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authorMatthew Wilcox <matthew@wil.cx>2006-09-08 07:43:44 -0400
committerMatthew Wilcox <willy@parisc-linux.org>2006-10-04 08:48:17 -0400
commit65ee8f0a7fc2f2267b983f1f0349acb8f19db6e6 (patch)
treea74a9c7683957545c67777aee644ef14801975a2 /include/sound
parent56f335c89e28c488b1bfea3e5e697fce805c784d (diff)
[PARISC] Enable interrupts while spinning
Use the __raw_spin_lock_flags routine so we can take an interrupt while spinning. This re-fixes a bug jejb found on 2005-10-20: CPU0 does a flush_tlb_all holding the vmlist_lock for write. CPU1 tries a cat of /proc/meminfo which tries to acquire vmlist_lock for read CPU1 is now spinning with interrupts disabled CPU0 tries to execute a smp_call_function to flush the local tlb caches This is now a deadlock because CPU1 is spinning with interrupts disabled and can never receive the IPI Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'include/sound')
0 files changed, 0 insertions, 0 deletions