Hi, Despite being documented in function documentation and in Documentation/power/opp.txt, many of the users of OPP APIs dont honor RCU lock usage appropriately.
This recently appeared in IRC discussion earlier today [1]. I did an audit of current usage and the following series is a result of this. NOTE: 1. The patch "PM / devfreq: exynos4_bus: honor RCU lock usage" has only been build tested as I dont have an exynos platform to try it on. I have tried to make it as least intrusive as possible and at least reviewed to ensure I haven't screwed anything up. Other than this, I have added appropriate tested by information in requisite patches. Series is based off: v3.8-rc4 tag Also available in the following location[2]: https://github.com/nmenon/linux-2.6-playground branch: post/pm/opp-fixes-v1 Nishanth Menon (4): cpufreq: OMAP: use RCU locks around usage of OPP cpufreq: cpufreq-cpu0: use RCU locks around usage of OPP PM / devfreq: add locking documentation for recommend_opp PM / devfreq: exynos4_bus: honor RCU lock usage drivers/cpufreq/cpufreq-cpu0.c | 5 +++ drivers/cpufreq/omap-cpufreq.c | 3 ++ drivers/devfreq/devfreq.c | 5 +++ drivers/devfreq/exynos4_bus.c | 94 ++++++++++++++++++++++++++++------------ 4 files changed, 80 insertions(+), 27 deletions(-) [1] http://www.beagleboard.org/irclogs/index.php?date=2013-01-18#T14:14:07 [2] https://github.com/nmenon/linux-2.6-playground/commits/post/pm/opp-fixes-v1 Regards, Nishanth Menon -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
