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| author | Christian Krafft <krafft@de.ibm.com> | 2008-07-16 05:51:43 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-22 10:39:31 +1000 |
| commit | 880e710580c09bf86cddac687fc492a8318934fe (patch) | |
| tree | 96df30fa63b986bf6b8ef63febfaaba8bc80ee80 /arch/powerpc/platforms/cell/Kconfig | |
| parent | 8204cba7fa0ca0752fdaec021dae2634788178aa (diff) | |
| download | blackbird-op-linux-880e710580c09bf86cddac687fc492a8318934fe.tar.gz blackbird-op-linux-880e710580c09bf86cddac687fc492a8318934fe.zip | |
powerpc/cell/cpufreq: Add spu aware cpufreq governor
This patch adds a cpufreq governor that takes the number of running spus
into account. It's very similar to the ondemand governor, but not as complex.
Instead of hacking spu load into the ondemand governor it might be easier to
have cpufreq accepting multiple governors per cpu in future.
Don't know if this is the right way, but it would keep the governors simple.
Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Dave Jones <davej@redhat.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms/cell/Kconfig')
| -rw-r--r-- | arch/powerpc/platforms/cell/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig index 3959fcfe731c..6ee571f743c5 100644 --- a/arch/powerpc/platforms/cell/Kconfig +++ b/arch/powerpc/platforms/cell/Kconfig @@ -107,6 +107,15 @@ config CBE_CPUFREQ_PMI processor will not only be able to run at lower speed, but also at lower core voltage. +config CBE_CPUFREQ_SPU_GOVERNOR + tristate "CBE frequency scaling based on SPU usage" + depends on SPU_FS && CPU_FREQ + default m + help + This governor checks for spu usage to adjust the cpu frequency. + If no spu is running on a given cpu, that cpu will be throttled to + the minimal possible frequency. + endmenu config OPROFILE_CELL |
