Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753558AbbEFCdD (ORCPT ); Tue, 5 May 2015 22:33:03 -0400 Received: from mail-ig0-f176.google.com ([209.85.213.176]:37740 "EHLO mail-ig0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751855AbbEFCdB (ORCPT ); Tue, 5 May 2015 22:33:01 -0400 From: Badhri Jagan Sridharan X-Google-Original-From: Badhri Jagan Sridharan To: Steven Rostedt , Ingo Molnar , Thomas Gleixner , John Stultz Cc: linux-kernel@vger.kernel.org, Badhri Jagan Sridharan Subject: [PATCH v2] tracing: timer: Add deferrable flag to timer_start Date: Tue, 5 May 2015 19:32:07 -0700 Message-Id: <1430879527-31114-1-git-send-email-Badhri@google.com> X-Mailer: git-send-email 2.2.0.rc0.207.ga3a616c Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2471 Lines: 78 The timer_start event now shows whether the timer is deferrable in case of a low-res timer. The debug_activate function now includes deferrable flag while calling trace_timer_start event. Signed-off-by: Badhri Jagan Sridharan --- Changelog since v1: - fixed indentation - moved deferrable flag checking to tracing code include/trace/events/timer.h | 14 +++++++++----- kernel/time/timer.c | 3 ++- 2 files changed, 11 insertions(+), 6 deletions(-) diff --git a/include/trace/events/timer.h b/include/trace/events/timer.h index 68c2c20..e69bb03 100644 --- a/include/trace/events/timer.h +++ b/include/trace/events/timer.h @@ -43,15 +43,17 @@ DEFINE_EVENT(timer_class, timer_init, */ TRACE_EVENT(timer_start, - TP_PROTO(struct timer_list *timer, unsigned long expires), + TP_PROTO(struct timer_list *timer, + unsigned long expires, char deferrable), - TP_ARGS(timer, expires), + TP_ARGS(timer, expires, deferrable), TP_STRUCT__entry( __field( void *, timer ) __field( void *, function ) __field( unsigned long, expires ) __field( unsigned long, now ) + __field( char, deferrable ) ), TP_fast_assign( @@ -59,11 +61,13 @@ TRACE_EVENT(timer_start, __entry->function = timer->function; __entry->expires = expires; __entry->now = jiffies; + __entry->deferrable = deferrable; ), - TP_printk("timer=%p function=%pf expires=%lu [timeout=%ld]", - __entry->timer, __entry->function, __entry->expires, - (long)__entry->expires - __entry->now) + TP_printk("timer=%p function=%pf expires=%lu [timeout=%ld] defer=%c", + __entry->timer, __entry->function, __entry->expires, + (long)__entry->expires - __entry->now, + __entry->deferrable > 0 ? 'y':'n') ); /** diff --git a/kernel/time/timer.c b/kernel/time/timer.c index 2ece3aa..e5588da 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -648,7 +648,8 @@ static inline void debug_activate(struct timer_list *timer, unsigned long expires) { debug_timer_activate(timer); - trace_timer_start(timer, expires); + trace_timer_start(timer, expires, + tbase_get_deferrable(timer->base)); } static inline void debug_deactivate(struct timer_list *timer) -- 2.2.0.rc0.207.ga3a616c -- 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/