* [PATCH 10/28] PM: QoS: Rename things related to the CPU latency QoS
[not found] <1654227.8mz0SueHsU@kreacher>
@ 2020-02-11 23:04 ` Rafael J. Wysocki
2020-02-12 10:34 ` Rafael J. Wysocki
2020-02-12 19:13 ` Greg Kroah-Hartman
2020-02-11 23:27 ` [PATCH 22/28] drivers: tty: Call cpu_latency_qos_*() instead of pm_qos_*() Rafael J. Wysocki
1 sibling, 2 replies; 6+ messages in thread
From: Rafael J. Wysocki @ 2020-02-11 23:04 UTC (permalink / raw)
To: Linux PM; +Cc: LKML, Amit Kucheria, Greg Kroah-Hartman, linux-serial
From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
First, rename PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE to
PM_QOS_CPU_LATENCY_DEFAULT_VALUE and update all of the code
referring to it accordingly.
Next, rename cpu_dma_constraints to cpu_latency_constraints, move
the definition of it closer to the functions referring to it and
update all of them accordingly. [While at it, add a comment to mark
the start of the code related to the CPU latency QoS.]
Finally, rename the pm_qos_power_*() family of functions and
pm_qos_power_fops to cpu_latency_qos_*() and cpu_latency_qos_fops,
respectively, and update the definition of cpu_latency_qos_miscdev.
[While at it, update the miscdev interface code start comment.]
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
drivers/tty/serial/8250/8250_omap.c | 6 ++--
drivers/tty/serial/omap-serial.c | 6 ++--
include/linux/pm_qos.h | 2 +-
kernel/power/qos.c | 56 +++++++++++++++++++------------------
4 files changed, 36 insertions(+), 34 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
index 6f343ca08440..19f8d2f9e7ba 100644
--- a/drivers/tty/serial/8250/8250_omap.c
+++ b/drivers/tty/serial/8250/8250_omap.c
@@ -1222,8 +1222,8 @@ static int omap8250_probe(struct platform_device *pdev)
DEFAULT_CLK_SPEED);
}
- priv->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
- priv->calc_latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
+ priv->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
+ priv->calc_latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
pm_qos_add_request(&priv->pm_qos_request, PM_QOS_CPU_DMA_LATENCY,
priv->latency);
INIT_WORK(&priv->qos_work, omap8250_uart_qos_work);
@@ -1445,7 +1445,7 @@ static int omap8250_runtime_suspend(struct device *dev)
if (up->dma && up->dma->rxchan)
omap_8250_rx_dma_flush(up);
- priv->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
+ priv->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
schedule_work(&priv->qos_work);
return 0;
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index 48017cec7f2f..ce2558767eee 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -1722,8 +1722,8 @@ static int serial_omap_probe(struct platform_device *pdev)
DEFAULT_CLK_SPEED);
}
- up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
- up->calc_latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
+ up->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
+ up->calc_latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
pm_qos_add_request(&up->pm_qos_request,
PM_QOS_CPU_DMA_LATENCY, up->latency);
INIT_WORK(&up->qos_work, serial_omap_uart_qos_work);
@@ -1869,7 +1869,7 @@ static int serial_omap_runtime_suspend(struct device *dev)
serial_omap_enable_wakeup(up, true);
- up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
+ up->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
schedule_work(&up->qos_work);
return 0;
diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h
index cb57e5918a25..a3e0bfc6c470 100644
--- a/include/linux/pm_qos.h
+++ b/include/linux/pm_qos.h
@@ -28,7 +28,7 @@ enum pm_qos_flags_status {
#define PM_QOS_LATENCY_ANY S32_MAX
#define PM_QOS_LATENCY_ANY_NS ((s64)PM_QOS_LATENCY_ANY * NSEC_PER_USEC)
-#define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC)
+#define PM_QOS_CPU_LATENCY_DEFAULT_VALUE (2000 * USEC_PER_SEC)
#define PM_QOS_RESUME_LATENCY_DEFAULT_VALUE PM_QOS_LATENCY_ANY
#define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT PM_QOS_LATENCY_ANY
#define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT_NS PM_QOS_LATENCY_ANY_NS
diff --git a/kernel/power/qos.c b/kernel/power/qos.c
index 201b43bc6457..a6bf53e9db17 100644
--- a/kernel/power/qos.c
+++ b/kernel/power/qos.c
@@ -56,14 +56,6 @@
*/
static DEFINE_SPINLOCK(pm_qos_lock);
-static struct pm_qos_constraints cpu_dma_constraints = {
- .list = PLIST_HEAD_INIT(cpu_dma_constraints.list),
- .target_value = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE,
- .default_value = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE,
- .no_constraint_value = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE,
- .type = PM_QOS_MIN,
-};
-
/**
* pm_qos_read_value - Return the current effective constraint value.
* @c: List of PM QoS constraint requests.
@@ -227,6 +219,16 @@ bool pm_qos_update_flags(struct pm_qos_flags *pqf,
return prev_value != curr_value;
}
+/* Definitions related to the CPU latency QoS. */
+
+static struct pm_qos_constraints cpu_latency_constraints = {
+ .list = PLIST_HEAD_INIT(cpu_latency_constraints.list),
+ .target_value = PM_QOS_CPU_LATENCY_DEFAULT_VALUE,
+ .default_value = PM_QOS_CPU_LATENCY_DEFAULT_VALUE,
+ .no_constraint_value = PM_QOS_CPU_LATENCY_DEFAULT_VALUE,
+ .type = PM_QOS_MIN,
+};
+
/**
* pm_qos_request - returns current system wide qos expectation
* @pm_qos_class: Ignored.
@@ -235,13 +237,13 @@ bool pm_qos_update_flags(struct pm_qos_flags *pqf,
*/
int pm_qos_request(int pm_qos_class)
{
- return pm_qos_read_value(&cpu_dma_constraints);
+ return pm_qos_read_value(&cpu_latency_constraints);
}
EXPORT_SYMBOL_GPL(pm_qos_request);
int pm_qos_request_active(struct pm_qos_request *req)
{
- return req->qos == &cpu_dma_constraints;
+ return req->qos == &cpu_latency_constraints;
}
EXPORT_SYMBOL_GPL(pm_qos_request_active);
@@ -278,7 +280,7 @@ void pm_qos_add_request(struct pm_qos_request *req,
trace_pm_qos_add_request(PM_QOS_CPU_DMA_LATENCY, value);
- req->qos = &cpu_dma_constraints;
+ req->qos = &cpu_latency_constraints;
cpu_latency_qos_update(req, PM_QOS_ADD_REQ, value);
}
EXPORT_SYMBOL_GPL(pm_qos_add_request);
@@ -338,9 +340,9 @@ void pm_qos_remove_request(struct pm_qos_request *req)
}
EXPORT_SYMBOL_GPL(pm_qos_remove_request);
-/* User space interface to global PM QoS via misc device. */
+/* User space interface to the CPU latency QoS via misc device. */
-static int pm_qos_power_open(struct inode *inode, struct file *filp)
+static int cpu_latency_qos_open(struct inode *inode, struct file *filp)
{
struct pm_qos_request *req;
@@ -354,7 +356,7 @@ static int pm_qos_power_open(struct inode *inode, struct file *filp)
return 0;
}
-static int pm_qos_power_release(struct inode *inode, struct file *filp)
+static int cpu_latency_qos_release(struct inode *inode, struct file *filp)
{
struct pm_qos_request *req = filp->private_data;
@@ -366,8 +368,8 @@ static int pm_qos_power_release(struct inode *inode, struct file *filp)
return 0;
}
-static ssize_t pm_qos_power_read(struct file *filp, char __user *buf,
- size_t count, loff_t *f_pos)
+static ssize_t cpu_latency_qos_read(struct file *filp, char __user *buf,
+ size_t count, loff_t *f_pos)
{
struct pm_qos_request *req = filp->private_data;
unsigned long flags;
@@ -377,14 +379,14 @@ static ssize_t pm_qos_power_read(struct file *filp, char __user *buf,
return -EINVAL;
spin_lock_irqsave(&pm_qos_lock, flags);
- value = pm_qos_get_value(&cpu_dma_constraints);
+ value = pm_qos_get_value(&cpu_latency_constraints);
spin_unlock_irqrestore(&pm_qos_lock, flags);
return simple_read_from_buffer(buf, count, f_pos, &value, sizeof(s32));
}
-static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf,
- size_t count, loff_t *f_pos)
+static ssize_t cpu_latency_qos_write(struct file *filp, const char __user *buf,
+ size_t count, loff_t *f_pos)
{
s32 value;
@@ -404,21 +406,21 @@ static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf,
return count;
}
-static const struct file_operations pm_qos_power_fops = {
- .write = pm_qos_power_write,
- .read = pm_qos_power_read,
- .open = pm_qos_power_open,
- .release = pm_qos_power_release,
+static const struct file_operations cpu_latency_qos_fops = {
+ .write = cpu_latency_qos_write,
+ .read = cpu_latency_qos_read,
+ .open = cpu_latency_qos_open,
+ .release = cpu_latency_qos_release,
.llseek = noop_llseek,
};
static struct miscdevice cpu_latency_qos_miscdev = {
.minor = MISC_DYNAMIC_MINOR,
.name = "cpu_dma_latency",
- .fops = &pm_qos_power_fops,
+ .fops = &cpu_latency_qos_fops,
};
-static int __init pm_qos_power_init(void)
+static int __init cpu_latency_qos_init(void)
{
int ret;
@@ -429,7 +431,7 @@ static int __init pm_qos_power_init(void)
return ret;
}
-late_initcall(pm_qos_power_init);
+late_initcall(cpu_latency_qos_init);
/* Definitions related to the frequency QoS below. */
--
2.16.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 22/28] drivers: tty: Call cpu_latency_qos_*() instead of pm_qos_*()
[not found] <1654227.8mz0SueHsU@kreacher>
2020-02-11 23:04 ` [PATCH 10/28] PM: QoS: Rename things related to the CPU latency QoS Rafael J. Wysocki
@ 2020-02-11 23:27 ` Rafael J. Wysocki
2020-02-12 10:35 ` Rafael J. Wysocki
2020-02-12 19:13 ` Greg Kroah-Hartman
1 sibling, 2 replies; 6+ messages in thread
From: Rafael J. Wysocki @ 2020-02-11 23:27 UTC (permalink / raw)
To: Linux PM; +Cc: LKML, Amit Kucheria, Greg Kroah-Hartman, linux-serial
From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Call cpu_latency_qos_add/update/remove_request() instead of
pm_qos_add/update/remove_request(), respectively, because the
latter are going to be dropped.
No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
drivers/tty/serial/8250/8250_omap.c | 7 +++----
drivers/tty/serial/omap-serial.c | 9 ++++-----
2 files changed, 7 insertions(+), 9 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
index 19f8d2f9e7ba..76fe72bfb8bb 100644
--- a/drivers/tty/serial/8250/8250_omap.c
+++ b/drivers/tty/serial/8250/8250_omap.c
@@ -569,7 +569,7 @@ static void omap8250_uart_qos_work(struct work_struct *work)
struct omap8250_priv *priv;
priv = container_of(work, struct omap8250_priv, qos_work);
- pm_qos_update_request(&priv->pm_qos_request, priv->latency);
+ cpu_latency_qos_update_request(&priv->pm_qos_request, priv->latency);
}
#ifdef CONFIG_SERIAL_8250_DMA
@@ -1224,8 +1224,7 @@ static int omap8250_probe(struct platform_device *pdev)
priv->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
priv->calc_latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
- pm_qos_add_request(&priv->pm_qos_request, PM_QOS_CPU_DMA_LATENCY,
- priv->latency);
+ cpu_latency_qos_add_request(&priv->pm_qos_request, priv->latency);
INIT_WORK(&priv->qos_work, omap8250_uart_qos_work);
spin_lock_init(&priv->rx_dma_lock);
@@ -1295,7 +1294,7 @@ static int omap8250_remove(struct platform_device *pdev)
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
serial8250_unregister_port(priv->line);
- pm_qos_remove_request(&priv->pm_qos_request);
+ cpu_latency_qos_remove_request(&priv->pm_qos_request);
device_init_wakeup(&pdev->dev, false);
return 0;
}
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
index ce2558767eee..e0b720ac754b 100644
--- a/drivers/tty/serial/omap-serial.c
+++ b/drivers/tty/serial/omap-serial.c
@@ -831,7 +831,7 @@ static void serial_omap_uart_qos_work(struct work_struct *work)
struct uart_omap_port *up = container_of(work, struct uart_omap_port,
qos_work);
- pm_qos_update_request(&up->pm_qos_request, up->latency);
+ cpu_latency_qos_update_request(&up->pm_qos_request, up->latency);
}
static void
@@ -1724,8 +1724,7 @@ static int serial_omap_probe(struct platform_device *pdev)
up->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
up->calc_latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
- pm_qos_add_request(&up->pm_qos_request,
- PM_QOS_CPU_DMA_LATENCY, up->latency);
+ cpu_latency_qos_add_request(&up->pm_qos_request, up->latency);
INIT_WORK(&up->qos_work, serial_omap_uart_qos_work);
platform_set_drvdata(pdev, up);
@@ -1759,7 +1758,7 @@ static int serial_omap_probe(struct platform_device *pdev)
pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_put_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
- pm_qos_remove_request(&up->pm_qos_request);
+ cpu_latency_qos_remove_request(&up->pm_qos_request);
device_init_wakeup(up->dev, false);
err_rs485:
err_port_line:
@@ -1777,7 +1776,7 @@ static int serial_omap_remove(struct platform_device *dev)
pm_runtime_dont_use_autosuspend(up->dev);
pm_runtime_put_sync(up->dev);
pm_runtime_disable(up->dev);
- pm_qos_remove_request(&up->pm_qos_request);
+ cpu_latency_qos_remove_request(&up->pm_qos_request);
device_init_wakeup(&dev->dev, false);
return 0;
--
2.16.4
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH 10/28] PM: QoS: Rename things related to the CPU latency QoS
2020-02-11 23:04 ` [PATCH 10/28] PM: QoS: Rename things related to the CPU latency QoS Rafael J. Wysocki
@ 2020-02-12 10:34 ` Rafael J. Wysocki
2020-02-12 19:13 ` Greg Kroah-Hartman
1 sibling, 0 replies; 6+ messages in thread
From: Rafael J. Wysocki @ 2020-02-12 10:34 UTC (permalink / raw)
To: linux-serial
Cc: Linux PM, LKML, Amit Kucheria, Greg Kroah-Hartman, Rafael J. Wysocki
On Wed, Feb 12, 2020 at 12:39 AM Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
>
> From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
>
> First, rename PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE to
> PM_QOS_CPU_LATENCY_DEFAULT_VALUE and update all of the code
> referring to it accordingly.
>
> Next, rename cpu_dma_constraints to cpu_latency_constraints, move
> the definition of it closer to the functions referring to it and
> update all of them accordingly. [While at it, add a comment to mark
> the start of the code related to the CPU latency QoS.]
>
> Finally, rename the pm_qos_power_*() family of functions and
> pm_qos_power_fops to cpu_latency_qos_*() and cpu_latency_qos_fops,
> respectively, and update the definition of cpu_latency_qos_miscdev.
> [While at it, update the miscdev interface code start comment.]
>
> No intentional functional impact.
>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Please note that the whole series is available here:
https://lore.kernel.org/linux-pm/1654227.8mz0SueHsU@kreacher/
> ---
> drivers/tty/serial/8250/8250_omap.c | 6 ++--
> drivers/tty/serial/omap-serial.c | 6 ++--
> include/linux/pm_qos.h | 2 +-
> kernel/power/qos.c | 56 +++++++++++++++++++------------------
> 4 files changed, 36 insertions(+), 34 deletions(-)
>
> diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
> index 6f343ca08440..19f8d2f9e7ba 100644
> --- a/drivers/tty/serial/8250/8250_omap.c
> +++ b/drivers/tty/serial/8250/8250_omap.c
> @@ -1222,8 +1222,8 @@ static int omap8250_probe(struct platform_device *pdev)
> DEFAULT_CLK_SPEED);
> }
>
> - priv->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
> - priv->calc_latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
> + priv->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
> + priv->calc_latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
> pm_qos_add_request(&priv->pm_qos_request, PM_QOS_CPU_DMA_LATENCY,
> priv->latency);
> INIT_WORK(&priv->qos_work, omap8250_uart_qos_work);
> @@ -1445,7 +1445,7 @@ static int omap8250_runtime_suspend(struct device *dev)
> if (up->dma && up->dma->rxchan)
> omap_8250_rx_dma_flush(up);
>
> - priv->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
> + priv->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
> schedule_work(&priv->qos_work);
>
> return 0;
> diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
> index 48017cec7f2f..ce2558767eee 100644
> --- a/drivers/tty/serial/omap-serial.c
> +++ b/drivers/tty/serial/omap-serial.c
> @@ -1722,8 +1722,8 @@ static int serial_omap_probe(struct platform_device *pdev)
> DEFAULT_CLK_SPEED);
> }
>
> - up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
> - up->calc_latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
> + up->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
> + up->calc_latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
> pm_qos_add_request(&up->pm_qos_request,
> PM_QOS_CPU_DMA_LATENCY, up->latency);
> INIT_WORK(&up->qos_work, serial_omap_uart_qos_work);
> @@ -1869,7 +1869,7 @@ static int serial_omap_runtime_suspend(struct device *dev)
>
> serial_omap_enable_wakeup(up, true);
>
> - up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
> + up->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
> schedule_work(&up->qos_work);
>
> return 0;
> diff --git a/include/linux/pm_qos.h b/include/linux/pm_qos.h
> index cb57e5918a25..a3e0bfc6c470 100644
> --- a/include/linux/pm_qos.h
> +++ b/include/linux/pm_qos.h
> @@ -28,7 +28,7 @@ enum pm_qos_flags_status {
> #define PM_QOS_LATENCY_ANY S32_MAX
> #define PM_QOS_LATENCY_ANY_NS ((s64)PM_QOS_LATENCY_ANY * NSEC_PER_USEC)
>
> -#define PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE (2000 * USEC_PER_SEC)
> +#define PM_QOS_CPU_LATENCY_DEFAULT_VALUE (2000 * USEC_PER_SEC)
> #define PM_QOS_RESUME_LATENCY_DEFAULT_VALUE PM_QOS_LATENCY_ANY
> #define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT PM_QOS_LATENCY_ANY
> #define PM_QOS_RESUME_LATENCY_NO_CONSTRAINT_NS PM_QOS_LATENCY_ANY_NS
> diff --git a/kernel/power/qos.c b/kernel/power/qos.c
> index 201b43bc6457..a6bf53e9db17 100644
> --- a/kernel/power/qos.c
> +++ b/kernel/power/qos.c
> @@ -56,14 +56,6 @@
> */
> static DEFINE_SPINLOCK(pm_qos_lock);
>
> -static struct pm_qos_constraints cpu_dma_constraints = {
> - .list = PLIST_HEAD_INIT(cpu_dma_constraints.list),
> - .target_value = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE,
> - .default_value = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE,
> - .no_constraint_value = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE,
> - .type = PM_QOS_MIN,
> -};
> -
> /**
> * pm_qos_read_value - Return the current effective constraint value.
> * @c: List of PM QoS constraint requests.
> @@ -227,6 +219,16 @@ bool pm_qos_update_flags(struct pm_qos_flags *pqf,
> return prev_value != curr_value;
> }
>
> +/* Definitions related to the CPU latency QoS. */
> +
> +static struct pm_qos_constraints cpu_latency_constraints = {
> + .list = PLIST_HEAD_INIT(cpu_latency_constraints.list),
> + .target_value = PM_QOS_CPU_LATENCY_DEFAULT_VALUE,
> + .default_value = PM_QOS_CPU_LATENCY_DEFAULT_VALUE,
> + .no_constraint_value = PM_QOS_CPU_LATENCY_DEFAULT_VALUE,
> + .type = PM_QOS_MIN,
> +};
> +
> /**
> * pm_qos_request - returns current system wide qos expectation
> * @pm_qos_class: Ignored.
> @@ -235,13 +237,13 @@ bool pm_qos_update_flags(struct pm_qos_flags *pqf,
> */
> int pm_qos_request(int pm_qos_class)
> {
> - return pm_qos_read_value(&cpu_dma_constraints);
> + return pm_qos_read_value(&cpu_latency_constraints);
> }
> EXPORT_SYMBOL_GPL(pm_qos_request);
>
> int pm_qos_request_active(struct pm_qos_request *req)
> {
> - return req->qos == &cpu_dma_constraints;
> + return req->qos == &cpu_latency_constraints;
> }
> EXPORT_SYMBOL_GPL(pm_qos_request_active);
>
> @@ -278,7 +280,7 @@ void pm_qos_add_request(struct pm_qos_request *req,
>
> trace_pm_qos_add_request(PM_QOS_CPU_DMA_LATENCY, value);
>
> - req->qos = &cpu_dma_constraints;
> + req->qos = &cpu_latency_constraints;
> cpu_latency_qos_update(req, PM_QOS_ADD_REQ, value);
> }
> EXPORT_SYMBOL_GPL(pm_qos_add_request);
> @@ -338,9 +340,9 @@ void pm_qos_remove_request(struct pm_qos_request *req)
> }
> EXPORT_SYMBOL_GPL(pm_qos_remove_request);
>
> -/* User space interface to global PM QoS via misc device. */
> +/* User space interface to the CPU latency QoS via misc device. */
>
> -static int pm_qos_power_open(struct inode *inode, struct file *filp)
> +static int cpu_latency_qos_open(struct inode *inode, struct file *filp)
> {
> struct pm_qos_request *req;
>
> @@ -354,7 +356,7 @@ static int pm_qos_power_open(struct inode *inode, struct file *filp)
> return 0;
> }
>
> -static int pm_qos_power_release(struct inode *inode, struct file *filp)
> +static int cpu_latency_qos_release(struct inode *inode, struct file *filp)
> {
> struct pm_qos_request *req = filp->private_data;
>
> @@ -366,8 +368,8 @@ static int pm_qos_power_release(struct inode *inode, struct file *filp)
> return 0;
> }
>
> -static ssize_t pm_qos_power_read(struct file *filp, char __user *buf,
> - size_t count, loff_t *f_pos)
> +static ssize_t cpu_latency_qos_read(struct file *filp, char __user *buf,
> + size_t count, loff_t *f_pos)
> {
> struct pm_qos_request *req = filp->private_data;
> unsigned long flags;
> @@ -377,14 +379,14 @@ static ssize_t pm_qos_power_read(struct file *filp, char __user *buf,
> return -EINVAL;
>
> spin_lock_irqsave(&pm_qos_lock, flags);
> - value = pm_qos_get_value(&cpu_dma_constraints);
> + value = pm_qos_get_value(&cpu_latency_constraints);
> spin_unlock_irqrestore(&pm_qos_lock, flags);
>
> return simple_read_from_buffer(buf, count, f_pos, &value, sizeof(s32));
> }
>
> -static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf,
> - size_t count, loff_t *f_pos)
> +static ssize_t cpu_latency_qos_write(struct file *filp, const char __user *buf,
> + size_t count, loff_t *f_pos)
> {
> s32 value;
>
> @@ -404,21 +406,21 @@ static ssize_t pm_qos_power_write(struct file *filp, const char __user *buf,
> return count;
> }
>
> -static const struct file_operations pm_qos_power_fops = {
> - .write = pm_qos_power_write,
> - .read = pm_qos_power_read,
> - .open = pm_qos_power_open,
> - .release = pm_qos_power_release,
> +static const struct file_operations cpu_latency_qos_fops = {
> + .write = cpu_latency_qos_write,
> + .read = cpu_latency_qos_read,
> + .open = cpu_latency_qos_open,
> + .release = cpu_latency_qos_release,
> .llseek = noop_llseek,
> };
>
> static struct miscdevice cpu_latency_qos_miscdev = {
> .minor = MISC_DYNAMIC_MINOR,
> .name = "cpu_dma_latency",
> - .fops = &pm_qos_power_fops,
> + .fops = &cpu_latency_qos_fops,
> };
>
> -static int __init pm_qos_power_init(void)
> +static int __init cpu_latency_qos_init(void)
> {
> int ret;
>
> @@ -429,7 +431,7 @@ static int __init pm_qos_power_init(void)
>
> return ret;
> }
> -late_initcall(pm_qos_power_init);
> +late_initcall(cpu_latency_qos_init);
>
> /* Definitions related to the frequency QoS below. */
>
> --
> 2.16.4
>
>
>
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 22/28] drivers: tty: Call cpu_latency_qos_*() instead of pm_qos_*()
2020-02-11 23:27 ` [PATCH 22/28] drivers: tty: Call cpu_latency_qos_*() instead of pm_qos_*() Rafael J. Wysocki
@ 2020-02-12 10:35 ` Rafael J. Wysocki
2020-02-12 19:13 ` Greg Kroah-Hartman
1 sibling, 0 replies; 6+ messages in thread
From: Rafael J. Wysocki @ 2020-02-12 10:35 UTC (permalink / raw)
To: linux-serial
Cc: Linux PM, LKML, Amit Kucheria, Greg Kroah-Hartman, Rafael J. Wysocki
On Wed, Feb 12, 2020 at 12:40 AM Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
>
> From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
>
> Call cpu_latency_qos_add/update/remove_request() instead of
> pm_qos_add/update/remove_request(), respectively, because the
> latter are going to be dropped.
>
> No intentional functional impact.
>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Please note that the whole series is available here:
https://lore.kernel.org/linux-pm/1654227.8mz0SueHsU@kreacher/
> ---
> drivers/tty/serial/8250/8250_omap.c | 7 +++----
> drivers/tty/serial/omap-serial.c | 9 ++++-----
> 2 files changed, 7 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/tty/serial/8250/8250_omap.c b/drivers/tty/serial/8250/8250_omap.c
> index 19f8d2f9e7ba..76fe72bfb8bb 100644
> --- a/drivers/tty/serial/8250/8250_omap.c
> +++ b/drivers/tty/serial/8250/8250_omap.c
> @@ -569,7 +569,7 @@ static void omap8250_uart_qos_work(struct work_struct *work)
> struct omap8250_priv *priv;
>
> priv = container_of(work, struct omap8250_priv, qos_work);
> - pm_qos_update_request(&priv->pm_qos_request, priv->latency);
> + cpu_latency_qos_update_request(&priv->pm_qos_request, priv->latency);
> }
>
> #ifdef CONFIG_SERIAL_8250_DMA
> @@ -1224,8 +1224,7 @@ static int omap8250_probe(struct platform_device *pdev)
>
> priv->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
> priv->calc_latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
> - pm_qos_add_request(&priv->pm_qos_request, PM_QOS_CPU_DMA_LATENCY,
> - priv->latency);
> + cpu_latency_qos_add_request(&priv->pm_qos_request, priv->latency);
> INIT_WORK(&priv->qos_work, omap8250_uart_qos_work);
>
> spin_lock_init(&priv->rx_dma_lock);
> @@ -1295,7 +1294,7 @@ static int omap8250_remove(struct platform_device *pdev)
> pm_runtime_put_sync(&pdev->dev);
> pm_runtime_disable(&pdev->dev);
> serial8250_unregister_port(priv->line);
> - pm_qos_remove_request(&priv->pm_qos_request);
> + cpu_latency_qos_remove_request(&priv->pm_qos_request);
> device_init_wakeup(&pdev->dev, false);
> return 0;
> }
> diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c
> index ce2558767eee..e0b720ac754b 100644
> --- a/drivers/tty/serial/omap-serial.c
> +++ b/drivers/tty/serial/omap-serial.c
> @@ -831,7 +831,7 @@ static void serial_omap_uart_qos_work(struct work_struct *work)
> struct uart_omap_port *up = container_of(work, struct uart_omap_port,
> qos_work);
>
> - pm_qos_update_request(&up->pm_qos_request, up->latency);
> + cpu_latency_qos_update_request(&up->pm_qos_request, up->latency);
> }
>
> static void
> @@ -1724,8 +1724,7 @@ static int serial_omap_probe(struct platform_device *pdev)
>
> up->latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
> up->calc_latency = PM_QOS_CPU_LATENCY_DEFAULT_VALUE;
> - pm_qos_add_request(&up->pm_qos_request,
> - PM_QOS_CPU_DMA_LATENCY, up->latency);
> + cpu_latency_qos_add_request(&up->pm_qos_request, up->latency);
> INIT_WORK(&up->qos_work, serial_omap_uart_qos_work);
>
> platform_set_drvdata(pdev, up);
> @@ -1759,7 +1758,7 @@ static int serial_omap_probe(struct platform_device *pdev)
> pm_runtime_dont_use_autosuspend(&pdev->dev);
> pm_runtime_put_sync(&pdev->dev);
> pm_runtime_disable(&pdev->dev);
> - pm_qos_remove_request(&up->pm_qos_request);
> + cpu_latency_qos_remove_request(&up->pm_qos_request);
> device_init_wakeup(up->dev, false);
> err_rs485:
> err_port_line:
> @@ -1777,7 +1776,7 @@ static int serial_omap_remove(struct platform_device *dev)
> pm_runtime_dont_use_autosuspend(up->dev);
> pm_runtime_put_sync(up->dev);
> pm_runtime_disable(up->dev);
> - pm_qos_remove_request(&up->pm_qos_request);
> + cpu_latency_qos_remove_request(&up->pm_qos_request);
> device_init_wakeup(&dev->dev, false);
>
> return 0;
> --
> 2.16.4
>
>
>
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 10/28] PM: QoS: Rename things related to the CPU latency QoS
2020-02-11 23:04 ` [PATCH 10/28] PM: QoS: Rename things related to the CPU latency QoS Rafael J. Wysocki
2020-02-12 10:34 ` Rafael J. Wysocki
@ 2020-02-12 19:13 ` Greg Kroah-Hartman
1 sibling, 0 replies; 6+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-12 19:13 UTC (permalink / raw)
To: Rafael J. Wysocki; +Cc: Linux PM, LKML, Amit Kucheria, linux-serial
On Wed, Feb 12, 2020 at 12:04:31AM +0100, Rafael J. Wysocki wrote:
> From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
>
> First, rename PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE to
> PM_QOS_CPU_LATENCY_DEFAULT_VALUE and update all of the code
> referring to it accordingly.
>
> Next, rename cpu_dma_constraints to cpu_latency_constraints, move
> the definition of it closer to the functions referring to it and
> update all of them accordingly. [While at it, add a comment to mark
> the start of the code related to the CPU latency QoS.]
>
> Finally, rename the pm_qos_power_*() family of functions and
> pm_qos_power_fops to cpu_latency_qos_*() and cpu_latency_qos_fops,
> respectively, and update the definition of cpu_latency_qos_miscdev.
> [While at it, update the miscdev interface code start comment.]
>
> No intentional functional impact.
>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> ---
> drivers/tty/serial/8250/8250_omap.c | 6 ++--
> drivers/tty/serial/omap-serial.c | 6 ++--
> include/linux/pm_qos.h | 2 +-
> kernel/power/qos.c | 56 +++++++++++++++++++------------------
> 4 files changed, 36 insertions(+), 34 deletions(-)
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 22/28] drivers: tty: Call cpu_latency_qos_*() instead of pm_qos_*()
2020-02-11 23:27 ` [PATCH 22/28] drivers: tty: Call cpu_latency_qos_*() instead of pm_qos_*() Rafael J. Wysocki
2020-02-12 10:35 ` Rafael J. Wysocki
@ 2020-02-12 19:13 ` Greg Kroah-Hartman
1 sibling, 0 replies; 6+ messages in thread
From: Greg Kroah-Hartman @ 2020-02-12 19:13 UTC (permalink / raw)
To: Rafael J. Wysocki; +Cc: Linux PM, LKML, Amit Kucheria, linux-serial
On Wed, Feb 12, 2020 at 12:27:04AM +0100, Rafael J. Wysocki wrote:
> From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
>
> Call cpu_latency_qos_add/update/remove_request() instead of
> pm_qos_add/update/remove_request(), respectively, because the
> latter are going to be dropped.
>
> No intentional functional impact.
>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> ---
> drivers/tty/serial/8250/8250_omap.c | 7 +++----
> drivers/tty/serial/omap-serial.c | 9 ++++-----
> 2 files changed, 7 insertions(+), 9 deletions(-)
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2020-02-12 19:13 UTC | newest]
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2020-02-11 23:04 ` [PATCH 10/28] PM: QoS: Rename things related to the CPU latency QoS Rafael J. Wysocki
2020-02-12 10:34 ` Rafael J. Wysocki
2020-02-12 19:13 ` Greg Kroah-Hartman
2020-02-11 23:27 ` [PATCH 22/28] drivers: tty: Call cpu_latency_qos_*() instead of pm_qos_*() Rafael J. Wysocki
2020-02-12 10:35 ` Rafael J. Wysocki
2020-02-12 19:13 ` Greg Kroah-Hartman
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