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| author | Dan Williams <dan.j.williams@intel.com> | 2009-08-29 19:13:13 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-08-29 19:13:13 -0700 |
| commit | 07a3b417dc3d00802bd7b4874c3e811f0b015a7d (patch) | |
| tree | b3b484067f700a70f3e7d575bad6e7e4ae2742cc /drivers/md/Kconfig | |
| parent | b774ef491b4edf6876077014ecbb87f10c69c10f (diff) | |
| download | kernel_samsung_espresso10-07a3b417dc3d00802bd7b4874c3e811f0b015a7d.zip kernel_samsung_espresso10-07a3b417dc3d00802bd7b4874c3e811f0b015a7d.tar.gz kernel_samsung_espresso10-07a3b417dc3d00802bd7b4874c3e811f0b015a7d.tar.bz2 | |
md/raid456: distribute raid processing over multiple cores
Now that the resources to handle stripe_head operations are allocated
percpu it is possible for raid5d to distribute stripe handling over
multiple cores. This conversion also adds a call to cond_resched() in
the non-multicore case to prevent one core from getting monopolized for
raid operations.
Cc: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/md/Kconfig')
| -rw-r--r-- | drivers/md/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig index abb8636..09c0c6e 100644 --- a/drivers/md/Kconfig +++ b/drivers/md/Kconfig @@ -154,6 +154,17 @@ config MD_RAID456 If unsure, say Y. +config MULTICORE_RAID456 + bool "RAID-4/RAID-5/RAID-6 Multicore processing (EXPERIMENTAL)" + depends on MD_RAID456 + depends on SMP + depends on EXPERIMENTAL + ---help--- + Enable the raid456 module to dispatch per-stripe raid operations to a + thread pool. + + If unsure, say N. + config MD_RAID6_PQ tristate |