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current->blocked will be set to the value of current->thread_info->flags if the cmpxchg to update thread_info->flags fails. For performance reasons the store into current->blocked was placed in the cmpxchg loop. However, the cmpxchg overwrites the register holding the value to be stored. In the rare case of a retry the value of thread_info->flags will be written into current->blocked. The fix is to use another register so that the register containing the current->blocked value is not overwritten. Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com> |
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configs | ||
dig | ||
hp | ||
ia32 | ||
kernel | ||
lib | ||
mm | ||
oprofile | ||
pci | ||
scripts | ||
sn | ||
defconfig | ||
install.sh | ||
Kconfig | ||
Kconfig.debug | ||
Makefile | ||
module.lds |