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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-09-21 16:53:00 -0700 |
|---|---|---|
| committer | Kevin Hilman <khilman@ti.com> | 2011-11-08 11:42:16 -0800 |
| commit | 46c12216c81b470b957d7fdefd8630efc2edddd0 (patch) | |
| tree | 8d0431c6cc43bd3d63759684cd215a6b02dca49b /drivers/virt | |
| parent | 731e0cc639364646d36981d90ab0b6af12b8face (diff) | |
| download | linux-46c12216c81b470b957d7fdefd8630efc2edddd0.tar.bz2 | |
cpufreq: OMAP: Add SMP support for OMAP4+
On OMAP SMP configuartion, both processors share the voltage
and clock. So both CPUs needs to be scaled together and hence
needs software co-ordination.
Also, update lpj with reference value to avoid progressive error.
Adjust _both_ the per-cpu loops_per_jiffy and global lpj. Calibrate
them with with reference to the initial values to avoid a
progressively bigger and bigger error in the value over time.
While at this, re-use the notifiers for UP/SMP since on UP machine or
UP_ON_SMP policy->cpus mask would contain only the boot CPU.
Based on initial SMP support by Santosh Shilimkar.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[khilman@ti.com: due to overlap/rework, combined original Santosh patch
and Russell's rework]
Signed-off-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'drivers/virt')
0 files changed, 0 insertions, 0 deletions