linux-kernel - [PATCH 05/11] perf machine: Factor out machines__find

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Message-Id: <20210218095801.19576-6-adrian.hunter@intel.com>
Date:   Thu, 18 Feb 2021 11:57:55 +0200
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...hat.com>, Andi Kleen <ak@...ux.intel.com>
Cc:     Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 05/11] perf machine: Factor out machines__find_guest()

Factor out machines__find_guest() so it can be re-used.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
---
 tools/perf/util/machine.c | 9 +++++++++
 tools/perf/util/machine.h | 1 +
 tools/perf/util/session.c | 7 +------
 3 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index ab8a6b3e801d..90703b7ca6de 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -369,6 +369,15 @@ struct machine *machines__findnew(struct machines *machines, pid_t pid)
 	return machine;
 }
 
+struct machine *machines__find_guest(struct machines *machines, pid_t pid)
+{
+	struct machine *machine = machines__find(machines, pid);
+
+	if (!machine)
+		machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID);
+	return machine;
+}
+
 void machines__process_guests(struct machines *machines,
 			      machine__process_t process, void *data)
 {
diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h
index 26368d3c1754..022c19ecd287 100644
--- a/tools/perf/util/machine.h
+++ b/tools/perf/util/machine.h
@@ -162,6 +162,7 @@ struct machine *machines__add(struct machines *machines, pid_t pid,
 struct machine *machines__find_host(struct machines *machines);
 struct machine *machines__find(struct machines *machines, pid_t pid);
 struct machine *machines__findnew(struct machines *machines, pid_t pid);
+struct machine *machines__find_guest(struct machines *machines, pid_t pid);
 
 void machines__set_id_hdr_size(struct machines *machines, u16 id_hdr_size);
 void machines__set_comm_exec(struct machines *machines, bool comm_exec);
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index f4aeb1af05d8..7b0d0c9e3dd1 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1356,8 +1356,6 @@ static struct machine *machines__find_for_cpumode(struct machines *machines,
 					       union perf_event *event,
 					       struct perf_sample *sample)
 {
-	struct machine *machine;
-
 	if (perf_guest &&
 	    ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
 	     (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) {
@@ -1369,10 +1367,7 @@ static struct machine *machines__find_for_cpumode(struct machines *machines,
 		else
 			pid = sample->pid;
 
-		machine = machines__find(machines, pid);
-		if (!machine)
-			machine = machines__findnew(machines, DEFAULT_GUEST_KERNEL_ID);
-		return machine;
+		return machines__find_guest(machines, pid);
 	}
 
 	return &machines->host;
-- 
2.17.1