linux-kernel - [PATCH 2/2] perf script: Support dso filter

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Date:   Mon, 25 Jan 2021 07:27:50 +0800
From:   Jin Yao <yao.jin@...ux.intel.com>
To:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com
Cc:     Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com,
        Jin Yao <yao.jin@...ux.intel.com>
Subject: [PATCH 2/2] perf script: Support dso filter

Other perf tool builtins have already supported dso filter.

For example,
perf report --dso, which only considers symbols in these dsos.

Now dso filter is supported for perf-script.

root@...-ppc:~# ./perf script --dso "[kernel.kallsyms]"
            perf 18123 [000] 6142863.075104:          1   cycles:  ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
            perf 18123 [000] 6142863.075107:          1   cycles:  ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
            perf 18123 [000] 6142863.075108:         10   cycles:  ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
            perf 18123 [000] 6142863.075109:        273   cycles:  ffffffff9ca7730a native_write_msr+0xa ([kernel.kallsyms])
            perf 18123 [000] 6142863.075110:       7684   cycles:  ffffffff9ca3c9c0 native_sched_clock+0x50 ([kernel.kallsyms])
            perf 18123 [000] 6142863.075112:     213017   cycles:  ffffffff9d765a92 syscall_exit_to_user_mode+0x32 ([kernel.kallsyms])
            perf 18123 [001] 6142863.075156:          1   cycles:  ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
            perf 18123 [001] 6142863.075158:          1   cycles:  ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])
            perf 18123 [001] 6142863.075159:         17   cycles:  ffffffff9ca77308 native_write_msr+0x8 ([kernel.kallsyms])

Signed-off-by: Jin Yao <yao.jin@...ux.intel.com>
---
 tools/perf/Documentation/perf-script.txt | 3 +++
 tools/perf/builtin-script.c              | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 0ef2261baeb9..6e32b2f9b828 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -444,6 +444,9 @@ include::itrace.txt[]
 	[0x4007a0, 0x0x4007a9]:
 	perf script -S 0x4007a0 --addr-range 10
 
+--dsos=::
+	Only consider symbols in these dsos.
+
 --call-trace::
 	Show call stream for intel_pt traces. The CPUs are interleaved, but
 	can be filtered with -C.
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index e0feda33dbb9..f8d3d8582ea2 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -3523,6 +3523,8 @@ int cmd_script(int argc, const char **argv)
 		     parse_output_fields),
 	OPT_BOOLEAN('a', "all-cpus", &system_wide,
 		    "system-wide collection from all CPUs"),
+	OPT_STRING(0, "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
+		   "only consider symbols in these dsos"),
 	OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
 		   "only consider these symbols"),
 	OPT_INTEGER(0, "addr-range", &symbol_conf.addr_range,
-- 
2.17.1