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perf tools: Allow auxtrace data alignment

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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: Adrian 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: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2015-05-29 16:33:38 +03:00 committed by Arnaldo Carvalho de Melo
parent 38e89d2b17
commit 83b2ea257e
2 changed files with 8 additions and 0 deletions
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7
tools/perf/util/auxtrace.c
View File

@ -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)

1
tools/perf/util/auxtrace.h
View File

@ -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