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perf evsel: Handle endianity in intval method

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We were relying on the info in pevent, but since we have it in
perf_evsel, set up by the perf_session routine if read from a perf.data
file or by whoever creates the evsels, use it.

New 'perf test' entries will use it to parse locally generated events,
in a non perf.data centered workflow.

As well as use byteswap.h to get per arch optimized swap routines, like
other parts of perf (header, perf_evsel__parse_sample, symbol, etc)
already do.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-8tjuxk09mlsfmh7macgkxsip@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2012-09-26 13:13:04 -03:00
parent 0807d2d8a3
commit e6b6f67952
1 changed files with 34 additions and 4 deletions
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38
tools/perf/util/evsel.c
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@ -1108,13 +1108,43 @@ u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample,
const char *name)
{
struct format_field *field = perf_evsel__field(evsel, name);
u64 val;
void *ptr;
u64 value;
if (!field)
return 0;
val = pevent_read_number(evsel->tp_format->pevent,
sample->raw_data + field->offset, field->size);
return val;
ptr = sample->raw_data + field->offset;
switch (field->size) {
case 1:
return *(u8 *)ptr;
case 2:
value = *(u16 *)ptr;
break;
case 4:
value = *(u32 *)ptr;
break;
case 8:
value = *(u64 *)ptr;
break;
default:
return 0;
}
if (!evsel->needs_swap)
return value;
switch (field->size) {
case 2:
return bswap_16(value);
case 4:
return bswap_32(value);
case 8:
return bswap_64(value);
default:
return 0;
}
return 0;
}