perf bench syscall: Add fork syscall benchmark
authorTiezhu Yang <yangtiezhu@loongson.cn>
Tue, 21 Mar 2023 06:57:01 +0000 (14:57 +0800)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Tue, 4 Apr 2023 12:39:55 +0000 (09:39 -0300)
commitece7f7c0507cc147f72e117e22732091db758885
treedba408a55d719e4ff50d10635cf34ca75569aa60
parent51ea4cb96f35ae2f31d45d9a0dbf30da13bbe441
perf bench syscall: Add fork syscall benchmark

This is a follow up patch for the execve bench which is actually
fork + execve, it makes sense to add the fork syscall benchmark
to compare the execve part precisely.

Some archs have no __NR_fork definition which is used only as a
check condition to call test_fork(), let us just define it as -1
to avoid build error.

Suggested-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: loongson-kernel@lists.loongnix.cn
Link: https://lore.kernel.org/r/1679381821-22736-1-git-send-email-yangtiezhu@loongson.cn
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/arch/x86/include/uapi/asm/unistd_32.h
tools/arch/x86/include/uapi/asm/unistd_64.h
tools/perf/bench/bench.h
tools/perf/bench/syscall.c
tools/perf/builtin-bench.c