[PATCH 5.10 18/63] arc: add support for TIF_NOTIFY_SIGNAL

[Greg Kroah-Hartman]

From: Jens Axboe 

[ Upstream commit 53855e12588743ea128ee31f913d1c6e2f1d32c8 ]

Wire up TIF_NOTIFY_SIGNAL handling for arc.

Cc: linux-snps-arc@lists.infradead.org
Acked-by: Vineet Gupta 
Signed-off-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman 
---
 arch/arc/include/asm/thread_info.h |4 +++-
 arch/arc/kernel/entry.S|3 ++-
 arch/arc/kernel/signal.c   |2 +-
 3 files changed, 6 insertions(+), 3 deletions(-)

--- a/arch/arc/include/asm/thread_info.h
+++ b/arch/arc/include/asm/thread_info.h
@@ -79,6 +79,7 @@ static inline __attribute_const__ struct
 #define TIF_SIGPENDING 2   /* signal pending */
 #define TIF_NEED_RESCHED   3   /* rescheduling necessary */
 #define TIF_SYSCALL_AUDIT  4   /* syscall auditing active */
+#define TIF_NOTIFY_SIGNAL  5   /* signal notifications exist */
 #define TIF_SYSCALL_TRACE  15  /* syscall trace active */
 
 /* true if poll_idle() is polling TIF_NEED_RESCHED */
@@ -89,11 +90,12 @@ static inline __attribute_const__ struct
 #define _TIF_SIGPENDING(1

Re: [PATCH v3] arch: rename all internal names __xchg to __arch_xchg

[Heiko Carstens]

On Fri, Dec 30, 2022 at 03:15:52PM +0100, Andrzej Hajda wrote:
> __xchg will be used for non-atomic xchg macro.
> 
> Signed-off-by: Andrzej Hajda 
> Reviewed-by: Arnd Bergmann 
> ---
> v2: squashed all arch patches into one
> v3: fixed alpha/xchg_local, thx to l...@intel.com
> ---
...
>  arch/s390/include/asm/cmpxchg.h  | 4 ++--
> diff --git a/arch/s390/include/asm/cmpxchg.h b/arch/s390/include/asm/cmpxchg.h
> index 84c3f0d576c5b1..efc16f4aac8643 100644
> --- a/arch/s390/include/asm/cmpxchg.h
> +++ b/arch/s390/include/asm/cmpxchg.h
> @@ -14,7 +14,7 @@
>  
>  void __xchg_called_with_bad_pointer(void);
>  
> -static __always_inline unsigned long __xchg(unsigned long x,
> +static __always_inline unsigned long __arch_xchg(unsigned long x,
>   unsigned long address, int size)

Please adjust the alignment of the second line.

> @@ -77,7 +77,7 @@ static __always_inline unsigned long __xchg(unsigned long x,
>   __typeof__(*(ptr)) __ret;   \
>   \
>   __ret = (__typeof__(*(ptr)))\
> - __xchg((unsigned long)(x), (unsigned long)(ptr),\
> + __arch_xchg((unsigned long)(x), (unsigned long)(ptr),   \
>  sizeof(*(ptr))); \

Same here.

The same is true for a couple of other architectures - not sure if
they care however.

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