[folded-merged] kcov-load-acquire-coverage-count-in-user-space-code-v2.patch removed from -mm tree

[folded-merged] kcov-load-acquire-coverage-count-in-user-space-code-v2.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: kcov-load-acquire-coverage-count-in-user-space-code-v2
has been removed from the -mm tree.  Its filename was
     kcov-load-acquire-coverage-count-in-user-space-code-v2.patch

This patch was dropped because it was folded into kcov-load-acquire-coverage-count-in-user-space-code.patch

------------------------------------------------------
From: Soham Bagchi <soham.bagchi@utah.edu>
Subject: kcov-load-acquire-coverage-count-in-user-space-code-v2
Date: Sun, 3 Aug 2025 12:05:58 -0600

note for load-acquire shifted to block comment in code rather than in the
preceding paragraphs, per Marco

Link: https://lkml.kernel.org/r/20250803180558.2967962-1-soham.bagchi@utah.edu
Signed-off-by: Soham Bagchi <soham.bagchi@utah.edu>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Marco Elver <elver@google.com>
Cc: Thomas Gleinxer <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 Documentation/dev-tools/kcov.rst |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

--- a/Documentation/dev-tools/kcov.rst~kcov-load-acquire-coverage-count-in-user-space-code-v2
+++ a/Documentation/dev-tools/kcov.rst
@@ -287,11 +287,6 @@ handle instance id.
 The following program demonstrates using KCOV to collect coverage from both
 local tasks spawned by the process and the global task that handles USB bus #1:
 
-The user-space code for KCOV should also use an acquire to fetch the count
-of coverage entries in the shared buffer. This acquire pairs with the
-corresponding write memory barrier (smp_wmb()) on the kernel-side in
-kcov_move_area().
-
 .. code-block:: c
 
     /* Same includes and defines as above. */
@@ -366,6 +361,11 @@ kcov_move_area().
 	 */
 	sleep(2);
 
+        /*
+         * The load to the coverage count should be an acquire to pair with
+         * pair with the corresponding write memory barrier (smp_wmb()) on
+         * the kernel-side in kcov_move_area().
+         */
 	n = __atomic_load_n(&cover[0], __ATOMIC_ACQUIRE);
 	for (i = 0; i < n; i++)
 		printf("0x%lx\n", cover[i + 1]);
_

Patches currently in -mm which might be from soham.bagchi@utah.edu are

kcov-use-write-memory-barrier-after-memcpy-in-kcov_move_area.patch
kcov-load-acquire-coverage-count-in-user-space-code.patch