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| author | Mark Lord <[email protected]> | 2009-03-11 02:01:17 +0000 |
|---|---|---|
| committer | Jeff Garzik <[email protected]> | 2009-03-25 02:35:37 +0000 |
| commit | 2b748a0a344847fe6b924407bbe153e1878c9f09 (patch) | |
| tree | 0a84cdbc70d0b9a7e974299bbaa0cba4b9610a58 /security/selinux/hooks.c | |
| parent | sata_mv: cosmetic preparations for IRQ coalescing (diff) | |
| download | kernel-2b748a0a344847fe6b924407bbe153e1878c9f09.tar.gz kernel-2b748a0a344847fe6b924407bbe153e1878c9f09.zip | |
sata_mv: implement IRQ coalescing (v2)
Add IRQ coalescing to sata_mv (off by default).
This feature can reduce total interrupt overhead for RAID setups
in some situations, by deferring the interrupt signal until one or both of:
a) a specified io_count (completed SATA commands) is achieved, or
b) a specified time interval elapses after an IO completion.
For now, module parameters are used to set the irq_coalescing_io_count
and irq_coalescing_usecs (timeout) globally. These may eventually
be supplemented with sysfs attributes, so that thresholds can be set
on-the-fly and on a per-chip (or even per-host_controller) basis.
Signed-off-by: Mark Lord <[email protected]>
Signed-off-by: Jeff Garzik <[email protected]>
Diffstat (limited to 'security/selinux/hooks.c')
0 files changed, 0 insertions, 0 deletions