This patch adds the helper:
for_each_label_entry(key, entry, stop)
For the "for each jump label entry" for defined as:
for (; (entry < stop) && (jump_entry_key(entry) == key); entry++)
Simplifying the reading and usage.
Signed-off-by: Daniel Bristot de Oliveira <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Pavel Tatashin <[email protected]>
Cc: Masami Hiramatsu <[email protected]>
Cc: "Steven Rostedt (VMware)" <[email protected]>
Cc: Zhou Chengming <[email protected]>
Cc: Jiri Kosina <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Cc: "Peter Zijlstra (Intel)" <[email protected]>
Cc: Chris von Recklinghausen <[email protected]>
Cc: Jason Baron <[email protected]>
Cc: Scott Wood <[email protected]>
Cc: Marcelo Tosatti <[email protected]>
Cc: Clark Williams <[email protected]>
Cc: [email protected]
Cc: [email protected]
---
include/linux/jump_label.h | 3 +++
kernel/jump_label.c | 2 +-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h
index 1a0b6f17a5d6..cd3bed880ca0 100644
--- a/include/linux/jump_label.h
+++ b/include/linux/jump_label.h
@@ -170,6 +170,9 @@ extern void static_key_disable(struct static_key *key);
extern void static_key_enable_cpuslocked(struct static_key *key);
extern void static_key_disable_cpuslocked(struct static_key *key);
+#define for_each_label_entry(key, entry, stop) \
+ for (; (entry < stop) && (jump_entry_key(entry) == key); entry++)
+
/*
* We should be using ATOMIC_INIT() for initializing .enabled, but
* the inclusion of atomic.h is problematic for inclusion of jump_label.h
diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index 2e62503bea0d..e853916a3b46 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -365,7 +365,7 @@ static void __jump_label_update(struct static_key *key,
struct jump_entry *entry,
struct jump_entry *stop)
{
- for (; (entry < stop) && (jump_entry_key(entry) == key); entry++) {
+ for_each_label_entry(key, entry, stop) {
/*
* An entry->code of 0 indicates an entry which has been
* disabled because it was in an init text area.
--
2.17.1
