Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756986Ab1CAREJ (ORCPT ); Tue, 1 Mar 2011 12:04:09 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:58317 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756938Ab1CAREF (ORCPT ); Tue, 1 Mar 2011 12:04:05 -0500 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Arnaldo Carvalho de Melo , Frederic Weisbecker , Ingo Molnar , Mike Galbraith , Paul Mackerras , Peter Zijlstra , Stephane Eranian , Tom Zanussi Subject: [PATCH 6/6] perf top tui: Wait till the first sample to refresh the screen. Date: Tue, 1 Mar 2011 14:03:47 -0300 Message-Id: <1298999027-30673-7-git-send-email-acme@infradead.org> X-Mailer: git-send-email 1.6.2.5 In-Reply-To: <1298999027-30673-1-git-send-email-acme@infradead.org> References: <1298999027-30673-1-git-send-email-acme@infradead.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by canuck.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2707 Lines: 83 From: Arnaldo Carvalho de Melo Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Tom Zanussi LKML-Reference: Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-top.c | 21 +++++++++++++++++++-- tools/perf/util/top.h | 1 + 2 files changed, 20 insertions(+), 2 deletions(-) diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 0b07cc3..417f757 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -72,6 +72,7 @@ static struct perf_top top = { .target_tid = -1, .active_symbols = LIST_HEAD_INIT(top.active_symbols), .active_symbols_lock = PTHREAD_MUTEX_INITIALIZER, + .active_symbols_cond = PTHREAD_COND_INITIALIZER, .freq = 1000, /* 1 KHz */ }; @@ -577,7 +578,17 @@ static void handle_keypress(struct perf_session *session, int c) static void *display_thread_tui(void *arg __used) { - perf_top__tui_browser(&top); + int err = 0; + pthread_mutex_lock(&top.active_symbols_lock); + while (list_empty(&top.active_symbols)) { + err = pthread_cond_wait(&top.active_symbols_cond, + &top.active_symbols_lock); + if (err) + break; + } + pthread_mutex_unlock(&top.active_symbols_lock); + if (!err) + perf_top__tui_browser(&top); exit_browser(0); exit(0); return NULL; @@ -776,8 +787,14 @@ static void perf_event__process_sample(const union perf_event *event, syme->count[evsel->idx]++; record_precise_ip(syme, evsel->idx, ip); pthread_mutex_lock(&top.active_symbols_lock); - if (list_empty(&syme->node) || !syme->node.next) + if (list_empty(&syme->node) || !syme->node.next) { + static bool first = true; __list_insert_active_sym(syme); + if (first) { + pthread_cond_broadcast(&top.active_symbols_cond); + first = false; + } + } pthread_mutex_unlock(&top.active_symbols_lock); } } diff --git a/tools/perf/util/top.h b/tools/perf/util/top.h index e8d28e2..96d1cb7 100644 --- a/tools/perf/util/top.h +++ b/tools/perf/util/top.h @@ -35,6 +35,7 @@ struct perf_top { */ struct list_head active_symbols; pthread_mutex_t active_symbols_lock; + pthread_cond_t active_symbols_cond; u64 samples; u64 kernel_samples, us_samples; u64 exact_samples; -- 1.6.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/