On 25-07-16, 14:11, Jisheng Zhang wrote:

In dev_pm_opp_set_rate(), _find_opp_table() is called 4 times: once by
_get_opp_clk(), once by dev_pm_opp_set_rate() itself, and twice by
dev_pm_opp_find_freq_ceil(). If there are several opp_tables in the
system, three times of opp table finding is a big waste. This patch
reduced the call of _find_opp_table() to twice.

Signed-off-by: Jisheng Zhang <redacted>
---
Since v2:
 - fix gcc warnings

Since v1:
 - avoid opp_table pointer usage after the rcu_read_unlock() as pointed
   out by Viresh, thus we can only reduced the call of _find_opp_table
   to twice.

 drivers/base/power/opp/core.c | 31 +++++++++++++++++++------------
 1 file changed, 19 insertions(+), 12 deletions(-)

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>

-- 
viresh