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Date: Thu, 26 Jul 2012 20:39:11 -0600
From: Toshi Kani <toshi.kani@...com>
To: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: lenb@...nel.org, linux-acpi@...r.kernel.org,
linux-kernel@...r.kernel.org, joe@...ches.com,
isimatu.yasuaki@...fujitsu.com, liuj97@...il.com,
srivatsa.bhat@...ux.vnet.ibm.com, prarit@...hat.com,
imammedo@...hat.com, vijaymohan.pandarathil@...com
Subject: Re: [PATCH v3 2/4] ACPI: Update CPU hotplug messages
On Thu, 2012-07-26 at 13:23 -0600, Bjorn Helgaas wrote:
> On Wed, Jul 25, 2012 at 5:12 PM, Toshi Kani <toshi.kani@...com> wrote:
> > Updated CPU hotplug log messages with acpi_pr_<level>(),
> > dev_<level>() and pr_<level>(). Some messages are also
> > changed for clarity.
> >
> > Signed-off-by: Toshi Kani <toshi.kani@...com>
> > Tested-by: Vijay Mohan Pandarathil <vijaymohan.pandarathil@...com>
> > ---
> > drivers/acpi/processor_driver.c | 36 +++++++++++++++++++++---------------
> > 1 files changed, 21 insertions(+), 15 deletions(-)
> >
> > diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
> > index a6bdeaa..225f252 100644
> > --- a/drivers/acpi/processor_driver.c
> > +++ b/drivers/acpi/processor_driver.c
> > @@ -282,7 +282,9 @@ static int acpi_processor_get_info(struct acpi_device *device)
> > /* Declared with "Processor" statement; match ProcessorID */
> > status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer);
> > if (ACPI_FAILURE(status)) {
> > - printk(KERN_ERR PREFIX "Evaluating processor object\n");
> > + acpi_pr_err(pr->handle,
> > + "Failed to evaluate processor object (0x%x)\n",
> > + status);
>
> This looks like it could be a dev_err().
Agreed. Changed to use dev_err().
> > return -ENODEV;
> > }
> >
> > @@ -301,8 +303,9 @@ static int acpi_processor_get_info(struct acpi_device *device)
> > status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID,
> > NULL, &value);
> > if (ACPI_FAILURE(status)) {
> > - printk(KERN_ERR PREFIX
> > - "Evaluating processor _UID [%#x]\n", status);
> > + acpi_pr_err(pr->handle,
> > + "Failed to evaluate processor _UID (0x%x)\n",
> > + status);
>
> And this.
Changed to use dev_err().
> > return -ENODEV;
> > }
> > device_declaration = 1;
> > @@ -345,7 +348,7 @@ static int acpi_processor_get_info(struct acpi_device *device)
> > if (!object.processor.pblk_address)
> > ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n"));
> > else if (object.processor.pblk_length != 6)
> > - printk(KERN_ERR PREFIX "Invalid PBLK length [%d]\n",
> > + acpi_pr_err(pr->handle, "Invalid PBLK length [%d]\n",
>
> And this.
Changed to use dev_err().
>
> > object.processor.pblk_length);
> > else {
> > pr->throttling.address = object.processor.pblk_address;
> > @@ -429,8 +432,8 @@ static int acpi_cpu_soft_notify(struct notifier_block *nfb,
> > * Initialize missing things
> > */
> > if (pr->flags.need_hotplug_init) {
> > - printk(KERN_INFO "Will online and init hotplugged "
> > - "CPU: %d\n", pr->id);
> > + pr_info("Will online and init hotplugged CPU: %d\n",
> > + pr->id);
> > WARN(acpi_processor_start(pr), "Failed to start CPU:"
> > " %d\n", pr->id);
> > pr->flags.need_hotplug_init = 0;
> > @@ -491,14 +494,16 @@ static __ref int acpi_processor_start(struct acpi_processor *pr)
> > &pr->cdev->device.kobj,
> > "thermal_cooling");
> > if (result) {
> > - printk(KERN_ERR PREFIX "Create sysfs link\n");
> > + dev_err(&device->dev,
> > + "Failed to create sysfs link 'thermal_cooling'\n");
> > goto err_thermal_unregister;
> > }
> > result = sysfs_create_link(&pr->cdev->device.kobj,
> > &device->dev.kobj,
> > "device");
> > if (result) {
> > - printk(KERN_ERR PREFIX "Create sysfs link\n");
> > + dev_err(&pr->cdev->device,
> > + "Failed to create sysfs link 'device'\n");
> > goto err_remove_sysfs_thermal;
> > }
> >
> > @@ -560,8 +565,7 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device)
> > */
> > if (per_cpu(processor_device_array, pr->id) != NULL &&
> > per_cpu(processor_device_array, pr->id) != device) {
> > - printk(KERN_WARNING "BIOS reported wrong ACPI id "
> > - "for the processor\n");
> > + pr_warn("BIOS reported wrong ACPI id for the processor\n");
>
> And this.
Changed to use dev_warn().
> > result = -ENODEV;
> > goto err_free_cpumask;
> > }
> > @@ -715,7 +719,7 @@ static void acpi_processor_hotplug_notify(acpi_handle handle,
> >
> > result = acpi_processor_device_add(handle, &device);
> > if (result) {
> > - pr_err(PREFIX "Unable to add the device\n");
> > + acpi_pr_err(handle, "Unable to add the device\n");
> > break;
> > }
> >
> > @@ -727,17 +731,19 @@ static void acpi_processor_hotplug_notify(acpi_handle handle,
> > "received ACPI_NOTIFY_EJECT_REQUEST\n"));
> >
> > if (acpi_bus_get_device(handle, &device)) {
> > - pr_err(PREFIX "Device don't exist, dropping EJECT\n");
> > + acpi_pr_err(handle,
> > + "Device don't exist, dropping EJECT\n");
> > break;
> > }
> > if (!acpi_driver_data(device)) {
> > - pr_err(PREFIX "Driver data is NULL, dropping EJECT\n");
> > + acpi_pr_err(handle,
> > + "Driver data is NULL, dropping EJECT\n");
>
> And this.
No change since it is called directly from the handler.
> > break;
> > }
> >
> > ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL);
> > if (!ej_event) {
> > - pr_err(PREFIX "No memory, dropping EJECT\n");
> > + acpi_pr_err(handle, "No memory, dropping EJECT\n");
>
> And this.
No change since it is called directly from the handler.
> > break;
> > }
> >
> > @@ -847,7 +853,7 @@ static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr)
> > * and do it when the CPU gets online the first time
> > * TBD: Cleanup above functions and try to do this more elegant.
> > */
> > - printk(KERN_INFO "CPU %d got hotplugged\n", pr->id);
> > + pr_info("CPU %d got hotplugged\n", pr->id);
>
> And this. The caller (acpi_processor_get_info()) has an acpi_device
> *, so we should be able to use it here.
I think pr_info() is fine since it is a normal message and already has
CPU number in the message.
Thanks for the review!
-Toshi
> > pr->flags.need_hotplug_init = 1;
> >
> > return AE_OK;
> > --
> > 1.7.7.6
> >
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