On Monday, February 04, 2013 04:45:11 PM Nathan Zimmer wrote: > I am noticing the cpufreq_driver_lock is quite hot. > On an idle 512 system perf shows me most of the system time is spent on this > lock. This is quite signifigant as top shows 5% of time in system time. > My solution was to first convert the lock to a rwlock and then to the rcu. > > > Nathan Zimmer (2): > cpufreq: Convert the cpufreq_driver_lock to a rwlock > cpufreq: Convert the cpufreq_driver_lock to use the rcu > > drivers/cpufreq/cpufreq.c | 139 > ++++++++++++++++++++++++++-------------------- > 1 file changed, 79 insertions(+), 60 deletions(-)
I like these changes. Viresh, anyone, any comments? Rafael -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
