commit c2558e0eba66b49993e619da66c95a50a97830a3
author Brian Gerst <brgerst@gmail.com> Mon Jan 19 00:38:59 2009 +0900
committer Tejun Heo <tj@kernel.org> Mon Jan 19 00:38:59 2009 +0900
tree 06c24e7ec0ab114da24e41e0b2107bb0cfe2d04e
parent e7a22c1ebcc1caa8178df1819d05128bb5b45ab9

x86-64: Move isidle from PDA to per-cpu.

tj: s/isidle/is_idle/

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

arch/x86/kernel/process_64.c

diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 4801289..4523ff8 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -61,6 +61,7 @@
 EXPORT_PER_CPU_SYMBOL(current_task);
 
 DEFINE_PER_CPU(unsigned long, old_rsp);
+static DEFINE_PER_CPU(unsigned char, is_idle);
 
 unsigned long kernel_thread_flags = CLONE_VM | CLONE_UNTRACED;
 
@@ -80,13 +81,13 @@
 
 void enter_idle(void)
 {
-	write_pda(isidle, 1);
+	percpu_write(is_idle, 1);
 	atomic_notifier_call_chain(&idle_notifier, IDLE_START, NULL);
 }
 
 static void __exit_idle(void)
 {
-	if (test_and_clear_bit_pda(0, isidle) == 0)
+	if (x86_test_and_clear_bit_percpu(0, is_idle) == 0)
 		return;
 	atomic_notifier_call_chain(&idle_notifier, IDLE_END, NULL);
 }