Messages in this thread Patch in this message | | | Date | Fri, 19 Apr 2019 11:36:37 -0700 | From | tip-bot for Daniel Bristot de Oliveira <> | Subject | [tip:x86/alternatives] jump_label: Add for_each_label_entry helper |
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Commit-ID: b1b944f7230f4101b5a293d5ac3b7a9627ed5e6f Gitweb: https://git.kernel.org/tip/b1b944f7230f4101b5a293d5ac3b7a9627ed5e6f Author: Daniel Bristot de Oliveira <bristot@redhat.com> AuthorDate: Fri, 21 Dec 2018 11:27:26 +0100 Committer: Ingo Molnar <mingo@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 <bristot@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Chris von Recklinghausen <crecklin@redhat.com> Cc: Clark Williams <williams@redhat.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jason Baron <jbaron@akamai.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Scott Wood <swood@redhat.com> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/206640539a01e31b6f4ef4ef74962b1394e2f930.1545228276.git.bristot@redhat.com Signed-off-by: Ingo Molnar <mingo@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.
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