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[XFS] Keep stack usage down for 4k stacks by using noinline.

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gcc-4.1 and more recent aggressively inline static functions which
increases XFS stack usage by ~15% in critical paths. Prevent this from
occurring by adding noinline to the STATIC definition.

Also uninline some functions that are too large to be inlined and were
causing problems with CONFIG_FORCED_INLINING=y.

Finally, clean up all the different users of inline, __inline and
__inline__ and put them under one STATIC_INLINE macro. For debug kernels
the STATIC_INLINE macro uninlines those functions.

SGI-PV: 957159
SGI-Modid: xfs-linux-melb:xfs-kern:27585a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: David Chatterton <chatz@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
This commit is contained in:
David Chinner
2007-02-10 18:34:56 +11:00
committed by Tim Shimmin
parent 5e6a07dfe4
commit 7989cb8ef5
23 changed files with 89 additions and 65 deletions
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2
fs/xfs/linux-2.6/xfs_vnode.c
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@@ -26,7 +26,7 @@ DEFINE_SPINLOCK(vnumber_lock);
*/
#define NVSYNC 37
#define vptosync(v) (&vsync[((unsigned long)v) % NVSYNC])
STATIC wait_queue_head_t vsync[NVSYNC];
static wait_queue_head_t vsync[NVSYNC];
void
vn_init(void)