checkpatch: adapt some tests to QEMU
Mostly change severity levels, but some tests can also be adjusted to refer to QEMU APIs or data structures. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini
parent
690a35e1f2
commit
71c47b01ca
@ -152,33 +152,18 @@ our $Sparse = qr{
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}x;
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# Notes to $Attribute:
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# We need \b after 'init' otherwise 'initconst' will cause a false positive in a check
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our $Attribute = qr{
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const|
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__percpu|
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__nocast|
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__safe|
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__bitwise__|
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__packed__|
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__packed2__|
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__naked|
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__maybe_unused|
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__always_unused|
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__noreturn|
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__used|
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__cold|
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__noclone|
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__deprecated|
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__read_mostly|
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__kprobes|
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__(?:mem|cpu|dev|)(?:initdata|initconst|init\b)|
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____cacheline_aligned|
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____cacheline_aligned_in_smp|
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____cacheline_internodealigned_in_smp|
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__weak
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volatile|
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QEMU_NORETURN|
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QEMU_WARN_UNUSED_RESULT|
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QEMU_SENTINEL|
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QEMU_ARTIFICIAL|
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QEMU_PACKED|
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GCC_FMT_ATTR
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}x;
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our $Modifier;
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our $Inline = qr{inline|__always_inline|noinline};
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our $Inline = qr{inline};
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our $Member = qr{->$Ident|\.$Ident|\[[^]]*\]};
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our $Lval = qr{$Ident(?:$Member)*};
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@ -1367,7 +1352,7 @@ sub process {
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# Check for incorrect file permissions
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if ($line =~ /^new (file )?mode.*[7531]\d{0,2}$/) {
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my $permhere = $here . "FILE: $realfile\n";
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if ($realfile =~ /(Makefile|Kconfig|\.c|\.cpp|\.h|\.S|\.tmpl)$/) {
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if ($realfile =~ /(\bMakefile(?:\.objs)?|\.c|\.cc|\.cpp|\.h|\.mak|\.[sS])$/) {
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ERROR("do not set execute permissions for source files\n" . $permhere);
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}
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}
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@ -1947,9 +1932,14 @@ sub process {
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ERROR("open brace '{' following $1 go on the same line\n" . $hereprev);
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}
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# ... however, open braces on typedef lines should be avoided.
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if ($line =~ /^.\s*typedef\s+(enum|union|struct)(?:\s+$Ident\b)?.*[^;]$/) {
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ERROR("typedefs should be separate from struct declaration\n" . $herecurr);
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}
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# missing space after union, struct or enum definition
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if ($line =~ /^.\s*(?:typedef\s+)?(enum|union|struct)(?:\s+$Ident)?(?:\s+$Ident)?[=\{]/) {
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WARN("missing space after $1 definition\n" . $herecurr);
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ERROR("missing space after $1 definition\n" . $herecurr);
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}
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# check for spacing round square brackets; allowed:
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@ -2267,7 +2257,7 @@ sub process {
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if ($line =~ /^.\s*return\s*(E[A-Z]*)\s*;/) {
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my $name = $1;
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if ($name ne 'EOF' && $name ne 'ERROR') {
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CHK("return of an errno should typically be -ve (return -$1)\n" . $herecurr);
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WARN("return of an errno should typically be -ve (return -$1)\n" . $herecurr);
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}
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}
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@ -2671,15 +2661,15 @@ sub process {
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# warn about #if 0
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if ($line =~ /^.\s*\#\s*if\s+0\b/) {
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CHK("if this code is redundant consider removing it\n" .
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WARN("if this code is redundant consider removing it\n" .
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$herecurr);
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}
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# check for needless kfree() checks
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# check for needless g_free() checks
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if ($prevline =~ /\bif\s*\(([^\)]*)\)/) {
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my $expr = $1;
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if ($line =~ /\bkfree\(\Q$expr\E\);/) {
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WARN("kfree(NULL) is safe this check is probably not required\n" . $hereprev);
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if ($line =~ /\bg_free\(\Q$expr\E\);/) {
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WARN("g_free(NULL) is safe this check is probably not required\n" . $hereprev);
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}
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}
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# check for needless usb_free_urb() checks
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@ -2726,14 +2716,16 @@ sub process {
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}
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}
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# check for memory barriers without a comment.
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if ($line =~ /\b(mb|rmb|wmb|read_barrier_depends|smp_mb|smp_rmb|smp_wmb|smp_read_barrier_depends)\(/) {
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if ($line =~ /\b(smp_mb|smp_rmb|smp_wmb|smp_read_barrier_depends)\(/) {
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if (!ctx_has_comment($first_line, $linenr)) {
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CHK("memory barrier without comment\n" . $herecurr);
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WARN("memory barrier without comment\n" . $herecurr);
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}
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}
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# check of hardware specific defines
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if ($line =~ m@^.\s*\#\s*if.*\b(__i386__|__powerpc64__|__sun__|__s390x__)\b@ && $realfile !~ m@include/asm-@) {
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CHK("architecture specific defines should be avoided\n" . $herecurr);
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# we have e.g. CONFIG_LINUX and CONFIG_WIN32 for common cases
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# where they might be necessary.
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if ($line =~ m@^.\s*\#\s*if.*\b__@) {
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WARN("architecture specific defines should be avoided\n" . $herecurr);
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}
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# Check that the storage class is at the beginning of a declaration
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@ -2794,9 +2786,13 @@ sub process {
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}
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}
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# check for pointless casting of kmalloc return
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if ($line =~ /\*\s*\)\s*k[czm]alloc\b/) {
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WARN("unnecessary cast may hide bugs, see http://c-faq.com/malloc/mallocnocast.html\n" . $herecurr);
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# check for pointless casting of g_malloc return
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if ($line =~ /\*\s*\)\s*g_(try)?(m|re)alloc(0?)(_n)?\b/) {
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if ($2 == 'm') {
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WARN("unnecessary cast may hide bugs, use g_$1new$3 instead\n" . $herecurr);
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} else {
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WARN("unnecessary cast may hide bugs, use g_$1renew$3 instead\n" . $herecurr);
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}
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}
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# check for gcc specific __FUNCTION__
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@ -2813,54 +2809,37 @@ sub process {
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WARN("consider using a completion\n" . $herecurr);
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}
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# recommend strict_strto* over simple_strto*
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if ($line =~ /\bsimple_(strto.*?)\s*\(/) {
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WARN("consider using strict_$1 in preference to simple_$1\n" . $herecurr);
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# recommend qemu_strto* over strto*
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if ($line =~ /\b(strto.*?)\s*\(/) {
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WARN("consider using qemu_$1 in preference to $1\n" . $herecurr);
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}
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# check for __initcall(), use device_initcall() explicitly please
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if ($line =~ /^.\s*__initcall\s*\(/) {
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WARN("please use device_initcall() instead of __initcall()\n" . $herecurr);
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# check for module_init(), use category-specific init macros explicitly please
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if ($line =~ /^module_init\s*\(/) {
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WARN("please use block_init(), type_init() etc. instead of module_init()\n" . $herecurr);
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}
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# check for various ops structs, ensure they are const.
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my $struct_ops = qr{acpi_dock_ops|
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address_space_operations|
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backlight_ops|
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block_device_operations|
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dentry_operations|
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dev_pm_ops|
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dma_map_ops|
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extent_io_ops|
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file_lock_operations|
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file_operations|
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hv_ops|
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ide_dma_ops|
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intel_dvo_dev_ops|
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item_operations|
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iwl_ops|
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kgdb_arch|
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kgdb_io|
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kset_uevent_ops|
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lock_manager_operations|
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microcode_ops|
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mtrr_ops|
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neigh_ops|
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nlmsvc_binding|
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pci_raw_ops|
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pipe_buf_operations|
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platform_hibernation_ops|
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platform_suspend_ops|
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proto_ops|
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rpc_pipe_ops|
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seq_operations|
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snd_ac97_build_ops|
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soc_pcmcia_socket_ops|
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stacktrace_ops|
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sysfs_ops|
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tty_operations|
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usb_mon_operations|
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wd_ops}x;
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my $struct_ops = qr{AIOCBInfo|
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BdrvActionOps|
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BlockDevOps|
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BlockJobDriver|
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DisplayChangeListenerOps|
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GraphicHwOps|
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IDEDMAOps|
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KVMCapabilityInfo|
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MemoryRegionIOMMUOps|
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MemoryRegionOps|
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MemoryRegionPortio|
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QEMUFileOps|
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SCSIBusInfo|
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SCSIReqOps|
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Spice[A-Z][a-zA-Z0-9]*Interface|
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TPMDriverOps|
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USBDesc[A-Z][a-zA-Z0-9]*|
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VhostOps|
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VMStateDescription|
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VMStateInfo}x;
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if ($line !~ /\bconst\b/ &&
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$line =~ /\bstruct\s+($struct_ops)\b/) {
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$line =~ /\b($struct_ops)\b/) {
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WARN("struct $1 should normally be const\n" .
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$herecurr);
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}
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