kernel · dd9daa221e77f642954849a795fa7c59533a9b2f · xcap / xcap-capability-linux

[PATCH] rcu_do_batch: make ->qlen decrement irq safe

Oleg Nesterov authored 18 years ago

rcu_do_batch() decrements rdp->qlen with irqs enabled.  This is not good,
it can also be modified by call_rcu() from interrupt.

Decrement ->qlen once with irqs disabled, after a main loop.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Dipankar Sarma <dipankar@in.ibm.com>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

dd9daa22

History

dd9daa22 18 years ago

History

Name	Last commit	Last update
..
irq
power
time
.gitignore
Kconfig.hz
Kconfig.preempt
Makefile
acct.c
audit.c
audit.h
auditfilter.c
auditsc.c
capability.c
compat.c
configs.c
cpu.c
cpuset.c
delayacct.c
dma.c
exec_domain.c
exit.c
extable.c
fork.c
futex.c
futex_compat.c
hrtimer.c
itimer.c
kallsyms.c
kexec.c
kfifo.c
kmod.c
kprobes.c
ksysfs.c
kthread.c
lockdep.c
lockdep_internals.h
lockdep_proc.c
module.c
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
panic.c
params.c
pid.c
posix-cpu-timers.c
posix-timers.c
printk.c
profile.c
ptrace.c
rcupdate.c
rcutorture.c
relay.c
resource.c
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem.c
sched.c
seccomp.c
signal.c
softirq.c
softlockup.c
spinlock.c
stacktrace.c
stop_machine.c
sys.c
sys_ni.c
sysctl.c
taskstats.c
time.c
timer.c
uid16.c
unwind.c
user.c
wait.c
workqueue.c