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perf intel-pt: Record Event Trace capability flag

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The change to the MODE.Exec packet means processing must distinguish
between the old and new cases. Record the Event Trace capability flag to
make that possible.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: https://lore.kernel.org/r/20220124084201.2699795-14-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2022-01-24 10:41:49 +02:00 committed by Arnaldo Carvalho de Melo
parent 8ee9a9ab81
commit f2be829e72
2 changed files with 16 additions and 1 deletions
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7
tools/perf/arch/x86/util/intel-pt.c
View File

@ -306,6 +306,7 @@ intel_pt_info_priv_size(struct auxtrace_record *itr, struct evlist *evlist)
ptr->priv_size = (INTEL_PT_AUXTRACE_PRIV_MAX * sizeof(u64)) +
intel_pt_filter_bytes(filter);
ptr->priv_size += sizeof(u64); /* Cap Event Trace */
return ptr->priv_size;
}
@ -335,6 +336,7 @@ static int intel_pt_info_fill(struct auxtrace_record *itr,
unsigned long max_non_turbo_ratio;
size_t filter_str_len;
const char *filter;
int event_trace;
__u64 *info;
int err;
@ -357,6 +359,9 @@ static int intel_pt_info_fill(struct auxtrace_record *itr,
if (perf_pmu__scan_file(intel_pt_pmu, "max_nonturbo_ratio",
"%lu", &max_non_turbo_ratio) != 1)
max_non_turbo_ratio = 0;
if (perf_pmu__scan_file(intel_pt_pmu, "caps/event_trace",
"%d", &event_trace) != 1)
event_trace = 0;
filter = intel_pt_find_filter(session->evlist, ptr->intel_pt_pmu);
filter_str_len = filter ? strlen(filter) : 0;
@ -407,6 +412,8 @@ static int intel_pt_info_fill(struct auxtrace_record *itr,
info += len >> 3;
}
*info++ = event_trace;
return 0;
}

10
tools/perf/util/intel-pt.c
View File

@ -75,6 +75,7 @@ struct intel_pt {
bool mispred_all;
bool use_thread_stack;
bool callstack;
bool cap_event_trace;
unsigned int br_stack_sz;
unsigned int br_stack_sz_plus;
int have_sched_switch;
@ -3795,7 +3796,7 @@ int intel_pt_process_auxtrace_info(union perf_event *event,
}
info = &auxtrace_info->priv[INTEL_PT_FILTER_STR_LEN] + 1;
info_end = (void *)info + auxtrace_info->header.size;
info_end = (void *)auxtrace_info + auxtrace_info->header.size;
if (intel_pt_has(auxtrace_info, INTEL_PT_FILTER_STR_LEN)) {
size_t len;
@ -3834,6 +3835,13 @@ int intel_pt_process_auxtrace_info(union perf_event *event,
intel_pt_print_info_str("Filter string", pt->filter);
}
if ((void *)info < info_end) {
pt->cap_event_trace = *info++;
if (dump_trace)
fprintf(stdout, " Cap Event Trace %d\n",
pt->cap_event_trace);
}
pt->timeless_decoding = intel_pt_timeless_decoding(pt);
if (pt->timeless_decoding && !pt->tc.time_mult)
pt->tc.time_mult = 1;