android_kernel_motorola_sm6375/Documentation/trace
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Masami Hiramatsu 6218bf9f4d tracing/probe: Add immediate parameter support
Add immediate value parameter (\1234) support to
probe events. This allows you to specify an immediate
(or dummy) parameter instead of fetching from memory
or register.

This feature looks odd, but imagine when you put a probe
on a code to trace some data. If the code is compiled into
2 instructions and 1 instruction has a value but other has
nothing since it is optimized out.
In that case, you can not fold those into one event, even
if ftrace supported multiple probes on one event.
With this feature, you can set a dummy value like
foo=\deadbeef instead of something like foo=%di.

Link: http://lkml.kernel.org/r/156095690733.28024.13258186548822649469.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2019-08-31 12:19:39 -04:00
..
postprocess mm: move recent_rotated pages calculation to shrink_inactive_list() 2019-05-14 09:47:45 -07:00
coresight-cpu-debug.txt docs: power: convert docs to ReST and rename to *.rst 2019-06-14 16:08:36 -05:00
coresight.txt Documentation: coresight: Update the generic device names 2019-06-14 14:43:21 -06:00
events-kmem.rst
events-msr.rst
events-nmi.rst
events-power.rst
events.rst
ftrace-design.rst
ftrace-uses.rst
ftrace.rst The major changes in this tracing update includes: 2019-05-15 16:05:47 -07:00
function-graph-fold.vim
histogram.rst docs: tracing: Fix typos in histogram.rst 2019-05-29 15:49:01 -06:00
hwlat_detector.rst
index.rst stm class: Add a reference to the SyS-T document 2018-12-19 20:21:06 +01:00
intel_th.rst intel_th: SPDX-ify the documentation 2019-05-03 18:14:29 +02:00
kprobetrace.rst tracing/probe: Add immediate parameter support 2019-08-31 12:19:39 -04:00
mmiotrace.rst
ring-buffer-design.txt
stm.rst stm class: SPDX-ify the documentation 2018-10-11 12:12:55 +02:00
sys-t.rst stm class: Document the MIPI SyS-T protocol usage 2018-10-11 12:12:55 +02:00
tracepoint-analysis.rst
tracepoints.rst
uprobetracer.rst tracing/probe: Add immediate parameter support 2019-08-31 12:19:39 -04:00