diff options
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index ccd0c6f24f2c..d7ca410ace93 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -59,6 +59,10 @@ struct sched_param { #define SCHED_ATTR_SIZE_VER0 48 /* sizeof first published struct */ +#define VMACACHE_BITS 2 +#define VMACACHE_SIZE (1U << VMACACHE_BITS) +#define VMACACHE_MASK (VMACACHE_SIZE - 1) + /* * Extended scheduling parameters data structure. * @@ -1228,6 +1232,9 @@ struct task_struct { #ifdef CONFIG_COMPAT_BRK unsigned brk_randomized:1; #endif + /* per-thread vma caching */ + u32 vmacache_seqnum; + struct vm_area_struct *vmacache[VMACACHE_SIZE]; #if defined(SPLIT_RSS_COUNTING) struct task_rss_stat rss_stat; #endif |