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| author | Ingo Molnar <mingo@elte.hu> | 2010-01-29 09:24:57 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-01-29 10:36:22 +0100 |
| commit | ae7f6711d6231c9ba54feb5ba9856c3775e482f8 (patch) | |
| tree | 89070c82204b2503348e4fd6c51d25a169375545 /block/cfq-iosched.c | |
| parent | perf session: Create kernel maps in the constructor (diff) | |
| parent | hw_breakpoints: Release the bp slot if arch_validate_hwbkpt_settings() fails. (diff) | |
| download | linux-ae7f6711d6231c9ba54feb5ba9856c3775e482f8.tar.xz linux-ae7f6711d6231c9ba54feb5ba9856c3775e482f8.zip | |
Merge branch 'perf/urgent' into perf/core
Merge reason: We want to queue up a dependent patch. Also update to
later -rc's.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'block/cfq-iosched.c')
| -rw-r--r-- | block/cfq-iosched.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 918c7fd9aeb1..ee130f14d1fc 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -3077,6 +3077,12 @@ cfq_should_preempt(struct cfq_data *cfqd, struct cfq_queue *new_cfqq, return true; /* + * Don't allow a non-RT request to preempt an ongoing RT cfqq timeslice. + */ + if (cfq_class_rt(cfqq) && !cfq_class_rt(new_cfqq)) + return false; + + /* * if the new request is sync, but the currently running queue is * not, let the sync request have priority. */ |