Commit-ID: 39d8ff68909394e9f71fd3184833203f0bce2498
Gitweb: http://git.kernel.org/tip/39d8ff68909394e9f71fd3184833203f0bce2498
Author: "Rusty Russell" <rusty@xxxxxxxxxxxxxxx>
AuthorDate: Thu, 12 Mar 2009 14:45:46 +1030
Commit: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
CommitDate: Thu, 12 Mar 2009 14:45:46 +1030
cpumask: convert c1e_mask in arch/x86/kernel/process.c to cpumask_var_t.
Impact: reduce kernel size when CONFIG_CPUMASK_OFFSTACK=y
Simple conversion.
Signed-off-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
---
arch/x86/kernel/process.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 6afa523..cad5431 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -474,12 +474,12 @@ static int __cpuinit check_c1e_idle(const struct cpuinfo_x86 *c)
return 1;
}
-static cpumask_t c1e_mask = CPU_MASK_NONE;
+static cpumask_var_t c1e_mask;
static int c1e_detected;
void c1e_remove_cpu(int cpu)
{
- cpu_clear(cpu, c1e_mask);
+ cpumask_clear_cpu(cpu, c1e_mask);
}
/*
@@ -508,8 +508,8 @@ static void c1e_idle(void)
if (c1e_detected) {
int cpu = smp_processor_id();
- if (!cpu_isset(cpu, c1e_mask)) {
- cpu_set(cpu, c1e_mask);
+ if (!cpumask_test_cpu(cpu, c1e_mask)) {
+ cpumask_set_cpu(cpu, c1e_mask);
/*
* Force broadcast so ACPI can not interfere. Needs
* to run with interrupts enabled as it uses
@@ -556,6 +556,8 @@ void __cpuinit select_idle_routine(const struct cpuinfo_x86 *c)
pm_idle = mwait_idle;
} else if (check_c1e_idle(c)) {
printk(KERN_INFO "using C1E aware idle routine\n");
+ alloc_cpumask_var(&c1e_mask, GFP_KERNEL);
+ cpumask_clear(c1e_mask);
pm_idle = c1e_idle;
} else
pm_idle = default_idle;
--
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