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| author | Brian Gerst <brgerst@gmail.com> | 2009-01-19 00:38:59 +0900 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-01-19 00:38:59 +0900 |
| commit | c2558e0eba66b49993e619da66c95a50a97830a3 (patch) | |
| tree | 06c24e7ec0ab114da24e41e0b2107bb0cfe2d04e | |
| parent | e7a22c1ebcc1caa8178df1819d05128bb5b45ab9 (diff) | |
| download | linux-c2558e0eba66b49993e619da66c95a50a97830a3.tar.gz linux-c2558e0eba66b49993e619da66c95a50a97830a3.tar.bz2 linux-c2558e0eba66b49993e619da66c95a50a97830a3.zip | |
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>
| -rw-r--r-- | arch/x86/include/asm/pda.h | 1 | ||||
| -rw-r--r-- | arch/x86/kernel/process_64.c | 5 |
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/include/asm/pda.h b/arch/x86/include/asm/pda.h index b30ef6bddc43..c31ca048a901 100644 --- a/arch/x86/include/asm/pda.h +++ b/arch/x86/include/asm/pda.h @@ -23,7 +23,6 @@ struct x8664_pda { offset 40!!! */ #endif short in_bootmem; /* pda lives in bootmem */ - short isidle; } ____cacheline_aligned_in_smp; DECLARE_PER_CPU(struct x8664_pda, __pda); diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 480128918926..4523ff88a69d 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -61,6 +61,7 @@ DEFINE_PER_CPU(struct task_struct *, current_task) = &init_task; 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 @@ EXPORT_SYMBOL_GPL(idle_notifier_unregister); 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); } |