Commit 6bd006c6 authored by Riccardo Mancini's avatar Riccardo Mancini Committed by Arnaldo Carvalho de Melo
Browse files

perf mmap: Introduce mmap_cpu_mask__duplicate() 



This patch adds a new function in util/mmap.c to duplicate a mmap_cpu_mask.

This new function will be used in patches in the workqueue patchkit.

Signed-off-by: default avatarRiccardo Mancini <rickyman7@gmail.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/8943a548ef7a3dd3e015095afad7e9a8b2154c05.1629490974.git.rickyman7@gmail.com


[ bitmap_alloc() was renamed to bitmap_zalloc() ]
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 73e40c9b

tools/perf/util/mmap.c

+11 −0
Original line number Diff line number Diff line
@@ -350,3 +350,14 @@ int perf_mmap__push(struct mmap *md, void *to, 
out:

	return rc;

}



int mmap_cpu_mask__duplicate(struct mmap_cpu_mask *original, struct mmap_cpu_mask *clone)

{

	clone->nbits = original->nbits;

	clone->bits  = bitmap_zalloc(original->nbits);

	if (!clone->bits)

		return -ENOMEM;



	memcpy(clone->bits, original->bits, MMAP_CPU_MASK_BYTES(original));

	return 0;

}

tools/perf/util/mmap.h

+3 −0
Original line number Diff line number Diff line
@@ -64,4 +64,7 @@ size_t mmap__mmap_len(struct mmap *map); 


void mmap_cpu_mask__scnprintf(struct mmap_cpu_mask *mask, const char *tag);



int mmap_cpu_mask__duplicate(struct mmap_cpu_mask *original,

				struct mmap_cpu_mask *clone);



#endif /*__PERF_MMAP_H */