| commit | 275a89bdd3868af3008852594d2e169eaf69441b | |
| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | |
| Thu, 21 Aug 2008 13:14:55 +0000 (21 06:14 -0700) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Thu, 21 Aug 2008 14:01:02 +0000 (21 16:01 +0200) | ||
| tree | 81ad2537fe871a3e583013dabf6fdba539773332 | treesnapshot (tar.gz zip) |
| parent | 0c925d79234fe77589d8ff3861f9f8bb9e7fc3f6 | commitdiff |
rcu: use irq-safe locks
Some earlier tip/core/rcu patches caused RCU to incorrectly enable irqs
too early in boot. This caused Yinghai's repeated-kexec testing to
hit oopses, presumably due to so that device interrupts left over from
the prior kernel instance (which would oops the newly booting kernel
before it got a chance to reset said devices). This patch therefore
converts all the local_irq_disable()s in rcuclassic.c to local_irq_save().
Besides, I never did like local_irq_disable() anyway. ;-)
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Some earlier tip/core/rcu patches caused RCU to incorrectly enable irqs
too early in boot. This caused Yinghai's repeated-kexec testing to
hit oopses, presumably due to so that device interrupts left over from
the prior kernel instance (which would oops the newly booting kernel
before it got a chance to reset said devices). This patch therefore
converts all the local_irq_disable()s in rcuclassic.c to local_irq_save().
Besides, I never did like local_irq_disable() anyway. ;-)
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| kernel/rcuclassic.c | diffblobblamehistory |