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perf tools: Add build_id__is_defined function 

Adding build_id__is_defined helper to check build id is defined and is
!= zero build id.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20201126170026.2619053-8-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2020-11-26 18:00:08 +01:00 committed by Arnaldo Carvalho de Melo
parent b3e453272d
commit f45edd86b2
2 changed files with 7 additions and 0 deletions
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6
tools/perf/util/build-id.c
View File

@ -37,6 +37,7 @@
#include <linux/ctype.h>
#include <linux/zalloc.h>
#include <linux/string.h>
#include <asm/bug.h>
static bool no_buildid_cache;
@ -912,3 +913,8 @@ void build_id__init(struct build_id *bid, const u8 *data, size_t size)
memcpy(bid->data, data, size);
bid->size = size;
}
bool build_id__is_defined(const struct build_id *bid)
{
return bid && bid->size ? !!memchr_inv(bid->data, 0, bid->size) : false;
}

1
tools/perf/util/build-id.h
View File

@ -21,6 +21,7 @@ struct feat_fd;
void build_id__init(struct build_id *bid, const u8 *data, size_t size);
int build_id__sprintf(const struct build_id *build_id, char *bf);
bool build_id__is_defined(const struct build_id *bid);
int sysfs__sprintf_build_id(const char *root_dir, char *sbuild_id);
int filename__sprintf_build_id(const char *pathname, char *sbuild_id);
char *build_id_cache__kallsyms_path(const char *sbuild_id, char *bf,