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Commit 73faab3a authored by Namhyung Kim's avatar Namhyung Kim Committed by Arnaldo Carvalho de Melo
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perf trace: Beautify fifth argument of mmap() as fd 



The fifth argument of mmap syscall is fd and it often contains -1 as a
value for anon mappings.  Without this patch it doesn't show the file
name as well as it shows -1 as 4294967295.

Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Acked-by: default avatarDavid Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1384237500-22991-1-git-send-email-namhyung@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 67c1e4a5

tools/perf/builtin-trace.c

+2 −1
Original line number Diff line number Diff line
@@ -951,7 +951,8 @@ static struct syscall_fmt { 
	{ .name	    = "mmap",	    .hexret = true,

	  .arg_scnprintf = { [0] = SCA_HEX,	  /* addr */

			     [2] = SCA_MMAP_PROT, /* prot */

			     [3] = SCA_MMAP_FLAGS, /* flags */ }, },

			     [3] = SCA_MMAP_FLAGS, /* flags */

			     [4] = SCA_FD, 	  /* fd */ }, },

	{ .name	    = "mprotect",   .errmsg = true,

	  .arg_scnprintf = { [0] = SCA_HEX, /* start */

			     [2] = SCA_MMAP_PROT, /* prot */ }, },