xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge branch 'pm-cpuidle'

Browse Source 
* pm-cpuidle:
  intel_idle: Graceful probe failure when MWAIT is disabled
  cpuidle: Avoid assignment in if () argument
  cpuidle: Clean up cpuidle_enable_device() error handling a bit
  cpuidle: ladder: Add per CPU PM QoS resume latency support
  ARM: cpuidle: Refactor rollback operations if init fails
  ARM: cpuidle: Correct driver unregistration if init fails
  intel_idle: replace conditionals with static_cpu_has(X86_FEATURE_ARAT)
  cpuidle: fix broadcast control when broadcast can not be entered

 Conflicts:
	drivers/idle/intel_idle.c
This commit is contained in:
Rafael J. Wysocki
2017-11-13 01:34:14 +01:00
parent 4762573b93 a4c447533a
commit 622ade3a2f
4 changed files with 122 additions and 75 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/idle/intel_idle.c
View File

@@ -913,10 +913,9 @@ static __cpuidle int intel_idle(struct cpuidle_device *dev,
struct cpuidle_state *state = &drv->states[index];
unsigned long eax = flg2MWAIT(state->flags);
unsigned int cstate;
bool uninitialized_var(tick);
int cpu = smp_processor_id();
cstate = (((eax) >> MWAIT_SUBSTATE_SIZE) & MWAIT_CSTATE_MASK) + 1;
/*
* leave_mm() to avoid costly and often unnecessary wakeups
* for flushing the user TLB's associated with the active mm.
@@ -924,12 +923,19 @@ static __cpuidle int intel_idle(struct cpuidle_device *dev,
if (state->flags & CPUIDLE_FLAG_TLB_FLUSHED)
leave_mm(cpu);
if (!(lapic_timer_reliable_states & (1 << (cstate))))
tick_broadcast_enter();
if (!static_cpu_has(X86_FEATURE_ARAT)) {
cstate = (((eax) >> MWAIT_SUBSTATE_SIZE) &
MWAIT_CSTATE_MASK) + 1;
tick = false;
if (!(lapic_timer_reliable_states & (1 << (cstate)))) {
tick = true;
tick_broadcast_enter();
}
}
mwait_idle_with_hints(eax, ecx);
if (!(lapic_timer_reliable_states & (1 << (cstate))))
if (!static_cpu_has(X86_FEATURE_ARAT) && tick)
tick_broadcast_exit();
return index;
@@ -1061,7 +1067,7 @@ static const struct idle_cpu idle_cpu_dnv = {
};
#define ICPU(model, cpu) \
{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu }
{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (unsigned long)&cpu }
static const struct x86_cpu_id intel_idle_ids[] __initconst = {
ICPU(INTEL_FAM6_NEHALEM_EP, idle_cpu_nehalem),
@@ -1125,6 +1131,11 @@ static int __init intel_idle_probe(void)
return -ENODEV;
}
if (!boot_cpu_has(X86_FEATURE_MWAIT)) {
pr_debug("Please enable MWAIT in BIOS SETUP\n");
return -ENODEV;
}
if (boot_cpu_data.cpuid_level < CPUID_MWAIT_LEAF)
return -ENODEV;