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Commit 83b2ea25 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf tools: Allow auxtrace data alignment 



Allow auxtrace data to be a multiple of something other than page size.
That is needed for BTS where the buffer contains 24-byte records.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1432906425-9911-11-git-send-email-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 38e89d2b

tools/perf/util/auxtrace.c

+7 −0
Original line number Diff line number Diff line
@@ -1182,6 +1182,13 @@ static int __auxtrace_mmap__read(struct auxtrace_mmap *mm, 
		data2 = NULL;

	}



	if (itr->alignment) {

		unsigned int unwanted = len1 % itr->alignment;



		len1 -= unwanted;

		size -= unwanted;

	}



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

	padding = size & 7;

	if (padding)

tools/perf/util/auxtrace.h

+1 −0
Original line number Diff line number Diff line
@@ -303,6 +303,7 @@ struct auxtrace_record { 
				      const char *str);

	u64 (*reference)(struct auxtrace_record *itr);

	int (*read_finish)(struct auxtrace_record *itr, int idx);

	unsigned int alignment;

};



#ifdef HAVE_AUXTRACE_SUPPORT