[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <1457394338-11865-1-git-send-email-yang.shi@windriver.com>
Date: Mon, 7 Mar 2016 15:45:38 -0800
From: Yang Shi <yang.shi@...driver.com>
To: <tglx@...utronix.de>, <bigeasy@...utronix.de>,
<rostedt@...dmis.org>
CC: <linux-kernel@...r.kernel.org>, <linux-rt-users@...r.kernel.org>,
<yang.shi@...driver.com>
Subject: [v4.4-rt PATCH] rt: trace: add rcuidle version macro for preemptirqsoff_hist and hrtimer_interrupt
When building rt kernel with IRQSOFF_TRACER enabled but INTERRUPT_OFF_HIST or
PREEMPT_OFF_HIST disabled, the below build failure will be triggered:
| /home/yshi/linux-rt/kernel/trace/trace_irqsoff.c: In function 'time_hardirqs_on':
| /home/yshi/linux-rt/kernel/trace/trace_irqsoff.c:453:2: error: implicit declaration of function 'trace_preemptirqsoff_hist_rcuidle' [-Werror=implicit-function-declaration]
| trace_preemptirqsoff_hist_rcuidle(IRQS_ON, 0);
| ^
| cc1: some warnings being treated as errors
| /home/yshi/linux-rt/scripts/Makefile.build:258: recipe for target 'kernel/trace/trace_irqsoff.o' failed
| make[4]: *** [kernel/trace/trace_irqsoff.o] Error 1
| make[4]: *** Waiting for unfinished jobs....
| /home/yshi/linux-rt/scripts/Makefile.build:403: recipe for target 'kernel/trace' failed
Because rcuidle version is just defined by TRACE_EVENT when both
PREEMPT_OFF_HIST and PREEMPT_OFF_HIST is selected, otherwise just
trace_preemptirqsoff_hist is defined as a preprocessor macro.
Added rcuidle version macro when the condition is false, and added rcuidle
version macro for trace_hrtimer_interrupt_rcuidle even though it is not called
by anyone.
Reported-by: Henning Schild <henning.schild@...mens.com>
Signed-off-by: Yang Shi <yang.shi@...driver.com>
---
Forward port the 4.1 version patch [1] to 4.4.
[1] http://www.spinics.net/lists/linux-rt-users/msg14037.html
include/trace/events/hist.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/trace/events/hist.h b/include/trace/events/hist.h
index 6122e42..37f6eb8 100644
--- a/include/trace/events/hist.h
+++ b/include/trace/events/hist.h
@@ -9,6 +9,7 @@
#if !defined(CONFIG_PREEMPT_OFF_HIST) && !defined(CONFIG_INTERRUPT_OFF_HIST)
#define trace_preemptirqsoff_hist(a, b)
+#define trace_preemptirqsoff_hist_rcuidle(a, b)
#else
TRACE_EVENT(preemptirqsoff_hist,
@@ -33,6 +34,7 @@ TRACE_EVENT(preemptirqsoff_hist,
#ifndef CONFIG_MISSED_TIMER_OFFSETS_HIST
#define trace_hrtimer_interrupt(a, b, c, d)
+#define trace_hrtimer_interrupt_rcuidle(a, b, c, d)
#else
TRACE_EVENT(hrtimer_interrupt,
--
2.0.2
Powered by blists - more mailing lists