linux-kernel - [PATCH v3 02/14] mm, tracing: make show_gfp

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Date:	Fri, 18 Dec 2015 10:03:14 +0100
From:	Vlastimil Babka <vbabka@...e.cz>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Vlastimil Babka <vbabka@...e.cz>,
	Steven Rostedt <rostedt@...dmis.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Ingo Molnar <mingo@...hat.com>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Minchan Kim <minchan@...nel.org>,
	Sasha Levin <sasha.levin@...cle.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Mel Gorman <mgorman@...e.de>, Michal Hocko <mhocko@...e.cz>
Subject: [PATCH v3 02/14] mm, tracing: make show_gfp_flags() up to date

The show_gfp_flags() macro provides human-friendly printing of gfp flags in
tracepoints. However, it is somewhat out of date and missing several flags.
This patches fills in the missing flags, and distinguishes properly between
GFP_ATOMIC and __GFP_ATOMIC which were both translated to "GFP_ATOMIC".

Also add a note in gfp.h so hopefully future changes will be synced better.

Signed-off-by: Vlastimil Babka <vbabka@...e.cz>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Rasmus Villemoes <linux@...musvillemoes.dk>
Cc: Joonsoo Kim <iamjoonsoo.kim@....com>
Cc: Minchan Kim <minchan@...nel.org>
Cc: Sasha Levin <sasha.levin@...cle.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc: Mel Gorman <mgorman@...e.de>
Cc: Michal Hocko <mhocko@...e.cz>
---
 include/linux/gfp.h             | 5 +++++
 include/trace/events/gfpflags.h | 9 +++++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 91f74e741aa2..6ffee7f93af7 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -9,6 +9,11 @@
 
 struct vm_area_struct;
 
+/*
+ * In case of changes, please don't forget to update
+ * include/trace/events/gfpflags.h
+ */
+
 /* Plain integer GFP bitmasks. Do not use this directly. */
 #define ___GFP_DMA		0x01u
 #define ___GFP_HIGHMEM		0x02u
diff --git a/include/trace/events/gfpflags.h b/include/trace/events/gfpflags.h
index dde6bf092c8a..8395798d97b0 100644
--- a/include/trace/events/gfpflags.h
+++ b/include/trace/events/gfpflags.h
@@ -19,9 +19,13 @@
 	{(unsigned long)GFP_NOFS,		"GFP_NOFS"},		\
 	{(unsigned long)GFP_ATOMIC,		"GFP_ATOMIC"},		\
 	{(unsigned long)GFP_NOIO,		"GFP_NOIO"},		\
+	{(unsigned long)GFP_NOWAIT,		"GFP_NOWAIT"},		\
+	{(unsigned long)__GFP_DMA,		"GFP_DMA"},		\
+	{(unsigned long)__GFP_DMA32,		"GFP_DMA32"},		\
 	{(unsigned long)__GFP_HIGH,		"GFP_HIGH"},		\
-	{(unsigned long)__GFP_ATOMIC,		"GFP_ATOMIC"},		\
+	{(unsigned long)__GFP_ATOMIC,		"__GFP_ATOMIC"},	\
 	{(unsigned long)__GFP_IO,		"GFP_IO"},		\
+	{(unsigned long)__GFP_FS,		"GFP_FS"},		\
 	{(unsigned long)__GFP_COLD,		"GFP_COLD"},		\
 	{(unsigned long)__GFP_NOWARN,		"GFP_NOWARN"},		\
 	{(unsigned long)__GFP_REPEAT,		"GFP_REPEAT"},		\
@@ -36,8 +40,9 @@
 	{(unsigned long)__GFP_RECLAIMABLE,	"GFP_RECLAIMABLE"},	\
 	{(unsigned long)__GFP_MOVABLE,		"GFP_MOVABLE"},		\
 	{(unsigned long)__GFP_NOTRACK,		"GFP_NOTRACK"},		\
+	{(unsigned long)__GFP_WRITE,		"GFP_WRITE"},		\
 	{(unsigned long)__GFP_DIRECT_RECLAIM,	"GFP_DIRECT_RECLAIM"},	\
 	{(unsigned long)__GFP_KSWAPD_RECLAIM,	"GFP_KSWAPD_RECLAIM"},	\
 	{(unsigned long)__GFP_OTHER_NODE,	"GFP_OTHER_NODE"}	\
-	) : "GFP_NOWAIT"
+	) : "none"
 
-- 
2.6.3

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