From patchwork Fri Oct 18 20:22:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiri Olsa X-Patchwork-Id: 13842328 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 D4A5D2071F3; Fri, 18 Oct 2024 20:22:59 +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=1729282980; cv=none; b=NxzfKAWdoSuQ2nKAyLRvvS2PKFDZmhICsWs9/1vDTsmL2r9B8YToLjN//qA9Aw/OIjqhzjHvSlzqN6kY7OyBjIKvP9bXojBmS5XFyAio1v+bIbdBdQvKaMN6T6AYztG22G8nA41LCi1xgY/jK+kUUb9LuRGfFOCDXlu2DjNOgeI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729282980; c=relaxed/simple; bh=O1f98Xv4QRZMli1lDouWqvDmZ/hsStC23qtkN+HEouc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=DBDCyxN7aZqErQcLw6vgzBgd2XofnLgW6v7TQjxQAkXXzLWvebrmtfcefOAmLlKj1/Mdrd33TgVRIfh6oGnnt/78eInYDTR85urnHVcJDj4RuHgHoxh0kH9DFb/yusbeplBpokd3ub83QTD+O94/7kPkceyrXLx59Ln7hWh8Mno= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WA4QaQe3; 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="WA4QaQe3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BCB32C4CEC5; Fri, 18 Oct 2024 20:22:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729282979; bh=O1f98Xv4QRZMli1lDouWqvDmZ/hsStC23qtkN+HEouc=; h=From:To:Cc:Subject:Date:From; b=WA4QaQe3zLxPcOUGWRAmUPKZMXZJaPUPuCchzH2VC3gEU1sQ9I8sVwkSZ/403cgEh msMABIPql6VEhAvFNlhQyt958wyW2/geA3AjVQ0Feqn7TK7aTgTQkebPBz4QUVksIq pgOQ5vhCa6reKxpxoW9jbqtdoV35q37nq010cs42sqz4ANKRh/MjkahwpHsK7zqi6+ bc2/fTu6oyRggU137BjRxHU5xEVAfisXAIj5cBefntavNPHPLvVRfTj1IS7V6pUuA0 qmbimNFyKpEKdb0Sdj9Sc29zvXRiRVLuD8+abv+pHr3Y3oxqLwL2ysFwDZI2zSC2dE UUwNjKdnJOsLQ== From: Jiri Olsa To: Oleg Nesterov , Peter Zijlstra , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko Cc: bpf@vger.kernel.org, Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Steven Rostedt , Masami Hiramatsu , linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org Subject: [PATCHv8 perf/core 0/2] uprobe: Add session support Date: Fri, 18 Oct 2024 22:22:50 +0200 Message-ID: <20241018202252.693462-1-jolsa@kernel.org> X-Mailer: git-send-email 2.46.2 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 hi, this patchset is adding support for session uprobe attachment and using it through bpf link for bpf programs. The session means that the uprobe consumer is executed on entry and return of probed function with additional control: - entry callback can control execution of the return callback - entry and return callbacks can share data/cookie On more details please see patch #2. The patchset is based on Peter's perf/core [1]. v8 changes: - split and sepatate only the perf/core patches - rebased and reposted to proper ppl/lists thanks, jirka [1] git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git perf/core --- Jiri Olsa (2): uprobe: Add data pointer to consumer handlers uprobe: Add support for session consumer include/linux/uprobes.h | 25 +++++++++++++++-- kernel/events/uprobes.c | 148 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++------------------- kernel/trace/bpf_trace.c | 6 ++-- kernel/trace/trace_uprobe.c | 12 +++++--- tools/testing/selftests/bpf/bpf_testmod/bpf_testmod.c | 2 +- 5 files changed, 154 insertions(+), 39 deletions(-)