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authorTejun Heo <tj@kernel.org>2010-06-29 10:07:14 +0200
committerTejun Heo <tj@kernel.org>2010-06-29 10:07:14 +0200
commitb71ab8c2025caef8db719aa41af0ed735dc543cd (patch)
tree8cc2c6164acf5fe82e8d8d05924590cb80fe088d /arch/ia64/kernel/smpboot.c
parente22bee782b3b00bd4534ae9b1c5fb2e8e6573c5c (diff)
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workqueue: increase max_active of keventd and kill current_is_keventd()
Define WQ_MAX_ACTIVE and create keventd with max_active set to half of it which means that keventd now can process upto WQ_MAX_ACTIVE / 2 - 1 works concurrently. Unless some combination can result in dependency loop longer than max_active, deadlock won't happen and thus it's unnecessary to check whether current_is_keventd() before trying to schedule a work. Kill current_is_keventd(). (Lockdep annotations are broken. We need lock_map_acquire_read_norecurse()) Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Oleg Nesterov <oleg@redhat.com>
Diffstat (limited to 'arch/ia64/kernel/smpboot.c')
-rw-r--r--arch/ia64/kernel/smpboot.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/ia64/kernel/smpboot.c b/arch/ia64/kernel/smpboot.c
index 6a1380e90f8..99dcc85193c 100644
--- a/arch/ia64/kernel/smpboot.c
+++ b/arch/ia64/kernel/smpboot.c
@@ -519,7 +519,7 @@ do_boot_cpu (int sapicid, int cpu)
/*
* We can't use kernel_thread since we must avoid to reschedule the child.
*/
- if (!keventd_up() || current_is_keventd())
+ if (!keventd_up())
c_idle.work.func(&c_idle.work);
else {
schedule_work(&c_idle.work);