From: Ingo Molnar <mingo@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [GIT PULL] locking fixes
Date: Sun, 27 Dec 2020 10:50:44 +0100 [thread overview]
Message-ID: <20201227095044.GA1841019@gmail.com> (raw)
Linus,
Please pull the latest locking/urgent git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking-urgent-2020-12-27
# HEAD: 91ea62d58bd661827c328a2c6c02a87fa4aae88b softirq: Avoid bad tracing / lockdep interaction
Misc fixes/updates:
- Fix static keys usage in module __init sections
- Add separate MAINTAINERS entry for static branches/calls
- Fix lockdep splat with CONFIG_PREEMPTIRQ_EVENTS=y tracing
Thanks,
Ingo
------------------>
Peter Zijlstra (3):
jump_label: Fix usage in module __init
jump_label/static_call: Add MAINTAINERS
softirq: Avoid bad tracing / lockdep interaction
MAINTAINERS | 16 ++++++++++++++++
kernel/jump_label.c | 8 +++++---
kernel/softirq.c | 2 +-
3 files changed, 22 insertions(+), 4 deletions(-)
diff --git a/MAINTAINERS b/MAINTAINERS
index 281de213ef47..be02614ad28d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -16675,6 +16675,22 @@ M: Ion Badulescu <ionut@badula.org>
S: Odd Fixes
F: drivers/net/ethernet/adaptec/starfire*
+STATIC BRANCH/CALL
+M: Peter Zijlstra <peterz@infradead.org>
+M: Josh Poimboeuf <jpoimboe@redhat.com>
+M: Jason Baron <jbaron@akamai.com>
+R: Steven Rostedt <rostedt@goodmis.org>
+R: Ard Biesheuvel <ardb@kernel.org>
+S: Supported
+F: arch/*/include/asm/jump_label*.h
+F: arch/*/include/asm/static_call*.h
+F: arch/*/kernel/jump_label.c
+F: arch/*/kernel/static_call.c
+F: include/linux/jump_label*.h
+F: include/linux/static_call*.h
+F: kernel/jump_label.c
+F: kernel/static_call.c
+
STEC S1220 SKD DRIVER
M: Damien Le Moal <Damien.LeMoal@wdc.com>
L: linux-block@vger.kernel.org
diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index 015ef903ce8c..c6a39d662935 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -793,6 +793,7 @@ int jump_label_text_reserved(void *start, void *end)
static void jump_label_update(struct static_key *key)
{
struct jump_entry *stop = __stop___jump_table;
+ bool init = system_state < SYSTEM_RUNNING;
struct jump_entry *entry;
#ifdef CONFIG_MODULES
struct module *mod;
@@ -804,15 +805,16 @@ static void jump_label_update(struct static_key *key)
preempt_disable();
mod = __module_address((unsigned long)key);
- if (mod)
+ if (mod) {
stop = mod->jump_entries + mod->num_jump_entries;
+ init = mod->state == MODULE_STATE_COMING;
+ }
preempt_enable();
#endif
entry = static_key_entries(key);
/* if there are no users, entry can be NULL */
if (entry)
- __jump_label_update(key, entry, stop,
- system_state < SYSTEM_RUNNING);
+ __jump_label_update(key, entry, stop, init);
}
#ifdef CONFIG_STATIC_KEYS_SELFTEST
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 09229ad82209..0f1d3a32d53b 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -185,7 +185,7 @@ void __local_bh_enable_ip(unsigned long ip, unsigned int cnt)
* Keep preemption disabled until we are done with
* softirq processing:
*/
- preempt_count_sub(cnt - 1);
+ __preempt_count_sub(cnt - 1);
if (unlikely(!in_interrupt() && local_softirq_pending())) {
/*
next reply other threads:[~2020-12-27 9:51 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-27 9:50 Ingo Molnar [this message]
2020-12-27 17:27 ` [GIT PULL] locking fixes pr-tracker-bot
-- strict thread matches above, loose matches on Subject: below --
2023-09-22 10:12 Ingo Molnar
2023-09-22 20:19 ` pr-tracker-bot
2021-07-11 13:22 Ingo Molnar
2021-07-11 18:22 ` pr-tracker-bot
2021-04-11 12:14 Ingo Molnar
2021-04-11 18:56 ` pr-tracker-bot
2021-03-21 10:53 Ingo Molnar
2021-03-21 18:45 ` pr-tracker-bot
2020-08-15 11:13 Ingo Molnar
2020-08-16 1:55 ` pr-tracker-bot
2020-01-18 17:53 Ingo Molnar
2020-01-18 21:05 ` pr-tracker-bot
2019-12-17 11:27 Ingo Molnar
2019-12-17 19:20 ` pr-tracker-bot
2019-04-20 7:30 Ingo Molnar
2019-04-20 16:51 ` Linus Torvalds
2019-04-21 18:23 ` Ingo Molnar
2019-04-20 19:25 ` pr-tracker-bot
2019-02-10 8:53 Ingo Molnar
2019-02-10 18:30 ` pr-tracker-bot
2018-10-05 9:36 Ingo Molnar
2018-10-05 23:06 ` Greg Kroah-Hartman
2018-09-15 12:56 Ingo Molnar
2018-07-30 17:49 Ingo Molnar
2018-03-25 8:49 Ingo Molnar
2018-02-15 0:50 Ingo Molnar
2018-01-17 15:24 Ingo Molnar
2018-01-22 9:43 ` Geert Uytterhoeven
2018-01-22 10:39 ` Peter Zijlstra
2018-01-12 13:45 Ingo Molnar
2017-12-15 15:55 Ingo Molnar
2017-10-14 16:01 Ingo Molnar
2017-03-07 20:27 Ingo Molnar
2017-02-28 7:57 Ingo Molnar
2017-02-28 18:37 ` Linus Torvalds
2017-05-03 23:21 ` Linus Torvalds
2017-05-04 5:40 ` Peter Zijlstra
[not found] ` <CA+55aFymvtCAYHdz__3Lj=YqmORB7_A-NXrw=+h+60znJVsDTw@mail.gmail.com>
2017-05-04 22:44 ` Greg Kroah-Hartman
2016-12-07 18:42 Ingo Molnar
2016-10-18 10:55 Ingo Molnar
2016-08-18 20:34 Ingo Molnar
2016-08-12 19:32 Ingo Molnar
2016-06-10 12:45 Ingo Molnar
2016-04-28 17:52 Ingo Molnar
2016-04-23 11:22 Ingo Molnar
2016-03-24 7:47 Ingo Molnar
2015-09-17 7:57 Ingo Molnar
2015-04-18 15:15 Ingo Molnar
2015-02-20 13:37 Ingo Molnar
2015-02-21 0:03 ` Linus Torvalds
2015-02-21 1:51 ` Linus Torvalds
2015-02-23 8:35 ` Christian Borntraeger
2015-02-21 5:07 ` Ingo Molnar
2015-02-21 5:16 ` Ingo Molnar
2015-02-21 5:28 ` Ingo Molnar
2015-01-11 8:39 Ingo Molnar
2014-10-31 11:06 Ingo Molnar
2014-04-16 11:39 Ingo Molnar
2014-01-15 18:15 Ingo Molnar
2009-12-10 19:45 Ingo Molnar
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