Un-inlining rwsem_down_failed_common() (two callsites) reduced
lib/rwsem.o on my Athlon, gcc 4.1.2 from 5935 to 5480 Bytes (455 Bytes saved).
I thus guess that reduced icache footprint (and better function caching)
is worth more than any function call overhead.
Compile-tested and run-tested on 2.6.18-rc4-mm3.
Signed-off-by: Andreas Mohr <[email protected]>
--- linux-2.6.18-rc4-mm3.orig/lib/rwsem.c 2006-08-22 21:09:55.000000000 +0200
+++ linux-2.6.18-rc4-mm3/lib/rwsem.c 2006-09-05 21:52:09.000000000 +0200
@@ -146,7 +146,7 @@
/*
* wait for a lock to be granted
*/
-static inline struct rw_semaphore *
+static struct rw_semaphore *
rwsem_down_failed_common(struct rw_semaphore *sem,
struct rwsem_waiter *waiter, signed long adjustment)
{
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]