linux-kernel - [PATCH] mm-cma-add-trace-events-for-cma-allocations-and-freeings-fix

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Date:	Thu, 02 Apr 2015 16:13:17 +0300
From:	Stefan Strogin <stefan.strogin@...il.com>
To:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Stefan Strogin <stefan.strogin@...il.com>,
	Stefan Strogin <s.strogin@...tner.samsung.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Ingo Molnar <mingo@...hat.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Michal Nazarewicz <mina86@...a86.com>,
	aneesh.kumar@...ux.vnet.ibm.com,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	Dmitry Safonov <d.safonov@...tner.samsung.com>,
	Pintu Kumar <pintu.k@...sung.com>,
	Laura Abbott <lauraa@...eaurora.org>,
	Dyasly Sergey <s.dyasly@...sung.com>,
	Vyacheslav Tyrtov <v.tyrtov@...sung.com>,
	Aleksei Mateosian <a.mateosian@...sung.com>, gioh.kim@....com
Subject: [PATCH] mm-cma-add-trace-events-for-cma-allocations-and-freeings-fix

Trace 'align' too in cma_alloc trace event.

Signed-off-by: Stefan Strogin <stefan.strogin@...il.com>
---
 include/trace/events/cma.h | 11 +++++++----
 mm/cma.c                   |  2 +-
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/include/trace/events/cma.h b/include/trace/events/cma.h
index e01b35d..d7cd961 100644
--- a/include/trace/events/cma.h
+++ b/include/trace/events/cma.h
@@ -10,26 +10,29 @@
 TRACE_EVENT(cma_alloc,
 
 	TP_PROTO(unsigned long pfn, const struct page *page,
-		 unsigned int count),
+		 unsigned int count, unsigned int align),
 
-	TP_ARGS(pfn, page, count),
+	TP_ARGS(pfn, page, count, align),
 
 	TP_STRUCT__entry(
 		__field(unsigned long, pfn)
 		__field(const struct page *, page)
 		__field(unsigned int, count)
+		__field(unsigned int, align)
 	),
 
 	TP_fast_assign(
 		__entry->pfn = pfn;
 		__entry->page = page;
 		__entry->count = count;
+		__entry->align = align;
 	),
 
-	TP_printk("pfn=%lx page=%p count=%u",
+	TP_printk("pfn=%lx page=%p count=%u align=%u",
 		  __entry->pfn,
 		  __entry->page,
-		  __entry->count)
+		  __entry->count,
+		  __entry->align)
 );
 
 TRACE_EVENT(cma_release,
diff --git a/mm/cma.c b/mm/cma.c
index e9410b7c..3a7a67b 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -416,7 +416,7 @@ struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align)
 		start = bitmap_no + mask + 1;
 	}
 
-	trace_cma_alloc(page ? pfn : -1UL, page, count);
+	trace_cma_alloc(page ? pfn : -1UL, page, count, align);
 
 	pr_debug("%s(): returned %p\n", __func__, page);
 	return page;
-- 
2.1.0

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