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Message-Id: <20230130042514.2418-2-42.hyeyoo@gmail.com>
Date: Mon, 30 Jan 2023 13:25:12 +0900
From: Hyeonggon Yoo <42.hyeyoo@...il.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Joe Perches <joe@...ches.com>, Petr Mladek <pmladek@...e.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Steven Rostedt <rostedt@...dmis.org>,
Vlastimil Babka <vbabka@...e.cz>,
Matthew WilCox <willy@...radead.org>,
David Hildenbrand <david@...hat.com>,
Hyeonggon Yoo <42.hyeyoo@...il.com>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org
Subject: [PATCH mm-unstable v4 1/3] mmflags.h: use less error prone method to define pageflag_names
As suggested by Andy Shevchenko, use helper macro to decrease chances
of typo when defining pageflag_names.
Link: https://lore.kernel.org/lkml/Y6AycLbpjVzXM5I9@smile.fi.intel.com
Signed-off-by: Hyeonggon Yoo <42.hyeyoo@...il.com>
---
include/trace/events/mmflags.h | 85 ++++++++++++++++++----------------
1 file changed, 44 insertions(+), 41 deletions(-)
diff --git a/include/trace/events/mmflags.h b/include/trace/events/mmflags.h
index 9db52bc4ce19..f453babe29b3 100644
--- a/include/trace/events/mmflags.h
+++ b/include/trace/events/mmflags.h
@@ -67,71 +67,74 @@
) : "none"
#ifdef CONFIG_MMU
-#define IF_HAVE_PG_MLOCK(flag,string) ,{1UL << flag, string}
+#define IF_HAVE_PG_MLOCK(_name) ,{1UL << PG_##_name, __stringify(_name)}
#else
-#define IF_HAVE_PG_MLOCK(flag,string)
+#define IF_HAVE_PG_MLOCK(_name)
#endif
#ifdef CONFIG_ARCH_USES_PG_UNCACHED
-#define IF_HAVE_PG_UNCACHED(flag,string) ,{1UL << flag, string}
+#define IF_HAVE_PG_UNCACHED(_name) ,{1UL << PG_##_name, __stringify(_name)}
#else
-#define IF_HAVE_PG_UNCACHED(flag,string)
+#define IF_HAVE_PG_UNCACHED(_name)
#endif
#ifdef CONFIG_MEMORY_FAILURE
-#define IF_HAVE_PG_HWPOISON(flag,string) ,{1UL << flag, string}
+#define IF_HAVE_PG_HWPOISON(_name) ,{1UL << PG_##_name, __stringify(_name)}
#else
-#define IF_HAVE_PG_HWPOISON(flag,string)
+#define IF_HAVE_PG_HWPOISON(_name)
#endif
#if defined(CONFIG_PAGE_IDLE_FLAG) && defined(CONFIG_64BIT)
-#define IF_HAVE_PG_IDLE(flag,string) ,{1UL << flag, string}
+#define IF_HAVE_PG_IDLE(_name) ,{1UL << PG_##_name, __stringify(_name)}
#else
-#define IF_HAVE_PG_IDLE(flag,string)
+#define IF_HAVE_PG_IDLE(_name)
#endif
#ifdef CONFIG_ARCH_USES_PG_ARCH_X
-#define IF_HAVE_PG_ARCH_X(flag,string) ,{1UL << flag, string}
+#define IF_HAVE_PG_ARCH_X(_name) ,{1UL << PG_##_name, __stringify(_name)}
#else
-#define IF_HAVE_PG_ARCH_X(flag,string)
+#define IF_HAVE_PG_ARCH_X(_name)
#endif
#ifdef CONFIG_KASAN_HW_TAGS
-#define IF_HAVE_PG_SKIP_KASAN_POISON(flag,string) ,{1UL << flag, string}
+#define IF_HAVE_PG_SKIP_KASAN_POISON(_name) \
+ ,{1UL << PG_##_name, __stringify(_name)}
#else
-#define IF_HAVE_PG_SKIP_KASAN_POISON(flag,string)
+#define IF_HAVE_PG_SKIP_KASAN_POISON(_name)
#endif
+#define DEF_PAGEFLAG_NAME(_name) { 1UL << PG_##_name, __stringify(_name) }
+
#define __def_pageflag_names \
- {1UL << PG_locked, "locked" }, \
- {1UL << PG_waiters, "waiters" }, \
- {1UL << PG_error, "error" }, \
- {1UL << PG_referenced, "referenced" }, \
- {1UL << PG_uptodate, "uptodate" }, \
- {1UL << PG_dirty, "dirty" }, \
- {1UL << PG_lru, "lru" }, \
- {1UL << PG_active, "active" }, \
- {1UL << PG_workingset, "workingset" }, \
- {1UL << PG_slab, "slab" }, \
- {1UL << PG_owner_priv_1, "owner_priv_1" }, \
- {1UL << PG_arch_1, "arch_1" }, \
- {1UL << PG_reserved, "reserved" }, \
- {1UL << PG_private, "private" }, \
- {1UL << PG_private_2, "private_2" }, \
- {1UL << PG_writeback, "writeback" }, \
- {1UL << PG_head, "head" }, \
- {1UL << PG_mappedtodisk, "mappedtodisk" }, \
- {1UL << PG_reclaim, "reclaim" }, \
- {1UL << PG_swapbacked, "swapbacked" }, \
- {1UL << PG_unevictable, "unevictable" } \
-IF_HAVE_PG_MLOCK(PG_mlocked, "mlocked" ) \
-IF_HAVE_PG_UNCACHED(PG_uncached, "uncached" ) \
-IF_HAVE_PG_HWPOISON(PG_hwpoison, "hwpoison" ) \
-IF_HAVE_PG_IDLE(PG_young, "young" ) \
-IF_HAVE_PG_IDLE(PG_idle, "idle" ) \
-IF_HAVE_PG_ARCH_X(PG_arch_2, "arch_2" ) \
-IF_HAVE_PG_ARCH_X(PG_arch_3, "arch_3" ) \
-IF_HAVE_PG_SKIP_KASAN_POISON(PG_skip_kasan_poison, "skip_kasan_poison")
+ DEF_PAGEFLAG_NAME(locked), \
+ DEF_PAGEFLAG_NAME(waiters), \
+ DEF_PAGEFLAG_NAME(error), \
+ DEF_PAGEFLAG_NAME(referenced), \
+ DEF_PAGEFLAG_NAME(uptodate), \
+ DEF_PAGEFLAG_NAME(dirty), \
+ DEF_PAGEFLAG_NAME(lru), \
+ DEF_PAGEFLAG_NAME(active), \
+ DEF_PAGEFLAG_NAME(workingset), \
+ DEF_PAGEFLAG_NAME(slab), \
+ DEF_PAGEFLAG_NAME(owner_priv_1), \
+ DEF_PAGEFLAG_NAME(arch_1), \
+ DEF_PAGEFLAG_NAME(reserved), \
+ DEF_PAGEFLAG_NAME(private), \
+ DEF_PAGEFLAG_NAME(private_2), \
+ DEF_PAGEFLAG_NAME(writeback), \
+ DEF_PAGEFLAG_NAME(head), \
+ DEF_PAGEFLAG_NAME(mappedtodisk), \
+ DEF_PAGEFLAG_NAME(reclaim), \
+ DEF_PAGEFLAG_NAME(swapbacked), \
+ DEF_PAGEFLAG_NAME(unevictable) \
+IF_HAVE_PG_MLOCK(mlocked) \
+IF_HAVE_PG_UNCACHED(uncached) \
+IF_HAVE_PG_HWPOISON(hwpoison) \
+IF_HAVE_PG_IDLE(idle) \
+IF_HAVE_PG_IDLE(young) \
+IF_HAVE_PG_ARCH_X(arch_2) \
+IF_HAVE_PG_ARCH_X(arch_3) \
+IF_HAVE_PG_SKIP_KASAN_POISON(skip_kasan_poison)
#define show_page_flags(flags) \
(flags) ? __print_flags(flags, "|", \
--
2.39.1
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