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perf timechart: Add p_state_end helper

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Wrap repeated code in helper functions p_state_end, which alloc a new
power_event recording last pstate, and insert to the head of
tchart->power_events.

Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220908021141.27134-5-shangxiaojing@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Shang XiaoJing 2022-09-08 10:11:41 +08:00 committed by Arnaldo Carvalho de Melo
parent 569c746b8a
commit 3e8d21b922
1 changed files with 18 additions and 19 deletions
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37
tools/perf/builtin-timechart.c
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@ -376,16 +376,13 @@ static void c_state_end(struct timechart *tchart, int cpu, u64 timestamp)
tchart->power_events = pwr;
}
static void p_state_change(struct timechart *tchart, int cpu, u64 timestamp, u64 new_freq)
static struct power_event *p_state_end(struct timechart *tchart, int cpu,
u64 timestamp)
{
struct power_event *pwr;
struct power_event *pwr = zalloc(sizeof(*pwr));
if (new_freq > 8000000) /* detect invalid data */
return;
pwr = zalloc(sizeof(*pwr));
if (!pwr)
return;
return NULL;
pwr->state = cpus_pstate_state[cpu];
pwr->start_time = cpus_pstate_start_times[cpu];
@ -393,11 +390,23 @@ static void p_state_change(struct timechart *tchart, int cpu, u64 timestamp, u64
pwr->cpu = cpu;
pwr->type = PSTATE;
pwr->next = tchart->power_events;
if (!pwr->start_time)
pwr->start_time = tchart->first_time;
tchart->power_events = pwr;
return pwr;
}
static void p_state_change(struct timechart *tchart, int cpu, u64 timestamp, u64 new_freq)
{
struct power_event *pwr;
if (new_freq > 8000000) /* detect invalid data */
return;
pwr = p_state_end(tchart, cpu, timestamp);
if (!pwr)
return;
cpus_pstate_state[cpu] = new_freq;
cpus_pstate_start_times[cpu] = timestamp;
@ -705,22 +714,12 @@ static void end_sample_processing(struct timechart *tchart)
#endif
/* P state */
pwr = zalloc(sizeof(*pwr));
pwr = p_state_end(tchart, cpu, tchart->last_time);
if (!pwr)
return;
pwr->state = cpus_pstate_state[cpu];
pwr->start_time = cpus_pstate_start_times[cpu];
pwr->end_time = tchart->last_time;
pwr->cpu = cpu;
pwr->type = PSTATE;
pwr->next = tchart->power_events;
if (!pwr->start_time)
pwr->start_time = tchart->first_time;
if (!pwr->state)
pwr->state = tchart->min_freq;
tchart->power_events = pwr;
}
}