[PATCH v8 4/6] mm: memcg: add per-memcg zswap writeback stat (fix)

From: Nhat Pham <nphamcs@gmail.com>
To: akpm@linux-foundation.org
Cc: hannes@cmpxchg.org, cerasuolodomenico@gmail.com,
	yosryahmed@google.com, sjenning@redhat.com, ddstreet@ieee.org,
	vitaly.wool@konsulko.com, mhocko@kernel.org,
	roman.gushchin@linux.dev, shakeelb@google.com,
	muchun.song@linux.dev, chrisl@kernel.org, linux-mm@kvack.org,
	kernel-team@meta.com, linux-kernel@vger.kernel.org,
	cgroups@vger.kernel.org, linux-doc@vger.kernel.org,
	linux-kselftest@vger.kernel.org, shuah@kernel.org
Subject: [PATCH v8 4/6] mm: memcg: add per-memcg zswap writeback stat (fix)
Date: Tue,  5 Dec 2023 11:33:07 -0800	[thread overview]
Message-ID: <20231205193307.2432803-1-nphamcs@gmail.com> (raw)
In-Reply-To: <20231130194023.4102148-5-nphamcs@gmail.com>

Rename ZSWP_WB to ZSWPWB to better match the existing counters naming
scheme.

Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Nhat Pham <nphamcs@gmail.com>
---
 include/linux/vm_event_item.h | 2 +-
 mm/memcontrol.c               | 2 +-
 mm/vmstat.c                   | 2 +-
 mm/zswap.c                    | 4 ++--
 4 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h
index f4569ad98edf..747943bc8cc2 100644
--- a/include/linux/vm_event_item.h
+++ b/include/linux/vm_event_item.h
@@ -142,7 +142,7 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
 #ifdef CONFIG_ZSWAP
 		ZSWPIN,
 		ZSWPOUT,
-		ZSWP_WB,
+		ZSWPWB,
 #endif
 #ifdef CONFIG_X86
 		DIRECT_MAP_LEVEL2_SPLIT,
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 21d79249c8b4..0286b7d38832 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -703,7 +703,7 @@ static const unsigned int memcg_vm_event_stat[] = {
 #if defined(CONFIG_MEMCG_KMEM) && defined(CONFIG_ZSWAP)
 	ZSWPIN,
 	ZSWPOUT,
-	ZSWP_WB,
+	ZSWPWB,
 #endif
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 	THP_FAULT_ALLOC,
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 2249f85e4a87..cfd8d8256f8e 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1401,7 +1401,7 @@ const char * const vmstat_text[] = {
 #ifdef CONFIG_ZSWAP
 	"zswpin",
 	"zswpout",
-	"zswp_wb",
+	"zswpwb",
 #endif
 #ifdef CONFIG_X86
 	"direct_map_level2_splits",
diff --git a/mm/zswap.c b/mm/zswap.c
index c65b8ccc6b72..0fb0945c0031 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -761,9 +761,9 @@ static enum lru_status shrink_memcg_cb(struct list_head *item, struct list_lru_o
 	zswap_written_back_pages++;
 
 	if (entry->objcg)
-		count_objcg_event(entry->objcg, ZSWP_WB);
+		count_objcg_event(entry->objcg, ZSWPWB);
 
-	count_vm_event(ZSWP_WB);
+	count_vm_event(ZSWPWB);
 	/*
 	 * Writeback started successfully, the page now belongs to the
 	 * swapcache. Drop the entry from zswap - unless invalidate already
-- 
2.34.1
