Messages in this thread Patch in this message | | | From | Daniel Bristot de Oliveira <> | Subject | [PATCH V5 1/7] jump_label: Add for_each_label_entry helper | Date | Mon, 1 Apr 2019 10:58:13 +0200 |
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Add a helper macro to make jump entry iteration code more readable.
Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org> Cc: Chris von Recklinghausen <crecklin@redhat.com> Cc: Jason Baron <jbaron@akamai.com> Cc: Scott Wood <swood@redhat.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Clark Williams <williams@redhat.com> Cc: x86@kernel.org Cc: linux-kernel@vger.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. -- 2.20.1
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