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2022-02-15docs/zh_CN: Add sched-energy Chinese translationTang Yizhou
Translate scheduler/sched-energy.rst into Chinese. Signed-off-by: Tang Yizhou <tangyizhou@huawei.com> Reviewed-by: Alex Shi <alexs@kernel.org> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Link: https://lore.kernel.org/r/20220208020105.14117-1-tangyizhou@huawei.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-02-15docs/zh_CN: Add energy-model Chinese translationTang Yizhou
Translate power/energy-model.rst into Chinese. Signed-off-by: Tang Yizhou <tangyizhou@huawei.com> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/20220208133716.24070-1-tangyizhou@huawei.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-02-15Documentation: Fix links for udftools project and pktcdvd toolPali Rohár
Signed-off-by: Pali Rohár <pali@kernel.org> Link: https://lore.kernel.org/r/20220210192200.30828-1-pali@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-02-15Documentation: dev-tools: clarify KTAP specification wordingFrank Rowand
Add the spec version to the title line. Explain likely source of "Unknown lines". "Unknown lines" in nested tests are optionally indented. Add "Unknown lines" items to differences between TAP & KTAP list Convert "Major differences between TAP and KTAP" from a bullet list to a table. The bullet list was being formatted as a single paragraph. Reviewed-by: Tim Bird <Tim.Bird@sony.com> Reviewed-by: David Gow <davidgow@google.com> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Frank Rowand <frank.rowand@sony.com> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Link: https://lore.kernel.org/r/20220210233630.3304495-1-frowand.list@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-02-14docs: Makefile: Add -no-shell-escape option to LATEXOPTSAkira Yokosawa
It turns out that LaTeX enables \write18, which allows (some) shell commands to be executed from the document source, by default. This the often-seen warning during a pdfdocs build: restricted \write18 enabled That is a potential security problem and is entirely unnecessary; nothing in the kernel PDF docs build needs that capability. So disable \write18 explicitly. Signed-off-by: Akira Yokosawa <akiyks@gmail.com> Link: https://lore.kernel.org/r/519bd2d9-1bee-03e1-eeb4-d9883c18be0c@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-02-09Merge branch 'pdf-conversion' into docs-nextJonathan Corbet
PDF-generation improvements from Akira Yokasawa; Akira says: This patch set improves conversions of DOT -> PDF and SVG -> PDF for PDF docs. * DOT -> PDF conversion Current scheme uses "dot -Tpdf" (of graphviz). Cons: - openSUSE's dot(1) does not support -Tpdf. - Other distro's dot(1) generates PDFs with unnecessarily wide margins for inclusion into LaTeX docs. Patch 1/4 changes the route to the following two steps: 1. DOT -> SVG by "dot -Tsvg" 2. SVG -> PDF by "rsvg-convert -f pdf" with fallback to convert(1) Pros: - Improved portability across distros - Less space around graphs in final PDF documents Con: - On systems without rsvg-convert, generated PDF will be of raster image. Patch 2/4 avoids raster-image PDF by using "dot -Tpdf" on systems where the option is available. * SVG -> PDF conversion Current scheme uses convert(1) (of ImageMagick) Cons: - Generated PDFs are of raster image. Some of them look blurry. - Raster images tend to be large in size. - convert(1) delegates SVG decoding to rsvg-convert(1). It doesn't cover full range of Inkscape-specific SVG features and fails to convert some of SVG figures properly. Improper conversions are observed with SVGs listed below (incomplete, conversion quality depends on the version of rsvg-convert): - Documentation/userspace-api/media/v4l/selection.svg - Documentation/userspace-api/media/v4l/vbi_525.svg - Documentation/userspace-api/media/v4l/vbi_625.svg - Documentation/userspace-api/media/v4l/vbi_hsync.svg - Documentation/admin-guide/blockdev/drbd/DRBD-8.3-data-packets.svg - Documentation/admin-guide/blockdev/drbd/DRBD-data-packages.svg If you have Inkscape installed as well, convert(1) delegates SVG decoding to inkscape(1) rather than to rsvg-convert(1) and SVGs listed above can be rendered properly. So if Inkscape is required for converting those SVGs properly, why not use it directly in the first place? Patches 3/4 and 4/4 add code to utilize inkscape(1) for SVG -> PDF conversion when it is available. They don't modify any existing requirements for kernel-doc. Patch 3/4 adds the alternative route of SVG -> PDF conversion by inkscape(1). Patch 4/4 delegates warning messages from inkscape(1) to kernellog.verbose as they are likely harmless in command-line uses. Pros: - Generated PDFs are of vector graphics. - Vector graphics tends to be smaller in size and looks nicer when zoomed in. - SVGs drawn by Inkscape are fully supported. On systems without Inkscape, no regression is expected by these two patches.
2022-02-09docs: sphinx/kfigure.py: Delegate inkscape msg to kernellog.verboseAkira Yokosawa
Depending on its version, distro config, and system-setup type, inkscape(1) emits various warning messages which are harmless in command-line uses. List of such warning messages (incomplete, long ones wrapped): - Gtk-Message: hh:mm:ss.nnn: Failed to load module "canberra-gtk-module" - Unable to init server: Could not connect: Connection refused - Failed to get connection - ** (inkscape:xxx): CRITICAL **: hh:mm:ss.nnn: dbus_g_proxy_new_for_name: assertion 'connection != NULL' failed - ** (inkscape:xxx): CRITICAL **: hh:mm:ss.nnn: dbus_g_proxy_call: assertion 'DBUS_IS_G_PROXY (proxy)' failed - ** (inkscape:xxx): CRITICAL **: hh:mm:ss.nnn: dbus_g_connection_register_g_object: assertion 'connection != NULL' failed - ** (inkscape:xxx): WARNING **: hh:mm:ss.nnn: Fonts dir '/usr/share/inkscape/fonts' does not exist and will be ignored. To avoid unnecessary anxiety, capture the message and output it via kernellog.verbose or kernellog.warn depending on the exit code. Signed-off-by: Akira Yokosawa <akiyks@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/e26a7b53-9155-8394-4a31-6006379b65a5@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-02-09docs: sphinx/kfigure.py: Use inkscape(1) for SVG -> PDF conversionAkira Yokosawa
Using convert(1) of ImageMagick for SVG -> PDF conversion results in PDFs containing raster (bitmap) images which sometimes look blurry. Ideally speaking, SVG to PDF conversion should retain vector graphics in SVG. rsvg-convert(1) can do such conversions with regard to SVG files generated by dot(1). Unfortunately, rsvg-convert(1) does not cover some of SVG features specific to Inkscape. inkscape(1) of Inkscape naturally covers such SVG features. So add a route in svg2pdf() so that inkscape(1) is used when it is available. Note: After this change, if you have Inkscape installed, ImageMagick nor librsvg are not required. Signed-off-by: Akira Yokosawa <akiyks@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Link: https://lore.kernel.org/r/3eea2a8d-c52d-ee07-cf7b-83784c6f6e4b@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-02-09docs: sphinx/kfigure.py: Add check of 'dot -Tpdf'Akira Yokosawa
To prevent any regression on existing build systems, limit the fallback of converting DOT -> raster PDF only when both of the following conditions are met. o dot(1) doesn't support -Tpdf o rsvg-convert(1) is not found While we are here, add kernellog.verbose messages related to rsvg-convert, 'dot -Tpdf', and 'dot -Tsvg' commands. Suggested-by: Mauro Carvalho Chehab <mchehab@kernel.org> Signed-off-by: Akira Yokosawa <akiyks@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/e76f61e1-7366-ba00-b119-8ea6a2499861@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-02-09docs: sphinx/kfigure.py: Use rsvg-convert(1) for DOT -> PDF conversionAkira Yokosawa
On openSUSE, dot(1) command does not support direct PDF output. On other distros, generated PDF images have unnecessarily wide margins, especially for small graphs. By using dot(1) for DOT -> SVG, then rsvg-convert(1) for SVG -> PDF, more optimal PDF images can be obtained, with the bonus of improved portability across various distros. Add rules in kfigure.py so that the above mentioned route is taken when rsvg-convert(1) is available. Note that rsvg-convert(1) is recommended by sphinx_pre_install. So it is most likely that existing systems for building pdfdocs have rsvg-convert(1) installed. Note: SVG features supported by rsvg-convert(1) vary depending on its version and distro config. For example, the one found on Ubuntu Bionic (version 2.40.20) does poor job in rendering some of SVG files drawn by Inkscape. SVG files generated by dot(1) are converted nicely even with such old versions of rsvg-convert. So this change does not affect the quality of such figures in any way. Signed-off-by: Akira Yokosawa <akiyks@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Link: https://lore.kernel.org/r/15b56dd3-081a-2469-c3a4-dfc1ca4c6c2d@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-02-01docs: scheduler: Fix outdated parameter of rebalance_domainsTang Yizhou
According to the function prototype of rebalance_domains(), its first parameter is *rq* and the document need to be updated. Signed-off-by: Tang Yizhou <tangyizhou@huawei.com> Link: https://lore.kernel.org/r/20211221031818.23186-1-tangyizhou@huawei.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-02-01docs/zh_CN: Add rbtree Chinese translationTang Yizhou
Translate core-api/rbtree.rst into Chinese. Signed-off-by: Tang Yizhou <tangyizhou@huawei.com> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/20211225015146.1535-1-tangyizhou@huawei.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs: process: submitting-patches: Clarify the Reported-by usageAndy Shevchenko
It's unclear from "Submitting Patches" documentation that Reported-by is not supposed to be used against new features. (It's more clear in the section 5.4 "Patch formatting and changelogs" of the "A guide to the Kernel Development Process", where it suggests that change should fix something existing in the kernel. Clarify the Reported-by usage in the "Submitting Patches". Reported-by: Florian Eckert <fe@dev.tdt.de> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20220127163258.48482-1-andriy.shevchenko@linux.intel.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs/zh_CN: add highmem translationYanteng Si
Translate .../vm/highmem.rst into Chenese. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/51e088d1e8659b9411534a5a3ad03d88c79a5297.1643246827.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs/zh_CN: add free_page_reporting translationYanteng Si
Translate .../vm/free_page_reporting.rst into Chinese. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/4ef77c1be8319fc45b18e9f4c41986095d794562.1643246827.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs/zh_CN: add damon api translationYanteng Si
Translate .../vm/damon/api.rst into Chinese. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/3d81dbc79e0f982edd68fb9dfee6f0ccb47f7710.1642230669.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs/zh_CN: add damon design translationYanteng Si
Translate .../vm/damon/design.rst into Chinese. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/2685ed7d446620b260c20158685728c3adb5e0fe.1642230669.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs/zh_CN: add damon faq translationYanteng Si
Translate .../vm/damon/faq.rst into Chinese. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/30507f807a835360f57bb9498c37f4c3644b33b7.1642230669.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs/zh_CN: add damon index tronslationYanteng Si
1) Translate .../vm/damon/index.rst into Chinese. 2) add damon into .../zh_CN/vm/index.rst Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/8e8c7651785f1ce20766bc1b3a4fc44faedb84bb.1642230669.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs/zh_CN: Update zh_CN/accounting/delay-accounting.rstwangyong
Update zh_CN/accounting/delay-accounting.rst. The document modification has been merged which refers to the following link: https://lore.kernel.org/all/1639583021-92977-1-git-send-email-wang.yong12@zte.com.cn/ Signed-off-by: wangyong <wang.yong12@zte.com.cn> Reviewed-by: Yang Yang <yang.yang29@zte.com.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/1642003482-48935-1-git-send-email-wang.yong12@zte.com.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs/zh_CN: add balance translationYanteng Si
Translate .../vm/balance.rst into Chinese. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Reviewed-by: Tang Yizhou <tangyizhou@huawei.com> Link: https://lore.kernel.org/r/f1e5a6bcbee3e34fe65a56ee185d9b44daf01cab.1641866889.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs_zh_CN: add active_mm translationYanteng Si
Translatr .../vm/active_mm.rst into Chinese. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Alex Shi <alexs@kernel.org> Reviewed-by: Tang Yizhou <tangyizhou@huawei.com> Link: https://lore.kernel.org/r/99ba014bdd9550bad57db6c21653cb7314d7c2d8.1641866889.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs/zh_CN: add vm/index translationYanteng Si
Translate ../vm/index.rst into Chinese. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Reviewed-by: Tang Yizhou <tangyizhou@huawei.com> Reviewed-by: Alex Shi <alexs@kernel.org> Link: https://lore.kernel.org/r/60c579b34792c4c76194c4843a695263a982b37d.1641866889.git.siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27Documentation: core-api: entry: Add comments about nestingNicolas Saenz Julienne
The topic of nesting and reentrancy in the context of early entry code hasn't been addressed so far. So do it. Signed-off-by: Nicolas Saenz Julienne <nsaenzju@redhat.com> Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Reviewed-by: Paul E. McKenney <paulmck@kernel.org> Link: https://lore.kernel.org/r/20220110105044.94423-2-nsaenzju@redhat.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27Documentation: Fill the gaps about entry/noinstr constraintsThomas Gleixner
The entry/exit handling for exceptions, interrupts, syscalls and KVM is not really documented except for some comments. Fill the gaps. Signed-off-by: Thomas Gleixner <tglx@linutronix.de Co-developed-by: Nicolas Saenz Julienne <nsaenzju@redhat.com> Signed-off-by: Nicolas Saenz Julienne <nsaenzju@redhat.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Paul E. McKenney <paulmck@kernel.org> ---- Changes since v3: - s/nointr/noinstr/ Changes since v2: - No big content changes, just style corrections, so it should be pretty clean at this stage. In the light of this, I kept Mark's Reviewed-by. - Paul's style and paragraph re-writes - Randy's style comments - Add links to transition type sections Documentation/core-api/entry.rst | 261 +++++++++++++++++++++++++++++++ Documentation/core-api/index.rst | 8 + 2 files changed, 269 insertions(+) create mode 100644 Documentation/core-api/entry.rst Reviewed-by: Frederic Weisbecker <frederic@kernel.org> Link: https://lore.kernel.org/r/20220110105044.94423-1-nsaenzju@redhat.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs/zh_CN: Add opp Chinese translationTang Yizhou
Translate power/opp.rst into Chinese. Signed-off-by: Tang Yizhou <tangyizhou@huawei.com> Reviewed-by: Alex Shi <alexs@kernel.org> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Link: https://lore.kernel.org/r/20211229024212.32752-4-tangyizhou@huawei.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs/zh_CN: Add power/index Chinese translationTang Yizhou
Translate power/index.rst into Chinese. Signed-off-by: Tang Yizhou <tangyizhou@huawei.com> Reviewed-by: Alex Shi <alexs@kernel.org> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Link: https://lore.kernel.org/r/20211229024212.32752-3-tangyizhou@huawei.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs/zh_CN: Cleanup index.rstTang Yizhou
Many */index in the Chinese index.rst are not in the same order as the English version. Put them to where they should be. Signed-off-by: Tang Yizhou <tangyizhou@huawei.com> Reviewed-by: Yanteng Si <siyanteng@loongson.cn> Link: https://lore.kernel.org/r/20211229024212.32752-2-tangyizhou@huawei.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs/vm: Fix typo in *harden*Paul Menzel
Fixes: df4e817b7108 ("mm: page table check") Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de> Link: https://lore.kernel.org/r/20220117111338.115455-1-pmenzel@molgen.mpg.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27Documentation: arm: marvell: Extend Avanta listPali Rohár
Include another two SoCs from Avanta family. Signed-off-by: Pali Rohár <pali@kernel.org> Link: https://lore.kernel.org/r/20220121115804.28824-1-pali@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs: fix typo in Documentation/kernel-hacking/locking.rstTakahiro Itazuri
Change copy_from_user*( to copy_from_user() . Signed-off-by: Takahiro Itazuri <itazur@amazon.com> Link: https://lore.kernel.org/r/20220124081447.34066-1-itazur@amazon.com Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-27docs: Hook the RTLA documents into the kernel docs buildJonathan Corbet
The RTLA documents were added to Documentation/ but never hooked into the rest of the docs build, leading to a bunch of warnings like: Documentation/tools/rtla/rtla-osnoise.rst: WARNING: document isn't included in any toctree Add some basic glue to wire these documents into the build so that they are available with the rest of the rendered docs. No attempt has been made to turn the RTLA docs into proper RST files rather than warmed-over man pages; that is an exercise for the future. Fixes: d40d48e1f1f2 ("rtla: Add Documentation") Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org> Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org> Link: https://lore.kernel.org/r/877dau555q.fsf@meer.lwn.net Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2022-01-23Linux 5.17-rc1v5.17-rc1Linus Torvalds
2022-01-23Merge tag 'perf-tools-for-v5.17-2022-01-22' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull more perf tools updates from Arnaldo Carvalho de Melo: - Fix printing 'phys_addr' in 'perf script'. - Fix failure to add events with 'perf probe' in ppc64 due to not removing leading dot (ppc64 ABIv1). - Fix cpu_map__item() python binding building. - Support event alias in form foo-bar-baz, add pmu-events and parse-event tests for it. - No need to setup affinities when starting a workload or attaching to a pid. - Use path__join() to compose a path instead of ad-hoc snprintf() equivalent. - Override attr->sample_period for non-libpfm4 events. - Use libperf cpumap APIs instead of accessing the internal state directly. - Sync x86 arch prctl headers and files changed by the new set_mempolicy_home_node syscall with the kernel sources. - Remove duplicate include in cpumap.h. - Remove redundant err variable. * tag 'perf-tools-for-v5.17-2022-01-22' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf tools: Remove redundant err variable perf test: Add parse-events test for aliases with hyphens perf test: Add pmu-events test for aliases with hyphens perf parse-events: Support event alias in form foo-bar-baz perf evsel: Override attr->sample_period for non-libpfm4 events perf cpumap: Remove duplicate include in cpumap.h perf cpumap: Migrate to libperf cpumap api perf python: Fix cpu_map__item() building perf script: Fix printing 'phys_addr' failure issue tools headers UAPI: Sync files changed by new set_mempolicy_home_node syscall tools headers UAPI: Sync x86 arch prctl headers with the kernel sources perf machine: Use path__join() to compose a path instead of snprintf(dir, '/', filename) perf evlist: No need to setup affinities when disabling events for pid targets perf evlist: No need to setup affinities when enabling events for pid targets perf stat: No need to setup affinities when starting a workload perf affinity: Allow passing a NULL arg to affinity__cleanup() perf probe: Fix ppc64 'perf probe add events failed' case
2022-01-23Merge tag 'trace-v5.17-3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull ftrace fix from Steven Rostedt: "Fix s390 breakage from sorting mcount tables. The latest merge of the tracing tree sorts the mcount table at build time. But s390 appears to do things differently (like always) and replaces the sorted table back to the original unsorted one. As the ftrace algorithm depends on it being sorted, bad things happen when it is not, and s390 experienced those bad things. Add a new config to tell the boot if the mcount table is sorted or not, and allow s390 to opt out of it" * tag 'trace-v5.17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftrace: Fix assuming build time sort works for s390
2022-01-23ftrace: Fix assuming build time sort works for s390Steven Rostedt (Google)
To speed up the boot process, as mcount_loc needs to be sorted for ftrace to work properly, sorting it at build time is more efficient than boot up and can save milliseconds of time. Unfortunately, this change broke s390 as it will modify the mcount_loc location after the sorting takes place and will put back the unsorted locations. Since the sorting is skipped at boot up if it is believed that it was sorted at run time, ftrace can crash as its algorithms are dependent on the list being sorted. Add a new config BUILDTIME_MCOUNT_SORT that is set when BUILDTIME_TABLE_SORT but not if S390 is set. Use this config to determine if sorting should take place at boot up. Link: https://lore.kernel.org/all/yt9dee51ctfn.fsf@linux.ibm.com/ Fixes: 72b3942a173c ("scripts: ftrace - move the sort-processing in ftrace_init") Reported-by: Sven Schnelle <svens@linux.ibm.com> Tested-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-01-23Merge tag 'kbuild-fixes-v5.17' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Bring include/uapi/linux/nfc.h into the UAPI compile-test coverage - Revert the workaround of CONFIG_CC_IMPLICIT_FALLTHROUGH - Fix build errors in certs/Makefile * tag 'kbuild-fixes-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: certs: Fix build error when CONFIG_MODULE_SIG_KEY is empty certs: Fix build error when CONFIG_MODULE_SIG_KEY is PKCS#11 URI Revert "Makefile: Do not quote value for CONFIG_CC_IMPLICIT_FALLTHROUGH" usr/include/Makefile: add linux/nfc.h to the compile-test coverage
2022-01-23Merge tag 'bitmap-5.17-rc1' of git://github.com/norov/linuxLinus Torvalds
Pull bitmap updates from Yury Norov: - introduce for_each_set_bitrange() - use find_first_*_bit() instead of find_next_*_bit() where possible - unify for_each_bit() macros * tag 'bitmap-5.17-rc1' of git://github.com/norov/linux: vsprintf: rework bitmap_list_string lib: bitmap: add performance test for bitmap_print_to_pagebuf bitmap: unify find_bit operations mm/percpu: micro-optimize pcpu_is_populated() Replace for_each_*_bit_from() with for_each_*_bit() where appropriate find: micro-optimize for_each_{set,clear}_bit() include/linux: move for_each_bit() macros from bitops.h to find.h cpumask: replace cpumask_next_* with cpumask_first_* where appropriate tools: sync tools/bitmap with mother linux all: replace find_next{,_zero}_bit with find_first{,_zero}_bit where appropriate cpumask: use find_first_and_bit() lib: add find_first_and_bit() arch: remove GENERIC_FIND_FIRST_BIT entirely include: move find.h from asm_generic to linux bitops: move find_bit_*_le functions from le.h to find.h bitops: protect find_first_{,zero}_bit properly
2022-01-22perf tools: Remove redundant err variableMinghao Chi
Return value from perf_event__process_tracing_data() directly instead of taking this in another redundant variable. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20220112080109.666800-1-chi.minghao@zte.com.cn Signed-off-by: CGEL ZTE <cgel.zte@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-01-22perf test: Add parse-events test for aliases with hyphensJohn Garry
Add a test which allows us to test parsing an event alias with hyphens. Since these events typically do not exist on most host systems, add the alias to the fake pmu. Function perf_pmu__test_parse_init() has terms added to match known test aliases. Signed-off-by: John Garry <john.garry@huawei.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Qi Liu <liuqi115@huawei.com> Cc: Shaokun Zhang <zhangshaokun@hisilicon.com> Cc: linuxarm@huawei.com Link: https://lore.kernel.org/r/1642432215-234089-4-git-send-email-john.garry@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-01-22perf test: Add pmu-events test for aliases with hyphensJohn Garry
Add a test for aliases with hyphens in the name to ensure that the pmu-events tables are as expects. There should be no reason why these sort of aliases would be treated differently, but no harm in checking. Signed-off-by: John Garry <john.garry@huawei.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Qi Liu <liuqi115@huawei.com> Cc: Shaokun Zhang <zhangshaokun@hisilicon.com> Cc: linuxarm@huawei.com Link: https://lore.kernel.org/r/1642432215-234089-3-git-send-email-john.garry@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-01-22perf parse-events: Support event alias in form foo-bar-bazJohn Garry
Event aliasing for events whose name in the form foo-bar-baz is not supported, while foo-bar, foo_bar_baz, and other combinations are, i.e. two hyphens are not supported. The HiSilicon D06 platform has events in such form: $ ./perf list sdir-home-migrate List of pre-defined events (to be used in -e): uncore hha: sdir-home-migrate [Unit: hisi_sccl,hha] $ sudo ./perf stat -e sdir-home-migrate event syntax error: 'sdir-home-migrate' \___ parser error Run 'perf list' for a list of valid events Usage: perf stat [<options>] [<command>] -e, --event <event>event selector. use 'perf list' to list available events To support, add an extra PMU event symbol type for "baz", and add a new rule in the bison file. Signed-off-by: John Garry <john.garry@huawei.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Qi Liu <liuqi115@huawei.com> Cc: Shaokun Zhang <zhangshaokun@hisilicon.com> Cc: linuxarm@huawei.com Link: https://lore.kernel.org/r/1642432215-234089-2-git-send-email-john.garry@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-01-22perf evsel: Override attr->sample_period for non-libpfm4 eventsGerman Gomez
A previous patch preventing "attr->sample_period" values from being overridden in pfm events changed a related behaviour in arm-spe. Before said patch: perf record -c 10000 -e arm_spe_0// -- sleep 1 Would yield an SPE event with period=10000. After the patch, the period in "-c 10000" was being ignored because the arm-spe code initializes sample_period to a non-zero value. This patch restores the previous behaviour for non-libpfm4 events. Fixes: ae5dcc8abe31 (“perf record: Prevent override of attr->sample_period for libpfm4 events”) Reported-by: Chase Conklin <chase.conklin@arm.com> Signed-off-by: German Gomez <german.gomez@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Song Liu <songliubraving@fb.com> Cc: Stephane Eranian <eranian@google.com> Cc: Yonghong Song <yhs@fb.com> Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Link: http://lore.kernel.org/lkml/20220118144054.2541-1-german.gomez@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-01-22perf cpumap: Remove duplicate include in cpumap.hLv Ruyi
Remove all but the first include of stdbool.h from cpumap.h. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn> Acked-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220117083730.863200-1-lv.ruyi@zte.com.cn Signed-off-by: CGEL ZTE <cgel.zte@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-01-22perf cpumap: Migrate to libperf cpumap apiIan Rogers
Switch from directly accessing the perf_cpu_map to using the appropriate libperf API when possible. Using the API simplifies the job of refactoring use of perf_cpu_map. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: André Almeida <andrealmeid@collabora.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Darren Hart <dvhart@infradead.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: German Gomez <german.gomez@arm.com> Cc: James Clark <james.clark@arm.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Miaoqian Lin <linmq006@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Song Liu <song@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Stephen Brennan <stephen.s.brennan@oracle.com> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yury Norov <yury.norov@gmail.com> Link: http://lore.kernel.org/lkml/20220122045811.3402706-3-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-01-22perf python: Fix cpu_map__item() buildingIan Rogers
Value should be built as an integer. Switch some uses of perf_cpu_map to use the library API. Fixes: 6d18804b963b78dc ("perf cpumap: Give CPUs their own type") Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: André Almeida <andrealmeid@collabora.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Darren Hart <dvhart@infradead.org> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Dmitriy Vyukov <dvyukov@google.com> Cc: Eric Dumazet <edumazet@google.com> Cc: German Gomez <german.gomez@arm.com> Cc: Ian Rogers <irogers@google.com> Cc: James Clark <james.clark@arm.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Miaoqian Lin <linmq006@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Riccardo Mancini <rickyman7@gmail.com> Cc: Shunsuke Nakamura <nakamura.shun@fujitsu.com> Cc: Song Liu <song@kernel.org> Cc: Stephane Eranian <eranian@google.com> Cc: Stephen Brennan <stephen.s.brennan@oracle.com> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Yury Norov <yury.norov@gmail.com> Link: http://lore.kernel.org/lkml/20220122045811.3402706-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-01-22perf script: Fix printing 'phys_addr' failure issueYao Jin
Perf script was failed to print the phys_addr for SPE profiling. One 'dummy' event is added by SPE profiling but it doesn't have PHYS_ADDR attribute set, perf script then exits with error. Now referring to 'addr', use evsel__do_check_stype() to check the type. Before: # perf record -e arm_spe_0/branch_filter=0,ts_enable=1,pa_enable=1,load_filter=1,jitter=0,\ store_filter=0,min_latency=0,event_filter=2/ -p 4064384 -- sleep 3 # perf script -F pid,tid,addr,phys_addr Samples for 'dummy:u' event do not have PHYS_ADDR attribute set. Cannot print 'phys_addr' field. After: # perf record -e arm_spe_0/branch_filter=0,ts_enable=1,pa_enable=1,load_filter=1,jitter=0,\ store_filter=0,min_latency=0,event_filter=2/ -p 4064384 -- sleep 3 # perf script -F pid,tid,addr,phys_addr 4064384/4064384 ffff802f921be0d0 2f921be0d0 4064384/4064384 ffff802f921be0d0 2f921be0d0 Reviewed-by: German Gomez <german.gomez@arm.com> Signed-off-by: Yao Jin <jinyao5@huawei.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Hanjun Guo <guohanjun@huawei.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20220121065954.2121900-1-liwei391@huawei.com Signed-off-by: Wei Li <liwei391@huawei.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-01-23certs: Fix build error when CONFIG_MODULE_SIG_KEY is emptyMasahiro Yamada
Since b8c96a6b466c ("certs: simplify $(srctree)/ handling and remove config_filename macro"), when CONFIG_MODULE_SIG_KEY is empty, signing_key.x509 fails to build: CERT certs/signing_key.x509 Usage: extract-cert <source> <dest> make[1]: *** [certs/Makefile:78: certs/signing_key.x509] Error 2 make: *** [Makefile:1831: certs] Error 2 Pass "" to the first argument of extract-cert to fix the build error. Link: https://lore.kernel.org/linux-kbuild/20220120094606.2skuyb26yjlnu66q@lion.mk-sys.cz/T/#u Fixes: b8c96a6b466c ("certs: simplify $(srctree)/ handling and remove config_filename macro") Reported-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Michal Kubecek <mkubecek@suse.cz>
2022-01-23certs: Fix build error when CONFIG_MODULE_SIG_KEY is PKCS#11 URIMasahiro Yamada
When CONFIG_MODULE_SIG_KEY is PKCS#11 URL (pkcs11:*), signing_key.x509 fails to build: certs/Makefile:77: *** target pattern contains no '%'. Stop. Due to the typo, $(X509_DEP) contains a colon. Fix it. Fixes: b8c96a6b466c ("certs: simplify $(srctree)/ handling and remove config_filename macro") Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2022-01-23Revert "Makefile: Do not quote value for CONFIG_CC_IMPLICIT_FALLTHROUGH"Masahiro Yamada
This reverts commit cd8c917a56f20f48748dd43d9ae3caff51d5b987. Commit 129ab0d2d9f3 ("kbuild: do not quote string values in include/config/auto.conf") provided the final solution. Now reverting the temporary workaround. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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