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arm64: kernel: rename __cpu_suspend to keep it aligned with arm 

This patch renames __cpu_suspend to cpu_suspend so that it's aligned
with ARM32. It also removes the redundant wrapper created.

This is in preparation to implement generic PSCI system suspend using
the cpu_{suspend,resume} which now has the same interface on both ARM
and ARM64.

Cc: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Ashwin Chaugule <ashwin.chaugule@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Sudeep Holla 2015-06-18 15:41:32 +01:00 committed by Catalin Marinas
parent 4e2ee96a63
commit af391b15f7
5 changed files with 9 additions and 13 deletions
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8
arch/arm64/include/asm/cpuidle.h
View File

@ -5,20 +5,16 @@
#ifdef CONFIG_CPU_IDLE
extern int arm_cpuidle_init(unsigned int cpu);
extern int cpu_suspend(unsigned long arg);
extern int arm_cpuidle_suspend(int index);
#else
static inline int arm_cpuidle_init(unsigned int cpu)
{
return -EOPNOTSUPP;
}
static inline int cpu_suspend(unsigned long arg)
static inline int arm_cpuidle_suspend(int index)
{
return -EOPNOTSUPP;
}
#endif
static inline int arm_cpuidle_suspend(int index)
{
return cpu_suspend(index);
}
#endif

2
arch/arm64/include/asm/suspend.h
View File

@ -21,6 +21,6 @@ struct sleep_save_sp {
phys_addr_t save_ptr_stash_phys;
};
extern int __cpu_suspend(unsigned long arg, int (*fn)(unsigned long));
extern int cpu_suspend(unsigned long arg, int (*fn)(unsigned long));
extern void cpu_resume(void);
#endif

4
arch/arm64/kernel/cpuidle.c
View File

@ -32,7 +32,7 @@ int arm_cpuidle_init(unsigned int cpu)
* Return: 0 on success, -EOPNOTSUPP if CPU suspend hook not initialized, CPU
* operations back-end error code otherwise.
*/
int cpu_suspend(unsigned long arg)
int arm_cpuidle_suspend(int index)
{
int cpu = smp_processor_id();
@ -42,5 +42,5 @@ int cpu_suspend(unsigned long arg)
*/
if (!cpu_ops[cpu] || !cpu_ops[cpu]->cpu_suspend)
return -EOPNOTSUPP;
return cpu_ops[cpu]->cpu_suspend(arg);
return cpu_ops[cpu]->cpu_suspend(index);
}

2
arch/arm64/kernel/psci.c
View File

@ -574,7 +574,7 @@ static int __maybe_unused cpu_psci_cpu_suspend(unsigned long index)
if (!psci_power_state_loses_context(state[index - 1]))
ret = psci_ops.cpu_suspend(state[index - 1], 0);
else
ret = __cpu_suspend(index, psci_suspend_finisher);
ret = cpu_suspend(index, psci_suspend_finisher);
return ret;
}

6
arch/arm64/kernel/suspend.c
View File

@ -51,13 +51,13 @@ void __init cpu_suspend_set_dbg_restorer(void (*hw_bp_restore)(void *))
}
/*
* __cpu_suspend
* cpu_suspend
*
* arg: argument to pass to the finisher function
* fn: finisher function pointer
*
*/
int __cpu_suspend(unsigned long arg, int (*fn)(unsigned long))
int cpu_suspend(unsigned long arg, int (*fn)(unsigned long))
{
struct mm_struct *mm = current->active_mm;
int ret;
@ -82,7 +82,7 @@ int __cpu_suspend(unsigned long arg, int (*fn)(unsigned long))
* We are resuming from reset with TTBR0_EL1 set to the
* idmap to enable the MMU; restore the active_mm mappings in
* TTBR0_EL1 unless the active_mm == &init_mm, in which case
* the thread entered __cpu_suspend with TTBR0_EL1 set to
* the thread entered cpu_suspend with TTBR0_EL1 set to
* reserved TTBR0 page tables and should be restored as such.
*/
if (mm == &init_mm)