Messages in this thread Patch in this message | | | From | Kenth Eriksson <> | Subject | [PATCH] Fix mmap error for perf data file. Not all file systems, e.g. JFFS2, support MAP_SHARED. | Date | Fri, 4 Sep 2015 09:00:45 +0200 |
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Signed-off-by: Kenth Eriksson <kenth.eriksson@transmode.com> --- tools/perf/util/session.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 0c74012..c6617fe 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1338,11 +1338,10 @@ static int __perf_session__process_events(struct perf_session *session, memset(mmaps, 0, sizeof(mmaps)); mmap_prot = PROT_READ; - mmap_flags = MAP_SHARED; + mmap_flags = MAP_PRIVATE; if (session->header.needs_swap) { mmap_prot |= PROT_WRITE; - mmap_flags = MAP_PRIVATE; } remap: buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd, -- 2.3.6
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