From mboxrd@z Thu Jan 1 00:00:00 1970 From: atomlin@redhat.com (Aaron Tomlin) Date: Thu, 14 Apr 2016 16:17:05 +0100 Subject: [PATCH v5 1/4] nmi_backtrace: add more trigger_*_cpu_backtrace() methods In-Reply-To: <1459877208-15119-2-git-send-email-cmetcalf@mellanox.com> References: <1459877208-15119-1-git-send-email-cmetcalf@mellanox.com> <1459877208-15119-2-git-send-email-cmetcalf@mellanox.com> Message-ID: <20160414151705.GE20425@atomlin.usersys.redhat.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue 2016-04-05 13:26 -0400, Chris Metcalf wrote: > Currently you can only request a backtrace of either all cpus, or > all cpus but yourself. It can also be helpful to request a remote > backtrace of a single cpu, and since we want that, the logical > extension is to support a cpumask as the underlying primitive. > > This change modifies the existing lib/nmi_backtrace.c code to take > a cpumask as its basic primitive, and modifies the linux/nmi.h code > to use either the old "all/all_but_self" arch methods, or the new > "cpumask" method, depending on which is available. > > The existing clients of nmi_backtrace (arm and x86) are converted > to using the new cpumask approach in this change. > > Signed-off-by: Chris Metcalf > --- > arch/arm/include/asm/irq.h | 4 +-- > arch/arm/kernel/smp.c | 4 +-- > arch/x86/include/asm/irq.h | 4 +-- > arch/x86/kernel/apic/hw_nmi.c | 6 ++--- > include/linux/nmi.h | 63 ++++++++++++++++++++++++++++++++++--------- > lib/nmi_backtrace.c | 15 +++++------ > 6 files changed, 65 insertions(+), 31 deletions(-) Looks good to me. Reviewed-by: Aaron Tomlin -- Aaron Tomlin