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Commit fa592fc0 authored by Adrian Hunter's avatar Adrian Hunter Committed by Greg Kroah-Hartman
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perf auxtrace: Define auxtrace record alignment 



commit c3fcadf0bb765faf45d6d562246e1d08885466df upstream.

Define auxtrace record alignment so that it can be referenced elsewhere.

Note this is preparation for patch "perf intel-pt: Fix overlap calculation
for padding"

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20190206103947.15750-2-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d8f691f2

tools/perf/util/auxtrace.c

+2 −2
Original line number Diff line number Diff line
@@ -1273,9 +1273,9 @@ static int __auxtrace_mmap__read(struct auxtrace_mmap *mm, 
	}



	/* padding must be written by fn() e.g. record__process_auxtrace() */

	padding = size & 7;

	padding = size & (PERF_AUXTRACE_RECORD_ALIGNMENT - 1);

	if (padding)

		padding = 8 - padding;

		padding = PERF_AUXTRACE_RECORD_ALIGNMENT - padding;



	memset(&ev, 0, sizeof(ev));

	ev.auxtrace.header.type = PERF_RECORD_AUXTRACE;

tools/perf/util/auxtrace.h

+3 −0
Original line number Diff line number Diff line
@@ -38,6 +38,9 @@ struct record_opts; 
struct auxtrace_info_event;

struct events_stats;



/* Auxtrace records must have the same alignment as perf event records */

#define PERF_AUXTRACE_RECORD_ALIGNMENT 8



enum auxtrace_type {

	PERF_AUXTRACE_UNKNOWN,

	PERF_AUXTRACE_INTEL_PT,