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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-09-04 00:57:13 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-07-17 13:23:30 +0200 |
| commit | 96f0e00378d4a1fc1b79933ef84e1595015de808 (patch) | |
| tree | ede21e674c04e85d4bd322d83541c10f4e3ae6d5 /arch/arm/include/asm/irq.h | |
| parent | nmi: x86: convert to generic nmi handler (diff) | |
| download | linux-96f0e00378d4a1fc1b79933ef84e1595015de808.tar.xz linux-96f0e00378d4a1fc1b79933ef84e1595015de808.zip | |
ARM: add basic support for on-demand backtrace of other CPUs
As we now have generic infrastructure to support backtracing of other
CPUs in the system on lockups, we can start to implement this for ARM.
Initially, we add an IPI based implementation, as the GIC code needs
modification to support the generation of FIQ IPIs, and not all ARM
platforms have the ability to raise a FIQ in the non-secure world.
This provides us with a "best efforts" implementation in the absence
of FIQs.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/asm/irq.h')
| -rw-r--r-- | arch/arm/include/asm/irq.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/include/asm/irq.h b/arch/arm/include/asm/irq.h index 53c15dec7af6..be1d07d59ee9 100644 --- a/arch/arm/include/asm/irq.h +++ b/arch/arm/include/asm/irq.h @@ -35,6 +35,11 @@ extern void (*handle_arch_irq)(struct pt_regs *); extern void set_handle_irq(void (*handle_irq)(struct pt_regs *)); #endif +#ifdef CONFIG_SMP +extern void arch_trigger_all_cpu_backtrace(bool); +#define arch_trigger_all_cpu_backtrace(x) arch_trigger_all_cpu_backtrace(x) +#endif + #endif #endif |