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authorAndreas Larsson <andreas@gaisler.com>2014-12-18 13:23:23 +0100
committerDavid S. Miller <davem@davemloft.net>2014-12-18 12:47:54 -0500
commit66d0f7ec9f1038452178b1993fc07fd96d30fd38 (patch)
tree8894bb4925a29d29301a851d4bb384b68bd6a24d /arch/arc/configs/fpga_defconfig
parent44e8967d591686463e84a88b46b03beba3ab49fb (diff)
sparc32: destroy_context() and switch_mm() needs to disable interrupts.
Load balancing can be triggered in the critical sections protected by srmmu_context_spinlock in destroy_context() and switch_mm() and can hang the cpu waiting for the rq lock of another cpu that in turn has called switch_mm hangning on srmmu_context_spinlock leading to deadlock. So, disable interrupt while taking srmmu_context_spinlock in destroy_context() and switch_mm() so we don't deadlock. See also commit 77b838fa1ef0 ("[SPARC64]: destroy_context() needs to disable interrupts.") Signed-off-by: Andreas Larsson <andreas@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/arc/configs/fpga_defconfig')
0 files changed, 0 insertions, 0 deletions