mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 09:50:04 +00:00
perf test: Add 'brstack' test workload
The brstack is to run different kinds of branches repeatedly. This is necessary for brstack test case to verify if it has correct branch info. $ perf test -w brstack I renamed the internal functions to have brstack_ prefix as it's too generic name. Add a -U_FORTIFY_SOURCE to the brstack CFLAGS, as the main perf flags set it and it requires building with optimization, and this new test has a -O0. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Athira Jajeev <atrajeev@linux.vnet.ibm.com> Cc: German Gomez <german.gomez@arm.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com> Link: https://lore.kernel.org/r/20221116233854.1596378-10-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
parent
e011979ec4
commit
a104f0ea99
4 changed files with 44 additions and 0 deletions
|
@ -123,6 +123,7 @@ static struct test_workload *workloads[] = {
|
|||
&workload__thloop,
|
||||
&workload__leafloop,
|
||||
&workload__sqrtloop,
|
||||
&workload__brstack,
|
||||
};
|
||||
|
||||
static int num_subtests(const struct test_suite *t)
|
||||
|
|
|
@ -204,5 +204,6 @@ DECLARE_WORKLOAD(noploop);
|
|||
DECLARE_WORKLOAD(thloop);
|
||||
DECLARE_WORKLOAD(leafloop);
|
||||
DECLARE_WORKLOAD(sqrtloop);
|
||||
DECLARE_WORKLOAD(brstack);
|
||||
|
||||
#endif /* TESTS_H */
|
||||
|
|
|
@ -4,6 +4,8 @@ perf-y += noploop.o
|
|||
perf-y += thloop.o
|
||||
perf-y += leafloop.o
|
||||
perf-y += sqrtloop.o
|
||||
perf-y += brstack.o
|
||||
|
||||
CFLAGS_sqrtloop.o = -g -O0 -fno-inline -U_FORTIFY_SOURCE
|
||||
CFLAGS_leafloop.o = -g -O0 -fno-inline -fno-omit-frame-pointer -U_FORTIFY_SOURCE
|
||||
CFLAGS_brstack.o = -g -O0 -fno-inline -U_FORTIFY_SOURCE
|
||||
|
|
40
tools/perf/tests/workloads/brstack.c
Normal file
40
tools/perf/tests/workloads/brstack.c
Normal file
|
@ -0,0 +1,40 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
#include <stdlib.h>
|
||||
#include "../tests.h"
|
||||
|
||||
#define BENCH_RUNS 999999
|
||||
|
||||
static volatile int cnt;
|
||||
|
||||
static void brstack_bar(void) {
|
||||
} /* return */
|
||||
|
||||
static void brstack_foo(void) {
|
||||
brstack_bar(); /* call */
|
||||
} /* return */
|
||||
|
||||
static void brstack_bench(void) {
|
||||
void (*brstack_foo_ind)(void) = brstack_foo;
|
||||
|
||||
if ((cnt++) % 3) /* branch (cond) */
|
||||
brstack_foo(); /* call */
|
||||
brstack_bar(); /* call */
|
||||
brstack_foo_ind(); /* call (ind) */
|
||||
}
|
||||
|
||||
static int brstack(int argc, const char **argv)
|
||||
{
|
||||
int num_loops = BENCH_RUNS;
|
||||
|
||||
if (argc > 0)
|
||||
num_loops = atoi(argv[0]);
|
||||
|
||||
while (1) {
|
||||
if ((cnt++) > num_loops)
|
||||
break;
|
||||
brstack_bench();/* call */
|
||||
} /* branch (uncond) */
|
||||
return 0;
|
||||
}
|
||||
|
||||
DEFINE_WORKLOAD(brstack);
|
Loading…
Reference in a new issue