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(parent: f187851) | patch
intel_idle: replace conditionals with static_cpu_has(X86_FEATURE_ARAT)
authorJason Baron <jbaron@akamai.com>
Fri, 6 Oct 2017 17:19:45 +0000 (13:19 -0400)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Wed, 11 Oct 2017 00:02:16 +0000 (02:02 +0200)
commit0563bb7ba67eec7a87a9ccc04b80bb59de26c319
treedd90a616853afceca5532c2359a683a25206f38dtree | snapshot
parentf187851b9b4a76952b1158b86434563dd2031103commit | diff
intel_idle: replace conditionals with static_cpu_has(X86_FEATURE_ARAT)

If the 'arat' cpu flag is set, then the conditionals in intel_idle() that
guard calling tick_broadcast_enter()/exit() will never be true. Use
static_cpu_has(X86_FEATURE_ARAT) to create a fast path to replace
the conditional.

Signed-off-by: Jason Baron <jbaron@akamai.com>
Acked-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/idle/intel_idle.c diff | blob | history
Domain: System / Kernel;