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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-11-21 21:41:51 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-11-29 13:48:39 +0300
commitba1e78a1dc0ca3e92f0be82279e6ba24177af7d6 (patch)
tree5e5e7b11802349ef48506b2261acbfd75b294a62 /drivers
parent656b4e639831a6110dab8cd7e557c41f87514869 (diff)
downloadlinux-ba1e78a1dc0ca3e92f0be82279e6ba24177af7d6.tar.xz
cpuidle: Drop disabled field from struct cpuidle_state
After recent cpuidle updates the "disabled" field in struct cpuidle_state is only used by two drivers (intel_idle and shmobile cpuidle) for marking unusable idle states, but that may as well be achieved with the help of a state flag, so define an "unusable" idle state flag, CPUIDLE_FLAG_UNUSABLE, make the drivers in question use it instead of the "disabled" field and make the core set CPUIDLE_STATE_DISABLED_BY_DRIVER for the idle states with that flag set. After the above changes, the "disabled" field in struct cpuidle_state is not used any more, so drop it. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/cpuidle/cpuidle.c2
-rw-r--r--drivers/cpuidle/poll_state.c1
-rw-r--r--drivers/idle/intel_idle.c6
3 files changed, 4 insertions, 5 deletions
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index 569dbac443bd..0005be5ea2b4 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -572,7 +572,7 @@ static int __cpuidle_register_device(struct cpuidle_device *dev)
return -EINVAL;
for (i = 0; i < drv->state_count; i++)
- if (drv->states[i].disabled)
+ if (drv->states[i].flags & CPUIDLE_FLAG_UNUSABLE)
dev->states_usage[i].disable |= CPUIDLE_STATE_DISABLED_BY_DRIVER;
per_cpu(cpuidle_devices, dev->cpu) = dev;
diff --git a/drivers/cpuidle/poll_state.c b/drivers/cpuidle/poll_state.c
index 9f1ace9c53da..f7e83613ae94 100644
--- a/drivers/cpuidle/poll_state.c
+++ b/drivers/cpuidle/poll_state.c
@@ -53,7 +53,6 @@ void cpuidle_poll_state_init(struct cpuidle_driver *drv)
state->target_residency_ns = 0;
state->power_usage = -1;
state->enter = poll_idle;
- state->disabled = false;
state->flags = CPUIDLE_FLAG_POLLING;
}
EXPORT_SYMBOL_GPL(cpuidle_poll_state_init);
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index 347b08b56042..75fd2a7b0842 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -1291,8 +1291,8 @@ static void sklh_idle_state_table_update(void)
return;
}
- skl_cstates[5].disabled = 1; /* C8-SKL */
- skl_cstates[6].disabled = 1; /* C9-SKL */
+ skl_cstates[5].flags |= CPUIDLE_FLAG_UNUSABLE; /* C8-SKL */
+ skl_cstates[6].flags |= CPUIDLE_FLAG_UNUSABLE; /* C9-SKL */
}
/*
* intel_idle_state_table_update()
@@ -1355,7 +1355,7 @@ static void __init intel_idle_cpuidle_driver_init(void)
continue;
/* if state marked as disabled, skip it */
- if (cpuidle_state_table[cstate].disabled != 0) {
+ if (cpuidle_state_table[cstate].flags & CPUIDLE_FLAG_UNUSABLE) {
pr_debug("state %s is disabled\n",
cpuidle_state_table[cstate].name);
continue;