From e6b6f6795265ec19ff35572f527bb74c07ff9399 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 26 Sep 2012 13:13:04 -0300 Subject: [PATCH] perf evsel: Handle endianity in intval method 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 Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-8tjuxk09mlsfmh7macgkxsip@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/evsel.c | 38 ++++++++++++++++++++++++++++++++++---- 1 file changed, 34 insertions(+), 4 deletions(-) diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index fe9581b0323c..c78e42ab9770 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -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; } -- GitLab