From: Frederic Weisbecker <fweisbec@gmail.com>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
John Stultz <john.stultz@linaro.org>,
Steven Rostedt <rostedt@goodmis.org>,
Don Zickus <dzickus@redhat.com>
Subject: [RFC PATCH 3/6] x86: Tell that sched clock is callable in nmi
Date: Wed, 21 Aug 2013 18:42:18 +0200 [thread overview]
Message-ID: <1377103341-15235-4-git-send-email-fweisbec@gmail.com> (raw)
In-Reply-To: <1377103341-15235-1-git-send-email-fweisbec@gmail.com>
The x86 version of sched_clock() seem to be safely callable
from NMIs, tell about that.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Don Zickus <dzickus@redhat.com>
---
arch/x86/Kconfig | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 7fbda5c..fc7c34c 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -125,6 +125,7 @@ config X86
select RTC_LIB
select HAVE_DEBUG_STACKOVERFLOW
select HAVE_NSECS_TO_CYCLES
+ select HAVE_SCHED_CLOCK_NMI
config INSTRUCTION_DECODER
def_bool y
--
1.7.5.4
next prev parent reply other threads:[~2013-08-21 16:46 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-21 16:42 [RFC PATCH 0/6] timekeeping: Missing timekeeping update detection Frederic Weisbecker
2013-08-21 16:42 ` [RFC PATCH 1/6] sched: Let arch tell us if sched clock is NMI-safe Frederic Weisbecker
2013-08-21 16:42 ` [RFC PATCH 2/6] x86: nsecs to cycles conversion Frederic Weisbecker
2013-08-21 18:26 ` Don Zickus
2013-08-30 10:35 ` Frederic Weisbecker
2013-08-21 16:42 ` Frederic Weisbecker [this message]
2013-08-21 16:42 ` [RFC PATCH 4/6] seqlock: Add raw_seqbegin() for non-waiting readers Frederic Weisbecker
2013-08-21 16:42 ` [RFC PATCH 5/6] jiffies: Add jiffies_to_nsecs Frederic Weisbecker
2013-08-21 16:42 ` [RFC PATCH 6/6] timekeeping: Debug missing timekeeping updates Frederic Weisbecker
2013-08-21 17:25 ` John Stultz
2013-08-30 11:05 ` Frederic Weisbecker
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