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Date: Mon, 26 Nov 2012 13:22:54 +0100
From: Bernhard Rosenkraenzer <bernhard.rosenkranzer@...aro.org>
To: linux-kernel@...r.kernel.org
Cc: mingo@...nel.org, acme@...stprotocols.net, a.p.zijlstra@...llo.nl,
paulus@...ba.org
Subject: [PATCH v3] Perf on Android
This is another attempt at getting perf ot work on Android - it's rebased to
3.7-rc6 and cleaned up from the earlier version. Also adds support for Android
4.2.
Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@...aro.org>
---
tools/perf/Makefile | 17 +++++-
tools/perf/builtin-record.c | 33 +++++++++++
tools/perf/builtin-test.c | 7 +++
tools/perf/compat-android.h | 106
++++++++++++++++++++++++++++++++++++
tools/perf/config/feature-tests.mak | 13 +++++
tools/perf/util/util.h | 2 +
6 files changed, 175 insertions(+), 3 deletions(-)
create mode 100644 tools/perf/compat-android.h
diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 00deed4d..f74ea4b 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -104,7 +104,7 @@ ifdef PARSER_DEBUG
endif
CFLAGS = -fno-omit-frame-pointer -ggdb3 -funwind-tables -Wall -Wextra -
std=gnu99 $(CFLAGS_WERROR) $(CFLAGS_OPTIMIZE) $(EXTRA_WARNINGS)
$(EXTRA_CFLAGS) $(PARSER_DEBUG_CFLAGS)
-EXTLIBS = -lpthread -lrt -lelf -lm
+EXTLIBS = -lpthread -lelf -lm
ALL_CFLAGS = $(CFLAGS) -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -
D_GNU_SOURCE
ALL_LDFLAGS = $(LDFLAGS)
STRIP ?= strip
@@ -471,7 +471,14 @@ FLAGS_LIBELF=$(ALL_CFLAGS) $(ALL_LDFLAGS) $(EXTLIBS)
ifneq ($(call try-cc,$(SOURCE_LIBELF),$(FLAGS_LIBELF)),y)
FLAGS_GLIBC=$(ALL_CFLAGS) $(ALL_LDFLAGS)
ifneq ($(call try-cc,$(SOURCE_GLIBC),$(FLAGS_GLIBC)),y)
- msg := $(error No gnu/libc-version.h found, please install glibc-
dev[el]/glibc-static);
+ ifeq ($(call try-cc,$(SOURCE_BIONIC),$(FLAGS_GLIBC)),y)
+ # Found Bionic instead of glibc...
+ # That works too, but needs a bit of special treatment
+ BASIC_CFLAGS += -DANDROID -DHAVE_STRLCPY -include $(CURDIR)/compat-
android.h
+ ANDROID := 1
+ else
+ msg := $(error No gnu/libc-version.h found, please install glibc-
dev[el]/glibc-static);
+ endif
else
NO_LIBELF := 1
NO_DWARF := 1
@@ -486,6 +493,10 @@ else
endif # SOURCE_LIBELF
endif # NO_LIBELF
+ifneq ($(ANDROID),1)
+EXTLIBS += -lrt
+endif
+
ifndef NO_LIBUNWIND
# for linking with debug library, run like:
# make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/
@@ -920,7 +931,7 @@ $(LIB_FILE): $(LIB_OBJS)
# libtraceevent.a
$(LIBTRACEEVENT):
- $(QUIET_SUBDIR0)$(TRACE_EVENT_DIR) $(QUIET_SUBDIR1) O=$(OUTPUT)
libtraceevent.a
+ $(QUIET_SUBDIR0)$(TRACE_EVENT_DIR) $(QUIET_SUBDIR1) CFLAGS="$(ALL_CFLAGS)"
O=$(OUTPUT) libtraceevent.a
$(LIBTRACEEVENT)-clean:
$(QUIET_SUBDIR0)$(TRACE_EVENT_DIR) $(QUIET_SUBDIR1) O=$(OUTPUT) clean
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index e9231659..451db23 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -27,10 +27,43 @@
#include "util/cpumap.h"
#include "util/thread_map.h"
+#include <stdlib.h>
#include <unistd.h>
#include <sched.h>
#include <sys/mman.h>
+#ifdef ANDROID
+/* While stdlib.h has a prototype for it,
+ Bionic doesn't actually implement on_exit() */
+#ifndef ATEXIT_MAX
+#define ATEXIT_MAX 32
+#endif
+static int __on_exit_count = 0;
+typedef void (*on_exit_func_t)(int, void*);
+static on_exit_func_t __on_exit_funcs[ATEXIT_MAX];
+static void *__on_exit_args[ATEXIT_MAX];
+static int __exitcode = 0;
+static void __handle_on_exit_funcs();
+static int on_exit(on_exit_func_t function, void *arg);
+#define exit(x) (exit)(__exitcode = (x))
+
+static int on_exit(on_exit_func_t function, void *arg) {
+ if(__on_exit_count == ATEXIT_MAX)
+ return ENOMEM;
+ else if(__on_exit_count == 0)
+ atexit(__handle_on_exit_funcs);
+ __on_exit_funcs[__on_exit_count] = function;
+ __on_exit_args[__on_exit_count++] = arg;
+ return 0;
+}
+
+static void __handle_on_exit_funcs() {
+ for(int i=0; i<__on_exit_count; i++) {
+ __on_exit_funcs[i](__exitcode, __on_exit_args[i]);
+ }
+}
+#endif
+
enum write_mode_t {
WRITE_FORCE,
WRITE_APPEND
diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c
index 484f26c..70a9cd6 100644
--- a/tools/perf/builtin-test.c
+++ b/tools/perf/builtin-test.c
@@ -471,10 +471,17 @@ static int test__basic_mmap(void)
.watermark = 0,
};
cpu_set_t cpu_set;
+#ifndef ANDROID
const char *syscall_names[] = { "getsid", "getppid", "getpgrp",
"getpgid", };
pid_t (*syscalls[])(void) = { (void *)getsid, getppid, getpgrp,
(void*)getpgid };
+#else
+ /* No getsid() on Android */
+ const char *syscall_names[] = { "getppid", "getpgrp",
+ "getpgid", };
+ pid_t (*syscalls[])(void) = { getppid, getpgrp, (void*)getpgid };
+#endif
#define nsyscalls ARRAY_SIZE(syscall_names)
int ids[nsyscalls];
unsigned int nr_events[nsyscalls],
diff --git a/tools/perf/compat-android.h b/tools/perf/compat-android.h
new file mode 100644
index 0000000..b8fb936
--- /dev/null
+++ b/tools/perf/compat-android.h
@@ -0,0 +1,106 @@
+/* Android compatibility header
+ * Provides missing bits in Bionic on Android, ignored
+ * on regular Linux.
+ *
+ * Written by Bernhard.Rosenkranzer@...aro.org
+ *
+ * Released into the public domain. Do with this file
+ * whatever you want.
+ */
+#ifdef ANDROID
+/* Bionic has its own idea about ALIGN, and kills other definitions.
+ * Done outside the multiple-inclusion wrapper to make sure we
+ * can override Bionic's ALIGN by simply including compat-android.h
+ * again after including Bionic headers.
+ */
+#undef ALIGN
+#undef __ALIGN_MASK
+#define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1)
+#define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask))
+
+#ifndef _COMPAT_ANDROID_H_
+#define _COMPAT_ANDROID_H_ 1
+#include <stdio.h>
+#include <signal.h>
+#include <asm/page.h> /* for PAGE_SIZE */
+#include <asm/termios.h> /* for winsize */
+
+#ifndef __WORDSIZE
+#include <stdint.h>
+#define __WORDSIZE _BITSIZE
+#endif
+
+#ifndef roundup
+#define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
+#endif
+
+#ifndef __force
+#define __force
+#endif
+
+#ifndef __le32
+#define __le32 uint32_t
+#endif
+
+/* Assorted functions that are missing from Bionic */
+/* Android prior to 4.2 lacks psignal().
+ * What we're doing here is fairly evil - but necessary since
+ * Bionic doesn't export any version identifier or the likes.
+ * We do know that 4.2 is the version introducing psignal() and
+ * also KLOG_CONSOLE_OFF -- completely unrelated, but something
+ * we can check for...
+ */
+#include <sys/klog.h>
+#ifndef KLOG_CONSOLE_OFF
+static void psignal(int sig, const char *s)
+{
+ if(sig >= 0 && sig < NSIG) {
+ if(s)
+ fprintf(stderr, "%s: %s\n", s, sys_siglist[sig]);
+ else
+ fprintf(stderr, "%s\n", sys_siglist[sig]);
+ } else {
+ if(s)
+ fprintf(stderr, "%s: invalid signal\n", s);
+ else
+ fputs("invalid signal\n", stderr);
+ }
+}
+#endif
+
+static ssize_t getline(char **lineptr, size_t *n, FILE *stream)
+{
+ size_t ret = 0;
+
+ if (!lineptr || !n || !stream)
+ return -1;
+
+ if(!*lineptr) {
+ *n = 128;
+ *lineptr = (char*)malloc(*n);
+ if(!*lineptr)
+ return -1;
+ }
+
+ while(!feof(stream) && !ferror(stream)) {
+ int c;
+ if(ret == *n) {
+ *n += 128;
+ *lineptr = (char*)realloc(*lineptr, *n);
+ if(!*lineptr) {
+ *n = 0;
+ return -1;
+ }
+ }
+ c = fgetc(stream);
+ if(c == EOF)
+ break;
+ *lineptr[ret++] = c;
+ if(c == '\n')
+ break;
+ }
+ *lineptr[ret] = 0;
+ return ret;
+}
+#endif
+#endif
diff --git a/tools/perf/config/feature-tests.mak b/tools/perf/config/feature-
tests.mak
index 4add41b..76ec8bf 100644
--- a/tools/perf/config/feature-tests.mak
+++ b/tools/perf/config/feature-tests.mak
@@ -43,6 +43,19 @@ int main(void)
}
endef
+define SOURCE_BIONIC
+#include <android/api-level.h>
+
+int main(void)
+{
+#ifndef __ANDROID_API__
+ error out
+#else
+ return 0;
+#endif
+}
+endef
+
define SOURCE_ELF_MMAP
#include <libelf.h>
int main(void)
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 70fa70b..10e8a47 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -72,7 +72,9 @@
#include <inttypes.h>
#include <linux/magic.h>
#include "types.h"
+#ifndef ANDROID
#include <sys/ttydefaults.h>
+#endif
extern const char *graph_line;
extern const char *graph_dotted_line;
--
1.7.11.3
--
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