timers: Use del_timer_shutdown() before freeing timers

[RFC][PATCH v2 05/31] timers: ACPI: Use del_timer_shutdown() before freeing timer

Posted by Steven Rostedt 3 years, 5 months ago

From: "Steven Rostedt (Google)" <rostedt@goodmis.org>

Before a timer is freed, del_timer_shutdown() must be called.

Link: https://lore.kernel.org/all/20220407161745.7d6754b3@gandalf.local.home/

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Len Brown <lenb@kernel.org>
Cc: James Morse <james.morse@arm.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Shuai Xue <xueshuai@linux.alibaba.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Jarkko Sakkinen <jarkko@kernel.org>
Cc: linux-acpi@vger.kernel.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
---
 drivers/acpi/apei/ghes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index 80ad530583c9..916b952b14d0 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -1405,7 +1405,7 @@ static int ghes_remove(struct platform_device *ghes_dev)
 	ghes->flags |= GHES_EXITING;
 	switch (generic->notify.type) {
 	case ACPI_HEST_NOTIFY_POLLED:
-		del_timer_sync(&ghes->timer);
+		del_timer_shutdown(&ghes->timer);
 		break;
 	case ACPI_HEST_NOTIFY_EXTERNAL:
 		free_irq(ghes->irq, ghes);
-- 
2.35.1

Re: [RFC][PATCH v2 05/31] timers: ACPI: Use del_timer_shutdown() before freeing timer

Posted by Jarkko Sakkinen 3 years, 5 months ago

On Thu, Oct 27, 2022 at 11:05:30AM -0400, Steven Rostedt wrote:
> From: "Steven Rostedt (Google)" <rostedt@goodmis.org>
> 
> Before a timer is freed, del_timer_shutdown() must be called.
> 
> Link: https://lore.kernel.org/all/20220407161745.7d6754b3@gandalf.local.home/
> 
> Cc: "Rafael J. Wysocki" <rafael@kernel.org>
> Cc: Len Brown <lenb@kernel.org>
> Cc: James Morse <james.morse@arm.com>
> Cc: Tony Luck <tony.luck@intel.com>
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: Shuai Xue <xueshuai@linux.alibaba.com>
> Cc: Dave Hansen <dave.hansen@linux.intel.com>
> Cc: Jarkko Sakkinen <jarkko@kernel.org>
> Cc: linux-acpi@vger.kernel.org
> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
> ---
>  drivers/acpi/apei/ghes.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
> index 80ad530583c9..916b952b14d0 100644
> --- a/drivers/acpi/apei/ghes.c
> +++ b/drivers/acpi/apei/ghes.c
> @@ -1405,7 +1405,7 @@ static int ghes_remove(struct platform_device *ghes_dev)
>  	ghes->flags |= GHES_EXITING;
>  	switch (generic->notify.type) {
>  	case ACPI_HEST_NOTIFY_POLLED:
> -		del_timer_sync(&ghes->timer);
> +		del_timer_shutdown(&ghes->timer);
>  		break;
>  	case ACPI_HEST_NOTIFY_EXTERNAL:
>  		free_irq(ghes->irq, ghes);
> -- 
> 2.35.1


Acked-by: Jarkko Sakkinen <jarkko@kernel.org>

BR, Jarkko

Re: [RFC][PATCH v2 05/31] timers: ACPI: Use del_timer_shutdown() before freeing timer

Posted by Rafael J. Wysocki 3 years, 5 months ago

On Thu, Oct 27, 2022 at 5:09 PM Steven Rostedt <rostedt@goodmis.org> wrote:
>
> From: "Steven Rostedt (Google)" <rostedt@goodmis.org>
>
> Before a timer is freed, del_timer_shutdown() must be called.
>
> Link: https://lore.kernel.org/all/20220407161745.7d6754b3@gandalf.local.home/
>
> Cc: "Rafael J. Wysocki" <rafael@kernel.org>
> Cc: Len Brown <lenb@kernel.org>
> Cc: James Morse <james.morse@arm.com>
> Cc: Tony Luck <tony.luck@intel.com>
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: Shuai Xue <xueshuai@linux.alibaba.com>
> Cc: Dave Hansen <dave.hansen@linux.intel.com>
> Cc: Jarkko Sakkinen <jarkko@kernel.org>
> Cc: linux-acpi@vger.kernel.org
> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>

Please add "APEI: ghes:" to the subject after "ACPI:".

Apart from this

Acked-by: Rafael J. Wysocki <rafael@kernel.org>

> ---
>  drivers/acpi/apei/ghes.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
> index 80ad530583c9..916b952b14d0 100644
> --- a/drivers/acpi/apei/ghes.c
> +++ b/drivers/acpi/apei/ghes.c
> @@ -1405,7 +1405,7 @@ static int ghes_remove(struct platform_device *ghes_dev)
>         ghes->flags |= GHES_EXITING;
>         switch (generic->notify.type) {
>         case ACPI_HEST_NOTIFY_POLLED:
> -               del_timer_sync(&ghes->timer);
> +               del_timer_shutdown(&ghes->timer);
>                 break;
>         case ACPI_HEST_NOTIFY_EXTERNAL:
>                 free_irq(ghes->irq, ghes);
> --
> 2.35.1