linux-kernel - Re: [PATCH 05/24] cputime: Safely read cputime of full dynticks CPUs

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Date:	Sat, 22 Dec 2012 18:51:29 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Steven Rostedt <rostedt@...dmis.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Alessio Igor Bogani <abogani@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Avi Kivity <avi@...hat.com>,
	Chris Metcalf <cmetcalf@...era.com>,
	Christoph Lameter <cl@...ux.com>,
	Geoff Levand <geoff@...radead.org>,
	Gilad Ben Yossef <gilad@...yossef.com>,
	Hakan Akkan <hakanakkan@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 05/24] cputime: Safely read cputime of full dynticks CPUs

2012/12/21 Steven Rostedt <rostedt@...dmis.org>:
> On Thu, 2012-12-20 at 19:32 +0100, Frederic Weisbecker wrote:
>
>> --- a/include/linux/init_task.h
>> +++ b/include/linux/init_task.h
>> @@ -10,6 +10,7 @@
>>  #include <linux/pid_namespace.h>
>>  #include <linux/user_namespace.h>
>>  #include <linux/securebits.h>
>> +#include <linux/seqlock.h>
>>  #include <net/net_namespace.h>
>>
>>  #ifdef CONFIG_SMP
>> @@ -141,6 +142,13 @@ extern struct task_group root_task_group;
>>  # define INIT_PERF_EVENTS(tsk)
>>  #endif
>>
>> +#ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN
>> +#define INIT_VTIME(tsk)                                              \
>> +     .vtime_seqlock = __SEQLOCK_UNLOCKED(tsk.vtime_seqlock), \
>> +     .prev_jiffies = INITIAL_JIFFIES, /* CHECKME */          \
>> +     .prev_jiffies_whence = JIFFIES_SYS,
>
> #else
> # define INIT_VTIME(tsk)
> #endif
>
> Otherwise it fails to compile when CONFIG_VIRT_CPU_ACCOUNTING_GEN is not
> set.

Fixed for the next version, thanks!
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