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Date:   Wed, 3 Nov 2021 23:22:42 +0800
From:   Zhaoyu Liu <zackary.liu.pro@...il.com>
To:     gregkh@...uxfoundation.org, ripxorip@...il.com,
        maennich@...gle.com, matthieu.baerts@...sares.net,
        masahiroy@...nel.org
Cc:     maz@...nel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] scripts/tags: add space regexs to all regex_c

When "make tags", it prompts a warning:

    ctags: Warning: drivers/pci/controller/pcie-apple.c:150:
    null expansion of name pattern "\1"

The reason is that there is an indentation beside arguments of
DECLARE_BITMAP, but it can parsed normally by gtags. It's also
allowed in C.

Regex [:space:] can match any white space character, so it's a
better approach to add it to each item in regex_c.

Suggested-by: Marc Zyngier <maz@...nel.org>
Signed-off-by: Zhaoyu Liu <zackary.liu.pro@...il.com>
---
 scripts/tags.sh | 126 ++++++++++++++++++++++++------------------------
 1 file changed, 63 insertions(+), 63 deletions(-)

diff --git a/scripts/tags.sh b/scripts/tags.sh
index b24bfaec6290..16d475b3e203 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -140,71 +140,71 @@ dogtags()
 # - etags regular expressions have to match at the start of a line;
 #   a ^[^#] is prepended by setup_regex unless an anchor is already present
 regex_asm=(
-	'/^\(ENTRY\|_GLOBAL\)(\([[:alnum:]_\\]*\)).*/\2/'
+	'/^\(ENTRY\|_GLOBAL\)([[:space:]]*\([[:alnum:]_\\]*\)).*/\2/'
 )
 regex_c=(
-	'/^SYSCALL_DEFINE[0-9](\([[:alnum:]_]*\).*/sys_\1/'
-	'/^BPF_CALL_[0-9](\([[:alnum:]_]*\).*/\1/'
-	'/^COMPAT_SYSCALL_DEFINE[0-9](\([[:alnum:]_]*\).*/compat_sys_\1/'
-	'/^TRACE_EVENT(\([[:alnum:]_]*\).*/trace_\1/'
-	'/^TRACE_EVENT(\([[:alnum:]_]*\).*/trace_\1_rcuidle/'
-	'/^DEFINE_EVENT([^,)]*, *\([[:alnum:]_]*\).*/trace_\1/'
-	'/^DEFINE_EVENT([^,)]*, *\([[:alnum:]_]*\).*/trace_\1_rcuidle/'
-	'/^DEFINE_INSN_CACHE_OPS(\([[:alnum:]_]*\).*/get_\1_slot/'
-	'/^DEFINE_INSN_CACHE_OPS(\([[:alnum:]_]*\).*/free_\1_slot/'
-	'/^PAGEFLAG(\([[:alnum:]_]*\).*/Page\1/'
-	'/^PAGEFLAG(\([[:alnum:]_]*\).*/SetPage\1/'
-	'/^PAGEFLAG(\([[:alnum:]_]*\).*/ClearPage\1/'
-	'/^TESTSETFLAG(\([[:alnum:]_]*\).*/TestSetPage\1/'
-	'/^TESTPAGEFLAG(\([[:alnum:]_]*\).*/Page\1/'
-	'/^SETPAGEFLAG(\([[:alnum:]_]*\).*/SetPage\1/'
-	'/\<__SETPAGEFLAG(\([[:alnum:]_]*\).*/__SetPage\1/'
-	'/\<TESTCLEARFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
-	'/\<__TESTCLEARFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
-	'/\<CLEARPAGEFLAG(\([[:alnum:]_]*\).*/ClearPage\1/'
-	'/\<__CLEARPAGEFLAG(\([[:alnum:]_]*\).*/__ClearPage\1/'
-	'/^__PAGEFLAG(\([[:alnum:]_]*\).*/__SetPage\1/'
-	'/^__PAGEFLAG(\([[:alnum:]_]*\).*/__ClearPage\1/'
-	'/^PAGEFLAG_FALSE(\([[:alnum:]_]*\).*/Page\1/'
-	'/\<TESTSCFLAG(\([[:alnum:]_]*\).*/TestSetPage\1/'
-	'/\<TESTSCFLAG(\([[:alnum:]_]*\).*/TestClearPage\1/'
-	'/\<SETPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/SetPage\1/'
-	'/\<CLEARPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/ClearPage\1/'
-	'/\<__CLEARPAGEFLAG_NOOP(\([[:alnum:]_]*\).*/__ClearPage\1/'
-	'/\<TESTCLEARFLAG_FALSE(\([[:alnum:]_]*\).*/TestClearPage\1/'
-	'/^PAGE_TYPE_OPS(\([[:alnum:]_]*\).*/Page\1/'
-	'/^PAGE_TYPE_OPS(\([[:alnum:]_]*\).*/__SetPage\1/'
-	'/^PAGE_TYPE_OPS(\([[:alnum:]_]*\).*/__ClearPage\1/'
-	'/^TASK_PFA_TEST([^,]*, *\([[:alnum:]_]*\))/task_\1/'
-	'/^TASK_PFA_SET([^,]*, *\([[:alnum:]_]*\))/task_set_\1/'
-	'/^TASK_PFA_CLEAR([^,]*, *\([[:alnum:]_]*\))/task_clear_\1/'
-	'/^DEF_MMIO_\(IN\|OUT\)_[XD](\([[:alnum:]_]*\),[^)]*)/\2/'
-	'/^DEBUGGER_BOILERPLATE(\([[:alnum:]_]*\))/\1/'
-	'/^DEF_PCI_AC_\(\|NO\)RET(\([[:alnum:]_]*\).*/\2/'
-	'/^PCI_OP_READ(\(\w*\).*[1-4])/pci_bus_read_config_\1/'
-	'/^PCI_OP_WRITE(\(\w*\).*[1-4])/pci_bus_write_config_\1/'
-	'/\<DEFINE_\(RT_MUTEX\|MUTEX\|SEMAPHORE\|SPINLOCK\)(\([[:alnum:]_]*\)/\2/v/'
-	'/\<DEFINE_\(RAW_SPINLOCK\|RWLOCK\|SEQLOCK\)(\([[:alnum:]_]*\)/\2/v/'
-	'/\<DECLARE_\(RWSEM\|COMPLETION\)(\([[:alnum:]_]\+\)/\2/v/'
-	'/\<DECLARE_BITMAP(\([[:alnum:]_]*\)/\1/v/'
-	'/\(^\|\s\)\(\|L\|H\)LIST_HEAD(\([[:alnum:]_]*\)/\3/v/'
-	'/\(^\|\s\)RADIX_TREE(\([[:alnum:]_]*\)/\2/v/'
-	'/\<DEFINE_PER_CPU([^,]*, *\([[:alnum:]_]*\)/\1/v/'
-	'/\<DEFINE_PER_CPU_SHARED_ALIGNED([^,]*, *\([[:alnum:]_]*\)/\1/v/'
-	'/\<DECLARE_WAIT_QUEUE_HEAD(\([[:alnum:]_]*\)/\1/v/'
-	'/\<DECLARE_\(TASKLET\|WORK\|DELAYED_WORK\)(\([[:alnum:]_]*\)/\2/v/'
-	'/\(^\s\)OFFSET(\([[:alnum:]_]*\)/\2/v/'
-	'/\(^\s\)DEFINE(\([[:alnum:]_]*\)/\2/v/'
-	'/\<\(DEFINE\|DECLARE\)_HASHTABLE(\([[:alnum:]_]*\)/\2/v/'
-	'/\<DEFINE_ID\(R\|A\)(\([[:alnum:]_]\+\)/\2/'
-	'/\<DEFINE_WD_CLASS(\([[:alnum:]_]\+\)/\1/'
-	'/\<ATOMIC_NOTIFIER_HEAD(\([[:alnum:]_]\+\)/\1/'
-	'/\<RAW_NOTIFIER_HEAD(\([[:alnum:]_]\+\)/\1/'
-	'/\<DECLARE_FAULT_ATTR(\([[:alnum:]_]\+\)/\1/'
-	'/\<BLOCKING_NOTIFIER_HEAD(\([[:alnum:]_]\+\)/\1/'
-	'/\<DEVICE_ATTR_\(RW\|RO\|WO\)(\([[:alnum:]_]\+\)/dev_attr_\2/'
-	'/\<DRIVER_ATTR_\(RW\|RO\|WO\)(\([[:alnum:]_]\+\)/driver_attr_\2/'
-	'/\<\(DEFINE\|DECLARE\)_STATIC_KEY_\(TRUE\|FALSE\)\(\|_RO\)(\([[:alnum:]_]\+\)/\4/'
+	'/^SYSCALL_DEFINE[0-9]([[:space:]]*\([[:alnum:]_]*\).*/sys_\1/'
+	'/^BPF_CALL_[0-9]([[:space:]]*\([[:alnum:]_]*\).*/\1/'
+	'/^COMPAT_SYSCALL_DEFINE[0-9]([[:space:]]*\([[:alnum:]_]*\).*/compat_sys_\1/'
+	'/^TRACE_EVENT([[:space:]]*\([[:alnum:]_]*\).*/trace_\1/'
+	'/^TRACE_EVENT([[:space:]]*\([[:alnum:]_]*\).*/trace_\1_rcuidle/'
+	'/^DEFINE_EVENT([^,)]*,[[:space:]]*\([[:alnum:]_]*\).*/trace_\1/'
+	'/^DEFINE_EVENT([^,)]*,[[:space:]]*\([[:alnum:]_]*\).*/trace_\1_rcuidle/'
+	'/^DEFINE_INSN_CACHE_OPS([[:space:]]*\([[:alnum:]_]*\).*/get_\1_slot/'
+	'/^DEFINE_INSN_CACHE_OPS([[:space:]]*\([[:alnum:]_]*\).*/free_\1_slot/'
+	'/^PAGEFLAG([[:space:]]*\([[:alnum:]_]*\).*/Page\1/'
+	'/^PAGEFLAG([[:space:]]*\([[:alnum:]_]*\).*/SetPage\1/'
+	'/^PAGEFLAG([[:space:]]*\([[:alnum:]_]*\).*/ClearPage\1/'
+	'/^TESTSETFLAG([[:space:]]*\([[:alnum:]_]*\).*/TestSetPage\1/'
+	'/^TESTPAGEFLAG([[:space:]]*\([[:alnum:]_]*\).*/Page\1/'
+	'/^SETPAGEFLAG([[:space:]]*\([[:alnum:]_]*\).*/SetPage\1/'
+	'/\<__SETPAGEFLAG([[:space:]]*\([[:alnum:]_]*\).*/__SetPage\1/'
+	'/\<TESTCLEARFLAG([[:space:]]*\([[:alnum:]_]*\).*/TestClearPage\1/'
+	'/\<__TESTCLEARFLAG([[:space:]]*\([[:alnum:]_]*\).*/TestClearPage\1/'
+	'/\<CLEARPAGEFLAG([[:space:]]*\([[:alnum:]_]*\).*/ClearPage\1/'
+	'/\<__CLEARPAGEFLAG([[:space:]]*\([[:alnum:]_]*\).*/__ClearPage\1/'
+	'/^__PAGEFLAG([[:space:]]*\([[:alnum:]_]*\).*/__SetPage\1/'
+	'/^__PAGEFLAG([[:space:]]*\([[:alnum:]_]*\).*/__ClearPage\1/'
+	'/^PAGEFLAG_FALSE([[:space:]]*\([[:alnum:]_]*\).*/Page\1/'
+	'/\<TESTSCFLAG([[:space:]]*\([[:alnum:]_]*\).*/TestSetPage\1/'
+	'/\<TESTSCFLAG([[:space:]]*\([[:alnum:]_]*\).*/TestClearPage\1/'
+	'/\<SETPAGEFLAG_NOOP([[:space:]]*\([[:alnum:]_]*\).*/SetPage\1/'
+	'/\<CLEARPAGEFLAG_NOOP([[:space:]]*\([[:alnum:]_]*\).*/ClearPage\1/'
+	'/\<__CLEARPAGEFLAG_NOOP([[:space:]]*\([[:alnum:]_]*\).*/__ClearPage\1/'
+	'/\<TESTCLEARFLAG_FALSE([[:space:]]*\([[:alnum:]_]*\).*/TestClearPage\1/'
+	'/^PAGE_TYPE_OPS([[:space:]]*\([[:alnum:]_]*\).*/Page\1/'
+	'/^PAGE_TYPE_OPS([[:space:]]*\([[:alnum:]_]*\).*/__SetPage\1/'
+	'/^PAGE_TYPE_OPS([[:space:]]*\([[:alnum:]_]*\).*/__ClearPage\1/'
+	'/^TASK_PFA_TEST([^,]*,[[:space:]]*\([[:alnum:]_]*\))/task_\1/'
+	'/^TASK_PFA_SET([^,]*,[[:space:]]*\([[:alnum:]_]*\))/task_set_\1/'
+	'/^TASK_PFA_CLEAR([^,]*,[[:space:]]*\([[:alnum:]_]*\))/task_clear_\1/'
+	'/^DEF_MMIO_\(IN\|OUT\)_[XD]([[:space:]]*\([[:alnum:]_]*\),[^)]*)/\2/'
+	'/^DEBUGGER_BOILERPLATE([[:space:]]*\([[:alnum:]_]*\))/\1/'
+	'/^DEF_PCI_AC_\(\|NO\)RET([[:space:]]*\([[:alnum:]_]*\).*/\2/'
+	'/^PCI_OP_READ([[:space:]]*\(\w*\).*[1-4])/pci_bus_read_config_\1/'
+	'/^PCI_OP_WRITE([[:space:]]*\(\w*\).*[1-4])/pci_bus_write_config_\1/'
+	'/\<DEFINE_\(RT_MUTEX\|MUTEX\|SEMAPHORE\|SPINLOCK\)([[:space:]]*\([[:alnum:]_]*\)/\2/v/'
+	'/\<DEFINE_\(RAW_SPINLOCK\|RWLOCK\|SEQLOCK\)([[:space:]]*\([[:alnum:]_]*\)/\2/v/'
+	'/\<DECLARE_\(RWSEM\|COMPLETION\)([[:space:]]*\([[:alnum:]_]\+\)/\2/v/'
+	'/\<DECLARE_BITMAP([[:space:]]*\([[:alnum:]_]*\)/\1/v/'
+	'/\(^\|\s\)\(\|L\|H\)LIST_HEAD([[:space:]]*\([[:alnum:]_]*\)/\3/v/'
+	'/\(^\|\s\)RADIX_TREE([[:space:]]*\([[:alnum:]_]*\)/\2/v/'
+	'/\<DEFINE_PER_CPU([^,]*,[[:space:]]*\([[:alnum:]_]*\)/\1/v/'
+	'/\<DEFINE_PER_CPU_SHARED_ALIGNED([^,]*,[[:space:]]*\([[:alnum:]_]*\)/\1/v/'
+	'/\<DECLARE_WAIT_QUEUE_HEAD([[:space:]]*\([[:alnum:]_]*\)/\1/v/'
+	'/\<DECLARE_\(TASKLET\|WORK\|DELAYED_WORK\)([[:space:]]*\([[:alnum:]_]*\)/\2/v/'
+	'/\(^\s\)OFFSET([[:space:]]*\([[:alnum:]_]*\)/\2/v/'
+	'/\(^\s\)DEFINE([[:space:]]*\([[:alnum:]_]*\)/\2/v/'
+	'/\<\(DEFINE\|DECLARE\)_HASHTABLE([[:space:]]*\([[:alnum:]_]*\)/\2/v/'
+	'/\<DEFINE_ID\(R\|A\)([[:space:]]*\([[:alnum:]_]\+\)/\2/'
+	'/\<DEFINE_WD_CLASS([[:space:]]*\([[:alnum:]_]\+\)/\1/'
+	'/\<ATOMIC_NOTIFIER_HEAD([[:space:]]*\([[:alnum:]_]\+\)/\1/'
+	'/\<RAW_NOTIFIER_HEAD([[:space:]]*\([[:alnum:]_]\+\)/\1/'
+	'/\<DECLARE_FAULT_ATTR([[:space:]]*\([[:alnum:]_]\+\)/\1/'
+	'/\<BLOCKING_NOTIFIER_HEAD([[:space:]]*\([[:alnum:]_]\+\)/\1/'
+	'/\<DEVICE_ATTR_\(RW\|RO\|WO\)([[:space:]]*\([[:alnum:]_]\+\)/dev_attr_\2/'
+	'/\<DRIVER_ATTR_\(RW\|RO\|WO\)([[:space:]]*\([[:alnum:]_]\+\)/driver_attr_\2/'
+	'/\<\(DEFINE\|DECLARE\)_STATIC_KEY_\(TRUE\|FALSE\)\(\|_RO\)([[:space:]]*\([[:alnum:]_]\+\)/\4/'
 	'/^SEQCOUNT_LOCKTYPE(\([^,]*\),[[:space:]]*\([^,]*\),[^)]*)/seqcount_\2_t/'
 	'/^SEQCOUNT_LOCKTYPE(\([^,]*\),[[:space:]]*\([^,]*\),[^)]*)/seqcount_\2_init/'
 )
-- 
2.17.1

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