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[RFC,2/8] x86: add CPU field to struct thread_info

Message ID 20210914121036.3975026-3-ardb@kernel.org (mailing list archive)
State New, archived
Headers show
Series Move task_struct::cpu back into thread_info | expand

Commit Message

Ard Biesheuvel Sept. 14, 2021, 12:10 p.m. UTC
The CPU field will be moved back into thread_info even when
THREAD_INFO_IN_TASK is enabled, so add it back to x86's definition of
struct thread_info.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
 arch/x86/include/asm/thread_info.h | 3 +++
 1 file changed, 3 insertions(+)

Comments

Borislav Petkov Sept. 21, 2021, 12:54 p.m. UTC | #1
On Tue, Sep 14, 2021 at 02:10:30PM +0200, Ard Biesheuvel wrote:
> The CPU field will be moved back into thread_info even when
> THREAD_INFO_IN_TASK is enabled, so add it back to x86's definition of
> struct thread_info.
> 
> Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
> ---
>  arch/x86/include/asm/thread_info.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
> index cf132663c219..ebec69c35e95 100644
> --- a/arch/x86/include/asm/thread_info.h
> +++ b/arch/x86/include/asm/thread_info.h
> @@ -57,6 +57,9 @@ struct thread_info {
>  	unsigned long		flags;		/* low level flags */
>  	unsigned long		syscall_work;	/* SYSCALL_WORK_ flags */
>  	u32			status;		/* thread synchronous flags */
> +#ifdef CONFIG_SMP
> +	u32			cpu;		/* current CPU */
> +#endif
>  };
>  
>  #define INIT_THREAD_INFO(tsk)			\
> -- 

Acked-by: Borislav Petkov <bp@suse.de>
diff mbox series

Patch

diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
index cf132663c219..ebec69c35e95 100644
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h
@@ -57,6 +57,9 @@  struct thread_info {
 	unsigned long		flags;		/* low level flags */
 	unsigned long		syscall_work;	/* SYSCALL_WORK_ flags */
 	u32			status;		/* thread synchronous flags */
+#ifdef CONFIG_SMP
+	u32			cpu;		/* current CPU */
+#endif
 };
 
 #define INIT_THREAD_INFO(tsk)			\