From patchwork Fri Feb 21 16:33:33 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tao Chen X-Patchwork-Id: 13985951 X-Patchwork-Delegate: bpf@iogearbox.net Received: from out-187.mta0.migadu.com (out-187.mta0.migadu.com [91.218.175.187]) (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 3CE0D204F80 for ; Fri, 21 Feb 2025 16:36:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.187 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740155776; cv=none; b=dTwxOr3hwhxhr8TWAXhncmq625SMohAtfCBJdWruBtxzbWAv7LYYm+MI1sBk+Amt/Ymsvw14yTbOWf8Sv8ytISR+kjnrG3BMyzsif5HCJShdBwda5+W6H1WSaZ/+Ll+D0VI4ZhR/oaiYWU1dgNljJ+qromb6+O0/w/otI1M9jtQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1740155776; c=relaxed/simple; bh=aG8o/kahVF1tm5V+3pDDlV1oJXm/dksJNGytP15/dhA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=RHqt3CNlZOA8tJ6iODMMcR1TmZ8ky1GqU0A4B/8Up6M0OJiFhjbix/XHfvozxwkgkBxXmq2wwrICYTrAY6Kj2sob3cqn9kzOpU8q1edHWE3tlVrzSGlZo5GBVxg+azf/rU9F11jEb9noCFjCuXj5s3iSWnGjDj6/2h+fUAyntZI= 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=lBHMiiM0; arc=none smtp.client-ip=91.218.175.187 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="lBHMiiM0" 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=1740155773; 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=7PGzrKBqkUWVbwyFTBIov9XC7SmgDrzD5PuL2n2Yx4M=; b=lBHMiiM0jqYTuuYKSlMsV398//EFh4ZUOseuAj9KLMk11Ij/mApLJlc401rmWFzWJW++W3 BHd0mdHqQE8BN3hE9mKX7bcnKvpUGZxKjnbEPSM+pS8xPM/Ns9OyO42qdXVz9Ig+g+ZL+z e3Wl/YRd9PgVQRa45IV63VECNRWeZ5g= From: Tao Chen To: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, eddyz87@gmail.com, haoluo@google.com, jolsa@kernel.org, qmo@kernel.org Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org, chen.dylane@gmail.com, Tao Chen , Tao Chen Subject: [PATCH bpf-next v8 2/4] libbpf: Init fd_array when prog probe load Date: Sat, 22 Feb 2025 00:33:33 +0800 Message-Id: <20250221163335.262143-3-chen.dylane@linux.dev> In-Reply-To: <20250221163335.262143-1-chen.dylane@linux.dev> References: <20250221163335.262143-1-chen.dylane@linux.dev> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Migadu-Flow: FLOW_OUT X-Patchwork-Delegate: bpf@iogearbox.net fd_array used to store module btf fd, which will be used for kfunc probe in module btf. Cc: Tao Chen Reviewed-by: Jiri Olsa Reviewed-by: Eduard Zingerman Signed-off-by: Tao Chen --- tools/lib/bpf/libbpf_probes.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/tools/lib/bpf/libbpf_probes.c b/tools/lib/bpf/libbpf_probes.c index a48a557314f6..de2b1205b436 100644 --- a/tools/lib/bpf/libbpf_probes.c +++ b/tools/lib/bpf/libbpf_probes.c @@ -102,12 +102,13 @@ __u32 get_kernel_version(void) static int probe_prog_load(enum bpf_prog_type prog_type, const struct bpf_insn *insns, size_t insns_cnt, - char *log_buf, size_t log_buf_sz) + int *fd_array, char *log_buf, size_t log_buf_sz) { LIBBPF_OPTS(bpf_prog_load_opts, opts, .log_buf = log_buf, .log_size = log_buf_sz, .log_level = log_buf ? 1 : 0, + .fd_array = fd_array, ); int fd, err, exp_err = 0; const char *exp_msg = NULL; @@ -214,7 +215,7 @@ int libbpf_probe_bpf_prog_type(enum bpf_prog_type prog_type, const void *opts) if (opts) return libbpf_err(-EINVAL); - ret = probe_prog_load(prog_type, insns, insn_cnt, NULL, 0); + ret = probe_prog_load(prog_type, insns, insn_cnt, NULL, NULL, 0); return libbpf_err(ret); } @@ -448,7 +449,7 @@ int libbpf_probe_bpf_helper(enum bpf_prog_type prog_type, enum bpf_func_id helpe return libbpf_err(-EOPNOTSUPP); buf[0] = '\0'; - ret = probe_prog_load(prog_type, insns, insn_cnt, buf, sizeof(buf)); + ret = probe_prog_load(prog_type, insns, insn_cnt, NULL, buf, sizeof(buf)); if (ret < 0) return libbpf_err(ret);