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| author | Chris Metcalf <cmetcalf@mellanox.com> | 2016-10-07 17:02:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-10-07 18:46:30 -0700 |
| commit | 511f8389454e55ece5115dc3bc84a0947788ff4f (patch) | |
| tree | dfc902d595e5f55141f84a29a7b11c750b09c615 /arch/tile/include | |
| parent | 677664895278267a80bda0e3b26821d60cdbebf5 (diff) | |
| download | linux-511f8389454e55ece5115dc3bc84a0947788ff4f.tar.bz2 | |
arch/tile: adopt the new nmi_backtrace framework
Previously tile was rolling its own method of capturing backtrace data
in the NMI handlers, but it was relying on running printk() from the NMI
handler, which is not always safe. So adopt the nmi_backtrace model
(with the new cpumask extension) instead.
So we can call the nmi_backtrace code directly from the nmi handler,
move the nmi_enter()/exit() into the top-level tile NMI handler.
The semantics of the routine change slightly since it is now synchronous
with the remote cores completing the backtraces. Previously it was
asynchronous, but with protection to avoid starting a new remote
backtrace if the old one was still in progress.
Link: http://lkml.kernel.org/r/1472487169-14923-4-git-send-email-cmetcalf@mellanox.com
Signed-off-by: Chris Metcalf <cmetcalf@mellanox.com>
Cc: Daniel Thompson <daniel.thompson@linaro.org> [arm]
Cc: Petr Mladek <pmladek@suse.com>
Cc: Aaron Tomlin <atomlin@redhat.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/tile/include')
| -rw-r--r-- | arch/tile/include/asm/irq.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/tile/include/asm/irq.h b/arch/tile/include/asm/irq.h index 84a924034bdb..1fa1f2544ff9 100644 --- a/arch/tile/include/asm/irq.h +++ b/arch/tile/include/asm/irq.h @@ -79,8 +79,9 @@ void tile_irq_activate(unsigned int irq, int tile_irq_type); void setup_irq_regs(void); #ifdef __tilegx__ -void arch_trigger_all_cpu_backtrace(bool self); -#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace +void arch_trigger_cpumask_backtrace(const struct cpumask *mask, + bool exclude_self); +#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace #endif #endif /* _ASM_TILE_IRQ_H */ |