From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Priyanka Jain <Priyanka.Jain@freescale.com>
Cc: linux-rt-users@vger.kernel.org, rostedt@goodmis.org
Subject: Re: [PATCH] powerpc/64bit,PREEMPT_RT: Check preempt_count before preempting
Date: Thu, 25 Apr 2013 18:58:16 +0200 [thread overview]
Message-ID: <20130425165816.GH5561@linutronix.de> (raw)
In-Reply-To: <1366004896-3006-1-git-send-email-Priyanka.Jain@freescale.com>
* Priyanka Jain | 2013-04-15 11:18:16 [+0530]:
>Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
>---
> arch/powerpc/kernel/entry_64.S | 2 ++
> 1 files changed, 2 insertions(+), 0 deletions(-)
>
>diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
>index 1b1c8ae..ec120e6 100644
>--- a/arch/powerpc/kernel/entry_64.S
>+++ b/arch/powerpc/kernel/entry_64.S
>@@ -643,6 +643,8 @@ resume_kernel:
> #ifdef CONFIG_PREEMPT
> /* Check if we need to preempt */
> lwz r8,TI_PREEMPT(r9)
>+ cmpwi 0,r8,0 /* if non-zero, just restore regs and return */
>+ bne restore
> andi. r0,r4,_TIF_NEED_RESCHED
> bne+ check_count
Oh boy oh boy. Thanks for caching this. Steven please take this to v3.6,
don't see this chunk in v3.4.
Priyanka: does 64bit power work fine on v3.6/v3.8 besides this?
Sebastian
next prev parent reply other threads:[~2013-04-25 16:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-15 5:48 [PATCH] powerpc/64bit,PREEMPT_RT: Check preempt_count before preempting Priyanka Jain
2013-04-25 16:58 ` Sebastian Andrzej Siewior [this message]
2013-04-26 4:01 ` Jain Priyanka-B32167
-- strict thread matches above, loose matches on Subject: below --
2013-04-15 5:47 Priyanka Jain
2013-04-15 5:50 ` Jain Priyanka-B32167
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