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| author | Johannes Berg <johannes@sipsolutions.net> | 2008-07-08 19:00:18 +0200 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-07-22 19:24:29 +1000 |
| commit | df648c9fbebb4de50e7a6e76cc253c7cb0421f9b (patch) | |
| tree | 909e31ce61020e65b45f2c0caef3492b9a376b4a /include/linux/kmod.h | |
| parent | a81792f668c20540c336af4242ba1400763eb14f (diff) | |
| download | lwn-df648c9fbebb4de50e7a6e76cc253c7cb0421f9b.tar.gz lwn-df648c9fbebb4de50e7a6e76cc253c7cb0421f9b.zip | |
rework try_then_request_module to do less in non-modular kernels
This reworks try_then_request_module to only invoke the "lookup"
function "x" once when the kernel is not modular.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'include/linux/kmod.h')
| -rw-r--r-- | include/linux/kmod.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/kmod.h b/include/linux/kmod.h index 5dc13848891b..9bdb28d6660f 100644 --- a/include/linux/kmod.h +++ b/include/linux/kmod.h @@ -29,11 +29,12 @@ /* modprobe exit status on success, -ve on error. Return value * usually useless though. */ extern int request_module(const char * name, ...) __attribute__ ((format (printf, 1, 2))); +#define try_then_request_module(x, mod...) ((x) ?: (request_module(mod), (x))) #else static inline int request_module(const char * name, ...) { return -ENOSYS; } +#define try_then_request_module(x, mod...) (x) #endif -#define try_then_request_module(x, mod...) ((x) ?: (request_module(mod), (x))) struct key; struct file; |