Commit 058f1511 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
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perf data: Add is_perf_data function 



Adding is_perf_data function that returns true if the given path is perf
data file. It will be used in following patches.

Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Acked-by: default avatarIan Rogers <irogers@google.com>
Acked-by: default avatarNamhyung 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: 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/20201126170026.2619053-21-jolsa@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent ca8ea73a

tools/perf/util/data.c

+19 −0
Original line number Diff line number Diff line
@@ -492,3 +492,22 @@ char *perf_data__kallsyms_name(struct perf_data *data) 


	return kallsyms_name;

}



bool is_perf_data(const char *path)

{

	bool ret = false;

	FILE *file;

	u64 magic;



	file = fopen(path, "r");

	if (!file)

		return false;



	if (fread(&magic, 1, 8, file) < 8)

		goto out;



	ret = is_perf_magic(magic);

out:

	fclose(file);

	return ret;

}

tools/perf/util/data.h

+1 −0
Original line number Diff line number Diff line
@@ -98,4 +98,5 @@ int perf_data__update_dir(struct perf_data *data); 
unsigned long perf_data__size(struct perf_data *data);

int perf_data__make_kcore_dir(struct perf_data *data, char *buf, size_t buf_sz);

char *perf_data__kallsyms_name(struct perf_data *data);

bool is_perf_data(const char *path);

#endif /* __PERF_DATA_H */