[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
Re: pool_cache_invalidate(9) (wrong?) semantic -- enable xcall invalidation
On Wed, Nov 09, 2011 at 01:51:23AM +0100, Jean-Yves Migeon wrote:
> 1 # adding an "invalidate flag" to the pool cache, for each CPU.
How about a serial number, instead. Locally in each CPU's pool cache,
globally for the entire kernel. pool_cache_invalidate increments the
serial number with an atomic operation; before each allocation on any
CPU, that CPU checks whether its local serial number matches the global
one. If not, invalidate, then retry the operation. Repeat as necessary.
Main Index |
Thread Index |