Re: [PATCH] scripts/tags.sh: add regular expression replacement pattern for memcg

From: Jianyu Zhan
Date: Thu Apr 10 2014 - 08:59:13 EST


Sorry, the comment in previous patch is somewhat misguiding, this patch
replaces that one.

Currently, no regular expression replacement patterns for PageCgroup*
flag-ops are defined, which causes quite a few pain while reading code.
Just get rid of it.

Also, add a comment to inform people to add pattern for whatever new
flag-ops they add.

Signed-off-by: Jianyu Zhan <nasa4836@xxxxxxxxx>
---
include/linux/page_cgroup.h | 6 ++++++
scripts/tags.sh | 8 ++++++++
2 files changed, 14 insertions(+)

diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h
index 777a524..9c60b77 100644
--- a/include/linux/page_cgroup.h
+++ b/include/linux/page_cgroup.h
@@ -44,6 +44,12 @@ static inline void __init page_cgroup_init(void)
struct page_cgroup *lookup_page_cgroup(struct page *page);
struct page *lookup_cgroup_page(struct page_cgroup *pc);

+/*
+ * Note, whenever you add a *PCGFLAG operation here, please add a
+ * regular expression replacement pattern in scripts/tags.sh
+ * to inform our friendly and smart tags generator.
+ */
+
#define TESTPCGFLAG(uname, lname) \
static inline int PageCgroup##uname(struct page_cgroup *pc) \
{ return test_bit(PCG_##lname, &pc->flags); }
diff --git a/scripts/tags.sh b/scripts/tags.sh
index 58c4559..c0d52d1 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -171,12 +171,16 @@ exuberant()
--regex-c++='/PAGEFLAG\(([^,)]*).*/ClearPage\1/' \
--regex-c++='/TESTSETFLAG\(([^,)]*).*/TestSetPage\1/' \
--regex-c++='/TESTPAGEFLAG\(([^,)]*).*/Page\1/' \
+ --regex-c++='/TESTPCGFLAG\(([^,)]*).*/PageCgroup\1/' \
--regex-c++='/SETPAGEFLAG\(([^,)]*).*/SetPage\1/' \
--regex-c++='/__SETPAGEFLAG\(([^,)]*).*/__SetPage\1/' \
+ --regex-c++='/SETPCGFLAG\(([^,)]*).*/SetPageCgroup\1/' \
--regex-c++='/TESTCLEARFLAG\(([^,)]*).*/TestClearPage\1/' \
--regex-c++='/__TESTCLEARFLAG\(([^,)]*).*/TestClearPage\1/' \
+ --regex-c++='/TESTCLEARPCGFLAG\(([^,)]*).*/TestClearPageCgroup\1/' \
--regex-c++='/CLEARPAGEFLAG\(([^,)]*).*/ClearPage\1/' \
--regex-c++='/__CLEARPAGEFLAG\(([^,)]*).*/__ClearPage\1/' \
+ --regex-c++='/CLEARPCGFLAG\(([^,)]*).*/ClearPageCgroup\1/' \
--regex-c++='/__PAGEFLAG\(([^,)]*).*/__SetPage\1/' \
--regex-c++='/__PAGEFLAG\(([^,)]*).*/__ClearPage\1/' \
--regex-c++='/PAGEFLAG_FALSE\(([^,)]*).*/Page\1/' \
@@ -229,12 +233,16 @@ emacs()
--regex='/PAGEFLAG(\([^,)]*\).*/ClearPage\1/' \
--regex='/TESTSETFLAG(\([^,)]*\).*/TestSetPage\1/' \
--regex='/TESTPAGEFLAG(\([^,)]*\).*/Page\1/' \
+ --regex='/TESTPCGFLAG\(([^,)]*).*/PageCgroup\1/' \
--regex='/SETPAGEFLAG(\([^,)]*\).*/SetPage\1/' \
--regex='/__SETPAGEFLAG(\([^,)]*\).*/__SetPage\1/' \
+ --regex='/SETPCGFLAG\(([^,)]*).*/SetPageCgroup\1/' \
--regex='/TESTCLEARFLAG(\([^,)]*\).*/TestClearPage\1/' \
--regex='/__TESTCLEARFLAG(\([^,)]*\).*/TestClearPage\1/' \
+ --regex='/TESTCLEARPCGFLAG\(([^,)]*).*/TestClearPageCgroup\1/' \
--regex='/CLEARPAGEFLAG(\([^,)]*\).*/ClearPage\1/' \
--regex='/__CLEARPAGEFLAG(\([^,)]*\).*/__ClearPage\1/' \
+ --regex='/CLEARPCGFLAG\(([^,)]*).*/ClearPageCgroup\1/' \
--regex='/__PAGEFLAG(\([^,)]*\).*/__SetPage\1/' \
--regex='/__PAGEFLAG(\([^,)]*\).*/__ClearPage\1/' \
--regex='/PAGEFLAG_FALSE(\([^,)]*\).*/Page\1/' \
--
1.9.0.GIT

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