From nobody Sat Feb 7 10:50:42 2026 Received: from out-174.mta0.migadu.com (out-174.mta0.migadu.com [91.218.175.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EC90D2E7BB4 for ; Tue, 27 Jan 2026 02:45:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769481923; cv=none; b=CHG/QZQ0rJ0j7Ff53dDCW8nf21f0qrhuxD6t9pWV+xvG+GQEgN2WzrRYNo/uirJDvoHiaIvpkQpcW9Jma464eDPp71qm6k6+aPDh4cc0voU0OHsDYkOv/sHfJhjq7QZy65GMujHjIVpecn6od49z0eLA3lEubWHTQbdcU7fprZs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769481923; c=relaxed/simple; bh=VQJBUryOfB+5knfvThumOQ1TrljIAyYVhK3zZ93kKjQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eoG+gxPm6Yy18pGCJ9PX3lukkgTIWMZbcrw/80FCAef76ijE6hM7ag9AT99Oa8Dcd4yBtWnFx9kdyUZQS/NpDfXVKfq/Wgxj1B/HDo9l3wUT8CyW795sqzyOc25QedFkkjMLHipDl9ndTHbU4jWBjCgn5C7hTuOA6buxwevT2Wk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=W4NnxCpR; arc=none smtp.client-ip=91.218.175.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="W4NnxCpR" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1769481920; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=VzpBZDmAb1p4WP9vTC/OiXnbOKBtuGA4TcHKnC3OdoY=; b=W4NnxCpR+zzlLvZAm2ipOemGZT10gSpKlvevrGrARxYlDRfCjKQrMfzBmHj0q3VNQ8I6eq RyhTFtiNlV5tlocFaPiWBYGbgzq3OSGTzjjcZFXXYLRt6vCAR5O0o5/qQ0xha7iYrNVbl/ kQdIRbLHdk8Md7JFLfOgvea/HJN3zWE= From: Roman Gushchin To: bpf@vger.kernel.org Cc: Michal Hocko , Alexei Starovoitov , Matt Bobrowski , Shakeel Butt , JP Kobryn , linux-kernel@vger.kernel.org, linux-mm@kvack.org, Suren Baghdasaryan , Johannes Weiner , Andrew Morton , Roman Gushchin Subject: [PATCH bpf-next v3 15/17] bpf: allow calling bpf_out_of_memory() from a PSI tracepoint Date: Mon, 26 Jan 2026 18:44:18 -0800 Message-ID: <20260127024421.494929-16-roman.gushchin@linux.dev> In-Reply-To: <20260127024421.494929-1-roman.gushchin@linux.dev> References: <20260127024421.494929-1-roman.gushchin@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Allow calling bpf_out_of_memory() from a PSI tracepoint to enable PSI-based OOM killer policies. Signed-off-by: Roman Gushchin --- mm/oom_kill.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 53f9f9674658..276cf8a34449 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -1421,6 +1421,13 @@ BTF_KFUNCS_START(bpf_declare_oom_kfuncs) BTF_ID_FLAGS(func, bpf_out_of_memory, KF_SLEEPABLE) BTF_KFUNCS_END(bpf_declare_oom_kfuncs) =20 +BTF_ID_LIST(bpf_oom_trace_ids) +#ifdef CONFIG_PSI +BTF_ID(typedef, btf_trace_psi_avgs_work) +#else +BTF_ID_UNUSED +#endif + static int bpf_declare_oom_kfunc_filter(const struct bpf_prog *prog, u32 k= func_id) { if (!btf_id_set8_contains(&bpf_declare_oom_kfuncs, kfunc_id)) @@ -1430,7 +1437,8 @@ static int bpf_declare_oom_kfunc_filter(const struct = bpf_prog *prog, u32 kfunc_i prog->aux->attach_btf_id =3D=3D bpf_oom_ops_ids[0]) return -EACCES; =20 - if (prog->type =3D=3D BPF_PROG_TYPE_TRACING) + if (prog->type =3D=3D BPF_PROG_TYPE_TRACING && + prog->aux->attach_btf_id !=3D bpf_oom_trace_ids[0]) return -EACCES; =20 return 0; --=20 2.52.0