From nobody Sun Jul 13 15:36:00 2025 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4bg8g511mcz616qN; Sun, 13 Jul 2025 15:36:01 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4bg8g43PSFz40Hv; Sun, 13 Jul 2025 15:36:00 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1752420960; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=MjabJL6hnDe/TgMTg0kGsOXXKaYyqiB/kKDMpAEP4PE=; b=fJOx8LuGK38uBNwkM6mM7+tC7IfIzDltP/qWh3MfXRqh6Vb7r2InMsmNBRHAPgJkpMT7C5 koYBZQCkTwNSAh5+qn/1P33/9xeBU1qtFE+otT7Czqnq9JrVTw7OeJwao1Q7FM16WJlE7k Wwl8DQG6wHZax5iqi08UXToAR6CmBpvA0uA19eTFJGYlnk/G9HgUkuO0MnGXHJ+QWrg24W D/vtf22+VBCaXd0v4gmYKN2Jt36RtpP0T8bqjfTW/bhkBrA0Aa+tUODfpS2VjcOWKVQF6v 3+mabOmHuALN9uVOBhuadSdgbi/Gfk2gGx1KWo7CVWa80gRpQk75COE1aOUOGg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1752420960; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=MjabJL6hnDe/TgMTg0kGsOXXKaYyqiB/kKDMpAEP4PE=; b=Caxp/Qx2ipnMSb0FFbexBw7YrlGT+9UIeW++owK92c+sLndftlWtt/58Kqt1trGN18902q kvDspEQJo6P9+40RnKD0SwDbAhn1/SJvD3ZSOcJ3mG4XUPXHSCdRCQN875L7+TWTSp8VgW rVyrgxBEomQRQbCTDbkhkX3FwYhFY1FzRzBXBbRYBoLXfnR/YgKUVnmQO6rYGKs0cU3Y2+ uDtqlbuVBisy3/Pg5803NlY8F3VxHvYrD96hA5ZM7eJOag7cqILNINb6lCJ02TRhUo6KPK CC+ueFKpLOhyz6cSReTTHzST4nrXoK8bfjrXzK/sgqQLo5cz7COGJ61Z5p+3XQ== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1752420960; a=rsa-sha256; cv=none; b=rnwV/KXrzs5KoTzvKx5H/l8UiGmz7TL1Sw4rd26StJ/XUUfyISZpCCAj29I0T9uGzvQz7N GGvRE1HSc/kon+zJKtxY7pruemmLQYJ7+LjsqyqpKK8chInxylvCh/fUoEHgSj94pjbw02 92MNyhlPbx5WsFiyOCK+gIqONiMaIY9LqwclZABmlMvatgsop7Rkow/oK1JAvRBOAiNUor CD5UT2OwiQmgdf6D96BV2yQszyh5Vq0mo3NU2dwAAIByxT+I1r84p6y5A6c364TzBc86bL w/b11kSjdRQrYsc1ZRNBfp31fGSfeUeom+JUKXZx76x+UfD2GkxUOZI+zTNjVg== Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4bg8g42y6PzRl; Sun, 13 Jul 2025 15:36:00 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.18.1/8.18.1) with ESMTP id 56DFa0Ph022741; Sun, 13 Jul 2025 15:36:00 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.18.1/8.18.1/Submit) id 56DFa0lm022738; Sun, 13 Jul 2025 15:36:00 GMT (envelope-from git) Date: Sun, 13 Jul 2025 15:36:00 GMT Message-Id: <202507131536.56DFa0lm022738@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Mateusz Piotrowski <0mp@FreeBSD.org> Subject: git: 10d336114d48 - main - tracing(7): Add hwt(4) List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: 0mp X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 10d336114d488193d06bffa1755bf61f2a027a8f Auto-Submitted: auto-generated The branch main has been updated by 0mp: URL: https://cgit.FreeBSD.org/src/commit/?id=10d336114d488193d06bffa1755bf61f2a027a8f commit 10d336114d488193d06bffa1755bf61f2a027a8f Author: Mateusz Piotrowski <0mp@FreeBSD.org> AuthorDate: 2025-07-12 09:40:27 +0000 Commit: Mateusz Piotrowski <0mp@FreeBSD.org> CommitDate: 2025-07-13 15:32:48 +0000 tracing(7): Add hwt(4) Also, reference tracing(7) from hwt(4). Reviewed by: bnovkov Event: Berlin Hackathon 202507 Differential Revision: https://reviews.freebsd.org/D51276 --- share/man/man4/hwt.4 | 3 ++- share/man/man7/tracing.7 | 4 ++++ 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/share/man/man4/hwt.4 b/share/man/man4/hwt.4 index df02a4672f36..299332c72542 100644 --- a/share/man/man4/hwt.4 +++ b/share/man/man4/hwt.4 @@ -3,7 +3,7 @@ .\" .\" SPDX-License-Identifier: BSD-2-Clause .\" -.Dd July 7, 2025 +.Dd July 12, 2025 .Dt HWT 4 .Os .Sh NAME @@ -131,6 +131,7 @@ For SPE-only, the kernel is waiting for userspace to notify that it has copied out a buffer to avoid data loss/overwriting buffers. .El .Sh SEE ALSO +.Xr tracing 7 , .Xr hwt 8 .Sh HISTORY The diff --git a/share/man/man7/tracing.7 b/share/man/man7/tracing.7 index 4c9aee8ce913..f3e3a5bf98c4 100644 --- a/share/man/man7/tracing.7 +++ b/share/man/man7/tracing.7 @@ -73,6 +73,10 @@ It comes in handy for some niche purposes during kernel development. It lets kernel programmers log events to a global ring buffer, which can later be dumped using .Xr ktrdump 8 . +.Ss Hardware-Accelerated Tracing +.Xr hwt 4 +is a kernel trace framework providing infrastructure +for hardware-assisted tracing. .Ss Hardware Counters .Xr pmcstat 8 , and its kernel counterpart,