From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp05.au.ibm.com (e23smtp05.au.ibm.com [202.81.31.147]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e23smtp05.au.ibm.com", Issuer "GeoTrust SSL CA" (not verified)) by ozlabs.org (Postfix) with ESMTPS id E8C4A2C0B48 for ; Wed, 26 Jun 2013 06:36:45 +1000 (EST) Received: from /spool/local by e23smtp05.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 26 Jun 2013 06:30:37 +1000 Received: from d23relay04.au.ibm.com (d23relay04.au.ibm.com [9.190.234.120]) by d23dlp03.au.ibm.com (Postfix) with ESMTP id 3AD2E3578053 for ; Wed, 26 Jun 2013 06:36:42 +1000 (EST) Received: from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.234.96]) by d23relay04.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r5PKLqF08389026 for ; Wed, 26 Jun 2013 06:21:52 +1000 Received: from d23av01.au.ibm.com (loopback [127.0.0.1]) by d23av01.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r5PKaeIC006588 for ; Wed, 26 Jun 2013 06:36:41 +1000 From: "Srivatsa S. Bhat" Subject: [PATCH v2 40/45] powerpc, irq: Use GFP_ATOMIC allocations in atomic context To: tglx@linutronix.de, peterz@infradead.org, tj@kernel.org, oleg@redhat.com, paulmck@linux.vnet.ibm.com, rusty@rustcorp.com.au, mingo@kernel.org, akpm@linux-foundation.org, namhyung@kernel.org, walken@google.com, vincent.guittot@linaro.org, laijs@cn.fujitsu.com Date: Wed, 26 Jun 2013 02:03:11 +0530 Message-ID: <20130625203310.16593.6214.stgit@srivatsabhat.in.ibm.com> In-Reply-To: <20130625202452.16593.22810.stgit@srivatsabhat.in.ibm.com> References: <20130625202452.16593.22810.stgit@srivatsabhat.in.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Cc: linux-arch@vger.kernel.org, nikunj@linux.vnet.ibm.com, Li Zhong , linux-pm@vger.kernel.org, fweisbec@gmail.com, linux-kernel@vger.kernel.org, Steven Rostedt , xiaoguangrong@linux.vnet.ibm.com, sbw@mit.edu, Paul Mackerras , wangyun@linux.vnet.ibm.com, "Srivatsa S. Bhat" , netdev@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Ian Munsie List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , The function migrate_irqs() is called with interrupts disabled and hence its not safe to do GFP_KERNEL allocations inside it, because they can sleep. So change the gfp mask to GFP_ATOMIC. Cc: Benjamin Herrenschmidt Cc: Michael Ellerman Cc: Paul Mackerras Cc: Ian Munsie Cc: Steven Rostedt Cc: Michael Ellerman Cc: Li Zhong Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Srivatsa S. Bhat --- arch/powerpc/kernel/irq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index ea185e0..ca39bac 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -412,7 +412,7 @@ void migrate_irqs(void) cpumask_var_t mask; const struct cpumask *map = cpu_online_mask; - alloc_cpumask_var(&mask, GFP_KERNEL); + alloc_cpumask_var(&mask, GFP_ATOMIC); for_each_irq_desc(irq, desc) { struct irq_data *data;