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cpuidle: Invert CPUIDLE_FLAG_TIME_VALID logic

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The only place where the time is invalid is when the ACPI_CSTATE_FFH entry
method is not set. Otherwise for all the drivers, the time can be correctly
measured.

Instead of duplicating the CPUIDLE_FLAG_TIME_VALID flag in all the drivers
for all the states, just invert the logic by replacing it by the flag
CPUIDLE_FLAG_TIME_INVALID, hence we can set this flag only for the acpi idle
driver, remove the former flag from all the drivers and invert the logic with
this flag in the different governor.

Signed-off-by: Daniel Lezcano <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Daniel Lezcano 2014-11-12 16:03:50 +01:00 • committed by Rafael J. Wysocki
commit b82b6cca48
34 changed files with 75 additions and 125 deletions
Download patch file Download diff file Expand all files Collapse all files

1
drivers/cpuidle/cpuidle-arm64.c
View file

@ -73,7 +73,6 @@ static struct cpuidle_driver arm64_idle_driver = {
.exit_latency = 1,
.target_residency = 1,
.power_usage = UINT_MAX,
.flags = CPUIDLE_FLAG_TIME_VALID,
.name = "WFI",
.desc = "ARM64 WFI",
}

1
drivers/cpuidle/cpuidle-at91.c
View file

@ -43,7 +43,6 @@ static struct cpuidle_driver at91_idle_driver = {
.enter = at91_enter_idle,
.exit_latency = 10,
.target_residency = 10000,
.flags = CPUIDLE_FLAG_TIME_VALID,
.name = "RAM_SR",
.desc = "WFI and DDR Self Refresh",
},

6
drivers/cpuidle/cpuidle-big_little.c
View file

@ -67,8 +67,7 @@ static struct cpuidle_driver bl_idle_little_driver = {
.enter = bl_enter_powerdown,
.exit_latency = 700,
.target_residency = 2500,
.flags = CPUIDLE_FLAG_TIME_VALID |
CPUIDLE_FLAG_TIMER_STOP,
.flags = CPUIDLE_FLAG_TIMER_STOP,
.name = "C1",
.desc = "ARM little-cluster power down",
},
@ -89,8 +88,7 @@ static struct cpuidle_driver bl_idle_big_driver = {
.enter = bl_enter_powerdown,
.exit_latency = 500,
.target_residency = 2000,
.flags = CPUIDLE_FLAG_TIME_VALID |
CPUIDLE_FLAG_TIMER_STOP,
.flags = CPUIDLE_FLAG_TIMER_STOP,
.name = "C1",
.desc = "ARM big-cluster power down",
},

1
drivers/cpuidle/cpuidle-calxeda.c
View file

@ -55,7 +55,6 @@ static struct cpuidle_driver calxeda_idle_driver = {
{
.name = "PG",
.desc = "Power Gate",
.flags = CPUIDLE_FLAG_TIME_VALID,
.exit_latency = 30,
.power_usage = 50,
.target_residency = 200,

7
drivers/cpuidle/cpuidle-cps.c
View file

@ -79,7 +79,6 @@ static struct cpuidle_driver cps_driver = {
.enter = cps_nc_enter,
.exit_latency = 200,
.target_residency = 450,
.flags = CPUIDLE_FLAG_TIME_VALID,
.name = "nc-wait",
.desc = "non-coherent MIPS wait",
},
@ -87,8 +86,7 @@ static struct cpuidle_driver cps_driver = {
.enter = cps_nc_enter,
.exit_latency = 300,
.target_residency = 700,
.flags = CPUIDLE_FLAG_TIME_VALID |
CPUIDLE_FLAG_TIMER_STOP,
.flags = CPUIDLE_FLAG_TIMER_STOP,
.name = "clock-gated",
.desc = "core clock gated",
},
@ -96,8 +94,7 @@ static struct cpuidle_driver cps_driver = {
.enter = cps_nc_enter,
.exit_latency = 600,
.target_residency = 1000,
.flags = CPUIDLE_FLAG_TIME_VALID |
CPUIDLE_FLAG_TIMER_STOP,
.flags = CPUIDLE_FLAG_TIMER_STOP,
.name = "power-gated",
.desc = "core power gated",
},

1
drivers/cpuidle/cpuidle-exynos.c
View file

@ -47,7 +47,6 @@ static struct cpuidle_driver exynos_idle_driver = {
.enter = exynos_enter_lowpower,
.exit_latency = 300,
.target_residency = 100000,
.flags = CPUIDLE_FLAG_TIME_VALID,
.name = "C1",
.desc = "ARM power down",
},

1
drivers/cpuidle/cpuidle-kirkwood.c
View file

@ -47,7 +47,6 @@ static struct cpuidle_driver kirkwood_idle_driver = {
.enter = kirkwood_enter_idle,
.exit_latency = 10,
.target_residency = 100000,
.flags = CPUIDLE_FLAG_TIME_VALID,
.name = "DDR SR",
.desc = "WFI and DDR Self Refresh",
},

8
drivers/cpuidle/cpuidle-mvebu-v7.c
View file

@ -53,7 +53,6 @@ static struct cpuidle_driver armadaxp_idle_driver = {
.exit_latency = 10,
.power_usage = 50,
.target_residency = 100,
.flags = CPUIDLE_FLAG_TIME_VALID,
.name = "MV CPU IDLE",
.desc = "CPU power down",
},
@ -62,8 +61,7 @@ static struct cpuidle_driver armadaxp_idle_driver = {
.exit_latency = 100,
.power_usage = 5,
.target_residency = 1000,
.flags = CPUIDLE_FLAG_TIME_VALID |
MVEBU_V7_FLAG_DEEP_IDLE,
.flags = MVEBU_V7_FLAG_DEEP_IDLE,
.name = "MV CPU DEEP IDLE",
.desc = "CPU and L2 Fabric power down",
},
@ -78,8 +76,7 @@ static struct cpuidle_driver armada370_idle_driver = {
.exit_latency = 100,
.power_usage = 5,
.target_residency = 1000,
.flags = (CPUIDLE_FLAG_TIME_VALID |
MVEBU_V7_FLAG_DEEP_IDLE),
.flags = MVEBU_V7_FLAG_DEEP_IDLE,
.name = "Deep Idle",
.desc = "CPU and L2 Fabric power down",
},
@ -94,7 +91,6 @@ static struct cpuidle_driver armada38x_idle_driver = {
.exit_latency = 10,
.power_usage = 5,
.target_residency = 100,
.flags = CPUIDLE_FLAG_TIME_VALID,
.name = "Idle",
.desc = "CPU and SCU power down",
},

6
drivers/cpuidle/cpuidle-powernv.c
View file

@ -93,7 +93,6 @@ static struct cpuidle_state powernv_states[MAX_POWERNV_IDLE_STATES] = {
{ /* Snooze */
.name = "snooze",
.desc = "snooze",
.flags = CPUIDLE_FLAG_TIME_VALID,
.exit_latency = 0,
.target_residency = 0,
.enter = &snooze_loop },
@ -202,7 +201,7 @@ static int powernv_add_idle_states(void)
/* Add NAP state */
strcpy(powernv_states[nr_idle_states].name, "Nap");
strcpy(powernv_states[nr_idle_states].desc, "Nap");
powernv_states[nr_idle_states].flags = CPUIDLE_FLAG_TIME_VALID;
powernv_states[nr_idle_states].flags = 0;
powernv_states[nr_idle_states].exit_latency =
((unsigned int)latency_ns) / 1000;
powernv_states[nr_idle_states].target_residency =
@ -215,8 +214,7 @@ static int powernv_add_idle_states(void)
/* Add FASTSLEEP state */
strcpy(powernv_states[nr_idle_states].name, "FastSleep");
strcpy(powernv_states[nr_idle_states].desc, "FastSleep");
powernv_states[nr_idle_states].flags =
CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TIMER_STOP;
powernv_states[nr_idle_states].flags = CPUIDLE_FLAG_TIMER_STOP;
powernv_states[nr_idle_states].exit_latency =
((unsigned int)latency_ns) / 1000;
powernv_states[nr_idle_states].target_residency =

3
drivers/cpuidle/cpuidle-pseries.c
View file

@ -142,14 +142,12 @@ static struct cpuidle_state dedicated_states[] = {
{ /* Snooze */
.name = "snooze",
.desc = "snooze",
.flags = CPUIDLE_FLAG_TIME_VALID,
.exit_latency = 0,
.target_residency = 0,
.enter = &snooze_loop },
{ /* CEDE */
.name = "CEDE",
.desc = "CEDE",
.flags = CPUIDLE_FLAG_TIME_VALID,
.exit_latency = 10,
.target_residency = 100,
.enter = &dedicated_cede_loop },
@ -162,7 +160,6 @@ static struct cpuidle_state shared_states[] = {
{ /* Shared Cede */
.name = "Shared Cede",
.desc = "Shared Cede",
.flags = CPUIDLE_FLAG_TIME_VALID,
.exit_latency = 0,
.target_residency = 0,
.enter = &shared_cede_loop },

3
drivers/cpuidle/cpuidle-ux500.c
View file

@ -101,8 +101,7 @@ static struct cpuidle_driver ux500_idle_driver = {
.enter = ux500_enter_idle,
.exit_latency = 70,
.target_residency = 260,
.flags = CPUIDLE_FLAG_TIME_VALID |
CPUIDLE_FLAG_TIMER_STOP,
.flags = CPUIDLE_FLAG_TIMER_STOP,
.name = "ApIdle",
.desc = "ARM Retention",
},

1
drivers/cpuidle/cpuidle-zynq.c
View file

@ -52,7 +52,6 @@ static struct cpuidle_driver zynq_idle_driver = {
.enter = zynq_enter_idle,
.exit_latency = 10,
.target_residency = 10000,
.flags = CPUIDLE_FLAG_TIME_VALID,
.name = "RAM_SR",
.desc = "WFI and RAM Self Refresh",
},

1
drivers/cpuidle/driver.c
View file

@ -201,7 +201,6 @@ static void poll_idle_init(struct cpuidle_driver *drv)
state->exit_latency = 0;
state->target_residency = 0;
state->power_usage = -1;
state->flags = CPUIDLE_FLAG_TIME_VALID;
state->enter = poll_idle;
state->disabled = false;
}

2
drivers/cpuidle/dt_idle_states.c
View file

@ -73,7 +73,7 @@ static int init_state_node(struct cpuidle_state *idle_state,
return -EINVAL;
}
idle_state->flags = CPUIDLE_FLAG_TIME_VALID;
idle_state->flags = 0;
if (of_property_read_bool(state_node, "local-timer-stop"))
idle_state->flags |= CPUIDLE_FLAG_TIMER_STOP;
/*

2
drivers/cpuidle/governors/ladder.c
View file

@ -79,7 +79,7 @@ static int ladder_select_state(struct cpuidle_driver *drv,
last_state = &ldev->states[last_idx];
if (drv->states[last_idx].flags & CPUIDLE_FLAG_TIME_VALID) {
if (!(drv->states[last_idx].flags & CPUIDLE_FLAG_TIME_INVALID)) {
last_residency = cpuidle_get_last_residency(dev) - \
drv->states[last_idx].exit_latency;
}

2
drivers/cpuidle/governors/menu.c
View file

@ -405,7 +405,7 @@ static void menu_update(struct cpuidle_driver *drv, struct cpuidle_device *dev)
* the measured amount of time is less than the exit latency,
* assume the state was never reached and the exit latency is 0.
*/
if (unlikely(!(target->flags & CPUIDLE_FLAG_TIME_VALID))) {
if (unlikely(target->flags & CPUIDLE_FLAG_TIME_INVALID)) {
/* Use timer value as is */
measured_us = data->next_timer_us;