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4 Commits

Author SHA1 Message Date
Randy Dunlap
2e171403c5 Documentation: trace/histogram-design: drop doubled words 
Drop the doubled words "to" and "the".

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Link: https://lore.kernel.org/r/20200703212453.30553-3-rdunlap@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
 2020-07-05 14:40:55 -06:00
Tom Zanussi
daceabf1b4 tracing/doc: Fix ascii-art in histogram-design.rst 
This fixes the Sphinx parallel build error when building htmldocs:

  docutils.utils.SystemMessage: /home/sfr/next/next/Documentation/trace/histogram-design.rst:219: (SEVERE/4) Unexpected section title.

It also fixes a bunch of other warnings I noticed when fixing the
above, caused by mixing ascii-art and text.

Link: https://lkml.kernel.org/r/69c291c76964642a417e5dd170d183ba6b552010.camel@kernel.org

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Tested-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
 2020-06-03 19:38:13 -04:00
Steven Rostedt (VMware)
0906844545 tracing/doc: Fix typos in histogram-design.rst 
There's a few typos in the histogram-design.rst document that need need to
be fixed.

Cc: Tom Zanussi <zanussi@kernel.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
 2020-06-01 08:22:46 -04:00
Tom Zanussi
16b585fe71 tracing: Add histogram-design document 
Add a new Documentation/trace/histogram-design.rst file describing the
ftrace histogram low-level design, meant to help developers trying to
understand the internals when extending or making use of the hist
triggers for higher-level tools.

This documentation refers to the hist_debug files implemented by
'tracing: Add hist_debug trace event files for histogram debugging' so
users wishing to try out the test examples here should make sure
CONFIG_HIST_TRIGGERS_DEBUG is enabled.

Link: http://lkml.kernel.org/r/256b29c3274bb89a10157c4a8d1a8bce7e74849e.1585941485.git.zanussi@kernel.org

Signed-off-by: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
 2020-06-01 08:22:04 -04:00