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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-12-17 13:16:30 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-12-17 13:22:45 +0100 |
| commit | e1781538cf5c870ab696e9b8f0a5c498d3900f2f (patch) | |
| tree | 42027696b4bc241194299b29cef2ae814b087acd /include/linux/sched.h | |
| parent | 464763cf1c6df632dccc8f2f4c7e50163154a2c0 (diff) | |
| download | linux-e1781538cf5c870ab696e9b8f0a5c498d3900f2f.tar.gz linux-e1781538cf5c870ab696e9b8f0a5c498d3900f2f.tar.bz2 linux-e1781538cf5c870ab696e9b8f0a5c498d3900f2f.zip | |
sched: Assert task state bits at build time
Since everybody is lazy and prone to forgetting things, make the
compiler help us a bit.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20091217121830.060186433@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 94858df38a87..37543876ddf5 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -192,9 +192,13 @@ print_cfs_rq(struct seq_file *m, int cpu, struct cfs_rq *cfs_rq) #define TASK_DEAD 64 #define TASK_WAKEKILL 128 #define TASK_WAKING 256 +#define TASK_STATE_MAX 512 #define TASK_STATE_TO_CHAR_STR "RSDTtZXxKW" +extern char ___assert_task_state[1 - 2*!!( + sizeof(TASK_STATE_TO_CHAR_STR)-1 != ilog2(TASK_STATE_MAX)+1)]; + /* Convenience macros for the sake of set_task_state */ #define TASK_KILLABLE (TASK_WAKEKILL | TASK_UNINTERRUPTIBLE) #define TASK_STOPPED (TASK_WAKEKILL | __TASK_STOPPED) |