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CMA: add the amount of cma memory in meminfo

PATCH In review Xishi Qiu 2 participants 2 messages Dec 19, 2014

Subsystems (4)
Memory management MM core Driver core Proc filesystem
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Xishi Qiu

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#0 lore raw

PATCH v2 1/1 CMA: add the amount of cma memory in meminfo

Add the amount of cma memory in the following meminfo. /proc/meminfo /sys/devices/system/node/nodeXX/meminfo

Signed-off-by Xishi Qiu <[email protected]>
---
 drivers/base/node.c | 16 ++++++++++------
 fs/proc/meminfo.c   |  6 ++++++
 2 files changed, 16 insertions(+), 6 deletions(-)
drivers/base/node.c +10 -6
index 472168c..bc123f9 100644
@@ -120,6 +120,9 @@ static ssize_t node_read_meminfo(struct device *dev,
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 		       "Node %d AnonHugePages:  %8lu kB\n"
 #endif
+#ifdef CONFIG_CMA
+		       "Node %d FreeCMAPages:   %8lu kB\n"
+#endif
 			,
 		       nid, K(node_page_state(nid, NR_FILE_DIRTY)),
 		       nid, K(node_page_state(nid, NR_WRITEBACK)),

@@ -136,14 +139,15 @@ static ssize_t node_read_meminfo(struct device *dev,
 		       nid, K(node_page_state(nid, NR_SLAB_RECLAIMABLE) +
 				node_page_state(nid, NR_SLAB_UNRECLAIMABLE)),
 		       nid, K(node_page_state(nid, NR_SLAB_RECLAIMABLE)),
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
 		       nid, K(node_page_state(nid, NR_SLAB_UNRECLAIMABLE))
-			, nid,
-			K(node_page_state(nid, NR_ANON_TRANSPARENT_HUGEPAGES) *
-			HPAGE_PMD_NR));
-#else
-		       nid, K(node_page_state(nid, NR_SLAB_UNRECLAIMABLE)));
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
+		       ,nid, K(node_page_state(nid,
+			NR_ANON_TRANSPARENT_HUGEPAGES) * HPAGE_PMD_NR)
+#endif
+#ifdef CONFIG_CMA
+		       ,nid, K(node_page_state(nid, NR_FREE_CMA_PAGES))
 #endif
+			);
 	n += hugetlb_report_node_meminfo(nid, buf + n);
 	return n;
 }
fs/proc/meminfo.c +6 -0
index aa1eee0..9a7e446 100644
@@ -138,6 +138,9 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 		"AnonHugePages:  %8lu kB\n"
 #endif
+#ifdef CONFIG_CMA
+		"FreeCMAPages:   %8lu kB\n"
+#endif
 		,
 		K(i.totalram),
 		K(i.freeram),

@@ -193,6 +196,9 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
 		,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
 		   HPAGE_PMD_NR)
 #endif
+#ifdef CONFIG_CMA
+		,K(global_page_state(NR_FREE_CMA_PAGES))
+#endif
 		);
 
 	hugetlb_report_meminfo(m);
Signature · 1 line
2.0.0
maintainer
#1 lore raw
Quoted 2 lines · On Fri, 19 Dec 2014 09:33:06 +0800 Xishi Qiu <[email protected]> wrote:

Add the amount of cma memory in the following meminfo. /proc/meminfo

We just did this.

Quoted 1 line

/sys/devices/system/node/nodeXX/meminfo

But not this.

See

commit 47f8f9297d2247d65ee46d8403a73b30f8d0249b

Author: Pintu Kumar <[email protected]>
Date:   Thu Dec 18 16:17:18 2014 -0800

fs/proc/meminfo.c: include cma info in proc/meminfo