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| author | Alexander Gordeev <agordeev@redhat.com> | 2012-03-09 14:59:26 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2012-03-09 17:19:08 +0100 |
| commit | 4bcdf1d0b652bc33d52f2322b77463e4dc58abf8 (patch) | |
| tree | 2a8ecf0f6ef1d0c85a4553cb1d1c7dc74706488a /include/linux/sched.h | |
| parent | 540b60e24f3f4781d80e47122f0c4486a03375b8 (diff) | |
| download | linux-stable-4bcdf1d0b652bc33d52f2322b77463e4dc58abf8.tar.gz linux-stable-4bcdf1d0b652bc33d52f2322b77463e4dc58abf8.tar.bz2 linux-stable-4bcdf1d0b652bc33d52f2322b77463e4dc58abf8.zip | |
genirq: Get rid of unnecessary irqaction field in task_struct
When a new thread handler is created, an irqaction is passed to it as
data. Not only that irqaction is stored in task_struct by the handler
for later use, but also a structure associated with the kernel thread
keeps this value as long as the thread exists.
This fix kicks irqaction out off task_struct. Yes, I introduce new bit
field. But it allows not only to eliminate the duplicate, but also
shortens size of task_struct.
Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Link: http://lkml.kernel.org/r/20120309135925.GB2114@dhcp-26-207.brq.redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 7d379a6bfd88..07f537a371ce 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1319,6 +1319,11 @@ struct task_struct { unsigned sched_reset_on_fork:1; unsigned sched_contributes_to_load:1; +#ifdef CONFIG_GENERIC_HARDIRQS + /* IRQ handler threads */ + unsigned irq_thread:1; +#endif + pid_t pid; pid_t tgid; @@ -1427,11 +1432,6 @@ struct task_struct { * mempolicy */ spinlock_t alloc_lock; -#ifdef CONFIG_GENERIC_HARDIRQS - /* IRQ handler threads */ - struct irqaction *irqaction; -#endif - /* Protection of the PI data structures: */ raw_spinlock_t pi_lock; |