diff options
| author | Ingo Molnar <mingo@elte.hu> | 2006-02-07 15:58:54 -0500 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-07 19:12:33 -0500 |
| commit | e0a602963485a2f109ae1521c0c55507304c63ed (patch) | |
| tree | 38900590f1d4f129cfd8748949ff62f7d3296aee /drivers/char/moxa.c | |
| parent | 8519fb30e438f8088b71a94a7d5a660a814d3872 (diff) | |
[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 'drivers/char/moxa.c')
0 files changed, 0 insertions, 0 deletions