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Message-Id: <20241104-perf_syscalltbl-v1-16-9adae5c761ef@rivosinc.com>
Date: Mon, 04 Nov 2024 13:06:18 -0800
From: Charlie Jenkins <charlie@...osinc.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Namhyung Kim <namhyung@...nel.org>, Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>,
Adrian Hunter <adrian.hunter@...el.com>,
Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
Mickaël Salaün <mic@...ikod.net>,
Günther Noack <gnoack@...gle.com>,
Christian Brauner <brauner@...nel.org>, Guo Ren <guoren@...nel.org>,
John Garry <john.g.garry@...cle.com>, Will Deacon <will@...nel.org>,
James Clark <james.clark@...aro.org>, Mike Leach <mike.leach@...aro.org>,
Leo Yan <leo.yan@...ux.dev>, Jonathan Corbet <corbet@....net>,
Arnd Bergmann <arnd@...db.de>
Cc: linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
linux-riscv@...ts.infradead.org, linux-security-module@...r.kernel.org,
bpf@...r.kernel.org, linux-csky@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-doc@...r.kernel.org,
Charlie Jenkins <charlie@...osinc.com>
Subject: [PATCH RFT 16/16] perf tools: Remove dependency on libaudit
All architectures now support HAVE_SYSCALL_TABLE_SUPPORT, so the flag is
no longer needed. With the removal of the flag, the related
GENERIC_SYSCALL_TABLE can also be removed. libaudit was only used as a
fallback for when HAVE_SYSCALL_TABLE_SUPPORT was not defined, so
libaudit is also no longer needed for any architecture.
Signed-off-by: Charlie Jenkins <charlie@...osinc.com>
---
Documentation/admin-guide/workload-tracing.rst | 2 +-
tools/build/feature/Makefile | 4 --
tools/build/feature/test-libaudit.c | 11 ------
tools/perf/Documentation/perf-check.txt | 1 -
tools/perf/Makefile.config | 31 +--------------
tools/perf/Makefile.perf | 14 -------
tools/perf/builtin-check.c | 1 -
tools/perf/builtin-help.c | 2 -
tools/perf/builtin-trace.c | 30 ---------------
tools/perf/perf.c | 6 +--
tools/perf/tests/make | 7 +---
tools/perf/util/env.c | 4 +-
tools/perf/util/generate-cmdlist.sh | 4 +-
tools/perf/util/syscalltbl.c | 52 --------------------------
14 files changed, 10 insertions(+), 159 deletions(-)
diff --git a/Documentation/admin-guide/workload-tracing.rst b/Documentation/admin-guide/workload-tracing.rst
index b2e254ec8ee8..6be38c1b9c5b 100644
--- a/Documentation/admin-guide/workload-tracing.rst
+++ b/Documentation/admin-guide/workload-tracing.rst
@@ -83,7 +83,7 @@ scripts/ver_linux is a good way to check if your system already has
the necessary tools::
sudo apt-get build-essentials flex bison yacc
- sudo apt install libelf-dev systemtap-sdt-dev libaudit-dev libslang2-dev libperl-dev libdw-dev
+ sudo apt install libelf-dev systemtap-sdt-dev libslang2-dev libperl-dev libdw-dev
cscope is a good tool to browse kernel sources. Let's install it now::
diff --git a/tools/build/feature/Makefile b/tools/build/feature/Makefile
index 1658596188bf..728420d3888f 100644
--- a/tools/build/feature/Makefile
+++ b/tools/build/feature/Makefile
@@ -15,7 +15,6 @@ FILES= \
test-gtk2.bin \
test-gtk2-infobar.bin \
test-hello.bin \
- test-libaudit.bin \
test-libbfd.bin \
test-libbfd-buildid.bin \
test-disassembler-four-args.bin \
@@ -236,9 +235,6 @@ $(OUTPUT)test-libunwind-debug-frame-arm.bin:
$(OUTPUT)test-libunwind-debug-frame-aarch64.bin:
$(BUILD) -lelf -llzma -lunwind-aarch64
-$(OUTPUT)test-libaudit.bin:
- $(BUILD) -laudit
-
$(OUTPUT)test-libslang.bin:
$(BUILD) -lslang
diff --git a/tools/build/feature/test-libaudit.c b/tools/build/feature/test-libaudit.c
deleted file mode 100644
index f5b0863fa1ec..000000000000
--- a/tools/build/feature/test-libaudit.c
+++ /dev/null
@@ -1,11 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <libaudit.h>
-
-extern int printf(const char *format, ...);
-
-int main(void)
-{
- printf("error message: %s\n", audit_errno_to_name(0));
-
- return audit_open();
-}
diff --git a/tools/perf/Documentation/perf-check.txt b/tools/perf/Documentation/perf-check.txt
index 10f69fb6850b..27e6b97961f3 100644
--- a/tools/perf/Documentation/perf-check.txt
+++ b/tools/perf/Documentation/perf-check.txt
@@ -51,7 +51,6 @@ feature::
dwarf_getlocations / HAVE_DWARF_GETLOCATIONS_SUPPORT
dwarf-unwind / HAVE_DWARF_UNWIND_SUPPORT
auxtrace / HAVE_AUXTRACE_SUPPORT
- libaudit / HAVE_LIBAUDIT_SUPPORT
libbfd / HAVE_LIBBFD_SUPPORT
libcapstone / HAVE_LIBCAPSTONE_SUPPORT
libcrypto / HAVE_LIBCRYPTO_SUPPORT
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 787be3201eec..352f32f5cb81 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -28,20 +28,7 @@ include $(srctree)/tools/scripts/Makefile.arch
$(call detected_var,SRCARCH)
-ifneq ($(NO_SYSCALL_TABLE),1)
- NO_SYSCALL_TABLE := 1
-
- # architectures that use the generic syscall table scripts
- ifeq ($(SRCARCH),$(filter $(SRCARCH),riscv arc csky arm sh sparc xtensa x86 alpha parisc arm64 loongarch mips powerpc s390))
- NO_SYSCALL_TABLE := 0
- CFLAGS += -DGENERIC_SYSCALL_TABLE
- CFLAGS += -I$(OUTPUT)arch/$(SRCARCH)/include/generated
- endif
-
- ifneq ($(NO_SYSCALL_TABLE),1)
- CFLAGS += -DHAVE_SYSCALL_TABLE_SUPPORT
- endif
-endif
+CFLAGS += -I$(OUTPUT)arch/$(SRCARCH)/include/generated
# Additional ARCH settings for ppc
ifeq ($(SRCARCH),powerpc)
@@ -784,21 +771,7 @@ ifndef NO_LIBUNWIND
endif
ifneq ($(NO_LIBTRACEEVENT),1)
- ifeq ($(NO_SYSCALL_TABLE),0)
- $(call detected,CONFIG_TRACE)
- else
- ifndef NO_LIBAUDIT
- $(call feature_check,libaudit)
- ifneq ($(feature-libaudit), 1)
- $(warning No libaudit.h found, disables 'trace' tool, please install audit-libs-devel or libaudit-dev)
- NO_LIBAUDIT := 1
- else
- CFLAGS += -DHAVE_LIBAUDIT_SUPPORT
- EXTLIBS += -laudit
- $(call detected,CONFIG_TRACE)
- endif
- endif
- endif
+ $(call detected,CONFIG_TRACE)
endif
ifndef NO_LIBCRYPTO
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 410d850f7b9a..a21d4d0994af 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -59,8 +59,6 @@ include ../scripts/utilities.mak
#
# Define NO_LIBNUMA if you do not want numa perf benchmark
#
-# Define NO_LIBAUDIT if you do not want libaudit support
-#
# Define NO_LIBBIONIC if you do not want bionic support
#
# Define NO_LIBCRYPTO if you do not want libcrypto (openssl) support
@@ -119,10 +117,6 @@ include ../scripts/utilities.mak
#
# Define LIBBPF_DYNAMIC to enable libbpf dynamic linking.
#
-# Define NO_SYSCALL_TABLE=1 to disable the use of syscall id to/from name tables
-# generated from the kernel .tbl or unistd.h files and use, if available, libaudit
-# for doing the conversions to/from strings/id.
-#
# Define NO_LIBPFM4 to disable libpfm4 events extension.
#
# Define NO_LIBDEBUGINFOD if you do not want support debuginfod
@@ -310,10 +304,7 @@ ifeq ($(filter feature-dump,$(MAKECMDGOALS)),feature-dump)
FEATURE_TESTS := all
endif
endif
-# architectures that use the generic syscall table
-ifeq ($(SRCARCH),$(filter $(SRCARCH),riscv arc csky arm sh sparc xtensa x86 alpha parisc arm64 loongarch mips powerpc s390))
include $(srctree)/tools/perf/scripts/Makefile.syscalls
-endif
include Makefile.config
endif
@@ -1098,11 +1089,6 @@ endif
$(INSTALL) $(OUTPUT)perf-archive -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)'
$(call QUIET_INSTALL, perf-iostat) \
$(INSTALL) $(OUTPUT)perf-iostat -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)'
-ifndef NO_LIBAUDIT
- $(call QUIET_INSTALL, strace/groups) \
- $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(STRACE_GROUPS_INSTDIR_SQ)'; \
- $(INSTALL) trace/strace/groups/* -m 644 -t '$(DESTDIR_SQ)$(STRACE_GROUPS_INSTDIR_SQ)'
-endif
ifndef NO_LIBPERL
$(call QUIET_INSTALL, perl-scripts) \
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/Perf-Trace-Util/lib/Perf/Trace'; \
diff --git a/tools/perf/builtin-check.c b/tools/perf/builtin-check.c
index 0b76b6e42b78..5af0987d7d4c 100644
--- a/tools/perf/builtin-check.c
+++ b/tools/perf/builtin-check.c
@@ -31,7 +31,6 @@ struct feature_status supported_features[] = {
FEATURE_STATUS("dwarf_getlocations", HAVE_DWARF_GETLOCATIONS_SUPPORT),
FEATURE_STATUS("dwarf-unwind", HAVE_DWARF_UNWIND_SUPPORT),
FEATURE_STATUS("auxtrace", HAVE_AUXTRACE_SUPPORT),
- FEATURE_STATUS("libaudit", HAVE_LIBAUDIT_SUPPORT),
FEATURE_STATUS("libbfd", HAVE_LIBBFD_SUPPORT),
FEATURE_STATUS("libcapstone", HAVE_LIBCAPSTONE_SUPPORT),
FEATURE_STATUS("libcrypto", HAVE_LIBCRYPTO_SUPPORT),
diff --git a/tools/perf/builtin-help.c b/tools/perf/builtin-help.c
index 0854d3cd9f6a..7be6fb6df595 100644
--- a/tools/perf/builtin-help.c
+++ b/tools/perf/builtin-help.c
@@ -447,9 +447,7 @@ int cmd_help(int argc, const char **argv)
#ifdef HAVE_LIBELF_SUPPORT
"probe",
#endif
-#if defined(HAVE_LIBAUDIT_SUPPORT) || defined(HAVE_SYSCALL_TABLE_SUPPORT)
"trace",
-#endif
NULL };
const char *builtin_help_usage[] = {
"perf help [--all] [--man|--web|--info] [command]",
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index d3f11b90d025..0374dedaa2ef 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -2069,30 +2069,11 @@ static int trace__read_syscall_info(struct trace *trace, int id)
const char *name = syscalltbl__name(trace->sctbl, id);
int err;
-#ifdef HAVE_SYSCALL_TABLE_SUPPORT
if (trace->syscalls.table == NULL) {
trace->syscalls.table = calloc(trace->sctbl->syscalls.max_id + 1, sizeof(*sc));
if (trace->syscalls.table == NULL)
return -ENOMEM;
}
-#else
- if (id > trace->sctbl->syscalls.max_id || (id == 0 && trace->syscalls.table == NULL)) {
- // When using libaudit we don't know beforehand what is the max syscall id
- struct syscall *table = realloc(trace->syscalls.table, (id + 1) * sizeof(*sc));
-
- if (table == NULL)
- return -ENOMEM;
-
- // Need to memset from offset 0 and +1 members if brand new
- if (trace->syscalls.table == NULL)
- memset(table, 0, (id + 1) * sizeof(*sc));
- else
- memset(table + trace->sctbl->syscalls.max_id + 1, 0, (id - trace->sctbl->syscalls.max_id) * sizeof(*sc));
-
- trace->syscalls.table = table;
- trace->sctbl->syscalls.max_id = id;
- }
-#endif
sc = trace->syscalls.table + id;
if (sc->nonexistent)
return -EEXIST;
@@ -2439,18 +2420,7 @@ static struct syscall *trace__syscall_info(struct trace *trace,
err = -EINVAL;
-#ifdef HAVE_SYSCALL_TABLE_SUPPORT
if (id > trace->sctbl->syscalls.max_id) {
-#else
- if (id >= trace->sctbl->syscalls.max_id) {
- /*
- * With libaudit we don't know beforehand what is the max_id,
- * so we let trace__read_syscall_info() figure that out as we
- * go on reading syscalls.
- */
- err = trace__read_syscall_info(trace, id);
- if (err)
-#endif
goto out_cant_read;
}
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 4def800f4089..9f99c6979409 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -84,7 +84,7 @@ static struct cmd_struct commands[] = {
#endif
{ "kvm", cmd_kvm, 0 },
{ "test", cmd_test, 0 },
-#if defined(HAVE_LIBTRACEEVENT) && (defined(HAVE_LIBAUDIT_SUPPORT) || defined(HAVE_SYSCALL_TABLE_SUPPORT))
+#if defined(HAVE_LIBTRACEEVENT)
{ "trace", cmd_trace, 0 },
#endif
{ "inject", cmd_inject, 0 },
@@ -514,10 +514,6 @@ int main(int argc, const char **argv)
fprintf(stderr,
"trace command not available: missing libtraceevent devel package at build time.\n");
goto out;
-#elif !defined(HAVE_LIBAUDIT_SUPPORT) && !defined(HAVE_SYSCALL_TABLE_SUPPORT)
- fprintf(stderr,
- "trace command not available: missing audit-libs devel package at build time.\n");
- goto out;
#else
setup_path();
argv[0] = "trace";
diff --git a/tools/perf/tests/make b/tools/perf/tests/make
index a5040772043f..0d2b6c85dc03 100644
--- a/tools/perf/tests/make
+++ b/tools/perf/tests/make
@@ -86,7 +86,6 @@ make_no_libdw_dwarf_unwind := NO_LIBDW_DWARF_UNWIND=1
make_no_backtrace := NO_BACKTRACE=1
make_no_libcapstone := NO_CAPSTONE=1
make_no_libnuma := NO_LIBNUMA=1
-make_no_libaudit := NO_LIBAUDIT=1
make_no_libbionic := NO_LIBBIONIC=1
make_no_auxtrace := NO_AUXTRACE=1
make_no_libbpf := NO_LIBBPF=1
@@ -97,7 +96,6 @@ make_no_libllvm := NO_LIBLLVM=1
make_with_babeltrace:= LIBBABELTRACE=1
make_with_coresight := CORESIGHT=1
make_no_sdt := NO_SDT=1
-make_no_syscall_tbl := NO_SYSCALL_TABLE=1
make_no_libpfm4 := NO_LIBPFM4=1
make_with_gtk2 := GTK2=1
make_refcnt_check := EXTRA_CFLAGS="-DREFCNT_CHECKING=1"
@@ -122,10 +120,10 @@ make_static := LDFLAGS=-static NO_PERF_READ_VDSO32=1 NO_PERF_READ_VDSOX3
# all the NO_* variable combined
make_minimal := NO_LIBPERL=1 NO_LIBPYTHON=1 NO_GTK2=1
make_minimal += NO_DEMANGLE=1 NO_LIBELF=1 NO_LIBUNWIND=1 NO_BACKTRACE=1
-make_minimal += NO_LIBNUMA=1 NO_LIBAUDIT=1 NO_LIBBIONIC=1
+make_minimal += NO_LIBNUMA=1 NO_LIBBIONIC=1
make_minimal += NO_LIBDW_DWARF_UNWIND=1 NO_AUXTRACE=1 NO_LIBBPF=1
make_minimal += NO_LIBCRYPTO=1 NO_SDT=1 NO_JVMTI=1 NO_LIBZSTD=1
-make_minimal += NO_LIBCAP=1 NO_SYSCALL_TABLE=1 NO_CAPSTONE=1
+make_minimal += NO_LIBCAP=1 NO_CAPSTONE=1
# $(run) contains all available tests
run := make_pure
@@ -158,7 +156,6 @@ run += make_no_libdw_dwarf_unwind
run += make_no_backtrace
run += make_no_libcapstone
run += make_no_libnuma
-run += make_no_libaudit
run += make_no_libbionic
run += make_no_auxtrace
run += make_no_libbpf
diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c
index 1edbccfc3281..4d915adc7239 100644
--- a/tools/perf/util/env.c
+++ b/tools/perf/util/env.c
@@ -471,13 +471,13 @@ const char *perf_env__arch(struct perf_env *env)
const char *perf_env__arch_strerrno(struct perf_env *env __maybe_unused, int err __maybe_unused)
{
-#if defined(HAVE_SYSCALL_TABLE_SUPPORT) && defined(HAVE_LIBTRACEEVENT)
+#if defined(HAVE_LIBTRACEEVENT)
if (env->arch_strerrno == NULL)
env->arch_strerrno = arch_syscalls__strerrno_function(perf_env__arch(env));
return env->arch_strerrno ? env->arch_strerrno(err) : "no arch specific strerrno function";
#else
- return "!(HAVE_SYSCALL_TABLE_SUPPORT && HAVE_LIBTRACEEVENT)";
+ return "!HAVE_LIBTRACEEVENT";
#endif
}
diff --git a/tools/perf/util/generate-cmdlist.sh b/tools/perf/util/generate-cmdlist.sh
index 1b5140e5ce99..6a73c903d690 100755
--- a/tools/perf/util/generate-cmdlist.sh
+++ b/tools/perf/util/generate-cmdlist.sh
@@ -38,7 +38,7 @@ do
done
echo "#endif /* HAVE_LIBELF_SUPPORT */"
-echo "#if defined(HAVE_LIBTRACEEVENT) && (defined(HAVE_LIBAUDIT_SUPPORT) || defined(HAVE_SYSCALL_TABLE_SUPPORT))"
+echo "#if defined(HAVE_LIBTRACEEVENT)"
sed -n -e 's/^perf-\([^ ]*\)[ ].* audit*/\1/p' command-list.txt |
sort |
while read cmd
@@ -51,7 +51,7 @@ do
p
}' "Documentation/perf-$cmd.txt"
done
-echo "#endif /* HAVE_LIBTRACEEVENT && (HAVE_LIBAUDIT_SUPPORT || HAVE_SYSCALL_TABLE_SUPPORT) */"
+echo "#endif /* HAVE_LIBTRACEEVENT */"
echo "#ifdef HAVE_LIBTRACEEVENT"
sed -n -e 's/^perf-\([^ ]*\)[ ].* traceevent.*/\1/p' command-list.txt |
diff --git a/tools/perf/util/syscalltbl.c b/tools/perf/util/syscalltbl.c
index 9341f0d442fe..7e24e4164da9 100644
--- a/tools/perf/util/syscalltbl.c
+++ b/tools/perf/util/syscalltbl.c
@@ -9,20 +9,12 @@
#include <stdlib.h>
#include <linux/compiler.h>
#include <linux/zalloc.h>
-#ifdef HAVE_SYSCALL_TABLE_SUPPORT
#include <string.h>
#include "string2.h"
-#if defined(GENERIC_SYSCALL_TABLE)
#include <syscall_table.h>
const int syscalltbl_native_max_id = SYSCALLTBL_MAX_ID;
static const char *const *syscalltbl_native = syscalltbl;
-#else
-const int syscalltbl_native_max_id = 0;
-static const char *const syscalltbl_native[] = {
- [0] = "unknown",
-};
-#endif
struct syscall {
int id;
@@ -130,47 +122,3 @@ int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_g
*idx = -1;
return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
}
-
-#else /* HAVE_SYSCALL_TABLE_SUPPORT */
-
-#include <libaudit.h>
-
-struct syscalltbl *syscalltbl__new(void)
-{
- struct syscalltbl *tbl = zalloc(sizeof(*tbl));
- if (tbl)
- tbl->audit_machine = audit_detect_machine();
- return tbl;
-}
-
-void syscalltbl__delete(struct syscalltbl *tbl)
-{
- free(tbl);
-}
-
-const char *syscalltbl__name(const struct syscalltbl *tbl, int id)
-{
- return audit_syscall_to_name(id, tbl->audit_machine);
-}
-
-int syscalltbl__id(struct syscalltbl *tbl, const char *name)
-{
- return audit_name_to_syscall(name, tbl->audit_machine);
-}
-
-int syscalltbl__id_at_idx(struct syscalltbl *tbl __maybe_unused, int idx)
-{
- return idx;
-}
-
-int syscalltbl__strglobmatch_next(struct syscalltbl *tbl __maybe_unused,
- const char *syscall_glob __maybe_unused, int *idx __maybe_unused)
-{
- return -1;
-}
-
-int syscalltbl__strglobmatch_first(struct syscalltbl *tbl, const char *syscall_glob, int *idx)
-{
- return syscalltbl__strglobmatch_next(tbl, syscall_glob, idx);
-}
-#endif /* HAVE_SYSCALL_TABLE_SUPPORT */
--
2.34.1
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