Commit-ID: b1b944f7230f4101b5a293d5ac3b7a9627ed5e6f Gitweb: https://git.kernel.org/tip/b1b944f7230f4101b5a293d5ac3b7a9627ed5e6f Author: Daniel Bristot de Oliveira <[email protected]> AuthorDate: Fri, 21 Dec 2018 11:27:26 +0100 Committer: Ingo Molnar <[email protected]> CommitDate: Fri, 19 Apr 2019 19:37:34 +0200
jump_label: Add for_each_label_entry helper Add a helper macro to make jump entry iteration code more readable. Signed-off-by: Daniel Bristot de Oliveira <[email protected]> Cc: Alexander Shishkin <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Brian Gerst <[email protected]> Cc: Chris von Recklinghausen <[email protected]> Cc: Clark Williams <[email protected]> Cc: Denys Vlasenko <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: Jason Baron <[email protected]> Cc: Jiri Kosina <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Josh Poimboeuf <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Marcelo Tosatti <[email protected]> Cc: Masami Hiramatsu <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Scott Wood <[email protected]> Cc: Steven Rostedt (VMware) <[email protected]> Cc: Thomas Gleixner <[email protected]> Link: http://lkml.kernel.org/r/206640539a01e31b6f4ef4ef74962b1394e2f930.1545228276.git.bris...@redhat.com Signed-off-by: Ingo Molnar <[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 3e113a1fa0f1..7e91af98bbb1 100644 --- a/include/linux/jump_label.h +++ b/include/linux/jump_label.h @@ -227,6 +227,9 @@ 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 bad96b476eb6..288d630da22d 100644 --- a/kernel/jump_label.c +++ b/kernel/jump_label.c @@ -379,7 +379,7 @@ static void __jump_label_update(struct static_key *key, struct jump_entry *stop, bool init) { - 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.
