diff options
| author | Ian Rogers <irogers@google.com> | 2023-03-11 07:57:45 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-03-14 12:29:46 +0100 |
| commit | 0cd3142f6b238981ed4855217cfa4ee0aa899181 (patch) | |
| tree | 105076a2c7ed3414f0528032388fe5d30bccf401 /tools | |
| parent | perf build: Remove unused HAVE_GLIBC_SUPPORT (diff) | |
| download | linux-0cd3142f6b238981ed4855217cfa4ee0aa899181.tar.xz linux-0cd3142f6b238981ed4855217cfa4ee0aa899181.zip | |
perf util: Remove weak sched_getcpu
sched_getcpu may not be present and so a feature test and definition
exist to workaround this in the build. The feature test is used to
define HAVE_SCHED_GETCPU_SUPPORT and so this is sufficient to know
whether the local sched_getcpu is needed and a weak symbol can be
avoided.
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andres Freund <andres@anarazel.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin Liška <mliska@suse.cz>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Pavithra Gurushankar <gpavithrasha@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Monnet <quentin@isovalent.com>
Cc: Roberto Sassu <roberto.sassu@huawei.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tiezhu Yang <yangtiezhu@loongson.cn>
Cc: Tom Rix <trix@redhat.com>
Cc: Yang Jihong <yangjihong1@huawei.com>
Cc: llvm@lists.linux.dev
Link: https://lore.kernel.org/r/20230311065753.3012826-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/cloexec.c | 13 | ||||
| -rw-r--r-- | tools/perf/util/util.c | 16 |
2 files changed, 16 insertions, 13 deletions
diff --git a/tools/perf/util/cloexec.c b/tools/perf/util/cloexec.c index fa8248aadb59..8830604c3a8d 100644 --- a/tools/perf/util/cloexec.c +++ b/tools/perf/util/cloexec.c @@ -13,19 +13,6 @@ static unsigned long flag = PERF_FLAG_FD_CLOEXEC; -int __weak sched_getcpu(void) -{ -#ifdef __NR_getcpu - unsigned cpu; - int err = syscall(__NR_getcpu, &cpu, NULL, NULL); - if (!err) - return cpu; -#else - errno = ENOSYS; -#endif - return -1; -} - static int perf_flag_probe(void) { /* use 'safest' configuration as used in evsel__fallback() */ diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index 391c1e928bd7..b356c9f7f0c3 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -533,3 +533,19 @@ int do_realloc_array_as_needed(void **arr, size_t *arr_sz, size_t x, size_t msz, *arr_sz = new_sz; return 0; } + +#ifndef HAVE_SCHED_GETCPU_SUPPORT +int sched_getcpu(void) +{ +#ifdef __NR_getcpu + unsigned int cpu; + int err = syscall(__NR_getcpu, &cpu, NULL, NULL); + + if (!err) + return cpu; +#else + errno = ENOSYS; +#endif + return -1; +} +#endif |