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| author |   Paul E. McKenney <paulmck@linux.ibm.com> | 2018-11-11 10:49:10 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.ibm.com> | 2018-11-12 09:03:59 -0800 |
| commit | 3d709ab5a1767d422223e84cf5c20f0d33738274 (patch) | |
| tree | 9f76e76c32d69c84bbfc045f1d315284c4d375ed /scripts | |
| parent | checkpatch: Create table of obsolete APIs and apply to RCU (diff) | |
| download | linux-dev-3d709ab5a1767d422223e84cf5c20f0d33738274.tar.xz linux-dev-3d709ab5a1767d422223e84cf5c20f0d33738274.zip | |
checkpatch.pl: Suggest lockdep instead of asserting !spin_is_locked()
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>
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/checkpatch.pl | 6 |
1 files changed, 6 insertions, 0 deletions
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; |