Messages in this thread Patch in this message | | | From | SeongJae Park <> | Subject | [PATCH] mm/damon: Fix missing-prototype build warning for 'damon_pa_apply_scheme()' | Date | Mon, 25 Oct 2021 06:42:20 +0000 |
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Kernel test robot found[1] commit ccd554f15bb1 ("mm/damon/paddr: support the pageout scheme") on the -mm tree[2], which is introduced by the patch titled 'mm-damon-paddr-support-the-pageout-scheme.patch'[3] introduces following build warning, and therefore the build fails if 'CONFIG_WERROR=y'.
linux/mm/damon/paddr.c:216:5: error: no previous prototype for ‘damon_pa_apply_scheme’ [-Werror=missing-prototypes] int damon_pa_apply_scheme(struct damon_ctx *ctx, struct damon_target *t, ^~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors linux/scripts/Makefile.build:277: recipe for target 'mm/damon/paddr.o' failed
This commit fixes the warning by adding the missed prototype in the header file.
Note: Because the reported '.config' introduces warnings on not only DAMON but also other subsystems, I tested for only DAMON by adding the below compiler flag in mm/damon/Makefile.
ccflags-$(CONFIG_DAMON_PADDR) += -Werror -Wmissing-prototypes
[1] https://lore.kernel.org/lkml/202110250029.5rftt73s-lkp@intel.com/ [2] https://github.com/hnaz/linux-mm/commit/ccd554f15bb1cd977d740c1ea8241ecf95108c94 [3] https://lore.kernel.org/mm-commits/20211019213137.91_rr1GrX%25akpm@linux-foundation.org/
Fixes: ccd554f15bb1 ("mm/damon/paddr: support the pageout scheme") in -mm tree Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: SeongJae Park <sj@kernel.org> --- include/linux/damon.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/include/linux/damon.h b/include/linux/damon.h index 715dadd21f7c..9a327bc787b5 100644 --- a/include/linux/damon.h +++ b/include/linux/damon.h @@ -357,6 +357,8 @@ void damon_va_set_primitives(struct damon_ctx *ctx); void damon_pa_prepare_access_checks(struct damon_ctx *ctx); unsigned int damon_pa_check_accesses(struct damon_ctx *ctx); bool damon_pa_target_valid(void *t); +int damon_pa_apply_scheme(struct damon_ctx *context, struct damon_target *t, + struct damon_region *r, struct damos *scheme); void damon_pa_set_primitives(struct damon_ctx *ctx); #endif /* CONFIG_DAMON_PADDR */ -- 2.17.1
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