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Subject[PATCH v2 0/3] devfreq: improve devfreq statistics counting

this patch series tries to improve devfreq statistics:

- do conversion to use 64-bit jiffies for storing elapsed time and prevent
counters overflow,

- add ability to reset statistics using sysfs,

- move statistics data to separate structure for improved code
readability and maintenance.

Changes in v2:
- added Acked-by to first patch
- dropped spinlock patch, there is mutex used for protecting stats data
- rewrite clearing statistics, suggested by Chanwoo Choi: reuse
trans_stats sysfs file, any write to it will clear devfreq stats
- dropped change var name last_stat_updated
- squashed three last patches into one, as it turned out that freq_table
from devfreq_profile is used by other drivers
- rebased on linux-next

Kamil Konieczny (3):
devfreq: change time stats to 64-bit
devfreq: add clearing transitions stats
devfreq: move statistics to separate struct

drivers/devfreq/devfreq.c | 86 +++++++++++++++++++++++++++------------
include/linux/devfreq.h | 31 ++++++++++----
2 files changed, 81 insertions(+), 36 deletions(-)


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