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Subject[PATCH v2 3/7] perf arm-spe: Dump TSC parameters
Date
The TSC parameters are stored in auxtrace info, this patch dumps these
parameters for reporting the raw data.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
tools/perf/util/arm-spe.c | 42 ++++++++++++++++++++++++++++++++++-----
1 file changed, 37 insertions(+), 5 deletions(-)

diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c
index 2539d4baec44..69ce3483d1af 100644
--- a/tools/perf/util/arm-spe.c
+++ b/tools/perf/util/arm-spe.c
@@ -26,6 +26,7 @@
#include "symbol.h"
#include "thread.h"
#include "thread-stack.h"
+#include "tsc.h"
#include "tool.h"
#include "util/synthetic-events.h"

@@ -45,6 +46,8 @@ struct arm_spe {
struct machine *machine;
u32 pmu_type;

+ struct perf_tsc_conversion tc;
+
u8 timeless_decoding;
u8 data_queued;

@@ -803,14 +806,23 @@ static bool arm_spe_evsel_is_auxtrace(struct perf_session *session,

static const char * const arm_spe_info_fmts[] = {
[ARM_SPE_PMU_TYPE] = " PMU Type %"PRId64"\n",
+ [ARM_SPE_TIME_SHIFT] = " Time Shift %"PRIu64"\n",
+ [ARM_SPE_TIME_MULT] = " Time Muliplier %"PRIu64"\n",
+ [ARM_SPE_TIME_ZERO] = " Time Zero %"PRIu64"\n",
+ [ARM_SPE_TIME_CYCLES] = " Time Cycles %"PRIu64"\n",
+ [ARM_SPE_TIME_MASK] = " Time Mask %#"PRIx64"\n",
+ [ARM_SPE_CAP_USER_TIME_SHORT] = " Cap Time Short %"PRId64"\n",
};

-static void arm_spe_print_info(__u64 *arr)
+static void arm_spe_print_info(__u64 *arr, int start, int finish)
{
+ int i;
+
if (!dump_trace)
return;

- fprintf(stdout, arm_spe_info_fmts[ARM_SPE_PMU_TYPE], arr[ARM_SPE_PMU_TYPE]);
+ for (i = start; i <= finish; i++)
+ fprintf(stdout, arm_spe_info_fmts[i], arr[i]);
}

struct arm_spe_synth {
@@ -1001,11 +1013,19 @@ arm_spe_synth_events(struct arm_spe *spe, struct perf_session *session)
return 0;
}

+static bool arm_spe_has(struct perf_record_auxtrace_info *auxtrace_info,
+ int pos)
+{
+ return auxtrace_info->header.size >=
+ (sizeof(struct perf_record_auxtrace_info) +
+ (sizeof(u64) * (pos + 1)));
+}
+
int arm_spe_process_auxtrace_info(union perf_event *event,
struct perf_session *session)
{
struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info;
- size_t min_sz = sizeof(u64) * ARM_SPE_AUXTRACE_PRIV_MAX;
+ size_t min_sz = sizeof(u64) * ARM_SPE_TIME_SHIFT;
struct arm_spe *spe;
int err;

@@ -1025,6 +1045,20 @@ int arm_spe_process_auxtrace_info(union perf_event *event,
spe->machine = &session->machines.host; /* No kvm support */
spe->auxtrace_type = auxtrace_info->type;
spe->pmu_type = auxtrace_info->priv[ARM_SPE_PMU_TYPE];
+ arm_spe_print_info(&auxtrace_info->priv[0], ARM_SPE_PMU_TYPE,
+ ARM_SPE_PMU_TYPE);
+
+ if (arm_spe_has(auxtrace_info, ARM_SPE_CAP_USER_TIME_SHORT)) {
+ spe->tc.time_shift = auxtrace_info->priv[ARM_SPE_TIME_SHIFT];
+ spe->tc.time_mult = auxtrace_info->priv[ARM_SPE_TIME_MULT];
+ spe->tc.time_zero = auxtrace_info->priv[ARM_SPE_TIME_ZERO];
+ spe->tc.time_cycles = auxtrace_info->priv[ARM_SPE_TIME_CYCLES];
+ spe->tc.time_mask = auxtrace_info->priv[ARM_SPE_TIME_MASK];
+ spe->tc.cap_user_time_short =
+ auxtrace_info->priv[ARM_SPE_CAP_USER_TIME_SHORT];
+ arm_spe_print_info(&auxtrace_info->priv[0], ARM_SPE_TIME_SHIFT,
+ ARM_SPE_CAP_USER_TIME_SHORT);
+ }

spe->timeless_decoding = arm_spe__is_timeless_decoding(spe);
spe->auxtrace.process_event = arm_spe_process_event;
@@ -1035,8 +1069,6 @@ int arm_spe_process_auxtrace_info(union perf_event *event,
spe->auxtrace.evsel_is_auxtrace = arm_spe_evsel_is_auxtrace;
session->auxtrace = &spe->auxtrace;

- arm_spe_print_info(&auxtrace_info->priv[0]);
-
if (dump_trace)
return 0;

--
2.25.1
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