mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-13 20:33:15 +00:00
intel_idle: simplify test for leave_mm()
A run-time test to invoke leave_mm() for the deepest supported C-state is redundant, since the appropriate C-states already have flags with CPUIDLE_FLAG_TLB_FLUSHED set. Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
parent
cd07202cc8
commit
c8381cc3d8
@ -186,13 +186,10 @@ static int intel_idle(struct cpuidle_device *dev, struct cpuidle_state *state)
|
||||
local_irq_disable();
|
||||
|
||||
/*
|
||||
* If the state flag indicates that the TLB will be flushed or if this
|
||||
* is the deepest c-state supported, do a voluntary leave mm to avoid
|
||||
* costly and mostly unnecessary wakeups for flushing the user TLB's
|
||||
* associated with the active mm.
|
||||
* leave_mm() to avoid costly and often unnecessary wakeups
|
||||
* for flushing the user TLB's associated with the active mm.
|
||||
*/
|
||||
if (state->flags & CPUIDLE_FLAG_TLB_FLUSHED ||
|
||||
(&dev->states[dev->state_count - 1] == state))
|
||||
if (state->flags & CPUIDLE_FLAG_TLB_FLUSHED)
|
||||
leave_mm(cpu);
|
||||
|
||||
if (!(lapic_timer_reliable_states & (1 << (cstate))))
|
||||
|
Loading…
Reference in New Issue
Block a user