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| author |   Ingo Molnar <mingo@elte.hu> | 2006-02-07 12:58:54 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-07 16:12:33 -0800 |
| commit | e0a602963485a2f109ae1521c0c55507304c63ed (patch) | |
| tree | 38900590f1d4f129cfd8748949ff62f7d3296aee /Documentation | |
| parent | [PATCH] mm: compound release fix (diff) | |
| download | linux-dev-e0a602963485a2f109ae1521c0c55507304c63ed.tar.xz linux-dev-e0a602963485a2f109ae1521c0c55507304c63ed.zip | |
[PATCH] Fix spinlock debugging delays to not time out too early
The spinlock-debug wait-loop was using loops_per_jiffy to detect too long
spinlock waits - but on fast CPUs this led to a way too fast timeout and false
messages.
The fix is to include a __delay(1) call in the loop, to correctly approximate
the intended delay timeout of 1 second. The code assumes that every
architecture implements __delay(1) to last around 1/(loops_per_jiffy*HZ)
seconds.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions