From: Rafael J. Wysocki Date: Sun, 29 Apr 2012 20:54:17 +0000 (+0200) Subject: PM / Domains: Rework default device stop governor function, v2 X-Git-Tag: v3.5-rc1~116^2~4^2~7 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a5bef810ad9816a3a8e500d8832be77d52903a12;p=pandora-kernel.git PM / Domains: Rework default device stop governor function, v2 The existing default device stop governor function for PM domains, default_stop_ok(), is supposed to check whether or not the device's PM QoS latency constraint will be violated if the device is stopped by pm_genpd_runtime_suspend(). However, the computations carried out by it don't reflect the definition of the PM QoS latency constrait in Documentation/ABI/testing/sysfs-devices-power. Make default_stop_ok() follow the definition of the PM QoS latency constrait. In particular, make it take the device's start and stop latencies correctly. Add a new field, effective_constraint_ns, to struct gpd_timing_data and use it to store the difference between the device's PM QoS constraint and its resume latency for use by the device's parent (the effective_constraint_ns values for the children are used for computing the parent's one along with its PM QoS constraint). Remove the break_even_ns field from struct gpd_timing_data, because it's not used any more. Signed-off-by: Rafael J. Wysocki --- Reading git-diff-tree failed