diff options
| author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2012-11-27 21:54:41 -0500 |
|---|---|---|
| committer | Nicolas Pitre <nicolas.pitre@linaro.org> | 2013-05-13 19:03:37 -0400 |
| commit | 418e151df738a7a0ddfdeaf0ea389dad7f4a3b70 (patch) | |
| tree | 91ae9f8151a9c18e99b3362c799e1b1e24097bfb /arch/arm/include/asm/smp.h | |
| parent | e5ec0e38d6b3cca881b125db20dddd50d7eecbbf (diff) | |
ARM: SMP: basic IPI triggered completion support
We need a mechanism to let an inbound CPU signal that it is alive before
even getting into the kernel environment i.e. from early assembly code.
Using an IPI is the simplest way to achieve that.
This adds some basic infrastructure to register a struct completion
pointer to be "completed" when the dedicated IPI for this task is
received.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Diffstat (limited to 'arch/arm/include/asm/smp.h')
| -rw-r--r-- | arch/arm/include/asm/smp.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/include/asm/smp.h b/arch/arm/include/asm/smp.h index d3a22bebe6c..610ccf33f5e 100644 --- a/arch/arm/include/asm/smp.h +++ b/arch/arm/include/asm/smp.h @@ -81,6 +81,8 @@ extern void arch_send_call_function_single_ipi(int cpu); extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); extern void arch_send_wakeup_ipi_mask(const struct cpumask *mask); +extern int register_ipi_completion(struct completion *completion, int cpu); + struct smp_operations { #ifdef CONFIG_SMP /* |