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| author |   Dimitri Sivanich <sivanich@sgi.com> | 2010-12-28 13:34:42 -0600 |
|---|---|---|
| committer |   Tony Luck <tony.luck@intel.com> | 2010-12-28 14:06:21 -0800 |
| commit | 75c1c91cb92806f960fcd6e53d2a0c21f343081c (patch) | |
| tree | f87fd2f7cf75b9d2b1180452120f8dd852d2c9b6 /arch/ia64/kernel/perfmon.c | |
| parent | Linux 2.6.37-rc7 (diff) | |
| download | linux-dev-75c1c91cb92806f960fcd6e53d2a0c21f343081c.tar.xz linux-dev-75c1c91cb92806f960fcd6e53d2a0c21f343081c.zip | |
[IA64] eliminate race condition in smp_flush_tlb_mm
A race condition exists within smp_call_function_many() when called from
smp_flush_tlb_mm(). On rare occasions the cpu_vm_mask can be cleared
while smp_call_function_many is executing, occasionally resulting in a
hung process.
Make a copy of the mask prior to calling smp_call_function_many().
Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/kernel/perfmon.c')
0 files changed, 0 insertions, 0 deletions