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| author | Daniel Thompson <daniel.thompson@linaro.org> | 2015-03-18 11:07:42 +0000 |
|---|---|---|
| committer | Daniel Thompson <daniel.thompson@linaro.org> | 2015-03-18 14:18:01 +0000 |
| commit | a02fe5da35a5188596b3290806cfbc5941444844 (patch) | |
| tree | c406c23df74c7be817c9a693dc58770994eb3ace /arch/arm64/include/asm | |
| parent | d4796e458e69a0d52f8ea017cb424d0a09312130 (diff) | |
| download | linux-a02fe5da35a5188596b3290806cfbc5941444844.tar.gz | |
arm64: Add support for on-demand backtrace of other CPUsdev/arm64_nmi-v4.0
Currently arm64 has no implementation of arch_trigger_all_cpu_backtace.
The patch provides one for arm64 systems that are built with
CONFIG_USE_ICC_SYSREGS_FOR_IRQFLAGS (i.e. those that have a pseudo-NMI).
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Diffstat (limited to 'arch/arm64/include/asm')
| -rw-r--r-- | arch/arm64/include/asm/hardirq.h | 2 | ||||
| -rw-r--r-- | arch/arm64/include/asm/irq.h | 5 | ||||
| -rw-r--r-- | arch/arm64/include/asm/smp.h | 4 |
3 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/hardirq.h b/arch/arm64/include/asm/hardirq.h index 6aae421f4d73..e8a3268a891c 100644 --- a/arch/arm64/include/asm/hardirq.h +++ b/arch/arm64/include/asm/hardirq.h @@ -20,7 +20,7 @@ #include <linux/threads.h> #include <asm/irq.h> -#define NR_IPI 5 +#define NR_IPI 6 typedef struct { unsigned int __softirq_pending; diff --git a/arch/arm64/include/asm/irq.h b/arch/arm64/include/asm/irq.h index 94c53674a31d..4f974a2959bb 100644 --- a/arch/arm64/include/asm/irq.h +++ b/arch/arm64/include/asm/irq.h @@ -8,4 +8,9 @@ struct pt_regs; extern void migrate_irqs(void); extern void set_handle_irq(void (*handle_irq)(struct pt_regs *)); +#if defined CONFIG_SMP && defined CONFIG_USE_ICC_SYSREGS_FOR_IRQFLAGS +extern void arch_trigger_all_cpu_backtrace(bool); +#define arch_trigger_all_cpu_backtrace(x) arch_trigger_all_cpu_backtrace(x) +#endif + #endif diff --git a/arch/arm64/include/asm/smp.h b/arch/arm64/include/asm/smp.h index 780f82c827b6..9b3b5663b88b 100644 --- a/arch/arm64/include/asm/smp.h +++ b/arch/arm64/include/asm/smp.h @@ -24,6 +24,10 @@ # error "<asm/smp.h> included in non-SMP build" #endif +#ifdef CONFIG_USE_ICC_SYSREGS_FOR_IRQFLAGS +#define SMP_IPI_NMI_MASK (1 << 5) +#endif + #define raw_smp_processor_id() (current_thread_info()->cpu) struct seq_file; |