+ revert-printf-compile-the-kunit-test-with-disable_branch_profiling-disable_branch_profiling.patch added to mm-nonmm-unstable branch

+ revert-printf-compile-the-kunit-test-with-disable_branch_profiling-disable_branch_profiling.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: Revert "printf: Compile the kunit test with DISABLE_BRANCH_PROFILING DISABLE_BRANCH_PROFILING"
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     revert-printf-compile-the-kunit-test-with-disable_branch_profiling-disable_branch_profiling.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/revert-printf-compile-the-kunit-test-with-disable_branch_profiling-disable_branch_profiling.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Petr Mladek <pmladek@suse.com>
Subject: Revert "printf: Compile the kunit test with DISABLE_BRANCH_PROFILING DISABLE_BRANCH_PROFILING"
Date: Tue, 7 Jul 2026 15:55:22 +0200

This reverts commit 8901ac9d2c7eb8ed7ae5e749bf13ecb3b6062488.

The commit 94bfc7f3b0c7 ("err.h: use __always_inline on all error pointer
helpers") fixes the problem with a dead code elimination by always
inlining IS_ERR() function.  It prevents the related linker failures as
well.

The workaround with disabling branch profiling is not longer necessary.

Link: https://lore.kernel.org/20260707135522.120447-1-pmladek@suse.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Closes: https://lore.kernel.org/r/ah6WDkwO8eYY5f2a@ashevche-desk.local
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Aleksander Lobakin <aleksander.lobakin@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: David Laight <david.laight.linux@gmail.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/tests/Makefile |    2 --
 1 file changed, 2 deletions(-)

--- a/lib/tests/Makefile~revert-printf-compile-the-kunit-test-with-disable_branch_profiling-disable_branch_profiling
+++ a/lib/tests/Makefile
@@ -41,8 +41,6 @@ obj-$(CONFIG_MEMCPY_KUNIT_TEST) += memcp
 obj-$(CONFIG_MIN_HEAP_KUNIT_TEST) += min_heap_kunit.o
 CFLAGS_overflow_kunit.o = $(call cc-disable-warning, tautological-constant-out-of-range-compare)
 obj-$(CONFIG_OVERFLOW_KUNIT_TEST) += overflow_kunit.o
-# GCC < 12.1 can miscompile errptr() test when branch profiling is enabled.
-CFLAGS_printf_kunit.o += -DDISABLE_BRANCH_PROFILING
 obj-$(CONFIG_PRANDOM_KUNIT_TEST) += random32_kunit.o
 obj-$(CONFIG_PRINTF_KUNIT_TEST) += printf_kunit.o
 obj-$(CONFIG_RANDSTRUCT_KUNIT_TEST) += randstruct_kunit.o
_

Patches currently in -mm which might be from pmladek@suse.com are

revert-printf-compile-the-kunit-test-with-disable_branch_profiling-disable_branch_profiling.patch