_term_avail(int term_type, struct parse_events_error *err)
case PARSE_EVENTS__TERM_TYPE_CONFIG1:
case PARSE_EVENTS__TERM_TYPE_CONFIG2:
case PARSE_EVENTS__TERM_TYPE_NAME:
+ case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
return true;
default:
if (!err)
@@ -1458,7 +1459,7 @@ comp_pmu(const void *p1, const void *p2)
struct perf_pmu_event_symbol *pmu1 = (struct perf_pmu_event_symbol *) p1;
struct perf_pmu_event_symbol *pmu2 = (struct perf_pmu_event_symbol *) p2;
- return strcmp(pmu1->symbol, pmu2->symbol);
+ return strcasecmp(pmu1->symbol, pmu2->symbol);
}
static void perf_pmu__parse_cleanup(void)
@@ -2263,7 +2264,8 @@ out_enomem:
/*
* Print the help text for the event symbols:
*/
-void print_events(const char *event_glob, bool name_only)
+void print_events(const char *event_glob, bool name_only, bool quiet_flag,
+ bool long_desc)
{
print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
@@ -2273,7 +2275,7 @@ void print_events(const char *event_glob, bool name_only)
print_hwcache_events(event_glob, name_only);
- print_pmu_events(event_glob, name_only);
+ print_pmu_events(event_glob, name_only, quiet_flag, long_desc);
if (event_glob != NULL)
return;
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 8d09a976fca8..da246a3ddb69 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -172,7 +172,8 @@ void parse_events_update_lists(struct list_head *list_event,
void parse_events_evlist_error(struct parse_events_evlist *data,
int idx, const char *str);
-void print_events(const char *event_glob, bool name_only);
+void print_events(const char *event_glob, bool name_only, bool quiet,
+ bool long_desc);
struct event_symbol {
const char *symbol;
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 2babcdf62839..b1474dcadfa2 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -12,6 +12,9 @@
#include "pmu.h"
#include "parse-events.h"
#include "cpumap.h"
+#include "header.h"
+#include "pmu-events/pmu-events.h"
+#include "cache.h"
struct perf_pmu_format {
char *name;
@@ -220,7 +223,8 @@ static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias,
}
static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
- char *desc __maybe_unused, char *val)
+ char *desc, char *val, char *long_desc,
+ char *topic)
{
struct perf_pmu_alias *alias;
int ret;
@@ -253,6 +257,11 @@ static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name,
perf_pmu__parse_snapshot(alias, dir, name);
}
+ alias->desc = desc ? strdup(desc) : NULL;
+ alias->long_desc = long_desc ? strdup(long_desc) :
+ desc ? strdup(desc) : NULL;
+ alias->topic = topic ? strdup(topic) : NULL;
+
list_add_tail(&alias->list, list);
return 0;
@@ -269,7 +278,7 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI
buf[ret] = 0;
- return __perf_pmu__new_alias(list, dir, name, NULL, buf);
+ return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL);
}
static inline bool pmu_alias_info_file(char *name)
@@ -473,6 +482,68 @@ static struct cpu_map *pmu_cpumask(const char *name)
return cpus;
}
+/*
+ * Return the CPU id as a raw string.
+ *
+ * Each architecture should provide a more precise id string that
+ * can be use to match the architecture's "mapfile".
+ */
+char * __weak get_cpuid_str(void)
+{
+ return NULL;
+}
+
+/*
+ * From the pmu_events_map, find the table of PMU events that corresponds
+ * to the current running CPU. Then, add all PMU events from that table
+ * as aliases.
+ */
+static void pmu_add_cpu_aliases(struct list_head *head)
+{
+ int i;
+ struct pmu_events_map *map;
+ struct pmu_event *pe;
+ char *cpuid;
+
+ cpuid = getenv("PERF_CPUID");
+ if (cpuid)
+ cpuid = strdup(cpuid);
+ if (!cpuid)
+ cpuid = get_cpuid_str();
+ if (!cpuid)
+ return;
+
+ pr_debug("Using CPUID %s\n", cpuid);
+
+ i = 0;
+ while (1) {
+ map = &pmu_events_map[i++];
+ if (!map->table)
+ goto out;
+
+ if (!strcmp(map->cpuid, cpuid))
+ break;
+ }
+
+ /*
+ * Found a matching PMU events table. Create aliases
+ */
+ i = 0;
+ while (1) {
+ pe = &map->table[i++];
+ if (!pe->name)
+ break;
+
+ /* need type casts to override 'const' */
+ __perf_pmu__new_alias(head, NULL, (char *)pe->name,
+ (char *)pe->desc, (char *)pe->event,
+ (char *)pe->long_desc, (char *)pe->topic);
+ }
+
+out:
+ free(cpuid);
+}
+
struct perf_event_attr * __weak
perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused)
{
@@ -497,6 +568,9 @@ static struct perf_pmu *pmu_lookup(const char *name)
if (pmu_aliases(name, &aliases))
return NULL;
+ if (!strcmp(name, "cpu"))
+ pmu_add_cpu_aliases(&aliases);
+
if (pmu_type(name, &type))
return NULL;
@@ -983,21 +1057,63 @@ static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu,
return buf;
}
-static int cmp_string(const void *a, const void *b)
+struct sevent {
+ char *name;
+ char *desc;
+ char *topic;
+};
+
+static int cmp_sevent(const void *a, const void *b)
{
- const char * const *as = a;
- const char * const *bs = b;
- return strcmp(*as, *bs);
+ const struct sevent *as = a;
+ const struct sevent *bs = b;
+
+ /* Put extra events last */
+ if (!!as->desc != !!bs->desc)
+ return !!as->desc - !!bs->desc;
+ if (as->topic && bs->topic) {
+ int n = strcmp(as->topic, bs->topic);
+
+ if (n)
+ return n;
+ }
+ return strcmp(as->name, bs->name);
}
-void print_pmu_events(const char *event_glob, bool name_only)
+static void wordwrap(char *s, int start, int max, int corr)
+{
+ int column = start;
+ int n;
+
+ while (*s) {
+ int wlen = strcspn(s, " \t");
+
+ if (column + wlen >= max && column > start) {
+ printf("\n%*s", start, "");
+ column = start + corr;
+ }
+ n = printf("%s%.*s", column > start ? " " : "", wlen, s);
+ if (n <= 0)
+ break;
+ s += wlen;
+ column += n;
+ while (isspace(*s))
+ s++;
+ }
+}
+
+void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag,
+ bool long_desc)
{
struct perf_pmu *pmu;
struct perf_pmu_alias *alias;
char buf[1024];
int printed = 0;
int len, j;
- char **aliases;
+ struct sevent *aliases;
+ int numdesc = 0;
+ int columns = pager_get_columns();
+ char *topic = NULL;
pmu = NULL;
len = 0;
@@ -1007,14 +1123,15 @@ void print_pmu_events(const char *event_glob, bool name_only)
if (pmu->selectable)
len++;
}
- aliases = zalloc(sizeof(char *) * len);
+ aliases = zalloc(sizeof(struct sevent) * len);
if (!aliases)
goto out_enomem;
pmu = NULL;
j = 0;
while ((pmu = perf_pmu__scan(pmu)) != NULL) {
list_for_each_entry(alias, &pmu->aliases, list) {
- char *name = format_alias(buf, sizeof(buf), pmu, alias);
+ char *name = alias->desc ? alias->name :
+ format_alias(buf, sizeof(buf), pmu, alias);
bool is_cpu = !strcmp(pmu->name, "cpu");
if (event_glob != NULL &&
@@ -1023,12 +1140,21 @@ void print_pmu_events(const char *event_glob, bool name_only)
event_glob))))
continue;
- if (is_cpu && !name_only)
+ if (is_cpu && !name_only && !alias->desc)
name = format_alias_or(buf, sizeof(buf), pmu, alias);
- aliases[j] = strdup(name);
- if (aliases[j] == NULL)
+ aliases[j].name = name;
+ if (is_cpu && !name_only && !alias->desc)
+ aliases[j].name = format_alias_or(buf,
+ sizeof(buf),
+ pmu, alias);
+ aliases[j].name = strdup(aliases[j].name);
+ if (!aliases[j].name)
goto out_enomem;
+
+ aliases[j].desc = long_desc ? alias->long_desc :
+ alias->desc;
+ aliases[j].topic = alias->topic;
j++;
}
if (pmu->selectable &&
@@ -1036,25 +1162,39 @@ void print_pmu_events(const char *event_glob, bool name_only)
char *s;
if (asprintf(&s, "%s//", pmu->name) < 0)
goto out_enomem;
- aliases[j] = s;
+ aliases[j].name = s;
j++;
}
}
len = j;
- qsort(aliases, len, sizeof(char *), cmp_string);
+ qsort(aliases, len, sizeof(struct sevent), cmp_sevent);
for (j = 0; j < len; j++) {
if (name_only) {
- printf("%s ", aliases[j]);
+ printf("%s ", aliases[j].name);
continue;
}
- printf(" %-50s [Kernel PMU event]\n", aliases[j]);
+ if (aliases[j].desc && !quiet_flag) {
+ if (numdesc++ == 0)
+ printf("\n");
+ if (aliases[j].topic && (!topic ||
+ strcmp(topic, aliases[j].topic))) {
+ printf("%s%s:\n", topic ? "\n" : "",
+ aliases[j].topic);
+ topic = aliases[j].topic;
+ }
+ printf(" %-50s\n", aliases[j].name);
+ printf("%*s", 8, "[");
+ wordwrap(aliases[j].desc, 8, columns, 0);
+ printf("]\n");
+ } else
+ printf(" %-50s [Kernel PMU event]\n", aliases[j].name);
printed++;
}
if (printed && pager_in_use())
printf("\n");
out_free:
for (j = 0; j < len; j++)
- zfree(&aliases[j]);
+ zfree(&aliases[j].name);
zfree(&aliases);
return;
diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h
index 743422ad900b..25712034c815 100644
--- a/tools/perf/util/pmu.h
+++ b/tools/perf/util/pmu.h
@@ -40,6 +40,9 @@ struct perf_pmu_info {
struct perf_pmu_alias {
char *name;
+ char *desc;
+ char *long_desc;
+ char *topic;
struct list_head terms; /* HEAD struct parse_events_term -> list */
struct list_head list; /* ELEM */
char unit[UNIT_MAX_LEN+1];
@@ -71,7 +74,8 @@ int perf_pmu__format_parse(char *dir, struct list_head *head);
struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu);
-void print_pmu_events(const char *event_glob, bool name_only);
+void print_pmu_events(const char *event_glob, bool name_only, bool quiet,
+ bool long_desc);
bool pmu_have_event(const char *pname, const char *name);
int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt,
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index fcfbef07b92d..d281ae2b54e8 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -213,7 +213,7 @@ static int convert_exec_to_group(const char *exec, char **result)
goto out;
}
- for (ptr2 = ptr1; ptr2 != '\0'; ptr2++) {
+ for (ptr2 = ptr1; *ptr2 != '\0'; ptr2++) {
if (!isalnum(*ptr2) && *ptr2 != '_') {
*ptr2 = '\0';
break;
diff --git a/tools/perf/util/strbuf.h b/tools/perf/util/strbuf.h
index b268a6648a5d..318424ea561d 100644
--- a/tools/perf/util/strbuf.h
+++ b/tools/perf/util/strbuf.h
@@ -66,9 +66,8 @@ static inline ssize_t strbuf_avail(const struct strbuf *sb) {
int strbuf_grow(struct strbuf *buf, size_t);
static inline int strbuf_setlen(struct strbuf *sb, size_t len) {
- int ret;
if (!sb->alloc) {
- ret = strbuf_grow(sb, 0);
+ int ret = strbuf_grow(sb, 0);
if (ret)
return ret;
}
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c
index 8b10a55410a2..f5af87f66663 100644
--- a/tools/perf/util/thread.c
+++ b/tools/perf/util/thread.c
@@ -14,13 +14,12 @@
int thread__init_map_groups(struct thread *thread, struct machine *machine)
{
- struct thread *leader;
pid_t pid = thread->pid_;
if (pid == thread->tid || pid == -1) {
thread->mg = map_groups__new(machine);
} else {
- leader = __machine__findnew_thread(machine, pid, pid);
+ struct thread *leader = __machine__findnew_thread(machine, pid, pid);
if (leader) {
thread->mg = map_groups__get(leader->mg);
thread__put(leader);
@@ -130,11 +129,10 @@ int __thread__set_comm(struct thread *thread, const char *str, u64 timestamp,
bool exec)
{
struct comm *new, *curr = thread__comm(thread);
- int err;
/* Override the default :tid entry */
if (!thread->comm_set) {
- err = comm__override(curr, str, timestamp, exec);
+ int err = comm__override(curr, str, timestamp, exec);
if (err)
return err;
} else {
@@ -270,10 +268,9 @@ static int thread__clone_map_groups(struct thread *thread,
int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
{
- int err;
-
if (parent->comm_set) {
const char *comm = thread__comm_str(parent);
+ int err;
if (!comm)
return -ENOMEM;
err = thread__set_comm(thread, comm, timestamp);
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