From nobody Fri Oct 3 11:26:02 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 6A0562EA49D; Tue, 2 Sep 2025 14:36:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756823781; cv=none; b=h6JolQKmN6tgwDS+vrju0YGKaXjy8M0JKwM/d6iORUwxOUDBB080TyaQzxEuYZFsh/IDiUyh5fHHpM9F8zoOLQAG7cD3vx7+y3MMPC2ZIg+9gu3PqyRZW2nwr5n5uS5gX1kuk7/vB8xZkt+3s9megG6TO1m108fVLY14elH626M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756823781; c=relaxed/simple; bh=4JOoZz3iZN1zacKGCHmVDgQlHUbUlhkai0CbLI11oAo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=iiRbrrDl7yICO/6u0efmcEj0IgiXqg6oSX5cIojivwIk/0bBh7/r2FrfrxlbkNQfAhFFsD9WfAnDgZTZyB0+xZLxv37qjfK3xUdQRk7BnrFfUvqgWr8vK6sHSK+ftIustKhnela1SmY6IatHqCZ5Sacep2DKmrVF1oq3UA/TvjA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=W3S1b54n; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="W3S1b54n" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 86A04C4CEED; Tue, 2 Sep 2025 14:36:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756823780; bh=4JOoZz3iZN1zacKGCHmVDgQlHUbUlhkai0CbLI11oAo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=W3S1b54naU/RQWH8K4HgD4xC3woY8aWCaUWMAuVxoE2wrsza65fyOr9RowvFGZeve d7EyT+8WaxP9uK1d/0whZnWEfzf2fSY8XlBTkhWy1ix5GQIkFjp+SxP+nfDZR6YXuj dEcagW56EIZqb0VsQ4SHqhYI1iUxdp3XcTGS9O4BtIwRLlug1j0Oltr7jRMD1E2CiZ nDrOdeT+pFaE+Rg7MapBCAOHKELq56ZFKh7kLVvE7ZTUAPKxZ0hNmlKx64S0QglWzB mEbqwBw44BuSx4zHtvDhLC6XgEnr6QU6aKpB2SVHyMGwOiq+7kbBz7eGcT37glRzNW jMc4NCbVzI21w== From: Jiri Olsa To: Oleg Nesterov , Masami Hiramatsu , Peter Zijlstra , Andrii Nakryiko Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, x86@kernel.org, Song Liu , Yonghong Song , John Fastabend , Hao Luo , Steven Rostedt , Ingo Molnar Subject: [PATCH perf/core 06/11] libbpf: Add support to attach unique uprobe_multi uprobe Date: Tue, 2 Sep 2025 16:34:59 +0200 Message-ID: <20250902143504.1224726-7-jolsa@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250902143504.1224726-1-jolsa@kernel.org> References: <20250902143504.1224726-1-jolsa@kernel.org> 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 Content-Type: text/plain; charset="utf-8" Adding support to attach unique uprobe multi by adding the 'unique' bool flag to struct bpf_uprobe_multi_opts. Also adding "uprobe.unique[.s]" auto load sections to create uprobe_multi unique uprobe. Signed-off-by: Jiri Olsa --- tools/lib/bpf/libbpf.c | 7 ++++++- tools/lib/bpf/libbpf.h | 4 +++- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 8f5a81b672e1..1f613a5f95b6 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -9525,6 +9525,8 @@ static const struct bpf_sec_def section_defs[] =3D { SEC_DEF("uprobe.multi+", KPROBE, BPF_TRACE_UPROBE_MULTI, SEC_NONE, attach= _uprobe_multi), SEC_DEF("uretprobe.multi+", KPROBE, BPF_TRACE_UPROBE_MULTI, SEC_NONE, att= ach_uprobe_multi), SEC_DEF("uprobe.session+", KPROBE, BPF_TRACE_UPROBE_SESSION, SEC_NONE, at= tach_uprobe_multi), + SEC_DEF("uprobe.unique+", KPROBE, BPF_TRACE_UPROBE_MULTI, SEC_NONE, attac= h_uprobe_multi), + SEC_DEF("uprobe.unique.s+", KPROBE, BPF_TRACE_UPROBE_MULTI, SEC_SLEEPABLE= , attach_uprobe_multi), SEC_DEF("uprobe.multi.s+", KPROBE, BPF_TRACE_UPROBE_MULTI, SEC_SLEEPABLE,= attach_uprobe_multi), SEC_DEF("uretprobe.multi.s+", KPROBE, BPF_TRACE_UPROBE_MULTI, SEC_SLEEPAB= LE, attach_uprobe_multi), SEC_DEF("uprobe.session.s+", KPROBE, BPF_TRACE_UPROBE_SESSION, SEC_SLEEPA= BLE, attach_uprobe_multi), @@ -11880,6 +11882,7 @@ static int attach_uprobe_multi(const struct bpf_pro= gram *prog, long cookie, stru case 3: opts.session =3D str_has_pfx(probe_type, "uprobe.session"); opts.retprobe =3D str_has_pfx(probe_type, "uretprobe.multi"); + opts.unique =3D str_has_pfx(probe_type, "uprobe.unique"); =20 *link =3D bpf_program__attach_uprobe_multi(prog, -1, binary_path, func_n= ame, &opts); ret =3D libbpf_get_error(*link); @@ -12116,10 +12119,10 @@ bpf_program__attach_uprobe_multi(const struct bpf= _program *prog, LIBBPF_OPTS(bpf_link_create_opts, lopts); unsigned long *resolved_offsets =3D NULL; enum bpf_attach_type attach_type; + bool retprobe, session, unique; int err =3D 0, link_fd, prog_fd; struct bpf_link *link =3D NULL; char full_path[PATH_MAX]; - bool retprobe, session; const __u64 *cookies; const char **syms; size_t cnt; @@ -12141,6 +12144,7 @@ bpf_program__attach_uprobe_multi(const struct bpf_p= rogram *prog, cnt =3D OPTS_GET(opts, cnt, 0); retprobe =3D OPTS_GET(opts, retprobe, false); session =3D OPTS_GET(opts, session, false); + unique =3D OPTS_GET(opts, unique, false); =20 /* * User can specify 2 mutually exclusive set of inputs: @@ -12203,6 +12207,7 @@ bpf_program__attach_uprobe_multi(const struct bpf_p= rogram *prog, lopts.uprobe_multi.cookies =3D cookies; lopts.uprobe_multi.cnt =3D cnt; lopts.uprobe_multi.flags =3D retprobe ? BPF_F_UPROBE_MULTI_RETURN : 0; + lopts.uprobe_multi.flags |=3D unique ? BPF_F_UPROBE_MULTI_UNIQUE : 0; =20 if (pid =3D=3D 0) pid =3D getpid(); diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index 455a957cb702..13a10299331b 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -596,10 +596,12 @@ struct bpf_uprobe_multi_opts { bool retprobe; /* create session kprobes */ bool session; + /* create unique uprobe */ + bool unique; size_t :0; }; =20 -#define bpf_uprobe_multi_opts__last_field session +#define bpf_uprobe_multi_opts__last_field unique =20 /** * @brief **bpf_program__attach_uprobe_multi()** attaches a BPF program --=20 2.51.0