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authorRafael J. Wysocki <rjw@sisk.pl>2012-04-29 16:54:17 -0400
committerRafael J. Wysocki <rjw@sisk.pl>2012-05-01 15:28:03 -0400
commita5bef810ad9816a3a8e500d8832be77d52903a12 (patch)
treedd108feaf2fa45f9520b63ea94ecec2c42259194 /include/linux/pm_domain.h
parent69964ea4c7b68c9399f7977aa5b9aa6539a6a98a (diff)
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 <rjw@sisk.pl>
Diffstat (limited to 'include/linux/pm_domain.h')
-rw-r--r--include/linux/pm_domain.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 91f8286106ea..9c25219458c2 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -93,7 +93,7 @@ struct gpd_timing_data {
93 s64 start_latency_ns; 93 s64 start_latency_ns;
94 s64 save_state_latency_ns; 94 s64 save_state_latency_ns;
95 s64 restore_state_latency_ns; 95 s64 restore_state_latency_ns;
96 s64 break_even_ns; 96 s64 effective_constraint_ns;
97}; 97};
98 98
99struct generic_pm_domain_data { 99struct generic_pm_domain_data {