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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 <alxndr@bu.edu>
Reviewed-by: Darren Kenny <darren.kenny@oracle.com>
Message-Id: <20230427211013.2994127-4-alxndr@bu.edu>
Signed-off-by: Thomas Huth <thuth@redhat.com>
(cherry picked from commit ef56ffbdd6)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Alexander Bulekov 2023-04-27 17:10:08 -04:00 committed by Michael Tokarev
parent f88ebe0c7d
commit bb3522b4f8
1 changed files with 8 additions and 0 deletions
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8
scripts/checkpatch.pl
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@ -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);