diff mbox series

x86/sgx: Remove unnecessary try_to_freeze()

Message ID 20231213090343.1070577-1-haokexin@gmail.com (mailing list archive)
State New, archived
Headers show
Series x86/sgx: Remove unnecessary try_to_freeze() | expand

Commit Message

Kevin Hao Dec. 13, 2023, 9:03 a.m. UTC
A freezable kernel thread can enter frozen state during freezing by
either calling try_to_freeze() or using wait_event_freezable() and its
variants. However, there is no need to use both methods simultaneously.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Cc: Jarkko Sakkinen <jarkko@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Pavel Machek <pavel@ucw.cz>
---
 arch/x86/kernel/cpu/sgx/main.c | 3 ---
 1 file changed, 3 deletions(-)

Comments

Huang, Kai Dec. 13, 2023, 11:52 a.m. UTC | #1
On Wed, 2023-12-13 at 17:03 +0800, Kevin Hao wrote:
> A freezable kernel thread can enter frozen state during freezing by
> either calling try_to_freeze() or using wait_event_freezable() and its
> variants. However, there is no need to use both methods simultaneously.
> 
> Signed-off-by: Kevin Hao <haokexin@gmail.com>
> Cc: Jarkko Sakkinen <jarkko@kernel.org>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Borislav Petkov <bp@alien8.de>
> Cc: "Rafael J. Wysocki" <rafael@kernel.org>
> Cc: Pavel Machek <pavel@ucw.cz>
> ---
>  arch/x86/kernel/cpu/sgx/main.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/arch/x86/kernel/cpu/sgx/main.c b/arch/x86/kernel/cpu/sgx/main.c
> index 166692f2d501..318165b3ff78 100644
> --- a/arch/x86/kernel/cpu/sgx/main.c
> +++ b/arch/x86/kernel/cpu/sgx/main.c
> @@ -404,9 +404,6 @@ static int ksgxd(void *p)
>  	WARN_ON(__sgx_sanitize_pages(&sgx_dirty_page_list));
>  
>  	while (!kthread_should_stop()) {
> -		if (try_to_freeze())
> -			continue;
> -
>  		wait_event_freezable(ksgxd_waitq,
>  				     kthread_should_stop() ||
>  				     sgx_should_reclaim(SGX_NR_HIGH_PAGES));

Reviewed-by: Kai Huang <kai.huang@intel.com>
diff mbox series

Patch

diff --git a/arch/x86/kernel/cpu/sgx/main.c b/arch/x86/kernel/cpu/sgx/main.c
index 166692f2d501..318165b3ff78 100644
--- a/arch/x86/kernel/cpu/sgx/main.c
+++ b/arch/x86/kernel/cpu/sgx/main.c
@@ -404,9 +404,6 @@  static int ksgxd(void *p)
 	WARN_ON(__sgx_sanitize_pages(&sgx_dirty_page_list));
 
 	while (!kthread_should_stop()) {
-		if (try_to_freeze())
-			continue;
-
 		wait_event_freezable(ksgxd_waitq,
 				     kthread_should_stop() ||
 				     sgx_should_reclaim(SGX_NR_HIGH_PAGES));