mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-24 09:50:04 +00:00
3dfc01fe9d
The datasym workload is to check if perf mem command gets the data addresses precisely. This is needed for data symbol test. $ perf test -w datasym I had to keep the buf1 in the data section, otherwise it could end up in the BSS and was mmaped as a separate //anon region, then it was not symbolized at all. It needs to be fixed separately. Committer notes: Add a -U _FORTIFY_SOURCE to the datasym 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/20221116233854.1596378-12-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
24 lines
418 B
C
24 lines
418 B
C
#include <linux/compiler.h>
|
|
#include "../tests.h"
|
|
|
|
typedef struct _buf {
|
|
char data1;
|
|
char reserved[55];
|
|
char data2;
|
|
} buf __attribute__((aligned(64)));
|
|
|
|
static buf buf1 = {
|
|
/* to have this in the data section */
|
|
.reserved[0] = 1,
|
|
};
|
|
|
|
static int datasym(int argc __maybe_unused, const char **argv __maybe_unused)
|
|
{
|
|
for (;;) {
|
|
buf1.data1++;
|
|
buf1.data2 += buf1.data1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_WORKLOAD(datasym);
|