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| author | Aaron Tomlin <atomlin@redhat.com> | 2022-05-02 22:51:04 +0200 |
|---|---|---|
| committer | Luis Chamberlain <mcgrof@kernel.org> | 2022-05-12 19:29:41 +0200 |
| commit | 6fb0538d0121ffab770a505b183968d93466ad59 (patch) | |
| tree | e4d104d7f43375d7a2142d162644d2a68e12cd9d /kernel/module/internal.h | |
| parent | module: Make module_flags_taint() accept a module's taints bitmap and usable ... (diff) | |
| download | linux-6fb0538d0121ffab770a505b183968d93466ad59.tar.xz linux-6fb0538d0121ffab770a505b183968d93466ad59.zip | |
module: Move module_assert_mutex_or_preempt() to internal.h
No functional change.
This patch migrates module_assert_mutex_or_preempt() to internal.h.
So, the aforementiond function can be used outside of main/or core
module code yet will remain restricted for internal use only.
Signed-off-by: Aaron Tomlin <atomlin@redhat.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Diffstat (limited to 'kernel/module/internal.h')
| -rw-r--r-- | kernel/module/internal.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/module/internal.h b/kernel/module/internal.h index abbd1c5ef264..0bdf64c9dfb5 100644 --- a/kernel/module/internal.h +++ b/kernel/module/internal.h @@ -10,6 +10,7 @@ #include <linux/module.h> #include <linux/mutex.h> #include <linux/rculist.h> +#include <linux/rcupdate.h> #ifndef ARCH_SHF_SMALL #define ARCH_SHF_SMALL 0 @@ -102,6 +103,17 @@ long module_get_offset(struct module *mod, unsigned int *size, Elf_Shdr *sechdr, char *module_flags(struct module *mod, char *buf); size_t module_flags_taint(unsigned long taints, char *buf); +static inline void module_assert_mutex_or_preempt(void) +{ +#ifdef CONFIG_LOCKDEP + if (unlikely(!debug_locks)) + return; + + WARN_ON_ONCE(!rcu_read_lock_sched_held() && + !lockdep_is_held(&module_mutex)); +#endif +} + static inline unsigned long kernel_symbol_value(const struct kernel_symbol *sym) { #ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS |