perf top tui: Wait till the first sample to refresh the screen.
Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -72,6 +72,7 @@ static struct perf_top top = {
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.target_tid = -1,
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.target_tid = -1,
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.active_symbols = LIST_HEAD_INIT(top.active_symbols),
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.active_symbols = LIST_HEAD_INIT(top.active_symbols),
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.active_symbols_lock = PTHREAD_MUTEX_INITIALIZER,
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.active_symbols_lock = PTHREAD_MUTEX_INITIALIZER,
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.active_symbols_cond = PTHREAD_COND_INITIALIZER,
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.freq = 1000, /* 1 KHz */
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.freq = 1000, /* 1 KHz */
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};
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};
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@ -577,7 +578,17 @@ static void handle_keypress(struct perf_session *session, int c)
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static void *display_thread_tui(void *arg __used)
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static void *display_thread_tui(void *arg __used)
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{
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{
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perf_top__tui_browser(&top);
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int err = 0;
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pthread_mutex_lock(&top.active_symbols_lock);
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while (list_empty(&top.active_symbols)) {
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err = pthread_cond_wait(&top.active_symbols_cond,
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&top.active_symbols_lock);
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if (err)
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break;
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}
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pthread_mutex_unlock(&top.active_symbols_lock);
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if (!err)
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perf_top__tui_browser(&top);
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exit_browser(0);
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exit_browser(0);
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exit(0);
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exit(0);
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return NULL;
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return NULL;
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@ -776,8 +787,14 @@ static void perf_event__process_sample(const union perf_event *event,
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syme->count[evsel->idx]++;
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syme->count[evsel->idx]++;
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record_precise_ip(syme, evsel->idx, ip);
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record_precise_ip(syme, evsel->idx, ip);
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pthread_mutex_lock(&top.active_symbols_lock);
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pthread_mutex_lock(&top.active_symbols_lock);
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if (list_empty(&syme->node) || !syme->node.next)
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if (list_empty(&syme->node) || !syme->node.next) {
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static bool first = true;
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__list_insert_active_sym(syme);
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__list_insert_active_sym(syme);
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if (first) {
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pthread_cond_broadcast(&top.active_symbols_cond);
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first = false;
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}
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}
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pthread_mutex_unlock(&top.active_symbols_lock);
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pthread_mutex_unlock(&top.active_symbols_lock);
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}
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}
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}
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}
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@ -35,6 +35,7 @@ struct perf_top {
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*/
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*/
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struct list_head active_symbols;
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struct list_head active_symbols;
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pthread_mutex_t active_symbols_lock;
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pthread_mutex_t active_symbols_lock;
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pthread_cond_t active_symbols_cond;
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u64 samples;
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u64 samples;
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u64 kernel_samples, us_samples;
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u64 kernel_samples, us_samples;
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u64 exact_samples;
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u64 exact_samples;
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