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| author | Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> | 2007-04-01 23:49:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-02 10:06:08 -0700 |
| commit | 10fa1155a2c3282f421a74fedfad1957e8bdc86c (patch) | |
| tree | 21ec69d27c0d5e239f9c0eed531dbcdc0f602af2 /Documentation/robust-futexes.txt | |
| parent | 05565b65a5309e3e5c86db1975b57f75661bee8f (diff) | |
| download | op-kernel-dev-10fa1155a2c3282f421a74fedfad1957e8bdc86c.zip op-kernel-dev-10fa1155a2c3282f421a74fedfad1957e8bdc86c.tar.gz | |
[PATCH] uml: fix unreasonably long udelay
Currently we have a confused udelay implementation.
* __const_udelay does not accept usecs but xloops in i386 and x86_64
* our implementation requires usecs as arg
* it gets a xloops count when called by asm/arch/delay.h
Bugs related to this (extremely long shutdown times) where reported by some
x86_64 users, especially using Device Mapper.
To hit this bug, a compile-time constant time parameter must be passed -
that's why UML seems to work most times. Fix this with a simple udelay
implementation.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/robust-futexes.txt')
0 files changed, 0 insertions, 0 deletions
