From: Xueyuan Chen <xueyuan.chen21@gmail.com>
To: Minchan Kim <minchan@kernel.org>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
Nhat Pham <nphamcs@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Xueyuan Chen <xueyuan.chen21@gmail.com>
Subject: [PATCH v2 2/3] mm: remove CONFIG_ZSMALLOC_STAT
Date: Mon, 09 Nov 2026 20:59:30 +0800 [thread overview]
Message-ID: <20261109-zsmalloc_stat-v2-2-caee41684aba@gmail.com> (raw)
In-Reply-To: <20261109-zsmalloc_stat-v2-0-caee41684aba@gmail.com>
The statistics interface now uses the debugfs API stubs directly, so
CONFIG_ZSMALLOC_STAT no longer controls any zsmalloc code.
Remove the Kconfig entry. Replace the remaining CONFIG_ZSMALLOC_STAT
settings with CONFIG_DEBUG_FS=y.
Suggested-by: Nhat Pham <nphamcs@gmail.com>
Signed-off-by: Xueyuan Chen <xueyuan.chen21@gmail.com>
---
arch/s390/configs/debug_defconfig | 2 +-
arch/s390/configs/defconfig | 2 +-
drivers/gpu/drm/ci/arm.config | 2 +-
drivers/gpu/drm/ci/arm64.config | 2 +-
drivers/gpu/drm/ci/x86_64.config | 2 +-
mm/Kconfig | 9 ---------
6 files changed, 5 insertions(+), 14 deletions(-)
diff --git a/arch/s390/configs/debug_defconfig b/arch/s390/configs/debug_defconfig
index d44674b63715..83193ef8efb9 100644
--- a/arch/s390/configs/debug_defconfig
+++ b/arch/s390/configs/debug_defconfig
@@ -100,7 +100,7 @@ CONFIG_UNIXWARE_DISKLABEL=y
CONFIG_IOSCHED_BFQ=y
CONFIG_BINFMT_MISC=m
CONFIG_ZSWAP=y
-CONFIG_ZSMALLOC_STAT=y
+CONFIG_DEBUG_FS=y
CONFIG_SLAB_BUCKETS=y
CONFIG_SLUB_STATS=y
# CONFIG_COMPAT_BRK is not set
diff --git a/arch/s390/configs/defconfig b/arch/s390/configs/defconfig
index e00e252d4694..694a309377d5 100644
--- a/arch/s390/configs/defconfig
+++ b/arch/s390/configs/defconfig
@@ -94,7 +94,7 @@ CONFIG_UNIXWARE_DISKLABEL=y
CONFIG_IOSCHED_BFQ=y
CONFIG_BINFMT_MISC=m
CONFIG_ZSWAP=y
-CONFIG_ZSMALLOC_STAT=y
+CONFIG_DEBUG_FS=y
CONFIG_SLAB_BUCKETS=y
# CONFIG_COMPAT_BRK is not set
CONFIG_MEMORY_HOTPLUG=y
diff --git a/drivers/gpu/drm/ci/arm.config b/drivers/gpu/drm/ci/arm.config
index d7c51670da2f..fc0a8a4bfb18 100644
--- a/drivers/gpu/drm/ci/arm.config
+++ b/drivers/gpu/drm/ci/arm.config
@@ -5,7 +5,7 @@ CONFIG_CRYPTO_ZSTD=y
CONFIG_ZRAM_MEMORY_TRACKING=y
CONFIG_ZRAM_WRITEBACK=y
CONFIG_ZRAM=y
-CONFIG_ZSMALLOC_STAT=y
+CONFIG_DEBUG_FS=y
# abootimg with a 'dummy' rootfs fails with root=/dev/nfs
CONFIG_BLK_DEV_INITRD=n
diff --git a/drivers/gpu/drm/ci/arm64.config b/drivers/gpu/drm/ci/arm64.config
index c46125c1f80f..10b01b55a66d 100644
--- a/drivers/gpu/drm/ci/arm64.config
+++ b/drivers/gpu/drm/ci/arm64.config
@@ -5,7 +5,7 @@ CONFIG_CRYPTO_ZSTD=y
CONFIG_ZRAM_MEMORY_TRACKING=y
CONFIG_ZRAM_WRITEBACK=y
CONFIG_ZRAM=y
-CONFIG_ZSMALLOC_STAT=y
+CONFIG_DEBUG_FS=y
# abootimg with a 'dummy' rootfs fails with root=/dev/nfs
CONFIG_BLK_DEV_INITRD=n
diff --git a/drivers/gpu/drm/ci/x86_64.config b/drivers/gpu/drm/ci/x86_64.config
index 7ac98a78691e..8225b806dad8 100644
--- a/drivers/gpu/drm/ci/x86_64.config
+++ b/drivers/gpu/drm/ci/x86_64.config
@@ -5,7 +5,7 @@ CONFIG_CRYPTO_ZSTD=y
CONFIG_ZRAM_MEMORY_TRACKING=y
CONFIG_ZRAM_WRITEBACK=y
CONFIG_ZRAM=y
-CONFIG_ZSMALLOC_STAT=y
+CONFIG_DEBUG_FS=y
CONFIG_PWM=y
CONFIG_PM_DEVFREQ=y
diff --git a/mm/Kconfig b/mm/Kconfig
index afff1b25b543..4a77cda7f1d7 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -130,15 +130,6 @@ menu "Zsmalloc allocator options"
comment "Zsmalloc is a common backend allocator for zswap & zram"
-config ZSMALLOC_STAT
- bool "Export zsmalloc statistics"
- select DEBUG_FS
- help
- This option enables code in the zsmalloc to collect various
- statistics about what's happening in zsmalloc and exports that
- information to userspace via debugfs.
- If unsure, say N.
-
config ZSMALLOC_CHAIN_SIZE
int "Maximum number of physical pages per-zspage"
default 8
--
2.47.3
next prev parent reply other threads:[~2026-11-09 12:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-09 12:59 [PATCH v2 0/3] mm/zsmalloc: " Xueyuan Chen
2026-11-09 12:59 ` [PATCH v2 1/3] " Xueyuan Chen
2026-11-09 12:59 ` Xueyuan Chen [this message]
2026-11-09 12:59 ` [PATCH v2 3/3] docs: zsmalloc: describe statistics with CONFIG_DEBUG_FS Xueyuan Chen
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