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From: Peter Enderborg <peter.enderborg@sony.com>
To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	"Sumit Semwal" <sumit.semwal@linaro.org>,
	"Christian König" <christian.koenig@amd.com>,
	"Alexey Dobriyan" <adobriyan@gmail.com>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Muchun Song" <songmuchun@bytedance.com>,
	"Roman Gushchin" <guro@fb.com>,
	"Shakeel Butt" <shakeelb@google.com>,
	"Michal Hocko" <mhocko@suse.com>, NeilBrown <neilb@suse.de>,
	"Sami Tolvanen" <samitolvanen@google.com>,
	"Mike Rapoport" <rppt@kernel.org>,
	linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org,
	linaro-mm-sig@lists.linaro.org,
	"Matthew Wilcox" <willy@infradead.org>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Randy Dunlap" <rdunlap@infradead.org>,
	"Kees Cook" <keescook@chromium.org>,
	"Mauro Carvalho Chehab" <mchehab+huawei@kernel.org>,
	"Alexey Gladkov" <gladkov.alexey@gmail.com>,
	"Feng Tang" <feng.tang@intel.com>,
	linux-doc@vger.kernel.org
Cc: Peter Enderborg <peter.enderborg@sony.com>
Subject: [PATCH 2/2 V6] lib/show_mem.c:  Add dma-buf counter to show_mem dump.
Date: Tue, 20 Apr 2021 10:22:20 +0200	[thread overview]
Message-ID: <20210420082220.7402-3-peter.enderborg@sony.com> (raw)
In-Reply-To: <20210420082220.7402-1-peter.enderborg@sony.com>

On system where dma-buf is used it can be many clients that adds up
to a lot of memory. This can be relevant for OOM handling when
running out of memory or how system handle this memory. It may be to free
with a kill.

Suggested-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Peter Enderborg <peter.enderborg@sony.com>
---
 lib/show_mem.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/show_mem.c b/lib/show_mem.c
index 1c26c14ffbb9..ec4748c64353 100644
--- a/lib/show_mem.c
+++ b/lib/show_mem.c
@@ -7,6 +7,7 @@
 
 #include <linux/mm.h>
 #include <linux/cma.h>
+#include <linux/dma-buf.h>
 
 void show_mem(unsigned int filter, nodemask_t *nodemask)
 {
@@ -41,4 +42,8 @@ void show_mem(unsigned int filter, nodemask_t *nodemask)
 #ifdef CONFIG_MEMORY_FAILURE
 	printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
 #endif
+#ifdef CONFIG_DMA_SHARED_BUFFER
+	printk("%lu pages dma-buf\n", dma_buf_allocated_pages());
+#endif
+
 }
-- 
2.17.1


WARNING: multiple messages have this Message-ID (diff)
From: Peter Enderborg <peter.enderborg@sony.com>
To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
	"Sumit Semwal" <sumit.semwal@linaro.org>,
	"Christian König" <christian.koenig@amd.com>,
	"Alexey Dobriyan" <adobriyan@gmail.com>,
	"Andrew Morton" <akpm@linux-foundation.org>,
	"Muchun Song" <songmuchun@bytedance.com>,
	"Roman Gushchin" <guro@fb.com>,
	"Shakeel Butt" <shakeelb@google.com>,
	"Michal Hocko" <mhocko@suse.com>, NeilBrown <neilb@suse.de>,
	"Sami Tolvanen" <samitolvanen@google.com>,
	"Mike Rapoport" <rppt@kernel.org>,
	linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org,
	linaro-mm-sig@lists.linaro.org,
	"Matthew Wilcox" <willy@infradead.org>,
	"Jonathan Corbet" <corbet@lwn.net>,
	"Randy Dunlap" <rdunlap@infradead.org>,
	"Kees Cook" <keescook@chromium.org>,
	"Mauro Carvalho Chehab" <mchehab+huawei@kernel.org>,
	"Alexey Gladkov" <gladkov.alexey@gmail.com>,
	"Feng Tang" <feng.tang@intel.com>,
	linux-doc@vger.kernel.org
Cc: Peter Enderborg <peter.enderborg@sony.com>
Subject: [PATCH 2/2 V6] lib/show_mem.c: Add dma-buf counter to show_mem dump.
Date: Tue, 20 Apr 2021 10:22:20 +0200	[thread overview]
Message-ID: <20210420082220.7402-3-peter.enderborg@sony.com> (raw)
In-Reply-To: <20210420082220.7402-1-peter.enderborg@sony.com>

On system where dma-buf is used it can be many clients that adds up
to a lot of memory. This can be relevant for OOM handling when
running out of memory or how system handle this memory. It may be to free
with a kill.

Suggested-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Peter Enderborg <peter.enderborg@sony.com>
---
 lib/show_mem.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/show_mem.c b/lib/show_mem.c
index 1c26c14ffbb9..ec4748c64353 100644
--- a/lib/show_mem.c
+++ b/lib/show_mem.c
@@ -7,6 +7,7 @@
 
 #include <linux/mm.h>
 #include <linux/cma.h>
+#include <linux/dma-buf.h>
 
 void show_mem(unsigned int filter, nodemask_t *nodemask)
 {
@@ -41,4 +42,8 @@ void show_mem(unsigned int filter, nodemask_t *nodemask)
 #ifdef CONFIG_MEMORY_FAILURE
 	printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
 #endif
+#ifdef CONFIG_DMA_SHARED_BUFFER
+	printk("%lu pages dma-buf\n", dma_buf_allocated_pages());
+#endif
+
 }
-- 
2.17.1

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  parent reply	other threads:[~2021-04-20  8:23 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-20  8:22 [PATCH 0/2 V6]Add dma-buf counter Peter Enderborg
2021-04-20  8:22 ` Peter Enderborg
2021-04-20  8:22 ` [PATCH 1/2 V6] dma-buf: Add DmaBufTotal counter in meminfo Peter Enderborg
2021-04-20  8:22   ` Peter Enderborg
2021-04-20  8:22 ` Peter Enderborg [this message]
2021-04-20  8:22   ` [PATCH 2/2 V6] lib/show_mem.c: Add dma-buf counter to show_mem dump Peter Enderborg
2021-04-20  8:30 ` [PATCH 0/2 V6]Add dma-buf counter Michal Hocko
2021-04-20  8:30   ` Michal Hocko

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