user/sven/linux.git/Documentation/admin-guide/kernel-per-CPU-kthreads.rst, branch v6.3.3

docs: ftrace: always use canonical ftrace path

2023-01-31T21:02:30Z

The canonical location for the tracefs filesystem is at /sys/kernel/tracing. But, from Documentation/trace/ftrace.rst: Before 4.1, all ftrace tracing control files were within the debugfs file system, which is typically located at /sys/kernel/debug/tracing. For backward compatibility, when mounting the debugfs file system, the tracefs file system will be automatically mounted at: /sys/kernel/debug/tracing Many parts of Documentation still reference this older debugfs path, so let's update them to avoid confusion. Signed-off-by: Ross Zwisler Reviewed-by: Steven Rostedt (Google) Link: https://lore.kernel.org/r/20230125213251.2013791-1-zwisler@google.com Signed-off-by: Jonathan Corbet

doc: Remove obsolete kernel-per-CPU-kthreads RCU_FAST_NO_HZ advice

2021-12-01T01:23:06Z

This document advises building with both CONFIG_NO_HZ=y and CONFIG_RCU_FAST_NO_HZ=y. However, CONFIG_NO_HZ=y offloads callbacks from all nohz_full CPUs, and CPUs with offloaded callbacks do not benefit from CONFIG_RCU_FAST_NO_HZ=y. Quite the opposite: CONFIG_RCU_FAST_NO_HZ=y simply adds a bit of idle entry/exit overhead. This commit therefore changes that advice to only CONFIG_NO_HZ=y. Signed-off-by: Paul E. McKenney

doc: admin-guide: remove explanation of "watchdog/%u"

2021-03-31T20:32:02Z

"watchdog/%u" threads has be replaced by cpu_stop_work, which will mislead the reader. Signed-off-by: Wang Qing Link: https://lore.kernel.org/r/1615801744-31548-1-git-send-email-wangqing@vivo.com Signed-off-by: Jonathan Corbet

Documentation: Replace lkml.org links with lore

2021-01-11T19:47:38Z

Replace the lkml.org links with lore to better use a single source that's more likely to stay available long-term. Done by bash script: cvt_lkml_to_lore () { tmpfile=$(mktemp ./.cvt_links.XXXXXXX) header=$(echo $1 | sed 's@/lkml/@/lkml/headers/@') wget -qO - $header > $tmpfile if [[ $? == 0 ]] ; then link=$(grep -i '^Message-Id:' $tmpfile | head -1 | \ sed -r -e 's/^\s*Message-Id:\s*<\s*//' -e 's/\s*>\s*$//' -e 's@^@https://lore.kernel.org/r/@') # echo "testlink: $link" if [ -n "$link" ] ; then wget -qO - $link > /dev/null if [[ $? == 0 ]] ; then echo $link fi fi fi rm -f $tmpfile } git grep -P -o "\bhttps?://(?:www.)?lkml.org/lkml[\/\w]+" $@ | while read line ; do echo $line file=$(echo $line | cut -f1 -d':') link=$(echo $line | cut -f2- -d':') newlink=$(cvt_lkml_to_lore $link) if [[ -n "$newlink" ]] ; then sed -i -e "s#\b$link\b#$newlink#" $file fi done Link: https://lore.kernel.org/patchwork/patch/1265849/#1462688 Signed-off-by: Joe Perches Link: https://lore.kernel.org/r/77cdb7f32cfb087955bfc3600b86c40bed5d4104.camel@perches.com Signed-off-by: Jonathan Corbet

docs: add IRQ documentation at the core-api book

2020-05-15T18:00:56Z

There are 4 IRQ documentation files under Documentation/*.txt. Move them into a new directory (core-api/irq) and add a new index file for it. While here, use a title markup for the Debugging section of the irq-domain.rst file. Signed-off-by: Mauro Carvalho Chehab Link: https://lore.kernel.org/r/2da7485c3718e1442e6b4c2dd66857b776e8899b.1588345503.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet

Documentation: kthread: Fix WQ_SYSFS workqueues path name

2020-03-02T20:04:57Z

The set of WQ_SYSFS workqueues should be displayed using "ls /sys/devices/virtual/workqueue", add the missing '/'. Signed-off-by: Zenghui Yu Link: https://lore.kernel.org/r/20200225124052.1506-1-yuzenghui@huawei.com Signed-off-by: Jonathan Corbet

Documentation:kernel-per-CPU-kthreads.txt: Remove reference to elevator=

2019-09-03T14:05:37Z

This argument was not being considered since blk-mq was set by default, so removed this documentation to avoid confusion. Reviewed-by: Hannes Reinecke Reviewed-by: Christoph Hellwig Signed-off-by: Marcos Paulo de Souza .txt file is now .rst Signed-off-by: Jens Axboe

docs: admin-guide: add a series of orphaned documents

2019-07-15T14:03:02Z

There are lots of documents that belong to the admin-guide but are on random places (most under Documentation root dir). Move them to the admin guide. Signed-off-by: Mauro Carvalho Chehab Acked-by: Alexandre Belloni Acked-by: Bartlomiej Zolnierkiewicz