From 95402b3829010fe1e208f44e4a158ccade88969a Mon Sep 17 00:00:00 2001 From: Gautham R Shenoy Date: Fri, 25 Jan 2008 21:08:02 +0100 Subject: cpu-hotplug: replace per-subsystem mutexes with get_online_cpus() This patch converts the known per-subsystem mutexes to get_online_cpus put_online_cpus. It also eliminates the CPU_LOCK_ACQUIRE and CPU_LOCK_RELEASE hotplug notification events. Signed-off-by: Gautham R Shenoy Signed-off-by: Ingo Molnar --- kernel/cpu.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'kernel/cpu.c') diff --git a/kernel/cpu.c b/kernel/cpu.c index b0c4152..e0d3a4f 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -218,7 +218,6 @@ static int _cpu_down(unsigned int cpu, int tasks_frozen) return -EINVAL; cpu_hotplug_begin(); - raw_notifier_call_chain(&cpu_chain, CPU_LOCK_ACQUIRE, hcpu); err = __raw_notifier_call_chain(&cpu_chain, CPU_DOWN_PREPARE | mod, hcpu, -1, &nr_calls); if (err == NOTIFY_BAD) { @@ -271,7 +270,6 @@ out_thread: out_allowed: set_cpus_allowed(current, old_allowed); out_release: - raw_notifier_call_chain(&cpu_chain, CPU_LOCK_RELEASE, hcpu); cpu_hotplug_done(); return err; } @@ -302,7 +300,6 @@ static int __cpuinit _cpu_up(unsigned int cpu, int tasks_frozen) return -EINVAL; cpu_hotplug_begin(); - raw_notifier_call_chain(&cpu_chain, CPU_LOCK_ACQUIRE, hcpu); ret = __raw_notifier_call_chain(&cpu_chain, CPU_UP_PREPARE | mod, hcpu, -1, &nr_calls); if (ret == NOTIFY_BAD) { @@ -326,7 +323,6 @@ out_notify: if (ret != 0) __raw_notifier_call_chain(&cpu_chain, CPU_UP_CANCELED | mod, hcpu, nr_calls, NULL); - raw_notifier_call_chain(&cpu_chain, CPU_LOCK_RELEASE, hcpu); cpu_hotplug_done(); return ret; -- cgit v1.1