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perf intel-pt: Add a helper function for processing AUXTRACE_INFO 

Add a helper function 'intel_pt_has()' to make it easier to determine
which members the AUXTRACE_INFO event contains.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Link: http://lkml.kernel.org/r/1474641528-18776-13-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2016-09-23 17:38:44 +03:00 committed by Arnaldo Carvalho de Melo
parent 4d34e10a9f
commit 40b746a063
1 changed files with 8 additions and 4 deletions
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12
tools/perf/util/intel-pt.c
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@ -2037,6 +2037,12 @@ static void intel_pt_print_info(u64 *arr, int start, int finish)
fprintf(stdout, intel_pt_info_fmts[i], arr[i]);
}
static bool intel_pt_has(struct auxtrace_info_event *auxtrace_info, int pos)
{
return auxtrace_info->header.size >=
sizeof(struct auxtrace_info_event) + (sizeof(u64) * (pos + 1));
}
int intel_pt_process_auxtrace_info(union perf_event *event,
struct perf_session *session)
{
@ -2077,8 +2083,7 @@ int intel_pt_process_auxtrace_info(union perf_event *event,
intel_pt_print_info(&auxtrace_info->priv[0], INTEL_PT_PMU_TYPE,
INTEL_PT_PER_CPU_MMAPS);
if (auxtrace_info->header.size >= sizeof(struct auxtrace_info_event) +
(sizeof(u64) * INTEL_PT_CYC_BIT)) {
if (intel_pt_has(auxtrace_info, INTEL_PT_CYC_BIT)) {
pt->mtc_bit = auxtrace_info->priv[INTEL_PT_MTC_BIT];
pt->mtc_freq_bits = auxtrace_info->priv[INTEL_PT_MTC_FREQ_BITS];
pt->tsc_ctc_ratio_n = auxtrace_info->priv[INTEL_PT_TSC_CTC_N];
@ -2088,8 +2093,7 @@ int intel_pt_process_auxtrace_info(union perf_event *event,
INTEL_PT_CYC_BIT);
}
if (auxtrace_info->header.size >= sizeof(struct auxtrace_info_event) +
(sizeof(u64) * INTEL_PT_MAX_NONTURBO_RATIO)) {
if (intel_pt_has(auxtrace_info, INTEL_PT_MAX_NONTURBO_RATIO)) {
pt->max_non_turbo_ratio =
auxtrace_info->priv[INTEL_PT_MAX_NONTURBO_RATIO];
intel_pt_print_info(&auxtrace_info->priv[0],