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perf tools: Add -H short option for --hierarchy 

I found the hierarchy mode useful, but it's easy to make a typo when
using it.  Let's add a short option for that.

Also update the documentation. :)

Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/r/20240125055124.1579617-1-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
This commit is contained in:
Namhyung Kim 2024-01-24 21:51:24 -08:00
parent 24852ef2e2
commit 7727d59de4
4 changed files with 61 additions and 4 deletions
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29
tools/perf/Documentation/perf-report.txt
View File

@ -531,8 +531,35 @@ include::itrace.txt[]
--raw-trace::
When displaying traceevent output, do not use print fmt or plugins.
-H::
--hierarchy::
Enable hierarchical output.
Enable hierarchical output. In the hierarchy mode, each sort key groups
samples based on the criteria and then sub-divide it using the lower
level sort key.
For example:
In normal output:
perf report -s dso,sym
# Overhead Shared Object Symbol
50.00% [kernel.kallsyms] [k] kfunc1
20.00% perf [.] foo
15.00% [kernel.kallsyms] [k] kfunc2
10.00% perf [.] bar
5.00% libc.so [.] libcall
In hierarchy output:
perf report -s dso,sym --hierarchy
# Overhead Shared Object / Symbol
65.00% [kernel.kallsyms]
50.00% [k] kfunc1
15.00% [k] kfunc2
30.00% perf
20.00% [.] foo
10.00% [.] bar
5.00% libc.so
5.00% [.] libcall
--inline::
If a callgraph address belongs to an inlined function, the inline stack

32
tools/perf/Documentation/perf-top.txt
View File

@ -261,8 +261,38 @@ Default is to monitor all CPUS.
--raw-trace::
When displaying traceevent output, do not use print fmt or plugins.
-H::
--hierarchy::
Enable hierarchy output.
Enable hierarchical output. In the hierarchy mode, each sort key groups
samples based on the criteria and then sub-divide it using the lower
level sort key.
For example, in normal output:
perf report -s dso,sym
#
# Overhead Shared Object Symbol
# ........ ................. ...........
50.00% [kernel.kallsyms] [k] kfunc1
20.00% perf [.] foo
15.00% [kernel.kallsyms] [k] kfunc2
10.00% perf [.] bar
5.00% libc.so [.] libcall
In hierarchy output:
perf report -s dso,sym --hierarchy
#
# Overhead Shared Object / Symbol
# .......... ......................
65.00% [kernel.kallsyms]
50.00% [k] kfunc1
15.00% [k] kfunc2
30.00% perf
20.00% [.] foo
10.00% [.] bar
5.00% libc.so
5.00% [.] libcall
--overwrite::
Enable this to use just the most recent records, which helps in high core count

2
tools/perf/builtin-report.c
View File

@ -1410,7 +1410,7 @@ int cmd_report(int argc, const char **argv)
"only show processor socket that match with this filter"),
OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
"Show raw trace event output (do not use print fmt or plugins)"),
OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
OPT_BOOLEAN('H', "hierarchy", &symbol_conf.report_hierarchy,
"Show entries in a hierarchy"),
OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
"'always' (default), 'never' or 'auto' only applicable to --stdio mode",

2
tools/perf/builtin-top.c
View File

@ -1573,7 +1573,7 @@ int cmd_top(int argc, const char **argv)
"add last branch records to call history"),
OPT_BOOLEAN(0, "raw-trace", &symbol_conf.raw_trace,
"Show raw trace event output (do not use print fmt or plugins)"),
OPT_BOOLEAN(0, "hierarchy", &symbol_conf.report_hierarchy,
OPT_BOOLEAN('H', "hierarchy", &symbol_conf.report_hierarchy,
"Show entries in a hierarchy"),
OPT_BOOLEAN(0, "overwrite", &top.record_opts.overwrite,
"Use a backward ring buffer, default: no"),