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authorIngo Molnar <mingo@kernel.org>2018-01-03 14:14:18 +0100
committerIngo Molnar <mingo@kernel.org>2018-01-03 14:14:18 +0100
commit475c5ee193fd682c6383b5e418e65e46a477d176 (patch)
tree43f70a77d919e10237edbbbc3ca7ac8076d27410 /scripts/checkpatch.pl
parentLinux 4.15-rc6 (diff)
parentMerge branches 'cond_resched.2017.12.04a', 'dyntick.2017.11.28a', 'fixes.2017... (diff)
downloadlinux-475c5ee193fd682c6383b5e418e65e46a477d176.tar.xz
linux-475c5ee193fd682c6383b5e418e65e46a477d176.zip
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney: - Updates to use cond_resched() instead of cond_resched_rcu_qs() where feasible (currently everywhere except in kernel/rcu and in kernel/torture.c). Also a couple of fixes to avoid sending IPIs to offline CPUs. - Updates to simplify RCU's dyntick-idle handling. - Updates to remove almost all uses of smp_read_barrier_depends() and read_barrier_depends(). - Miscellaneous fixes. - Torture-test updates. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'scripts/checkpatch.pl')
-rwxr-xr-xscripts/checkpatch.pl6
1 files changed, 6 insertions, 0 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 31031f10fe56..ba03f17ff662 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5586,6 +5586,12 @@ sub process {
}
}
+# check for smp_read_barrier_depends and read_barrier_depends
+ if (!$file && $line =~ /\b(smp_|)read_barrier_depends\s*\(/) {
+ WARN("READ_BARRIER_DEPENDS",
+ "$1read_barrier_depends should only be used in READ_ONCE or DEC Alpha code\n" . $herecurr);
+ }
+
# check of hardware specific defines
if ($line =~ m@^.\s*\#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@ && $realfile !~ m@include/asm-@) {
CHK("ARCH_DEFINES",