diff options
| author | Alexey Dobriyan <adobriyan@sw.ru> | 2007-10-16 23:30:26 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-17 08:43:01 -0700 |
| commit | 18796aa00243a594a2bd6733f1360aa38c3cd8f4 (patch) | |
| tree | 2a7ae5f90d87e4bd98f5de11bfe0ec4caed16e31 | |
| parent | f7a75f0a40073601a0fb509290019d5f3f32b94b (diff) | |
| download | blackbird-op-linux-18796aa00243a594a2bd6733f1360aa38c3cd8f4.tar.gz blackbird-op-linux-18796aa00243a594a2bd6733f1360aa38c3cd8f4.zip | |
task_struct: move ->fpu_counter and ->oomkilladj
There is nice 2 byte hole after struct task_struct::ioprio field
into which we can put two 1-byte fields: ->fpu_counter and ->oomkilladj.
Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Acked-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/sched.h | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 884699fa8c1f..774cb435c7d8 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -918,6 +918,16 @@ struct task_struct { #endif unsigned short ioprio; + /* + * fpu_counter contains the number of consecutive context switches + * that the FPU is used. If this is over a threshold, the lazy fpu + * saving becomes unlazy to save the trap. This is an unsigned char + * so that after 256 times the counter wraps and the behavior turns + * lazy again; this to deal with bursty apps that only use FPU for + * a short time + */ + unsigned char fpu_counter; + s8 oomkilladj; /* OOM kill score adjustment (bit shift). */ #ifdef CONFIG_BLK_DEV_IO_TRACE unsigned int btrace_seq; #endif @@ -1003,16 +1013,6 @@ struct task_struct { struct key *thread_keyring; /* keyring private to this thread */ unsigned char jit_keyring; /* default keyring to attach requested keys to */ #endif - /* - * fpu_counter contains the number of consecutive context switches - * that the FPU is used. If this is over a threshold, the lazy fpu - * saving becomes unlazy to save the trap. This is an unsigned char - * so that after 256 times the counter wraps and the behavior turns - * lazy again; this to deal with bursty apps that only use FPU for - * a short time - */ - unsigned char fpu_counter; - s8 oomkilladj; /* OOM kill score adjustment (bit shift). */ char comm[TASK_COMM_LEN]; /* executable name excluding path - access with [gs]et_task_comm (which lock it with task_lock()) |
