tracing: probeevent: Introduce new argument fetching code

Browse source

Replace {k,u}probe event argument fetching framework with switch-case based.
Currently that is implemented with structures, macros and chain of
function-pointers, which is more complicated than necessary and may get a
performance penalty by retpoline.

This simplify that with an array of "fetch_insn" (opcode and oprands), and
make process_fetch_insn() just interprets it. No function pointers are used.

Link: http://lkml.kernel.org/r/152465868340.26224.2551120475197839464.stgit@devbox

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

...

This commit is contained in:

Masami Hiramatsu 2018-04-25 21:18:03 +09:00 • committed by Steven Rostedt (VMware)

parent 7bfbc63eda

commit 533059281e

5 changed files with 491 additions and 678 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

291

kernel/trace/trace_kprobe.c

View file

399

kernel/trace/trace_probe.c

View file

230

kernel/trace/trace_probe.h

View file

120

kernel/trace/trace_probe_tmpl.h

View file

125

kernel/trace/trace_uprobe.c

View file