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| author | Siddha, Suresh B <suresh.b.siddha@intel.com> | 2007-05-08 09:22:47 -0700 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2007-05-08 10:01:25 -0700 |
| commit | bb8416bf8b93d88e23cbbfde962ef85acda5bd5f (patch) | |
| tree | 50b2f20f3fda534027d0fba0fa9e0eac28bb3f48 | |
| parent | 9d1d4cc89f3f6952978d37c29607c2d89d350767 (diff) | |
| download | kernel_samsung_smdk4412-bb8416bf8b93d88e23cbbfde962ef85acda5bd5f.zip kernel_samsung_smdk4412-bb8416bf8b93d88e23cbbfde962ef85acda5bd5f.tar.gz kernel_samsung_smdk4412-bb8416bf8b93d88e23cbbfde962ef85acda5bd5f.tar.bz2 | |
[IA64] save and restore cpus_allowed in cpu_idle_wait
Save and Restore the task's cpus_allowed mask, across the set_cpus_allowed()
in cpu_idle_wait(). Without this, we will endup corrupting task's cpu affinity.
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
| -rw-r--r-- | arch/ia64/kernel/process.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c index ae96d41..cba6ac3 100644 --- a/arch/ia64/kernel/process.c +++ b/arch/ia64/kernel/process.c @@ -237,6 +237,7 @@ void cpu_idle_wait(void) { unsigned int cpu, this_cpu = get_cpu(); cpumask_t map; + cpumask_t tmp = current->cpus_allowed; set_cpus_allowed(current, cpumask_of_cpu(this_cpu)); put_cpu(); @@ -258,6 +259,7 @@ void cpu_idle_wait(void) } cpus_and(map, map, cpu_online_map); } while (!cpus_empty(map)); + set_cpus_allowed(current, tmp); } EXPORT_SYMBOL_GPL(cpu_idle_wait); |