From ef56ffbdd6b0605dc1e305611287b948c970e236 Mon Sep 17 00:00:00 2001 From: Alexander Bulekov Date: Thu, 27 Apr 2023 17:10:08 -0400 Subject: [PATCH] checkpatch: add qemu_bh_new/aio_bh_new checks Advise authors to use the _guarded versions of the APIs, instead. Signed-off-by: Alexander Bulekov Reviewed-by: Darren Kenny Message-Id: <20230427211013.2994127-4-alxndr@bu.edu> Signed-off-by: Thomas Huth --- scripts/checkpatch.pl | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index d768171dcf..eeaec436eb 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -2865,6 +2865,14 @@ sub process { if ($line =~ /\bsignal\s*\(/ && !($line =~ /SIG_(?:IGN|DFL)/)) { ERROR("use sigaction to establish signal handlers; signal is not portable\n" . $herecurr); } +# recommend qemu_bh_new_guarded instead of qemu_bh_new + if ($realfile =~ /.*\/hw\/.*/ && $line =~ /\bqemu_bh_new\s*\(/) { + ERROR("use qemu_bh_new_guarded() instead of qemu_bh_new() to avoid reentrancy problems\n" . $herecurr); + } +# recommend aio_bh_new_guarded instead of aio_bh_new + if ($realfile =~ /.*\/hw\/.*/ && $line =~ /\baio_bh_new\s*\(/) { + ERROR("use aio_bh_new_guarded() instead of aio_bh_new() to avoid reentrancy problems\n" . $herecurr); + } # check for module_init(), use category-specific init macros explicitly please if ($line =~ /^module_init\s*\(/) { ERROR("please use block_init(), type_init() etc. instead of module_init()\n" . $herecurr);