From: Stefan Strogin <s.strogin@partner.samsung.com>
To: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: Stefan Strogin <s.strogin@partner.samsung.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>,
Andrew Morton <akpm@linux-foundation.org>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Michal Nazarewicz <mina86@mina86.com>,
aneesh.kumar@linux.vnet.ibm.com,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Dmitry Safonov <d.safonov@partner.samsung.com>,
Pintu Kumar <pintu.k@samsung.com>,
Weijie Yang <weijie.yang@samsung.com>,
Laura Abbott <lauraa@codeaurora.org>,
SeongJae Park <sj38.park@gmail.com>, Hui Zhu <zhuhui@xiaomi.com>,
Minchan Kim <minchan@kernel.org>,
Dyasly Sergey <s.dyasly@samsung.com>,
Vyacheslav Tyrtov <v.tyrtov@samsung.com>,
Aleksei Mateosian <a.mateosian@samsung.com>,
gregory.0xf0@gmail.com, sasha.levin@oracle.com, gioh.kim@lge.com,
pavel@ucw.cz, stefan.strogin@gmail.com
Subject: [PATCH v4 1/5] mm: cma: add trace events to debug physically-contiguous memory allocations
Date: Mon, 16 Mar 2015 19:06:56 +0300 [thread overview]
Message-ID: <a1127b32325d3c527636912eefd6892bd8fc746d.1426521377.git.s.strogin@partner.samsung.com> (raw)
In-Reply-To: <cover.1426521377.git.s.strogin@partner.samsung.com>
In-Reply-To: <cover.1426521377.git.s.strogin@partner.samsung.com>
Add trace events for cma_alloc() and cma_release().
Signed-off-by: Stefan Strogin <stefan.strogin@gmail.com>
---
include/trace/events/cma.h | 57 ++++++++++++++++++++++++++++++++++++++++++++++
mm/cma.c | 5 ++++
2 files changed, 62 insertions(+)
create mode 100644 include/trace/events/cma.h
diff --git a/include/trace/events/cma.h b/include/trace/events/cma.h
new file mode 100644
index 0000000..d88881b
--- /dev/null
+++ b/include/trace/events/cma.h
@@ -0,0 +1,57 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM cma
+
+#if !defined(_TRACE_CMA_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_CMA_H
+
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(cma_alloc,
+
+ TP_PROTO(struct cma *cma, struct page *page, int count),
+
+ TP_ARGS(cma, page, count),
+
+ TP_STRUCT__entry(
+ __field(struct page *, page)
+ __field(unsigned long, count)
+ ),
+
+ TP_fast_assign(
+ __entry->page = page;
+ __entry->count = count;
+ ),
+
+ TP_printk("page=%p pfn=%lu count=%lu",
+ __entry->page,
+ __entry->page ? page_to_pfn(__entry->page) : 0,
+ __entry->count)
+);
+
+TRACE_EVENT(cma_release,
+
+ TP_PROTO(struct cma *cma, unsigned long pfn, int count),
+
+ TP_ARGS(cma, pfn, count),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, pfn)
+ __field(unsigned long, count)
+ ),
+
+ TP_fast_assign(
+ __entry->pfn = pfn;
+ __entry->count = count;
+ ),
+
+ TP_printk("pfn=%lu page=%p count=%lu",
+ __entry->pfn,
+ pfn_to_page(__entry->pfn),
+ __entry->count)
+);
+
+#endif /* _TRACE_CMA_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/mm/cma.c b/mm/cma.c
index 47203fa..63dfc0e 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -23,6 +23,7 @@
# define DEBUG
#endif
#endif
+#define CREATE_TRACE_POINTS
#include <linux/memblock.h>
#include <linux/err.h>
@@ -34,6 +35,7 @@
#include <linux/cma.h>
#include <linux/highmem.h>
#include <linux/io.h>
+#include <trace/events/cma.h>
#include "cma.h"
@@ -414,6 +416,8 @@ struct page *cma_alloc(struct cma *cma, unsigned int count, unsigned int align)
start = bitmap_no + mask + 1;
}
+ trace_cma_alloc(cma, page, count);
+
pr_debug("%s(): returned %p\n", __func__, page);
return page;
}
@@ -446,6 +450,7 @@ bool cma_release(struct cma *cma, const struct page *pages, unsigned int count)
free_contig_range(pfn, count);
cma_clear_bitmap(cma, pfn, count);
+ trace_cma_release(cma, pfn, count);
return true;
}
--
2.1.0
--
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next prev parent reply other threads:[~2015-03-16 16:08 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-16 16:06 [PATCH v4 0/5] mm: cma: add some debug information for CMA Stefan Strogin
2015-03-16 16:06 ` Stefan Strogin [this message]
2015-03-16 20:49 ` [PATCH v4 1/5] mm: cma: add trace events to debug physically-contiguous memory allocations Stefan Strogin
2015-03-16 23:47 ` Steven Rostedt
2015-03-19 20:18 ` Stefan Strogin
2015-03-19 20:34 ` Steven Rostedt
2015-03-20 10:46 ` Stefan Strogin
2015-03-20 14:31 ` Steven Rostedt
2015-03-17 7:40 ` Ingo Molnar
2015-03-19 20:22 ` Stefan Strogin
2015-03-23 14:04 ` Ingo Molnar
2015-03-16 16:06 ` [PATCH v4 2/5] mm: cma: add number of pages to debug message in cma_release() Stefan Strogin
2015-03-16 16:06 ` [PATCH v4 3/5] stacktrace: add seq_print_stack_trace() Stefan Strogin
2015-03-16 17:33 ` Michal Nazarewicz
2015-03-16 16:06 ` [PATCH v4 4/5] mm: cma: add list of currently allocated CMA buffers to debugfs Stefan Strogin
2015-03-16 17:51 ` Michal Nazarewicz
2015-03-16 16:09 ` [PATCH v4 5/5] mm: cma: add functions to get region pages counters Stefan Strogin
2015-03-17 1:43 ` [PATCH v4 0/5] mm: cma: add some debug information for CMA Joonsoo Kim
2015-03-17 1:54 ` Sasha Levin
2015-03-17 2:04 ` Joonsoo Kim
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