linux-kernel - [PATCH] perf report: Provide libtraceevent with a kernel symbol resolver

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Message-ID: <20180115044732.GB20373@udknight>
Date:   Mon, 15 Jan 2018 12:47:32 +0800
From:   Wang YanQing <udknight@...il.com>
To:     acme@...nel.org
Cc:     peterz@...radead.org, mingo@...hat.com, jolsa@...hat.com,
        alexander.shishkin@...ux.intel.com, linux-kernel@...r.kernel.org
Subject: [PATCH] perf report: Provide libtraceevent with a kernel symbol
 resolver

So that beautifiers wanting to resolve kernel function addresses to
names can do its work, and when we use "perf report" for output of
"perf kmem record", we will get kernel symbol output.

Signed-off-by: Wang YanQing <udknight@...il.com>
---
 tools/perf/builtin-report.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index dd4df9a..7b65100 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -1317,6 +1317,15 @@ int cmd_report(int argc, const char **argv)
 		report.range_num = 1;
 	}
 
+	if (session->tevent.pevent &&
+	    pevent_set_function_resolver(session->tevent.pevent,
+					 machine__resolve_kernel_addr,
+					 &session->machines.host) < 0) {
+		pr_err("%s: failed to set libtraceevent function resolver\n",
+		       __func__);
+		return -1;
+	}
+
 	sort__setup_elide(stdout);
 
 	ret = __cmd_report(&report);
-- 
1.8.5.6.2.g3d8a54e.dirty