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2021-12-10docs/trace: fix a label of boottime-traceYanteng Si1-3/+1
Commit 559789539255 ("Documentation: tracing: Add histogram syntax to boot-time tracing") introduced a warning: linux/Documentation/trace/boottime-trace.rst:136: WARNING: undefined label: histogram (if the link has no caption the label must precede a section header) Replace with: (path) Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Fixes: 559789539255 ("Documentation: tracing: Add histogram syntax to boot-time tracing") Link: https://lore.kernel.org/r/20211210041536.1446734-1-siyanteng@loongson.cn Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2021-08-16Documentation: tracing: Add histogram syntax to boot-time tracingMasami Hiramatsu1-5/+80
Add the documentation about histogram syntax in boot-time tracing. This will allow user to write the histogram setting in a structured parameters. Link: https://lkml.kernel.org/r/162856127129.203126.15551542847575916525.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2021-06-10Documentation: tracing: Add per-group/all events enablement desciptionMasami Hiramatsu1-0/+6
Add ftrace.event.<GROUP>.enable and ftrace.event.enable bootconfig description in the boot-time tracing document. Link: https://lkml.kernel.org/r/162264438901.302580.10697703336929432947.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-09-22Documentation: tracing: Add the startup timing of boot-time tracingMasami Hiramatsu1-0/+14
Add the note about when to start the boot-time tracing. This will be needed for the people who wants to trace earlier boot sequence. Link: https://lkml.kernel.org/r/159974156678.478751.10215894815285734481.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-09-22Documentation: tracing: boot: Add an example of tracing function-callsMasami Hiramatsu1-0/+20
Add an example of tracing function calls on a specific function. Link: https://lkml.kernel.org/r/159972816669.428528.12390560334549382316.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-09-22Documentation: tracing: Add tracing_on option to boot-time tracerMasami Hiramatsu1-0/+4
Add tracing_on option description to the boot-time tracer. Link: https://lkml.kernel.org/r/159978523520.485820.9250337223076929279.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-01-22Documentation: tracing: Fix typos in boot-time tracing documentationMasami Hiramatsu1-9/+9
Fix typos in boottime-trace.rst according to Randy's suggestions. Link: http://lkml.kernel.org/r/157949060335.25888.13153184562531693684.stgit@devnote2 Suggested-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-01-13Documentation: tracing: Add boot-time tracing documentMasami Hiramatsu1-0/+184
Add a documentation about boot-time tracing options in boot config. Link: http://lkml.kernel.org/r/157867246028.17873.8047384554383977870.stgit@devnote2 Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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