From mboxrd@z Thu Jan 1 00:00:00 1970 From: Russell King - ARM Linux Date: Wed, 27 Apr 2016 09:31:45 +0000 Subject: Re: [PATCH v5 1/4] printk/nmi: generic solution for safe printk in NMI Message-Id: <20160427093145.GJ19428@n2100.arm.linux.org.uk> List-Id: References: <1461239325-22779-1-git-send-email-pmladek@suse.com> <1461239325-22779-2-git-send-email-pmladek@suse.com> In-Reply-To: <1461239325-22779-2-git-send-email-pmladek@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-arm-kernel@lists.infradead.org On Thu, Apr 21, 2016 at 01:48:42PM +0200, Petr Mladek wrote: > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index cdfa6c2b7626..259543ec6dc9 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -66,6 +66,7 @@ config ARM > select HAVE_KRETPROBES if (HAVE_KPROBES) > select HAVE_MEMBLOCK > select HAVE_MOD_ARCH_SPECIFIC > + select HAVE_NMI > select HAVE_OPROFILE if (HAVE_PERF_EVENTS) > select HAVE_OPTPROBES if !THUMB2_KERNEL > select HAVE_PERF_EVENTS > diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c > index baee70267f29..df90bc59bfce 100644 > --- a/arch/arm/kernel/smp.c > +++ b/arch/arm/kernel/smp.c > @@ -644,9 +644,11 @@ void handle_IPI(int ipinr, struct pt_regs *regs) > break; > > case IPI_CPU_BACKTRACE: > + printk_nmi_enter(); > irq_enter(); > nmi_cpu_backtrace(regs); > irq_exit(); > + printk_nmi_exit(); > break; > > default: For the above, Acked-by: Russell King -- RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753541AbcD0Jdn (ORCPT ); Wed, 27 Apr 2016 05:33:43 -0400 Received: from pandora.arm.linux.org.uk ([78.32.30.218]:53221 "EHLO pandora.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752346AbcD0Jdj (ORCPT ); Wed, 27 Apr 2016 05:33:39 -0400 Date: Wed, 27 Apr 2016 10:31:45 +0100 From: Russell King - ARM Linux To: Petr Mladek Cc: Andrew Morton , Peter Zijlstra , Steven Rostedt , Daniel Thompson , Jiri Kosina , Ingo Molnar , Thomas Gleixner , Sergey Senozhatsky , Chris Metcalf , linux-kernel@vger.kernel.org, x86@kernel.org, linux-arm-kernel@lists.infradead.org, adi-buildroot-devel@lists.sourceforge.net, linux-cris-kernel@axis.com, linux-mips@linux-mips.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, Jan Kara , Ralf Baechle , Benjamin Herrenschmidt , Martin Schwidefsky , David Miller Subject: Re: [PATCH v5 1/4] printk/nmi: generic solution for safe printk in NMI Message-ID: <20160427093145.GJ19428@n2100.arm.linux.org.uk> References: <1461239325-22779-1-git-send-email-pmladek@suse.com> <1461239325-22779-2-git-send-email-pmladek@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1461239325-22779-2-git-send-email-pmladek@suse.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Apr 21, 2016 at 01:48:42PM +0200, Petr Mladek wrote: > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index cdfa6c2b7626..259543ec6dc9 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -66,6 +66,7 @@ config ARM > select HAVE_KRETPROBES if (HAVE_KPROBES) > select HAVE_MEMBLOCK > select HAVE_MOD_ARCH_SPECIFIC > + select HAVE_NMI > select HAVE_OPROFILE if (HAVE_PERF_EVENTS) > select HAVE_OPTPROBES if !THUMB2_KERNEL > select HAVE_PERF_EVENTS > diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c > index baee70267f29..df90bc59bfce 100644 > --- a/arch/arm/kernel/smp.c > +++ b/arch/arm/kernel/smp.c > @@ -644,9 +644,11 @@ void handle_IPI(int ipinr, struct pt_regs *regs) > break; > > case IPI_CPU_BACKTRACE: > + printk_nmi_enter(); > irq_enter(); > nmi_cpu_backtrace(regs); > irq_exit(); > + printk_nmi_exit(); > break; > > default: For the above, Acked-by: Russell King -- RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net. From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@arm.linux.org.uk (Russell King - ARM Linux) Date: Wed, 27 Apr 2016 10:31:45 +0100 Subject: [PATCH v5 1/4] printk/nmi: generic solution for safe printk in NMI In-Reply-To: <1461239325-22779-2-git-send-email-pmladek@suse.com> References: <1461239325-22779-1-git-send-email-pmladek@suse.com> <1461239325-22779-2-git-send-email-pmladek@suse.com> Message-ID: <20160427093145.GJ19428@n2100.arm.linux.org.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu, Apr 21, 2016 at 01:48:42PM +0200, Petr Mladek wrote: > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig > index cdfa6c2b7626..259543ec6dc9 100644 > --- a/arch/arm/Kconfig > +++ b/arch/arm/Kconfig > @@ -66,6 +66,7 @@ config ARM > select HAVE_KRETPROBES if (HAVE_KPROBES) > select HAVE_MEMBLOCK > select HAVE_MOD_ARCH_SPECIFIC > + select HAVE_NMI > select HAVE_OPROFILE if (HAVE_PERF_EVENTS) > select HAVE_OPTPROBES if !THUMB2_KERNEL > select HAVE_PERF_EVENTS > diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c > index baee70267f29..df90bc59bfce 100644 > --- a/arch/arm/kernel/smp.c > +++ b/arch/arm/kernel/smp.c > @@ -644,9 +644,11 @@ void handle_IPI(int ipinr, struct pt_regs *regs) > break; > > case IPI_CPU_BACKTRACE: > + printk_nmi_enter(); > irq_enter(); > nmi_cpu_backtrace(regs); > irq_exit(); > + printk_nmi_exit(); > break; > > default: For the above, Acked-by: Russell King -- RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.