Commit-ID: b1b944f7230f4101b5a293d5ac3b7a9627ed5e6f Gitweb: https://git.kernel.org/tip/b1b944f7230f4101b5a293d5ac3b7a9627ed5e6f Author: Daniel Bristot de Oliveira <bris...@redhat.com> AuthorDate: Fri, 21 Dec 2018 11:27:26 +0100 Committer: Ingo Molnar <mi...@kernel.org> 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 <bris...@redhat.com> Cc: Alexander Shishkin <alexander.shish...@linux.intel.com> Cc: Andy Lutomirski <l...@kernel.org> Cc: Arnaldo Carvalho de Melo <a...@redhat.com> Cc: Borislav Petkov <b...@alien8.de> Cc: Brian Gerst <brge...@gmail.com> Cc: Chris von Recklinghausen <creck...@redhat.com> Cc: Clark Williams <willi...@redhat.com> Cc: Denys Vlasenko <dvlas...@redhat.com> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> Cc: H. Peter Anvin <h...@zytor.com> Cc: Jason Baron <jba...@akamai.com> Cc: Jiri Kosina <jkos...@suse.cz> Cc: Jiri Olsa <jo...@redhat.com> Cc: Josh Poimboeuf <jpoim...@redhat.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Marcelo Tosatti <mtosa...@redhat.com> Cc: Masami Hiramatsu <mhira...@kernel.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Scott Wood <sw...@redhat.com> Cc: Steven Rostedt (VMware) <rost...@goodmis.org> Cc: Thomas Gleixner <t...@linutronix.de> Link: http://lkml.kernel.org/r/206640539a01e31b6f4ef4ef74962b1394e2f930.1545228276.git.bris...@redhat.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- 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.
