diff options
author | Thomas Pfaff <[email protected]> | 2013-10-11 13:00:40 +0200 |
---|---|---|
committer | Thomas Gleixner <[email protected]> | 2013-10-28 09:50:42 +0100 |
commit | bbfe65c219c638e19f1da5adab1005b2d68ca810 (patch) | |
tree | 785b809ad6426f779a3569887a7f7d7fe9cc705e | |
parent | fd2f3b7ee1cf4b5fa77659c5ed4aa3cf5d1b3731 (diff) |
genirq: Set the irq thread policy without checking CAP_SYS_NICE
In commit ee23871389 ("genirq: Set irq thread to RT priority on
creation") we moved the assigment of the thread's priority from the
thread's function into __setup_irq(). That function may run in user
context for instance if the user opens an UART node and then driver
calls requests in the ->open() callback. That user may not have
CAP_SYS_NICE and so the irq thread won't run with the SCHED_OTHER
policy.
This patch uses sched_setscheduler_nocheck() so we omit the CAP_SYS_NICE
check which is otherwise required for the SCHED_OTHER policy.
[bigeasy: Rewrite the changelog]
Signed-off-by: Thomas Pfaff <[email protected]>
Cc: Ivo Sieben <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
-rw-r--r-- | kernel/irq/manage.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 514bcfd855a8..3e59f951d42f 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -956,7 +956,7 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new) goto out_mput; } - sched_setscheduler(t, SCHED_FIFO, ¶m); + sched_setscheduler_nocheck(t, SCHED_FIFO, ¶m); /* * We keep the reference to the task struct even if |