From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3C04DC433EF for ; Tue, 11 Jan 2022 17:32:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344989AbiAKRcl (ORCPT ); Tue, 11 Jan 2022 12:32:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42884 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344388AbiAKRbU (ORCPT ); Tue, 11 Jan 2022 12:31:20 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 536E0C061759; Tue, 11 Jan 2022 09:31:19 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id B7747B81C3B; Tue, 11 Jan 2022 17:31:18 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 75B27C36AF3; Tue, 11 Jan 2022 17:31:18 +0000 (UTC) Received: from rostedt by gandalf.local.home with local (Exim 4.95) (envelope-from ) id 1n7KzN-0032HF-LO; Tue, 11 Jan 2022 12:31:17 -0500 Message-ID: <20220111173117.491473727@goodmis.org> User-Agent: quilt/0.66 Date: Tue, 11 Jan 2022 12:30:54 -0500 From: Steven Rostedt To: linux-kernel@vger.kernel.org Cc: Ingo Molnar , Andrew Morton , Tao Zhou , Ingo Molnar , Tom Zanussi , Masami Hiramatsu , Juri Lelli , Clark Williams , John Kacur , Peter Zijlstra , Thomas Gleixner , Sebastian Andrzej Siewior , Daniel Bristot de Oliveira , linux-rt-users@vger.kernel.org, linux-trace-devel@vger.kernel.org, Jonathan Corbet Subject: [for-next][PATCH 23/31] rtla: Add Documentation References: <20220111173030.999527342@goodmis.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Daniel Bristot de Oliveira Adds the basis for rtla documentation. This patch also includes the rtla(1) man page. As suggested by Jonathan Corbet, we are placing these man pages at Documentation/tools/rtla, using rst format. It is not linked to the official documentation, though. The Makefile is based on bpftool's Documentation one. Link: https://lkml.kernel.org/r/66edf7af207dfe69fabae10575f42d73d92f07c4.1638182284.git.bristot@kernel.org Cc: Tao Zhou Cc: Ingo Molnar Cc: Tom Zanussi Cc: Masami Hiramatsu Cc: Juri Lelli Cc: Clark Williams Cc: John Kacur Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Sebastian Andrzej Siewior Cc: Daniel Bristot de Oliveira Cc: linux-rt-users@vger.kernel.org Cc: linux-trace-devel@vger.kernel.org Cc: linux-kernel@vger.kernel.org Suggested-by: Steven Rostedt Suggested-by: Jonathan Corbet Signed-off-by: Daniel Bristot de Oliveira Signed-off-by: Steven Rostedt --- Documentation/tools/rtla/Makefile | 41 +++++++++++++++++ Documentation/tools/rtla/common_appendix.rst | 12 +++++ Documentation/tools/rtla/rtla.rst | 48 ++++++++++++++++++++ tools/tracing/rtla/Makefile | 30 ++++++++++-- 4 files changed, 127 insertions(+), 4 deletions(-) create mode 100644 Documentation/tools/rtla/Makefile create mode 100644 Documentation/tools/rtla/common_appendix.rst create mode 100644 Documentation/tools/rtla/rtla.rst diff --git a/Documentation/tools/rtla/Makefile b/Documentation/tools/rtla/Makefile new file mode 100644 index 000000000000..9f2b84af1a6c --- /dev/null +++ b/Documentation/tools/rtla/Makefile @@ -0,0 +1,41 @@ +# SPDX-License-Identifier: GPL-2.0-only +# Based on bpftool's Documentation Makefile + +INSTALL ?= install +RM ?= rm -f +RMDIR ?= rmdir --ignore-fail-on-non-empty + +PREFIX ?= /usr/share +MANDIR ?= $(PREFIX)/man +MAN1DIR = $(MANDIR)/man1 + +MAN1_RST = $(wildcard rtla*.rst) + +_DOC_MAN1 = $(patsubst %.rst,%.1,$(MAN1_RST)) +DOC_MAN1 = $(addprefix $(OUTPUT),$(_DOC_MAN1)) + +RST2MAN_DEP := $(shell command -v rst2man 2>/dev/null) +RST2MAN_OPTS += --verbose + +$(OUTPUT)%.1: %.rst +ifndef RST2MAN_DEP + $(error "rst2man not found, but required to generate man pages") +endif + rst2man $(RST2MAN_OPTS) $< > $@ + +man1: $(DOC_MAN1) +man: man1 + +clean: + $(RM) $(DOC_MAN1) + +install: man + $(INSTALL) -d -m 755 $(DESTDIR)$(MAN1DIR) + $(INSTALL) -m 644 $(DOC_MAN1) $(DESTDIR)$(MAN1DIR) + +uninstall: + $(RM) $(addprefix $(DESTDIR)$(MAN1DIR)/,$(_DOC_MAN1)) + $(RMDIR) $(DESTDIR)$(MAN1DIR) + +.PHONY: man man1 clean install uninstall +.DEFAULT_GOAL := man diff --git a/Documentation/tools/rtla/common_appendix.rst b/Documentation/tools/rtla/common_appendix.rst new file mode 100644 index 000000000000..b494084acccd --- /dev/null +++ b/Documentation/tools/rtla/common_appendix.rst @@ -0,0 +1,12 @@ +REPORTING BUGS +============== +Report bugs to + +LICENSE +======= +**rtla** is Free Software licensed under the GNU GPLv2 + +COPYING +======= +Copyright \(C) 2021 Red Hat, Inc. Free use of this software is granted under +the terms of the GNU Public License (GPL). diff --git a/Documentation/tools/rtla/rtla.rst b/Documentation/tools/rtla/rtla.rst new file mode 100644 index 000000000000..fc0d233efcd5 --- /dev/null +++ b/Documentation/tools/rtla/rtla.rst @@ -0,0 +1,48 @@ +========= +rtla +========= +-------------------------------- +Real-time Linux Analysis tool +-------------------------------- + +:Manual section: 1 + +SYNOPSIS +======== +**rtla** *COMMAND* [*OPTIONS*] + +DESCRIPTION +=========== +The **rtla** is a meta-tool that includes a set of commands that aims to +analyze the real-time properties of Linux. But instead of testing Linux +as a black box, **rtla** leverages kernel tracing capabilities to provide +precise information about the properties and root causes of unexpected +results. + +COMMANDS +======== +**osnoise** + + Gives information about the operating system noise (osnoise). + +**timerlat** + + Measures the IRQ and thread timer latency. + +OPTIONS +======= +**-h**, **--help** + + Display the help text. + +For other options, see the man page for the corresponding command. + +SEE ALSO +======== +**rtla-osnoise**\(1), **rtla-timerlat**\(1) + +AUTHOR +====== +Daniel Bristot de Oliveira + +.. include:: common_appendix.rst diff --git a/tools/tracing/rtla/Makefile b/tools/tracing/rtla/Makefile index 9631a98976a8..72c002406bff 100644 --- a/tools/tracing/rtla/Makefile +++ b/tools/tracing/rtla/Makefile @@ -45,18 +45,28 @@ DATADIR := /usr/share DOCDIR := $(DATADIR)/doc MANDIR := $(DATADIR)/man LICDIR := $(DATADIR)/licenses +SRCTREE := $(if $(BUILD_SRC),$(BUILD_SRC),$(CURDIR)) + +# If running from the tarball, man pages are stored in the Documentation +# dir. If running from the kernel source, man pages are stored in +# Documentation/tools/rtla/. +ifneq ($(wildcard Documentation/.*),) +DOCSRC = Documentation/ +else +DOCSRC = $(SRCTREE)/../../../Documentation/tools/rtla/ +endif .PHONY: all all: rtla -rtla: $(OBJ) +rtla: $(OBJ) doc $(CC) -o rtla $(LDFLAGS) $(OBJ) $(LIBS) static: $(OBJ) $(CC) -o rtla-static $(LDFLAGS) --static $(OBJ) $(LIBS) -lpthread -ldl .PHONY: install -install: +install: doc_install $(INSTALL) -d -m 755 $(DESTDIR)$(BINDIR) $(INSTALL) rtla -m 755 $(DESTDIR)$(BINDIR) $(STRIP) $(DESTDIR)$(BINDIR)/rtla @@ -66,15 +76,27 @@ install: ln -s $(DESTDIR)$(BINDIR)/rtla $(DESTDIR)$(BINDIR)/timerlat .PHONY: clean tarball -clean: +clean: doc_clean @test ! -f rtla || rm rtla @test ! -f rtla-static || rm rtla-static @test ! -f src/rtla.o || rm src/rtla.o @test ! -f $(TARBALL) || rm -f $(TARBALL) @rm -rf *~ $(OBJ) *.tar.$(CEXT) -tarball: clean +tarball: clean rm -rf $(NAME)-$(VERSION) && mkdir $(NAME)-$(VERSION) cp -r $(DIRS) $(FILES) $(NAME)-$(VERSION) + mkdir $(NAME)-$(VERSION)/Documentation/ + cp -rp $(SRCTREE)/../../../Documentation/tools/rtla/* $(NAME)-$(VERSION)/Documentation/ tar $(TAROPTS) --exclude='*~' $(NAME)-$(VERSION) rm -rf $(NAME)-$(VERSION) + +.PHONY: doc doc_clean doc_install +doc: + $(MAKE) -C $(DOCSRC) + +doc_clean: + $(MAKE) -C $(DOCSRC) clean + +doc_install: + $(MAKE) -C $(DOCSRC) install -- 2.33.0