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| author | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-30 02:18:21 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-30 02:18:21 +0400 |
| commit | 4a8342d233a39ee582e9f7260e12d2f5fd194a05 (patch) | |
| tree | cf0972e1deec828977794cc300597bb448535d4c /include | |
| parent | aa55a08687059aa169d10a313c41f238c2070488 (diff) | |
| download | linux-4a8342d233a39ee582e9f7260e12d2f5fd194a05.tar.xz | |
Revert task flag re-ordering, add comments
Roland points out that the flags end up having non-obvious dependencies
elsewhere, so revert aa55a08687059aa169d10a313c41f238c2070488 and add
some comments about why things are as they are.
We'll just have to fix up the broken comparisons. Roland has a patch.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sched.h | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index afe6c61f13e5..c3ba31f210a9 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -107,14 +107,26 @@ extern unsigned long nr_iowait(void); #include <asm/processor.h> +/* + * Task state bitmask. NOTE! These bits are also + * encoded in fs/proc/array.c: get_task_state(). + * + * We have two separate sets of flags: task->state + * is about runnability, while task->exit_state are + * about the task exiting. Confusing, but this way + * modifying one set can't modify the other one by + * mistake. + */ #define TASK_RUNNING 0 #define TASK_INTERRUPTIBLE 1 #define TASK_UNINTERRUPTIBLE 2 -#define TASK_NONINTERACTIVE 4 -#define TASK_STOPPED 8 -#define TASK_TRACED 16 -#define EXIT_ZOMBIE 32 -#define EXIT_DEAD 64 +#define TASK_STOPPED 4 +#define TASK_TRACED 8 +/* in tsk->exit_state */ +#define EXIT_ZOMBIE 16 +#define EXIT_DEAD 32 +/* in tsk->state again */ +#define TASK_NONINTERACTIVE 64 #define __set_task_state(tsk, state_value) \ do { (tsk)->state = (state_value); } while (0) |