From 662287558f37ed46e0612a34d5e58b89f6af3a48 Mon Sep 17 00:00:00 2001 From: Vikram Mulukutla Date: Mon, 13 Oct 2014 21:29:33 -0700 Subject: idle: Implement a per-cpu idle-polling mode cpu_idle_poll_ctrl provides a way of switching the idle thread to use cpu_idle_poll instead of the arch specific lower power mode callbacks (arch_cpu_idle). cpu_idle_poll spins on a flag in a tight loop with interrupts enabled. In some cases it may be useful to enter the tight loop polling mode only on a particular CPU. This allows other CPUs to continue using the arch specific low power mode callbacks. Provide an API that allows this. Change-Id: I7c47c3590eb63345996a1c780faa79dbd1d9fdb4 Signed-off-by: Vikram Mulukutla --- include/linux/cpu.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux') diff --git a/include/linux/cpu.h b/include/linux/cpu.h index 963eaa1ca..41ed83945 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -279,6 +279,7 @@ void cpu_startup_entry(enum cpuhp_state state); void cpu_idle(void); void cpu_idle_poll_ctrl(bool enable); +void per_cpu_idle_poll_ctrl(int cpu, bool enable); void arch_cpu_idle(void); void arch_cpu_idle_prepare(void); -- cgit v1.2.3