From d40d48e1f1f25abe755521e33a67f5d2b8b9443c Mon Sep 17 00:00:00 2001 From: Daniel Bristot de Oliveira Date: Fri, 10 Dec 2021 19:11:27 +0100 Subject: [PATCH] rtla: Add Documentation 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/5f510f3e962fc0cd531c43f5a815544dd720c3f2.1639158831.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 7a7348faec32..2d52ff0bff7d 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 -- 2.11.0