kbuild: use $(CFLAGS_GCOV) in the prefer-atomic try-run test

Patch series "kbuild: GCOV cleanups following the prefer-atomic fix".

Two cleanups Peter Oberparleiter suggested while reviewing commit
56cb9b7d96b2 ("gcov: use atomic counter updates to fix concurrent access
crashes"):

https://lore.kernel.org/e1b6e768-51af-468b-a729-0ed3fceef2f1@linux.ibm.com

Patch 1 makes the prefer-atomic try-run test reuse $(CFLAGS_GCOV) instead
of spelling the flags out again, so the test compiles with the exact GCOV
flags, -fno-tree-loop-im included.

Patch 2 moves the CFLAGS_GCOV block into scripts/Makefile.gcov, included
via include-$(CONFIG_GCOV_KERNEL) like the other instrumentation
makefiles.  The try-run also stops running on builds without GCOV.


This patch (of 2):

Reference $(CFLAGS_GCOV) in the try-run test introduced by
commit 56cb9b7d96b2 ("gcov: use atomic counter updates to fix
concurrent access crashes"), otherwise it can miss potential future
changes in the list of flags used for GCOV profiling like it misses
-fno-tree-loop-im at the moment.

The outcome of the test is unchanged: -fno-tree-loop-im does not affect
the undefined symbols the test compares.

Link: https://lore.kernel.org/20261001-b4-prep-gcov-v1-0-794792e06f24@virtuozzo.com
Link: https://lore.kernel.org/20261001-b4-prep-gcov-v1-1-794792e06f24@virtuozzo.com
Signed-off-by: Konstantin Khorenko <khorenko@virtuozzo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Suggested-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicolas Schier <nsc@kernel.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Mikhail Zaslonko <zaslonko@linux.ibm.com>

0 files changed, 0 insertions, 0 deletions