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perf annotate: Add --demangle and --demangle-kernel

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'perf annotate' supports --symbol but it's impossible to filter a C++
symbol. With --no-demangle one can filter easily by mangled function
name.

Signed-off-by: Martin Liška <mliska@suse.cz>
Link: http://lore.kernel.org/lkml/c3c7e959-9f7f-18e2-e795-f604275cbac3@suse.cz
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Martin Liška 2021-03-30 20:33:55 +02:00 committed by Arnaldo Carvalho de Melo
parent 292c5ed168
commit 3406ac5347
2 changed files with 11 additions and 0 deletions
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7
tools/perf/Documentation/perf-annotate.txt
View File

@ -124,6 +124,13 @@ OPTIONS
--group::
Show event group information together
--demangle::
Demangle symbol names to human readable form. It's enabled by default,
disable with --no-demangle.
--demangle-kernel::
Demangle kernel symbol names to human readable form (for C++ kernels).
--percent-type::
Set annotation percent type from following choices:
global-period, local-period, global-hits, local-hits

4
tools/perf/builtin-annotate.c
View File

@ -538,6 +538,10 @@ int cmd_annotate(int argc, const char **argv)
"Strip first N entries of source file path name in programs (with --prefix)"),
OPT_STRING(0, "objdump", &annotate.opts.objdump_path, "path",
"objdump binary to use for disassembly and annotations"),
OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
"Enable symbol demangling"),
OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
"Enable kernel symbol demangling"),
OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
"Show event group information together"),
OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,