[merged mm-stable] percpu-add-__this_cpu_try_cmpxchg.patch removed from -mm tree

[merged mm-stable] percpu-add-__this_cpu_try_cmpxchg.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: percpu: add __this_cpu_try_cmpxchg()
has been removed from the -mm tree.  Its filename was
     percpu-add-__this_cpu_try_cmpxchg.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Uros Bizjak <ubizjak@gmail.com>
Subject: percpu: add __this_cpu_try_cmpxchg()
Date: Tue, 28 May 2024 16:43:13 +0200

Add __this_cpu_try_cmpxchg() version of the percpu op.

Link: https://lkml.kernel.org/r/20240528144345.5980-1-ubizjak@gmail.com
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Acked-by: Dennis Zhou <dennis@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/percpu-defs.h |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/include/linux/percpu-defs.h~percpu-add-__this_cpu_try_cmpxchg
+++ a/include/linux/percpu-defs.h
@@ -475,6 +475,12 @@ do {									\
 	raw_cpu_cmpxchg(pcp, oval, nval);				\
 })
 
+#define __this_cpu_try_cmpxchg(pcp, ovalp, nval)			\
+({									\
+	__this_cpu_preempt_check("try_cmpxchg");			\
+	raw_cpu_try_cmpxchg(pcp, ovalp, nval);				\
+})
+
 #define __this_cpu_sub(pcp, val)	__this_cpu_add(pcp, -(typeof(pcp))(val))
 #define __this_cpu_inc(pcp)		__this_cpu_add(pcp, 1)
 #define __this_cpu_dec(pcp)		__this_cpu_sub(pcp, 1)
_

Patches currently in -mm which might be from ubizjak@gmail.com are

fork-use-this_cpu_try_cmpxchg-in-try_release_thread_stack_to_cache.patch
fork-use-this_cpu_try_cmpxchg-in-try_release_thread_stack_to_cache-fix.patch