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Thu, 15 Jan 2026 10:12:35 -0800 (PST) Received: from [172.16.80.107] ([210.228.119.9]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-81fa1094e23sm61988b3a.4.2026.01.15.10.12.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Jan 2026 10:12:34 -0800 (PST) From: Ryota Sakamoto Date: Fri, 16 Jan 2026 03:12:14 +0900 Subject: [PATCH] cgroup/rstat: fix missing prototype warning for bpf_rstat_flush() Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260116-fix-bpf_rstat_flush-v1-1-b068c230fdff@gmail.com> X-B4-Tracking: v=1; b=H4sIAAAAAAAC/x2MQQqAIBAAvxJ7TmiFLPpKRGituRAVbkUQ/j3pO DAzLwhFJoGueCHSzcL7lgHLAqZgt4UUz5lBV9pUiEZ5fpQ7/BjltOfo10uCMmZC29Stdhohl0e krP3XfkjpA38DRv5lAAAA X-Change-ID: 20260116-fix-bpf_rstat_flush-66c1a7582b21 To: Tejun Heo , Johannes Weiner , =?utf-8?q?Michal_Koutn=C3=BD?= Cc: cgroups@vger.kernel.org, linux-kernel@vger.kernel.org, bpf@vger.kernel.org, Ryota Sakamoto X-Mailer: b4 0.14.2 Add the prototype to cgroup-internal.h to resolve the Sparse warning. The function bpf_rstat_flush() is defined as __weak and global in kernel/cgroup/rstat.c, but lack of prototype in header file causes warning with Sparse (C=1): kernel/cgroup/rstat.c:342:22: warning: symbol 'bpf_rstat_flush' was not declared. Should it be static? Signed-off-by: Ryota Sakamoto --- kernel/cgroup/cgroup-internal.h | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/cgroup/cgroup-internal.h b/kernel/cgroup/cgroup-internal.h index 22051b4f1ccbc0812641e4716b7a5b5f7138bbc9..ecb2b3a2f06ffcc3d747adf666a6134cc54059e1 100644 --- a/kernel/cgroup/cgroup-internal.h +++ b/kernel/cgroup/cgroup-internal.h @@ -277,6 +277,7 @@ int css_rstat_init(struct cgroup_subsys_state *css); void css_rstat_exit(struct cgroup_subsys_state *css); int ss_rstat_init(struct cgroup_subsys *ss); void cgroup_base_stat_cputime_show(struct seq_file *seq); +void bpf_rstat_flush(struct cgroup *cgrp, struct cgroup *parent, int cpu); /* * namespace.c --- base-commit: 944aacb68baf7624ab8d277d0ebf07f025ca137c change-id: 20260116-fix-bpf_rstat_flush-66c1a7582b21 Best regards, -- Ryota Sakamoto