diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-10-01 11:20:33 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-10-01 11:20:48 +0200 |
| commit | 0aa73ba1c4e1ad1d51a29e0df95ccd9f746918b6 (patch) | |
| tree | f0714ddcd02812b4fbe3b5405df9e4068f5587e2 /fs/select.c | |
| parent | 925936ebf35a95c290e010b784c962164e6728f3 (diff) | |
| parent | 33974093c024f08caadd2fc71a83bd811ed1831d (diff) | |
Merge branch 'tracing/urgent' into tracing/core
Merge reason: Pick up latest fixes and update to latest upstream.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs/select.c')
| -rw-r--r-- | fs/select.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/fs/select.c b/fs/select.c index 8084834e123e..a201fc370223 100644 --- a/fs/select.c +++ b/fs/select.c @@ -41,22 +41,28 @@ * better solutions.. */ +#define MAX_SLACK (100 * NSEC_PER_MSEC) + static long __estimate_accuracy(struct timespec *tv) { long slack; int divfactor = 1000; + if (tv->tv_sec < 0) + return 0; + if (task_nice(current) > 0) divfactor = divfactor / 5; + if (tv->tv_sec > MAX_SLACK / (NSEC_PER_SEC/divfactor)) + return MAX_SLACK; + slack = tv->tv_nsec / divfactor; slack += tv->tv_sec * (NSEC_PER_SEC/divfactor); - if (slack > 100 * NSEC_PER_MSEC) - slack = 100 * NSEC_PER_MSEC; + if (slack > MAX_SLACK) + return MAX_SLACK; - if (slack < 0) - slack = 0; return slack; } |