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| author | Arnd Bergmann <arnd@arndb.de> | 2023-07-24 15:18:16 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-05 09:31:42 +0300 |
| commit | 79038a99445f69c5d28494dd4f8c6f0509f65b2e (patch) | |
| tree | bd982d6acef758007088e4c3e537ca07db8e1b25 /include/linux/kernfs.h | |
| parent | 7630ea17f4e273ea68ec4ff88d6c71503a68f120 (diff) | |
| download | linux-79038a99445f69c5d28494dd4f8c6f0509f65b2e.tar.xz | |
kernfs: add stub helper for kernfs_generic_poll()
In some randconfig builds, kernfs ends up being disabled, so there is no prototype
for kernfs_generic_poll()
In file included from kernel/sched/build_utility.c:97:
kernel/sched/psi.c:1479:3: error: implicit declaration of function 'kernfs_generic_poll' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
kernfs_generic_poll(t->of, wait);
^
Add a stub helper for it, as we have it for other kernfs functions.
Fixes: aff037078ecae ("sched/psi: use kernfs polling functions for PSI trigger polling")
Fixes: 147e1a97c4a0b ("fs: kernfs: add poll file operation")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Chengming Zhou <zhouchengming@bytedance.com>
Link: https://lore.kernel.org/r/20230724121823.1357562-1-arnd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/kernfs.h')
| -rw-r--r-- | include/linux/kernfs.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h index 73f5c120def8..2a36f3218b51 100644 --- a/include/linux/kernfs.h +++ b/include/linux/kernfs.h @@ -550,6 +550,10 @@ static inline int kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr) { return -ENOSYS; } +static inline __poll_t kernfs_generic_poll(struct kernfs_open_file *of, + struct poll_table_struct *pt) +{ return -ENOSYS; } + static inline void kernfs_notify(struct kernfs_node *kn) { } static inline int kernfs_xattr_get(struct kernfs_node *kn, const char *name, |