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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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4
fs/xfs/linux-2.6/xfs_file.c
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@@ -46,7 +46,7 @@ static struct vm_operations_struct xfs_file_vm_ops;
static struct vm_operations_struct xfs_dmapi_file_vm_ops;
#endif
STATIC inline ssize_t
STATIC_INLINE ssize_t
__xfs_file_read(
struct kiocb *iocb,
const struct iovec *iov,
@@ -84,7 +84,7 @@ xfs_file_aio_read_invis(
return __xfs_file_read(iocb, iov, nr_segs, IO_ISAIO|IO_INVIS, pos);
}
STATIC inline ssize_t
STATIC_INLINE ssize_t
__xfs_file_write(
struct kiocb *iocb,
const struct iovec *iov,