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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jonathan Corbet , Shuah Khan , Randy Dunlap , Alex Shi , Yanteng Si , Dongliang Mu , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Sven Schnelle , Helen Koike , Vignesh Raman , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, dri-devel@lists.freedesktop.org, Nhat Pham Subject: Re: [PATCH v3] mm/zsmalloc: remove CONFIG_ZSMALLOC_STAT Message-ID: References: <20261111-zsmalloc_stat-v3-1-2d85ed51570e@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261111-zsmalloc_stat-v3-1-2d85ed51570e@gmail.com> X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Info: AW1haW4tMjYxMTEyMDA0OCBTYWx0ZWRfX61PWThN5bLBB QHvsaKAzKaSemekTkz04TfXUL5f11+UWnI8aQzwwM2Nnf8f2b7WkCrqgqP99j3hHQ0OEU+bZSg0 mPsk/wyxJKoRGOu6mxbHXMCSMDREZh4= X-Authority-Analysis: v=2.4 cv=GISdgeNK c=1 sm=1 tr=0 ts=6af5b132 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=kj9zAlcOel0A:10 a=zJRp6_cAMcgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=pGLkceISAAAA:8 a=itkboQNlIvS3CmqEExoA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-GUID: MXa2Sk-_6Sw_bmg7o3uoEatjrHj-1pvN X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTEyMDA0OCBTYWx0ZWRfX6vLbARu7BivS zj1FORlMjbdRdBzJM9SUIYx06lNa0IOX3yDAVN8Qmu1OkDg7x9LTz4aSot0L08MANolZWays6Br KfJax0kAp4eIspAjOU2dHV95hkEP8oUgJf/p3Y/+1H96m0UWu7gHG0igGl50TLiaMF446dFqdHU tWer/PU9hA/4xF5IlzjfwQZnADKOIY1MgZYC9MoIq8ZnC1AKpuL89aXrs/xmOPGcFCn4maGw8pF 59AA0w4KbGhWVDJHkgeCCAuDbqm+IoLUiZGCK8oMWE2rPGwduiiFLfFwDRIMpuwSrpT7hM0eA9x rba29btnR6kpUccVJ4iGr3RYCQSdwT6tvRs9BBTgPV4NUZ+suZ6+EhM3RpDmH/jYo9eT6yeEdQi 17pzmOEjns87LdD3DNKI8MOPulpo/6xzEc9zWbvzUAMnoJ00RwHK/7OkcAgMg501+snBSAlFezd PJdds51219o+oqVUmxw== X-Proofpoint-ORIG-GUID: MqkU3Q4i0ftX4RD9tfhyu81C8hZy5Ha2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-12_01,2026-11-11_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 bulkscore=0 impostorscore=0 clxscore=1011 adultscore=0 priorityscore=1501 phishscore=0 spamscore=0 malwarescore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2611040001 definitions=main-2611120048 On Wed, Nov 11, 2026 at 08:41:26PM +0800, Xueyuan Chen wrote: > CONFIG_ZSMALLOC_STAT only controls the debugfs interface. The class > counters are updated regardless of this option. > > Remove the CONFIG_ZSMALLOC_STAT guards and rely on the debugfs API > stubs when CONFIG_DEBUG_FS=n. Skip statistics setup silently when > debugfs is unavailable. > > Remove the Kconfig entry and replace the existing CONFIG_ZSMALLOC_STAT > settings with CONFIG_DEBUG_FS=y. Update the English and Chinese > documentation to match, and clarify the pool name in the debugfs path. > > Suggested-by: Nhat Pham > Reviewed-by: Nhat Pham > Signed-off-by: Xueyuan Chen ... > arch/s390/configs/debug_defconfig | 2 +- > arch/s390/configs/defconfig | 2 +- ... > 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 So DEBUG_FS is selected unconditionally? Please, drop this for s390. > -- > Best regards, > Xueyuan Thanks!