* [PATCH v1] perf record: encode -k clockid frequency into Perf trace
@ 2018-09-27 12:54 Alexey Budankov
2018-09-27 16:02 ` Jiri Olsa
0 siblings, 1 reply; 3+ messages in thread
From: Alexey Budankov @ 2018-09-27 12:54 UTC (permalink / raw)
To: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo
Cc: Alexander Shishkin, Jiri Olsa, Namhyung Kim, Andi Kleen, linux-kernel
Store -k clockid frequency into Perf trace to enable timestamps
derived metrics conversion into wall clock time on reporting stage.
Below is the example of perf report output:
tools/perf/perf record -k raw -- ../../matrix/linux/matrix.gcc
...
[ perf record: Captured and wrote 31.222 MB perf.data (818054 samples) ]
tools/perf/perf report --header
# ========
...
# event : name = cycles:ppp, , size = 112, { sample_period, sample_freq } = 4000, sample_type = IP|TID|TIME|PERIOD, disabled = 1, inherit = 1, mmap = 1, comm = 1, freq = 1, enable_on_exec = 1, task = 1, precise_ip = 3, sample_id_all = 1, exclude_guest = 1, mmap2 = 1, comm_exec = 1, use_clockid = 1, clockid = 4
...
# clockid frequency: 1000 MHz
...
# ========
Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
---
tools/perf/builtin-record.c | 26 ++++++++++++++++++++++++--
tools/perf/perf.h | 1 +
tools/perf/util/env.h | 1 +
| 32 ++++++++++++++++++++++++++++++++
| 1 +
5 files changed, 59 insertions(+), 2 deletions(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 0980dfe3396b..f215daf28508 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -592,6 +592,11 @@ static void record__init_features(struct record *rec)
if (!rec->opts.full_auxtrace)
perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
+ if (rec->opts.use_clockid && rec->opts.clockid_freq)
+ session->header.env.clockid_freq = rec->opts.clockid_freq;
+ else
+ perf_header__clear_feat(&session->header, HEADER_CLOCKID);
+
perf_header__clear_feat(&session->header, HEADER_STAT);
}
@@ -1337,6 +1342,22 @@ static const struct clockid_map clockids[] = {
CLOCKID_END,
};
+#define NSEC_IN_SEC (1000 * 1000 * 1000)
+
+static int get_clockid_freq(clockid_t clk_id, size_t *freq)
+{
+ size_t period_ns;
+ struct timespec res;
+
+ *freq = 0;
+ if (!clock_getres(clk_id, &res)) {
+ period_ns = res.tv_nsec + res.tv_sec * NSEC_IN_SEC;
+ *freq = period_ns * 1000; /* MHz */
+ }
+
+ return 0;
+}
+
static int parse_clockid(const struct option *opt, const char *str, int unset)
{
struct record_opts *opts = (struct record_opts *)opt->value;
@@ -1360,7 +1381,7 @@ static int parse_clockid(const struct option *opt, const char *str, int unset)
/* if its a number, we're done */
if (sscanf(str, "%d", &opts->clockid) == 1)
- return 0;
+ return get_clockid_freq(opts->clockid, &opts->clockid_freq);
/* allow a "CLOCK_" prefix to the name */
if (!strncasecmp(str, "CLOCK_", 6))
@@ -1369,7 +1390,8 @@ static int parse_clockid(const struct option *opt, const char *str, int unset)
for (cm = clockids; cm->name; cm++) {
if (!strcasecmp(str, cm->name)) {
opts->clockid = cm->clockid;
- return 0;
+ return get_clockid_freq(opts->clockid,
+ &opts->clockid_freq);
}
}
diff --git a/tools/perf/perf.h b/tools/perf/perf.h
index 21bf7f5a3cf5..7f612f296b64 100644
--- a/tools/perf/perf.h
+++ b/tools/perf/perf.h
@@ -81,6 +81,7 @@ struct record_opts {
unsigned initial_delay;
bool use_clockid;
clockid_t clockid;
+ size_t clockid_freq;
unsigned int proc_map_timeout;
};
diff --git a/tools/perf/util/env.h b/tools/perf/util/env.h
index 1f3ccc368530..ffb358f1ff1e 100644
--- a/tools/perf/util/env.h
+++ b/tools/perf/util/env.h
@@ -63,6 +63,7 @@ struct perf_env {
struct numa_node *numa_nodes;
struct memory_node *memory_nodes;
unsigned long long memory_bsize;
+ size_t clockid_freq;
};
extern struct perf_env perf_env;
--git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 1ec1d9bc2d63..a37c40478b64 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1034,6 +1034,19 @@ static int write_auxtrace(struct feat_fd *ff,
return err;
}
+static int write_clockid(struct feat_fd *ff,
+ struct perf_evlist *evlist __maybe_unused)
+{
+ int ret;
+
+ ret = do_write(ff, &ff->ph->env.clockid_freq,
+ sizeof(ff->ph->env.clockid_freq));
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
static int cpu_cache_level__sort(const void *a, const void *b)
{
struct cpu_cache_level *cache_a = (struct cpu_cache_level *)a;
@@ -1508,6 +1521,11 @@ static void print_cpu_topology(struct feat_fd *ff, FILE *fp)
fprintf(fp, "# Core ID and Socket ID information is not available\n");
}
+static void print_clockid(struct feat_fd *ff, FILE *fp)
+{
+ fprintf(fp, "# clockid frequency: %ld MHz\n", ff->ph->env.clockid_freq);
+}
+
static void free_event_desc(struct perf_evsel *events)
{
struct perf_evsel *evsel;
@@ -2531,6 +2549,19 @@ static int process_mem_topology(struct feat_fd *ff,
return ret;
}
+static int process_clockid(struct feat_fd *ff,
+ void *data __maybe_unused)
+{
+ size_t clockid_freq;
+
+ if (do_read_u64(ff, &clockid_freq))
+ return -1;
+
+ ff->ph->env.clockid_freq = clockid_freq;
+
+ return 0;
+}
+
struct feature_ops {
int (*write)(struct feat_fd *ff, struct perf_evlist *evlist);
void (*print)(struct feat_fd *ff, FILE *fp);
@@ -2590,6 +2621,7 @@ static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = {
FEAT_OPN(CACHE, cache, true),
FEAT_OPR(SAMPLE_TIME, sample_time, false),
FEAT_OPR(MEM_TOPOLOGY, mem_topology, true),
+ FEAT_OPR(CLOCKID, clockid, false)
};
struct header_print_data {
--git a/tools/perf/util/header.h b/tools/perf/util/header.h
index e17903caa71d..0d553ddca0a3 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -38,6 +38,7 @@ enum {
HEADER_CACHE,
HEADER_SAMPLE_TIME,
HEADER_MEM_TOPOLOGY,
+ HEADER_CLOCKID,
HEADER_LAST_FEATURE,
HEADER_FEAT_BITS = 256,
};
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v1] perf record: encode -k clockid frequency into Perf trace
2018-09-27 12:54 [PATCH v1] perf record: encode -k clockid frequency into Perf trace Alexey Budankov
@ 2018-09-27 16:02 ` Jiri Olsa
2018-09-28 6:38 ` Alexey Budankov
0 siblings, 1 reply; 3+ messages in thread
From: Jiri Olsa @ 2018-09-27 16:02 UTC (permalink / raw)
To: Alexey Budankov
Cc: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
Alexander Shishkin, Namhyung Kim, Andi Kleen, linux-kernel
On Thu, Sep 27, 2018 at 03:54:03PM +0300, Alexey Budankov wrote:
>
> Store -k clockid frequency into Perf trace to enable timestamps
> derived metrics conversion into wall clock time on reporting stage.
>
> Below is the example of perf report output:
>
> tools/perf/perf record -k raw -- ../../matrix/linux/matrix.gcc
> ...
> [ perf record: Captured and wrote 31.222 MB perf.data (818054 samples) ]
>
> tools/perf/perf report --header
> # ========
> ...
> # event : name = cycles:ppp, , size = 112, { sample_period, sample_freq } = 4000, sample_type = IP|TID|TIME|PERIOD, disabled = 1, inherit = 1, mmap = 1, comm = 1, freq = 1, enable_on_exec = 1, task = 1, precise_ip = 3, sample_id_all = 1, exclude_guest = 1, mmap2 = 1, comm_exec = 1, use_clockid = 1, clockid = 4
> ...
> # clockid frequency: 1000 MHz
> ...
> # ========
>
> Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
looks good, few nits below
thanks,
jirka
> ---
> tools/perf/builtin-record.c | 26 ++++++++++++++++++++++++--
> tools/perf/perf.h | 1 +
> tools/perf/util/env.h | 1 +
> tools/perf/util/header.c | 32 ++++++++++++++++++++++++++++++++
> tools/perf/util/header.h | 1 +
> 5 files changed, 59 insertions(+), 2 deletions(-)
>
> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
> index 0980dfe3396b..f215daf28508 100644
> --- a/tools/perf/builtin-record.c
> +++ b/tools/perf/builtin-record.c
> @@ -592,6 +592,11 @@ static void record__init_features(struct record *rec)
> if (!rec->opts.full_auxtrace)
> perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
>
> + if (rec->opts.use_clockid && rec->opts.clockid_freq)
> + session->header.env.clockid_freq = rec->opts.clockid_freq;
> + else
> + perf_header__clear_feat(&session->header, HEADER_CLOCKID);
> +
> perf_header__clear_feat(&session->header, HEADER_STAT);
> }
>
> @@ -1337,6 +1342,22 @@ static const struct clockid_map clockids[] = {
> CLOCKID_END,
> };
>
> +#define NSEC_IN_SEC (1000 * 1000 * 1000)
we have that one already:
../include/linux/time64.h:#define NSEC_PER_SEC 1000000000L
> +
> +static int get_clockid_freq(clockid_t clk_id, size_t *freq)
> +{
> + size_t period_ns;
> + struct timespec res;
> +
> + *freq = 0;
> + if (!clock_getres(clk_id, &res)) {
> + period_ns = res.tv_nsec + res.tv_sec * NSEC_IN_SEC;
> + *freq = period_ns * 1000; /* MHz */
let's multiply it when we display it no?
the field is called clockid_freq anyway...
> + }
> +
> + return 0;
> +}
> +
> static int parse_clockid(const struct option *opt, const char *str, int unset)
> {
> struct record_opts *opts = (struct record_opts *)opt->value;
> @@ -1360,7 +1381,7 @@ static int parse_clockid(const struct option *opt, const char *str, int unset)
>
> /* if its a number, we're done */
> if (sscanf(str, "%d", &opts->clockid) == 1)
> - return 0;
> + return get_clockid_freq(opts->clockid, &opts->clockid_freq);
>
> /* allow a "CLOCK_" prefix to the name */
> if (!strncasecmp(str, "CLOCK_", 6))
> @@ -1369,7 +1390,8 @@ static int parse_clockid(const struct option *opt, const char *str, int unset)
> for (cm = clockids; cm->name; cm++) {
> if (!strcasecmp(str, cm->name)) {
> opts->clockid = cm->clockid;
> - return 0;
> + return get_clockid_freq(opts->clockid,
> + &opts->clockid_freq);
> }
> }
>
> diff --git a/tools/perf/perf.h b/tools/perf/perf.h
> index 21bf7f5a3cf5..7f612f296b64 100644
> --- a/tools/perf/perf.h
> +++ b/tools/perf/perf.h
> @@ -81,6 +81,7 @@ struct record_opts {
> unsigned initial_delay;
> bool use_clockid;
> clockid_t clockid;
> + size_t clockid_freq;
> unsigned int proc_map_timeout;
> };
>
> diff --git a/tools/perf/util/env.h b/tools/perf/util/env.h
> index 1f3ccc368530..ffb358f1ff1e 100644
> --- a/tools/perf/util/env.h
> +++ b/tools/perf/util/env.h
> @@ -63,6 +63,7 @@ struct perf_env {
> struct numa_node *numa_nodes;
> struct memory_node *memory_nodes;
> unsigned long long memory_bsize;
> + size_t clockid_freq;
> };
>
> extern struct perf_env perf_env;
> diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
> index 1ec1d9bc2d63..a37c40478b64 100644
> --- a/tools/perf/util/header.c
> +++ b/tools/perf/util/header.c
> @@ -1034,6 +1034,19 @@ static int write_auxtrace(struct feat_fd *ff,
> return err;
> }
>
> +static int write_clockid(struct feat_fd *ff,
> + struct perf_evlist *evlist __maybe_unused)
> +{
> + int ret;
> +
> + ret = do_write(ff, &ff->ph->env.clockid_freq,
> + sizeof(ff->ph->env.clockid_freq));
> + if (ret < 0)
> + return ret;
> +
> + return 0;
can't you just do: "return do_write(..." in here?
> +}
> +
> static int cpu_cache_level__sort(const void *a, const void *b)
> {
> struct cpu_cache_level *cache_a = (struct cpu_cache_level *)a;
> @@ -1508,6 +1521,11 @@ static void print_cpu_topology(struct feat_fd *ff, FILE *fp)
> fprintf(fp, "# Core ID and Socket ID information is not available\n");
> }
>
> +static void print_clockid(struct feat_fd *ff, FILE *fp)
> +{
> + fprintf(fp, "# clockid frequency: %ld MHz\n", ff->ph->env.clockid_freq);
> +}
> +
> static void free_event_desc(struct perf_evsel *events)
> {
> struct perf_evsel *evsel;
> @@ -2531,6 +2549,19 @@ static int process_mem_topology(struct feat_fd *ff,
> return ret;
> }
>
> +static int process_clockid(struct feat_fd *ff,
> + void *data __maybe_unused)
> +{
> + size_t clockid_freq;
> +
> + if (do_read_u64(ff, &clockid_freq))
> + return -1;
> +
> + ff->ph->env.clockid_freq = clockid_freq;
> +
> + return 0;
> +}
> +
> struct feature_ops {
> int (*write)(struct feat_fd *ff, struct perf_evlist *evlist);
> void (*print)(struct feat_fd *ff, FILE *fp);
> @@ -2590,6 +2621,7 @@ static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = {
> FEAT_OPN(CACHE, cache, true),
> FEAT_OPR(SAMPLE_TIME, sample_time, false),
> FEAT_OPR(MEM_TOPOLOGY, mem_topology, true),
> + FEAT_OPR(CLOCKID, clockid, false)
> };
>
> struct header_print_data {
> diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
> index e17903caa71d..0d553ddca0a3 100644
> --- a/tools/perf/util/header.h
> +++ b/tools/perf/util/header.h
> @@ -38,6 +38,7 @@ enum {
> HEADER_CACHE,
> HEADER_SAMPLE_TIME,
> HEADER_MEM_TOPOLOGY,
> + HEADER_CLOCKID,
> HEADER_LAST_FEATURE,
> HEADER_FEAT_BITS = 256,
> };
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v1] perf record: encode -k clockid frequency into Perf trace
2018-09-27 16:02 ` Jiri Olsa
@ 2018-09-28 6:38 ` Alexey Budankov
0 siblings, 0 replies; 3+ messages in thread
From: Alexey Budankov @ 2018-09-28 6:38 UTC (permalink / raw)
To: Jiri Olsa
Cc: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
Alexander Shishkin, Namhyung Kim, Andi Kleen, linux-kernel
Hi,
On 27.09.2018 19:02, Jiri Olsa wrote:
> On Thu, Sep 27, 2018 at 03:54:03PM +0300, Alexey Budankov wrote:
>>
>> Store -k clockid frequency into Perf trace to enable timestamps
>> derived metrics conversion into wall clock time on reporting stage.
>>
>> Below is the example of perf report output:
>>
>> tools/perf/perf record -k raw -- ../../matrix/linux/matrix.gcc
>> ...
>> [ perf record: Captured and wrote 31.222 MB perf.data (818054 samples) ]
>>
>> tools/perf/perf report --header
>> # ========
>> ...
>> # event : name = cycles:ppp, , size = 112, { sample_period, sample_freq } = 4000, sample_type = IP|TID|TIME|PERIOD, disabled = 1, inherit = 1, mmap = 1, comm = 1, freq = 1, enable_on_exec = 1, task = 1, precise_ip = 3, sample_id_all = 1, exclude_guest = 1, mmap2 = 1, comm_exec = 1, use_clockid = 1, clockid = 4
>> ...
>> # clockid frequency: 1000 MHz
>> ...
>> # ========
>>
>> Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
>
> looks good, few nits below
Accepted. Please see v2.
Thanks,
Alexey
>
> thanks,
> jirka
>
>
>> ---
>> tools/perf/builtin-record.c | 26 ++++++++++++++++++++++++--
>> tools/perf/perf.h | 1 +
>> tools/perf/util/env.h | 1 +
>> tools/perf/util/header.c | 32 ++++++++++++++++++++++++++++++++
>> tools/perf/util/header.h | 1 +
>> 5 files changed, 59 insertions(+), 2 deletions(-)
>>
>> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
>> index 0980dfe3396b..f215daf28508 100644
>> --- a/tools/perf/builtin-record.c
>> +++ b/tools/perf/builtin-record.c
>> @@ -592,6 +592,11 @@ static void record__init_features(struct record *rec)
>> if (!rec->opts.full_auxtrace)
>> perf_header__clear_feat(&session->header, HEADER_AUXTRACE);
>>
>> + if (rec->opts.use_clockid && rec->opts.clockid_freq)
>> + session->header.env.clockid_freq = rec->opts.clockid_freq;
>> + else
>> + perf_header__clear_feat(&session->header, HEADER_CLOCKID);
>> +
>> perf_header__clear_feat(&session->header, HEADER_STAT);
>> }
>>
>> @@ -1337,6 +1342,22 @@ static const struct clockid_map clockids[] = {
>> CLOCKID_END,
>> };
>>
>> +#define NSEC_IN_SEC (1000 * 1000 * 1000)
>
> we have that one already:
>
> ../include/linux/time64.h:#define NSEC_PER_SEC 1000000000L
>
>> +
>> +static int get_clockid_freq(clockid_t clk_id, size_t *freq)
>> +{
>> + size_t period_ns;
>> + struct timespec res;
>> +
>> + *freq = 0;
>> + if (!clock_getres(clk_id, &res)) {
>> + period_ns = res.tv_nsec + res.tv_sec * NSEC_IN_SEC;
>> + *freq = period_ns * 1000; /* MHz */
>
> let's multiply it when we display it no?
> the field is called clockid_freq anyway...
>
>> + }
>> +
>> + return 0;
>> +}
>> +
>> static int parse_clockid(const struct option *opt, const char *str, int unset)
>> {
>> struct record_opts *opts = (struct record_opts *)opt->value;
>> @@ -1360,7 +1381,7 @@ static int parse_clockid(const struct option *opt, const char *str, int unset)
>>
>> /* if its a number, we're done */
>> if (sscanf(str, "%d", &opts->clockid) == 1)
>> - return 0;
>> + return get_clockid_freq(opts->clockid, &opts->clockid_freq);
>>
>> /* allow a "CLOCK_" prefix to the name */
>> if (!strncasecmp(str, "CLOCK_", 6))
>> @@ -1369,7 +1390,8 @@ static int parse_clockid(const struct option *opt, const char *str, int unset)
>> for (cm = clockids; cm->name; cm++) {
>> if (!strcasecmp(str, cm->name)) {
>> opts->clockid = cm->clockid;
>> - return 0;
>> + return get_clockid_freq(opts->clockid,
>> + &opts->clockid_freq);
>> }
>> }
>>
>> diff --git a/tools/perf/perf.h b/tools/perf/perf.h
>> index 21bf7f5a3cf5..7f612f296b64 100644
>> --- a/tools/perf/perf.h
>> +++ b/tools/perf/perf.h
>> @@ -81,6 +81,7 @@ struct record_opts {
>> unsigned initial_delay;
>> bool use_clockid;
>> clockid_t clockid;
>> + size_t clockid_freq;
>> unsigned int proc_map_timeout;
>> };
>>
>> diff --git a/tools/perf/util/env.h b/tools/perf/util/env.h
>> index 1f3ccc368530..ffb358f1ff1e 100644
>> --- a/tools/perf/util/env.h
>> +++ b/tools/perf/util/env.h
>> @@ -63,6 +63,7 @@ struct perf_env {
>> struct numa_node *numa_nodes;
>> struct memory_node *memory_nodes;
>> unsigned long long memory_bsize;
>> + size_t clockid_freq;
>> };
>>
>> extern struct perf_env perf_env;
>> diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
>> index 1ec1d9bc2d63..a37c40478b64 100644
>> --- a/tools/perf/util/header.c
>> +++ b/tools/perf/util/header.c
>> @@ -1034,6 +1034,19 @@ static int write_auxtrace(struct feat_fd *ff,
>> return err;
>> }
>>
>> +static int write_clockid(struct feat_fd *ff,
>> + struct perf_evlist *evlist __maybe_unused)
>> +{
>> + int ret;
>> +
>> + ret = do_write(ff, &ff->ph->env.clockid_freq,
>> + sizeof(ff->ph->env.clockid_freq));
>> + if (ret < 0)
>> + return ret;
>> +
>> + return 0;
>
> can't you just do: "return do_write(..." in here?
>
>> +}
>> +
>> static int cpu_cache_level__sort(const void *a, const void *b)
>> {
>> struct cpu_cache_level *cache_a = (struct cpu_cache_level *)a;
>> @@ -1508,6 +1521,11 @@ static void print_cpu_topology(struct feat_fd *ff, FILE *fp)
>> fprintf(fp, "# Core ID and Socket ID information is not available\n");
>> }
>>
>> +static void print_clockid(struct feat_fd *ff, FILE *fp)
>> +{
>> + fprintf(fp, "# clockid frequency: %ld MHz\n", ff->ph->env.clockid_freq);
>> +}
>> +
>> static void free_event_desc(struct perf_evsel *events)
>> {
>> struct perf_evsel *evsel;
>> @@ -2531,6 +2549,19 @@ static int process_mem_topology(struct feat_fd *ff,
>> return ret;
>> }
>>
>> +static int process_clockid(struct feat_fd *ff,
>> + void *data __maybe_unused)
>> +{
>> + size_t clockid_freq;
>> +
>> + if (do_read_u64(ff, &clockid_freq))
>> + return -1;
>> +
>> + ff->ph->env.clockid_freq = clockid_freq;
>> +
>> + return 0;
>> +}
>> +
>> struct feature_ops {
>> int (*write)(struct feat_fd *ff, struct perf_evlist *evlist);
>> void (*print)(struct feat_fd *ff, FILE *fp);
>> @@ -2590,6 +2621,7 @@ static const struct feature_ops feat_ops[HEADER_LAST_FEATURE] = {
>> FEAT_OPN(CACHE, cache, true),
>> FEAT_OPR(SAMPLE_TIME, sample_time, false),
>> FEAT_OPR(MEM_TOPOLOGY, mem_topology, true),
>> + FEAT_OPR(CLOCKID, clockid, false)
>> };
>>
>> struct header_print_data {
>> diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
>> index e17903caa71d..0d553ddca0a3 100644
>> --- a/tools/perf/util/header.h
>> +++ b/tools/perf/util/header.h
>> @@ -38,6 +38,7 @@ enum {
>> HEADER_CACHE,
>> HEADER_SAMPLE_TIME,
>> HEADER_MEM_TOPOLOGY,
>> + HEADER_CLOCKID,
>> HEADER_LAST_FEATURE,
>> HEADER_FEAT_BITS = 256,
>> };
>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-09-27 12:54 [PATCH v1] perf record: encode -k clockid frequency into Perf trace Alexey Budankov
2018-09-27 16:02 ` Jiri Olsa
2018-09-28 6:38 ` Alexey Budankov
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