From: "Paul E. McKenney" <paulmck@linux.ibm.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com,
akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org,
"Paul E. McKenney" <paulmck@linux.ibm.com>,
Andy Whitcroft <apw@canonical.com>, Joe Perches <joe@perches.com>
Subject: [PATCH tip/core/rcu 14/14] checkpatch.pl: Suggest lockdep instead of asserting !spin_is_locked()
Date: Sun, 11 Nov 2018 11:29:04 -0800 [thread overview]
Message-ID: <20181111192904.3199-14-paulmck@linux.ibm.com> (raw)
In-Reply-To: <20181111192839.GA32144@linux.ibm.com>
This commit points people who might otherwise code up something like
WARN_ON(!spin_is_locked(&mylock)) to lockdep_assert_held(&mylock).
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Joe Perches <joe@perches.com>
---
scripts/checkpatch.pl | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index dd29e3c28166..377f373db6c0 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -6389,6 +6389,12 @@ sub process {
"please use device_initcall() or more appropriate function instead of __initcall() (see include/linux/init.h)\n" . $herecurr);
}
+# check for spin_is_locked(), suggest lockdep instead
+ if ($line =~ /\bspin_is_locked\(/) {
+ WARN("USE_LOCKDEP",
+ "Where possible, use lockdep_assert_held instead of assertions based on spin_is_locked\n" . $herecurr);
+ }
+
# check for deprecated apis
if ($line =~ /\b($deprecated_apis_search)\b\s*\(/) {
my $deprecated_api = $1;
--
2.17.1
prev parent reply other threads:[~2018-11-11 19:29 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-11 19:28 [PATCH tip/core/rcu 0/14] Miscellaneous fixes for v4.21/v5.0 Paul E. McKenney
2018-11-11 19:28 ` [PATCH tip/core/rcu 01/14] rcu: Stop expedited grace periods from relying on stop-machine Paul E. McKenney
2018-11-11 19:28 ` [PATCH tip/core/rcu 02/14] MAINTAINERS: Update from @linux.vnet.ibm.com to @linux.ibm.com Paul E. McKenney
2018-11-11 19:28 ` [PATCH tip/core/rcu 03/14] rcu: Avoid double multiply by HZ Paul E. McKenney
2018-11-11 19:28 ` [PATCH tip/core/rcu 04/14] rcu: Parameterize rcu_check_gp_start_stall() Paul E. McKenney
2018-11-11 19:28 ` [PATCH tip/core/rcu 05/14] rcu: Add state name to show_rcu_gp_kthreads() output Paul E. McKenney
2018-11-11 19:28 ` [PATCH tip/core/rcu 06/14] rcu: Add jiffies-since-GP-activity to show_rcu_gp_kthreads() Paul E. McKenney
2018-11-11 19:28 ` [PATCH tip/core/rcu 07/14] rcu: Adjust the comment of function rcu_is_watching Paul E. McKenney
2018-11-11 19:28 ` [PATCH tip/core/rcu 08/14] rcu: Trace end of grace period before end of grace period Paul E. McKenney
2018-11-11 19:28 ` [PATCH tip/core/rcu 09/14] rcu: Speed up expedited GPs when interrupting RCU reader Paul E. McKenney
2018-11-11 19:29 ` [PATCH tip/core/rcu 10/14] rcu: Replace this_cpu_ptr() with __this_cpu_read() Paul E. McKenney
2018-11-11 19:29 ` [PATCH tip/core/rcu 11/14] rcu: Avoid signed integer overflow in rcu_preempt_deferred_qs() Paul E. McKenney
2018-11-11 19:29 ` [PATCH tip/core/rcu 12/14] MAINTAINERS: Add Joel Fernandes as RCU reviewer Paul E. McKenney
2018-11-11 19:29 ` [PATCH tip/core/rcu 13/14] checkpatch: Create table of obsolete APIs and apply to RCU Paul E. McKenney
2018-11-11 19:29 ` Paul E. McKenney [this message]
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