diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-06-28 20:42:16 +0200 |
|---|---|---|
| committer | Clark Williams <williams@redhat.com> | 2012-02-15 10:32:53 -0600 |
| commit | 99aa5f914d497afbb954f97e492e9bda29f8e832 (patch) | |
| tree | 13ee6f7da7a73d26da952adfc8a3dd0b3ea2d92c | |
| parent | 9a9ded51044ea43128a49626748d26d45eee8ed6 (diff) | |
local-vars-migrate-disable.patch
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | include/linux/percpu.h | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/include/linux/percpu.h b/include/linux/percpu.h index 3941ea401f3d..58163cd6cca1 100644 --- a/include/linux/percpu.h +++ b/include/linux/percpu.h @@ -48,10 +48,30 @@ preempt_enable(); \ } while (0) -#define get_local_var(var) get_cpu_var(var) -#define put_local_var(var) put_cpu_var(var) -#define get_local_ptr(var) get_cpu_ptr(var) -#define put_local_ptr(var) put_cpu_ptr(var) +#ifndef CONFIG_PREEMPT_RT_FULL +# define get_local_var(var) get_cpu_var(var) +# define put_local_var(var) put_cpu_var(var) +# define get_local_ptr(var) get_cpu_ptr(var) +# define put_local_ptr(var) put_cpu_ptr(var) +#else +# define get_local_var(var) (*({ \ + migrate_disable(); \ + &__get_cpu_var(var); })) + +# define put_local_var(var) do { \ + (void)&(var); \ + migrate_enable(); \ +} while (0) + +# define get_local_ptr(var) ({ \ + migrate_disable(); \ + this_cpu_ptr(var); }) + +# define put_local_ptr(var) do { \ + (void)(var); \ + migrate_enable(); \ +} while (0) +#endif /* minimum unit size, also is the maximum supported allocation size */ #define PCPU_MIN_UNIT_SIZE PFN_ALIGN(32 << 10) |