From nobody Wed Dec 24 18:00:00 2025 Received: from szxga06-in.huawei.com (szxga06-in.huawei.com [45.249.212.32]) (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 9C558134B4; Thu, 25 Jan 2024 07:39:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.32 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706168363; cv=none; b=Y6Cjqp92kvKvH5uknOVrU2kfrQazKETjo524QBLh+o5c1BC+qX5JexM4JyO2XNW+lawZhCmZMD60Cgev11BRUHc97R938SX2x2muHGNB76c/oyHBg/ow6dQbVrjONqY3EKh/ktNqBD99jF37TOKhlVt+jqNB1qScb7fncp09geo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706168363; c=relaxed/simple; bh=DTWWED3utzA+ZuMoccKiNwpAtso/EWOE5CANqtTsna8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=CvkfkcVdki2uTkx0SizxDeIC9xsIKrvZEzR5ky7ouPDTzzFxxrBsACNoHxo8Nuh6P6oI0Vk48sr1/BAeirL9LEMolTGMJ0N/kQTIcO/v/m6JStP++5rKvyXgiN/KDPjHpgZabns6IiRir6il7iZUNzxPsLl4KLaI8LZ70DRY3GY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.162.112]) by szxga06-in.huawei.com (SkyGuard) with ESMTP id 4TLCPR1NHNz1vsVX; Thu, 25 Jan 2024 15:38:51 +0800 (CST) Received: from canpemm500010.china.huawei.com (unknown [7.192.105.118]) by mail.maildlp.com (Postfix) with ESMTPS id A086E140667; Thu, 25 Jan 2024 15:38:58 +0800 (CST) Received: from huawei.com (10.175.127.227) by canpemm500010.china.huawei.com (7.192.105.118) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Thu, 25 Jan 2024 15:36:51 +0800 From: Ye Bin To: , , , CC: , Subject: [PATCH v5 2/8] tracing/probes: support '%pd' type for print struct dentry's name Date: Thu, 25 Jan 2024 15:39:17 +0800 Message-ID: <20240125073923.2252057-3-yebin10@huawei.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20240125073923.2252057-1-yebin10@huawei.com> References: <20240125073923.2252057-1-yebin10@huawei.com> 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-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To canpemm500010.china.huawei.com (7.192.105.118) Content-Type: text/plain; charset="utf-8" Similar to '%pd' for printk, use '%pd' for print struct dentry's name. Signed-off-by: Ye Bin --- kernel/trace/trace_kprobe.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index c4c6e0e0068b..7cbb43740b4f 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -779,6 +779,7 @@ static int __trace_kprobe_create(int argc, const char *= argv[]) char buf[MAX_EVENT_NAME_LEN]; char gbuf[MAX_EVENT_NAME_LEN]; char abuf[MAX_BTF_ARGS_LEN]; + char *dbuf =3D NULL; struct traceprobe_parse_context ctx =3D { .flags =3D TPARG_FL_KERNEL }; =20 switch (argv[0][0]) { @@ -930,6 +931,10 @@ static int __trace_kprobe_create(int argc, const char = *argv[]) argv =3D new_argv; } =20 + ret =3D traceprobe_expand_dentry_args(argc, argv, &dbuf); + if (ret) + goto out; + /* setup a probe */ tk =3D alloc_trace_kprobe(group, event, addr, symbol, offset, maxactive, argc, is_return); @@ -971,6 +976,7 @@ static int __trace_kprobe_create(int argc, const char *= argv[]) trace_probe_log_clear(); kfree(new_argv); kfree(symbol); + kfree(dbuf); return ret; =20 parse_error: --=20 2.31.1