diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2013-10-24 20:30:18 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-12-11 21:12:17 +0000 |
| commit | d3bde2dcb4434ae9f905d9286e36feb59953f1e3 (patch) | |
| tree | 2ee48204db31dfb30b0edff2f572cf451a814c07 /arch/arm64/include/asm/cpu_ops.h | |
| parent | 5ad709f5d9cb351caf1be770d03f420bd88bf248 (diff) | |
arm64: add CPU_HOTPLUG infrastructure
This patch adds the basic infrastructure necessary to support
CPU_HOTPLUG on arm64, based on the arm implementation. Actual hotplug
support will depend on an implementation's cpu_operations (e.g. PSCI).
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 9327e2c6bb8cb0131b38a07847cd58c78dc095e9)
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'arch/arm64/include/asm/cpu_ops.h')
| -rw-r--r-- | arch/arm64/include/asm/cpu_ops.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/cpu_ops.h b/arch/arm64/include/asm/cpu_ops.h index 1a98dbfc4a5f..c4cdb5e5b73d 100644 --- a/arch/arm64/include/asm/cpu_ops.h +++ b/arch/arm64/include/asm/cpu_ops.h @@ -34,6 +34,11 @@ struct device_node; * @cpu_boot: Boots a cpu into the kernel. * @cpu_postboot: Optionally, perform any post-boot cleanup or necesary * synchronisation. Called from the cpu being booted. + * @cpu_disable: Prepares a cpu to die. May fail for some mechanism-specific + * reason, which will cause the hot unplug to be aborted. Called + * from the cpu to be killed. + * @cpu_die: Makes a cpu leave the kernel. Must not fail. Called from the + * cpu being killed. */ struct cpu_operations { const char *name; @@ -41,6 +46,10 @@ struct cpu_operations { int (*cpu_prepare)(unsigned int); int (*cpu_boot)(unsigned int); void (*cpu_postboot)(void); +#ifdef CONFIG_HOTPLUG_CPU + int (*cpu_disable)(unsigned int cpu); + void (*cpu_die)(unsigned int cpu); +#endif }; extern const struct cpu_operations *cpu_ops[NR_CPUS]; |