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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: torvalds@linux-foundation.org
Cc: akpm@linux-foundation.org, bigeasy@linutronix.de,
	boqun.feng@gmail.com, bp@alien8.de, linux-kernel@vger.kernel.org,
	longman@redhat.com, mingo@kernel.org, peterz@infradead.org,
	tglx@linutronix.de, will@kernel.org,
	Dennis Zhou <dennis@kernel.org>, Tejun Heo <tj@kernel.org>,
	Christoph Lameter <cl@linux.com>
Subject: [PATCH 2/3] Revert "locking/local_lock: Make the empty local_lock_*() function a macro."
Date: Thu, 24 Mar 2022 18:39:26 +0100	[thread overview]
Message-ID: <20220324173927.2230447-3-bigeasy@linutronix.de> (raw)
In-Reply-To: <20220324173927.2230447-1-bigeasy@linutronix.de>

With volatile removed from arch_raw_cpu_ptr() the compiler no longer
creates the per-CPU reference. The usage of the macro can be reverted
now.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 include/linux/local_lock_internal.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/local_lock_internal.h b/include/linux/local_lock_internal.h
index 6d635e8306d64..975e33b793a77 100644
--- a/include/linux/local_lock_internal.h
+++ b/include/linux/local_lock_internal.h
@@ -44,9 +44,9 @@ static inline void local_lock_debug_init(local_lock_t *l)
 }
 #else /* CONFIG_DEBUG_LOCK_ALLOC */
 # define LOCAL_LOCK_DEBUG_INIT(lockname)
-# define local_lock_acquire(__ll)  do { typecheck(local_lock_t *, __ll); } while (0)
-# define local_lock_release(__ll)  do { typecheck(local_lock_t *, __ll); } while (0)
-# define local_lock_debug_init(__ll)  do { typecheck(local_lock_t *, __ll); } while (0)
+static inline void local_lock_acquire(local_lock_t *l) { }
+static inline void local_lock_release(local_lock_t *l) { }
+static inline void local_lock_debug_init(local_lock_t *l) { }
 #endif /* !CONFIG_DEBUG_LOCK_ALLOC */
 
 #define INIT_LOCAL_LOCK(lockname)	{ LOCAL_LOCK_DEBUG_INIT(lockname) }
-- 
2.35.1


  parent reply	other threads:[~2022-03-24 17:39 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-21 11:11 [GIT PULL] locking changes for v5.18 Ingo Molnar
2022-03-22 22:05 ` Linus Torvalds
2022-03-22 22:19   ` Borislav Petkov
2022-03-22 22:58     ` Linus Torvalds
2022-03-23  7:11       ` Sebastian Andrzej Siewior
2022-03-23 11:09         ` [PATCH] locking/local_lock: Pretend to use the per-CPU variable if not needed Sebastian Andrzej Siewior
2022-03-23 17:17           ` Linus Torvalds
2022-03-24 17:39             ` [PATCH 0/3] Remove volatile from arch_raw_cpu_ptr() and revert the hacks Sebastian Andrzej Siewior
2022-03-24 17:39               ` [PATCH 1/3] x86/percpu: Remove volatile from arch_raw_cpu_ptr() Sebastian Andrzej Siewior
2022-03-24 17:39               ` Sebastian Andrzej Siewior [this message]
2022-03-24 17:39               ` [PATCH 3/3] Revert "mm/page_alloc: mark pagesets as __maybe_unused" Sebastian Andrzej Siewior
2022-03-24 18:28               ` [PATCH 0/3] Remove volatile from arch_raw_cpu_ptr() and revert the hacks Linus Torvalds
2022-03-28 13:55                 ` Peter Zijlstra
2022-03-28 14:59                   ` Sebastian Andrzej Siewior
2022-03-28 14:58                 ` [PATCH v2 " Sebastian Andrzej Siewior
2022-03-28 14:58                   ` [PATCH v2 1/3] x86/percpu: Remove volatile from arch_raw_cpu_ptr() Sebastian Andrzej Siewior
2022-04-05  8:28                     ` [tip: locking/urgent] " tip-bot2 for Sebastian Andrzej Siewior
2022-03-28 14:58                   ` [PATCH v2 2/3] Revert "locking/local_lock: Make the empty local_lock_*() function a macro." Sebastian Andrzej Siewior
2022-04-05  8:28                     ` [tip: locking/urgent] " tip-bot2 for Sebastian Andrzej Siewior
2022-03-28 14:58                   ` [PATCH v2 3/3] Revert "mm/page_alloc: mark pagesets as __maybe_unused" Sebastian Andrzej Siewior
2022-04-05  8:28                     ` [tip: locking/urgent] " tip-bot2 for Sebastian Andrzej Siewior
2022-03-23 11:21       ` [PATCH] x86/defconfig: Enable WERROR Borislav Petkov
2022-03-23 17:19         ` Linus Torvalds
2022-03-23 17:33           ` Borislav Petkov
2022-03-24  8:31           ` [PATCH] x86/config: Make the x86 defconfigs a bit more usable Ingo Molnar
2022-03-24  9:12             ` David Laight
2022-03-24 15:47             ` Nathan Chancellor
2022-03-25 11:52               ` Andy Shevchenko
2022-03-27 19:04                 ` Ingo Molnar
2022-03-27 19:03               ` Ingo Molnar
2022-03-28 15:41                 ` Nathan Chancellor
2022-09-02  8:50                   ` Ingo Molnar
2022-09-02  9:18                     ` Masahiro Yamada
2022-09-04  9:48                       ` Ingo Molnar
2022-09-05  2:16                         ` Masahiro Yamada
2022-09-05  9:54                           ` Ingo Molnar
     [not found]                             ` <CAK7LNAQyiNpbLuVjjQ8-GOQECtfQZqsNS8xH0E2ZkLAHYtXt7A@mail.gmail.com>
2022-09-10 17:28                               ` Linus Torvalds
2022-03-24  8:16         ` [tip: x86/urgent] x86/defconfig: Enable WERROR tip-bot2 for Borislav Petkov
2022-03-25 11:41       ` [GIT PULL] locking changes for v5.18 Andy Shevchenko
2022-03-25 12:23         ` Peter Zijlstra
2022-03-25 13:06           ` Andy Shevchenko
2022-03-25 17:29         ` Linus Torvalds
2022-03-25 17:53           ` Andy Shevchenko
2022-03-22 22:38   ` Peter Zijlstra
2022-03-22 23:26   ` Linus Torvalds
2022-03-24  8:40     ` Ingo Molnar
2022-03-24 10:19       ` Borislav Petkov
2022-03-24 23:19         ` Nick Desaulniers
2022-03-22 23:27 ` pr-tracker-bot

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