diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/include/asm/dbell.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/dbell.c | 10 | ||||
| -rw-r--r-- | arch/powerpc/kernel/irq.c | 4 |
3 files changed, 13 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/dbell.h b/arch/powerpc/include/asm/dbell.h index ced7e487ca27..0893ab9343a6 100644 --- a/arch/powerpc/include/asm/dbell.h +++ b/arch/powerpc/include/asm/dbell.h @@ -29,6 +29,7 @@ enum ppc_dbell { extern void doorbell_message_pass(int target, int msg); extern void doorbell_exception(struct pt_regs *regs); +extern void doorbell_check_self(void); extern void doorbell_setup_this_cpu(void); static inline void ppc_msgsnd(enum ppc_dbell type, u32 flags, u32 tag) diff --git a/arch/powerpc/kernel/dbell.c b/arch/powerpc/kernel/dbell.c index f7b518894c80..3307a52d797f 100644 --- a/arch/powerpc/kernel/dbell.c +++ b/arch/powerpc/kernel/dbell.c @@ -81,6 +81,16 @@ out: set_irq_regs(old_regs); } +void doorbell_check_self(void) +{ + struct doorbell_cpu_info *info = &__get_cpu_var(doorbell_cpu_info); + + if (!info->messages) + return; + + ppc_msgsnd(PPC_DBELL, 0, info->tag); +} + #else /* CONFIG_SMP */ void doorbell_exception(struct pt_regs *regs) { diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 2f6dc7faf6de..8f96d3198905 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -156,8 +156,8 @@ notrace void raw_local_irq_restore(unsigned long en) return; #if defined(CONFIG_BOOKE) && defined(CONFIG_SMP) - /* Check for pending doorbell interrupts on SMP */ - doorbell_exception(NULL); + /* Check for pending doorbell interrupts and resend to ourself */ + doorbell_check_self(); #endif /* |