From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754145Ab1GBDqw (ORCPT ); Fri, 1 Jul 2011 23:46:52 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:60659 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753229Ab1GBDpP (ORCPT ); Fri, 1 Jul 2011 23:45:15 -0400 X-Authority-Analysis: v=1.1 cv=IOX921YOuPvYFce5aSLzPVIStpiCPR9M8R83dyHW74w= c=1 sm=0 a=vhdKIqpQuCYA:10 a=mTZrY9ukQicA:10 a=5SG0PmZfjMsA:10 a=bbbx4UPp9XUA:10 a=OPBmh+XkhLl+Enan7BmTLg==:17 a=20KFwNOVAAAA:8 a=VnNF1IyMAAAA:8 a=meVymXHHAAAA:8 a=jin6Ke8JD2JwPFUa8yMA:9 a=z7_iCoDVIs1BZQtyL3UA:7 a=jEp0ucaQiEUA:10 a=jeBq3FmKZ4MA:10 a=OPBmh+XkhLl+Enan7BmTLg==:117 X-Cloudmark-Score: 0 X-Originating-IP: 67.242.120.143 Message-Id: <20110702033854.283591061@goodmis.org> User-Agent: quilt/0.48-1 Date: Fri, 01 Jul 2011 23:04:44 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Andrew Morton , Martin Schwidefsky , Heiko Carstens Subject: [patch 09/11] s390/irqs: Do not trace arch_local_{*,irq_*} functions References: <20110702030435.308336775@goodmis.org> Content-Disposition: inline; filename=0009-s390-irqs-Do-not-trace-arch_local_-irq_-functions.patch Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Steven Rostedt Do not trace arch_local_save_flags(), arch_local_irq_*() and friends. Although they are marked inline, gcc may still make a function out of them and add it to the pool of functions that are traced by the function tracer. This can cause undesirable results (kernel panic, triple faults, etc). Add the notrace notation to prevent them from ever being traced. Cc: Martin Schwidefsky Cc: Heiko Carstens Signed-off-by: Steven Rostedt --- arch/s390/include/asm/irqflags.h | 16 ++++++++-------- 1 files changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/s390/include/asm/irqflags.h b/arch/s390/include/asm/irqflags.h index 865d6d8..38fdf45 100644 --- a/arch/s390/include/asm/irqflags.h +++ b/arch/s390/include/asm/irqflags.h @@ -29,42 +29,42 @@ }) /* set system mask. */ -static inline void __arch_local_irq_ssm(unsigned long flags) +static inline notrace void __arch_local_irq_ssm(unsigned long flags) { asm volatile("ssm %0" : : "Q" (flags) : "memory"); } -static inline unsigned long arch_local_save_flags(void) +static inline notrace unsigned long arch_local_save_flags(void) { return __arch_local_irq_stosm(0x00); } -static inline unsigned long arch_local_irq_save(void) +static inline notrace unsigned long arch_local_irq_save(void) { return __arch_local_irq_stnsm(0xfc); } -static inline void arch_local_irq_disable(void) +static inline notrace void arch_local_irq_disable(void) { arch_local_irq_save(); } -static inline void arch_local_irq_enable(void) +static inline notrace void arch_local_irq_enable(void) { __arch_local_irq_stosm(0x03); } -static inline void arch_local_irq_restore(unsigned long flags) +static inline notrace void arch_local_irq_restore(unsigned long flags) { __arch_local_irq_ssm(flags); } -static inline bool arch_irqs_disabled_flags(unsigned long flags) +static inline notrace bool arch_irqs_disabled_flags(unsigned long flags) { return !(flags & (3UL << (BITS_PER_LONG - 8))); } -static inline bool arch_irqs_disabled(void) +static inline notrace bool arch_irqs_disabled(void) { return arch_irqs_disabled_flags(arch_local_save_flags()); } -- 1.7.5.4