diff options
| author | Darren Hart <dvhltc@us.ibm.com> | 2009-03-12 00:55:59 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-12 11:20:57 +0100 |
| commit | 16f4993f4e9860715918efd4eeac928f8de1218b (patch) | |
| tree | d5416de0cd3df09700e58c8148f67d6963ba19e9 /kernel/futex.c | |
| parent | 5eb3dc62fc5986e85715041c23dcf3832812be4b (diff) | |
| download | lwn-16f4993f4e9860715918efd4eeac928f8de1218b.tar.gz lwn-16f4993f4e9860715918efd4eeac928f8de1218b.zip | |
futex: use current->time_slack_ns for rt tasks too
RT tasks should set their timer slack to 0 on their own. This
patch removes the 'if (rt_task()) slack = 0;' block in
futex_wait.
Build and boot tested on a 4 way Intel x86_64 workstation.
Passes basic pthread_mutex and PI tests out of
ltp/testcases/realtime.
Signed-off-by: Darren Hart <dvhltc@us.ibm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Arjan van de Ven <arjan@linux.intel.com>
LKML-Reference: <20090312075559.9856.28822.stgit@Aeon>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/futex.c')
| -rw-r--r-- | kernel/futex.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/kernel/futex.c b/kernel/futex.c index e149545c5cea..6579912ee70c 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -1253,16 +1253,13 @@ retry: if (!abs_time) schedule(); else { - unsigned long slack; - slack = current->timer_slack_ns; - if (rt_task(current)) - slack = 0; hrtimer_init_on_stack(&t.timer, clockrt ? CLOCK_REALTIME : CLOCK_MONOTONIC, HRTIMER_MODE_ABS); hrtimer_init_sleeper(&t, current); - hrtimer_set_expires_range_ns(&t.timer, *abs_time, slack); + hrtimer_set_expires_range_ns(&t.timer, *abs_time, + current->timer_slack_ns); hrtimer_start_expires(&t.timer, HRTIMER_MODE_ABS); if (!hrtimer_active(&t.timer)) |