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| author | Rusty Russell <rusty@rustcorp.com.au> | 2011-08-03 16:21:06 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-08-03 14:25:20 -1000 |
| commit | 88eca0207cf1574328c3ce8c3be537a9317261bb (patch) | |
| tree | 155b13f5df1e239fea2ad5512ef5b19865de4a9e /include | |
| parent | a7295898a1d2e501427f557111c2b4bdfc90b1ed (diff) | |
| download | lwn-88eca0207cf1574328c3ce8c3be537a9317261bb.tar.gz lwn-88eca0207cf1574328c3ce8c3be537a9317261bb.zip | |
ida: simplified functions for id allocation
The current hyper-optimized functions are overkill if you simply want to
allocate an id for a device. Create versions which use an internal
lock.
In followup patches, numerous drivers are converted to use this
interface.
Thanks to Tejun for feedback.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/idr.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/idr.h b/include/linux/idr.h index 13a801f3d028..255491cf522e 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -146,6 +146,10 @@ void ida_remove(struct ida *ida, int id); void ida_destroy(struct ida *ida); void ida_init(struct ida *ida); +int ida_simple_get(struct ida *ida, unsigned int start, unsigned int end, + gfp_t gfp_mask); +void ida_simple_remove(struct ida *ida, unsigned int id); + void __init idr_init_cache(void); #endif /* __IDR_H__ */ |