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Only print "bad: scheduling from the idle thread" warning once.

This commit is contained in:
Dave Jones 2013-03-21 10:49:36 -04:00
parent 876ede3c3a
commit 4093611836
2 changed files with 25 additions and 1 deletions
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19
debug-idle-sched-warn-once.patch Normal file
View File

@ -0,0 +1,19 @@
Instead of spewing this over and over, and scrolling useful info
off the screen, just print it once.
--- linux-3.9.0-0.rc3.git0.2.fc19.x86_64/kernel/sched/idle_task.c~ 2013-03-21 10:44:17.935087323 -0400
+++ linux-3.9.0-0.rc3.git0.2.fc19.x86_64/kernel/sched/idle_task.c 2013-03-21 10:44:41.936092782 -0400
@@ -35,6 +35,13 @@ static struct task_struct *pick_next_tas
static void
dequeue_task_idle(struct rq *rq, struct task_struct *p, int flags)
{
+ static bool once = FALSE;
+
+ if (once == TRUE)
+ return;
+
+ once = TRUE;
+
raw_spin_unlock_irq(&rq->lock);
printk(KERN_ERR "bad: scheduling from the idle thread!\n");
dump_stack();

7
kernel.spec
View File

@ -62,7 +62,7 @@ Summary: The Linux kernel
# For non-released -rc kernels, this will be appended after the rcX and
# gitX tags, so a 3 here would become part of release "0.rcX.gitX.3"
#
%global baserelease 2
%global baserelease 3
%global fedora_build %{baserelease}
# base_sublevel is the kernel version we're starting with and patching
@ -747,6 +747,7 @@ Patch21276: mac80211-Dont-restart-sta-timer-if-not-running.patch
Patch21275: VMX-x86-handle-host-TSC-calibration-failure.patch
Patch22000: weird-root-dentry-name-debug.patch
Patch22010: debug-idle-sched-warn-once.patch
#selinux ptrace child permissions
Patch22001: selinux-apply-different-permission-to-ptrace-child.patch
@ -1414,6 +1415,7 @@ ApplyPatch lis3-improve-handling-of-null-rate.patch
ApplyPatch scsi-sd_revalidate_disk-prevent-NULL-ptr-deref.patch
ApplyPatch weird-root-dentry-name-debug.patch
ApplyPatch debug-idle-sched-warn-once.patch
#selinux ptrace child permissions
ApplyPatch selinux-apply-different-permission-to-ptrace-child.patch
@ -2281,6 +2283,9 @@ fi
# and build.
%changelog
* Thu Mar 21 2013 Dave Jones <davej@redhat.com> - 3.9.0-0.rc3.git1.2
- Only print "bad: scheduling from the idle thread" warning once.
* Thu Mar 21 2013 Josh Boyer <jwboyer@redhat.com>
- Fix workqueue crash in mac80211 (rhbz 920218)