[PATCH 1/2] padata: Do not mark padata_mt_helper() as __init

Nathan Chancellor
2022-11-29T19:02:53Z

When building arm64 allmodconfig + ThinLTO with clang and a proposed
modpost update to account for -ffuncton-sections, the following warning
appears:

WARNING: modpost: vmlinux.o: section mismatch in reference: padata_work_init (section: .text.padata_work_init) -> padata_mt_helper (section: .init.text)
WARNING: modpost: vmlinux.o: section mismatch in reference: padata_work_init (section: .text.padata_work_init) -> padata_mt_helper (section: .init.text)

In both cases, an __init function calls padata_work_init(), which is not
marked __init, with padata_mt_helper(), another __init function, as a
work function argument.

padata_work_init() is called from non-init paths, otherwise it could be
marked __init to resolve the warning. Instead, remove __init from
padata_mt_helper() to resolve the warning.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: linux-crypto@vger.kernel.org
---
kernel/padata.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/padata.c b/kernel/padata.c
index e5819bb8bd1d..c2271d7e446d 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -45,7 +45,7 @@ struct padata_mt_job_state {
};

static void padata_free_pd(struct parallel_data *pd);
-static void __init padata_mt_helper(struct work_struct *work);
+static void padata_mt_helper(struct work_struct *work);

static int padata_index_to_cpu(struct parallel_data *pd, int cpu_index)
{
@@ -425,7 +425,7 @@ static int padata_setup_cpumasks(struct padata_instance *pinst)
return err;
}

-static void __init padata_mt_helper(struct work_struct *w)
+static void padata_mt_helper(struct work_struct *w)
{
struct padata_work *pw = container_of(w, struct padata_work, pw_work);
struct padata_mt_job_state *ps = pw->pw_data;
--
2.38.1