Commit 691d77b6 authored by Andy Whitcroft's avatar Andy Whitcroft Committed by Linus Torvalds

checkpatch: add checks for in_atomic()

in_atomic() is not for driver use so report any such use as an ERROR.
Also in_atomic() is often used to determine if we may sleep, but it is not
reliable in this use model therefore strongly discourage its use.
Signed-off-by: default avatarAndy Whitcroft <apw@shadowen.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 94e2959e
......@@ -2466,6 +2466,15 @@ sub process {
last;
}
}
# whine mightly about in_atomic
if ($line =~ /\bin_atomic\s*\(/) {
if ($realfile =~ m@^drivers/@) {
ERROR("do not use in_atomic in drivers\n" . $herecurr);
} else {
WARN("use of in_atomic() is incorrect outside core kernel code\n" . $herecurr);
}
}
}
# If we have no input at all, then there is nothing to report on
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment