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From: Qiang Yu <qiang.yu@amd.com>
To: linux-mm@kvack.org, cgroups@vger.kernel.org,
	dri-devel@lists.freedesktop.org
Cc: David Airlie <airlied@linux.ie>, Kenny Ho <kenny.ho@amd.com>,
	Michal Hocko <mhocko@kernel.org>, Qiang Yu <qiang.yu@amd.com>,
	Huang Rui <ray.huang@amd.com>,
	Johannes Weiner <hannes@cmpxchg.org>, Tejun Heo <tj@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Christian Koenig <christian.koenig@amd.com>
Subject: [PATCH RFC 2/3] mm: memcontrol: record driver memory statistics
Date: Mon, 13 Jan 2020 23:35:42 +0800	[thread overview]
Message-ID: <20200113153543.24957-3-qiang.yu@amd.com> (raw)
In-Reply-To: <20200113153543.24957-1-qiang.yu@amd.com>

Signed-off-by: Qiang Yu <qiang.yu@amd.com>
---
 include/linux/memcontrol.h | 1 +
 mm/memcontrol.c            | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index d76977943265..6518b4b5ee07 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -36,6 +36,7 @@ enum memcg_stat_item {
 	MEMCG_SOCK,
 	/* XXX: why are these zone and not node counters? */
 	MEMCG_KERNEL_STACK_KB,
+	MEMCG_DRV,
 	MEMCG_NR_STAT,
 };
 
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 28595c276e6b..cdd3f3401598 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1413,6 +1413,9 @@ static char *memory_stat_format(struct mem_cgroup *memcg)
 	seq_buf_printf(&s, "sock %llu\n",
 		       (u64)memcg_page_state(memcg, MEMCG_SOCK) *
 		       PAGE_SIZE);
+	seq_buf_printf(&s, "driver %llu\n",
+		       (u64)memcg_page_state(memcg, MEMCG_DRV) *
+		       PAGE_SIZE);
 
 	seq_buf_printf(&s, "shmem %llu\n",
 		       (u64)memcg_page_state(memcg, NR_SHMEM) *
@@ -6947,6 +6950,9 @@ EXPORT_SYMBOL(mem_cgroup_driver_get_from_current);
 int mem_cgroup_charge_drvmem(struct mem_cgroup *memcg, gfp_t gfp,
 			     unsigned long nr_pages)
 {
+	if (cgroup_subsys_on_dfl(memory_cgrp_subsys))
+		mod_memcg_state(memcg, MEMCG_DRV, nr_pages);
+
 	return try_charge(memcg, gfp, nr_pages);
 }
 EXPORT_SYMBOL(mem_cgroup_charge_drvmem);
@@ -6958,6 +6964,9 @@ EXPORT_SYMBOL(mem_cgroup_charge_drvmem);
  */
 void mem_cgroup_uncharge_drvmem(struct mem_cgroup *memcg, unsigned long nr_pages)
 {
+	if (cgroup_subsys_on_dfl(memory_cgrp_subsys))
+		mod_memcg_state(memcg, MEMCG_DRV, -nr_pages);
+
 	refill_stock(memcg, nr_pages);
 }
 EXPORT_SYMBOL(mem_cgroup_uncharge_drvmem);
-- 
2.17.1

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  parent reply	other threads:[~2020-01-13 15:37 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-13 15:35 [PATCH RFC 0/3] mm/memcontrol drm/ttm: charge ttm buffer backed by system memory Qiang Yu
2020-01-13 15:35 ` [PATCH RFC 1/3] mm: memcontrol: add mem_cgroup_(un)charge_drvmem Qiang Yu
2020-01-13 15:35 ` Qiang Yu [this message]
2020-01-13 15:35 ` [PATCH RFC 3/3] drm/ttm: support memcg for ttm_tt Qiang Yu
2020-01-13 15:55   ` Christian König
2020-01-19  2:47     ` Qiang Yu
2020-01-19 13:03       ` Christian König

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