linux/drivers/cpufreq
Nagananda.Chumbalkar@hp.com 1dbf58881f [CPUFREQ] Fix ondemand to not request targets outside policy limits
Dominik said:
target_freq cannot be below policy->min or above policy->max.
If it were, the whole cpufreq subsystem is broken.

But (answer):
I think the "ondemand" governor can ask for a target frequency that is
below policy->min.
...
A patch such as below may be needed to sanitize the target frequency
requested by "ondemand". The "conservative" governor already has this check:

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Dave Jones <davej@redhat.com>

# diff -bur x/drivers/cpufreq/cpufreq_ondemand.c.orig y/drivers/cpufreq/cpufreq_ondemand.c
2010-01-13 10:55:16 -05:00
..
cpufreq.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2009-12-14 09:58:24 -08:00
cpufreq_conservative.c [CPUFREQ] Use global sysfs cpufreq structure for conservative governor tunings 2009-11-24 13:33:34 -05:00
cpufreq_ondemand.c [CPUFREQ] Fix ondemand to not request targets outside policy limits 2010-01-13 10:55:16 -05:00
cpufreq_performance.c
cpufreq_powersave.c
cpufreq_stats.c
cpufreq_userspace.c
freq_table.c percpu: make percpu symbols in cpufreq unique 2009-10-29 22:34:13 +09:00
Kconfig
Makefile