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| author | Jani Nikula <jani.nikula@intel.com> | 2021-03-11 08:19:46 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2021-03-11 08:52:53 +0200 |
| commit | 35bb28ece90dfb7f72b77ba529f25f79323d9581 (patch) | |
| tree | 4ae931a45b83b5701214952066bb6fa6d839d7ff /kernel/livepatch | |
| parent | aaca50ef45ed247d98a66c0a754d1be93ff35dde (diff) | |
| parent | a38fd8748464831584a19438cbb3082b5a2dab15 (diff) | |
| download | cachepc-linux-35bb28ece90dfb7f72b77ba529f25f79323d9581.tar.gz cachepc-linux-35bb28ece90dfb7f72b77ba529f25f79323d9581.zip | |
Merge drm/drm-next into drm-intel-next
Sync up with upstream.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'kernel/livepatch')
| -rw-r--r-- | kernel/livepatch/core.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c index f76fdb925532..335d988bd811 100644 --- a/kernel/livepatch/core.c +++ b/kernel/livepatch/core.c @@ -19,6 +19,7 @@ #include <linux/moduleloader.h> #include <linux/completion.h> #include <linux/memory.h> +#include <linux/rcupdate.h> #include <asm/cacheflush.h> #include "core.h" #include "patch.h" @@ -57,7 +58,7 @@ static void klp_find_object_module(struct klp_object *obj) if (!klp_is_module(obj)) return; - mutex_lock(&module_mutex); + rcu_read_lock_sched(); /* * We do not want to block removal of patched modules and therefore * we do not take a reference here. The patches are removed by @@ -74,7 +75,7 @@ static void klp_find_object_module(struct klp_object *obj) if (mod && mod->klp_alive) obj->mod = mod; - mutex_unlock(&module_mutex); + rcu_read_unlock_sched(); } static bool klp_initialized(void) @@ -163,12 +164,10 @@ static int klp_find_object_symbol(const char *objname, const char *name, .pos = sympos, }; - mutex_lock(&module_mutex); if (objname) module_kallsyms_on_each_symbol(klp_find_callback, &args); else kallsyms_on_each_symbol(klp_find_callback, &args); - mutex_unlock(&module_mutex); /* * Ensure an address was found. If sympos is 0, ensure symbol is unique; |