From: tip-bot for Daniel Bristot de Oliveira <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: brgerst@gmail.com, jkosina@suse.cz, mingo@kernel.org,
jbaron@akamai.com, gregkh@linuxfoundation.org, hpa@zytor.com,
bristot@redhat.com, peterz@infradead.org, jolsa@redhat.com,
mtosatti@redhat.com, rostedt@goodmis.org,
alexander.shishkin@linux.intel.com, dvlasenk@redhat.com,
mhiramat@kernel.org, williams@redhat.com, jpoimboe@redhat.com,
torvalds@linux-foundation.org, bp@alien8.de, tglx@linutronix.de,
acme@redhat.com, crecklin@redhat.com,
linux-kernel@vger.kernel.org, swood@redhat.com, luto@kernel.org
Subject: [tip:x86/alternatives] jump_label: Add for_each_label_entry helper
Date: Fri, 19 Apr 2019 11:36:37 -0700 [thread overview]
Message-ID: <tip-b1b944f7230f4101b5a293d5ac3b7a9627ed5e6f@git.kernel.org> (raw)
In-Reply-To: <206640539a01e31b6f4ef4ef74962b1394e2f930.1545228276.git.bristot@redhat.com>
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.
next prev parent reply other threads:[~2019-04-19 18:37 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-21 10:27 [PATCH V3 0/9] x86/jump_label: Bound IPIs sent when updating a static key Daniel Bristot de Oliveira
2018-12-21 10:27 ` [PATCH V3 1/9] jump_label: Add for_each_label_entry helper Daniel Bristot de Oliveira
2019-04-19 18:36 ` tip-bot for Daniel Bristot de Oliveira [this message]
2018-12-21 10:27 ` [PATCH V3 2/9] jump_label: Add the jump_label_can_update_check() helper Daniel Bristot de Oliveira
2019-04-19 18:37 ` [tip:x86/alternatives] " tip-bot for Daniel Bristot de Oliveira
2018-12-21 10:27 ` [PATCH V3 3/9] x86/jump_label: Move checking code away from __jump_label_transform() Daniel Bristot de Oliveira
2019-04-19 18:38 ` [tip:x86/alternatives] " tip-bot for Daniel Bristot de Oliveira
2018-12-21 10:27 ` [PATCH V3 4/9] x86/jump_label: Add __jump_label_set_jump_code() helper Daniel Bristot de Oliveira
2019-04-19 18:38 ` [tip:x86/alternatives] " tip-bot for Daniel Bristot de Oliveira
2018-12-21 10:27 ` [PATCH V3 5/9] x86/alternative: Split text_poke_bp() into tree steps Daniel Bristot de Oliveira
2019-04-19 18:39 ` [tip:x86/alternatives] " tip-bot for Daniel Bristot de Oliveira
2018-12-21 10:27 ` [PATCH V3 6/9] jump_label: Sort entries of the same key by the code Daniel Bristot de Oliveira
2019-04-19 18:40 ` [tip:x86/alternatives] " tip-bot for Daniel Bristot de Oliveira
2018-12-21 10:27 ` [PATCH V3 7/9] x86/alternative: Batch of patch operations Daniel Bristot de Oliveira
2019-01-23 5:15 ` Masami Hiramatsu
2019-01-26 11:52 ` Daniel Bristot de Oliveira
2019-01-28 13:52 ` Masami Hiramatsu
2019-02-01 12:49 ` Daniel Bristot de Oliveira
2019-02-01 14:47 ` Masami Hiramatsu
2019-02-01 15:51 ` Daniel Bristot de Oliveira
2019-04-19 18:41 ` [tip:x86/alternatives] " tip-bot for Daniel Bristot de Oliveira
2018-12-21 10:27 ` [PATCH V3 8/9] jump_label: Batch updates if arch supports it Daniel Bristot de Oliveira
2019-04-19 18:42 ` [tip:x86/alternatives] " tip-bot for Daniel Bristot de Oliveira
2018-12-21 10:27 ` [PATCH V3 9/9] x86/jump_label: Batch jump label updates Daniel Bristot de Oliveira
2019-04-19 18:42 ` [tip:x86/alternatives] " tip-bot for Daniel Bristot de Oliveira
2019-01-21 12:52 ` [PATCH V3 0/9] x86/jump_label: Bound IPIs sent when updating a static key Daniel Bristot de Oliveira
2019-04-19 19:01 ` Ingo Molnar
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