linux-kernel - Re: perf test for daemon

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Date:   Thu, 25 Feb 2021 20:35:53 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     John Garry <john.garry@...wei.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: perf test for daemon

On Thu, Feb 25, 2021 at 08:13:07PM +0100, Jiri Olsa wrote:
> On Thu, Feb 25, 2021 at 06:39:22PM +0000, John Garry wrote:
> > 
> > Hi,
> > 
> > I notice that "perf test" when run without root priviledges now hangs at the
> > daemon test - is this expected behaviour? Can we skip and warn the user
> > instead?
> > 
> > I'm checking acme perf/core today.
> 
> ugh, I'll check.. looks like control fifo files are created with wrong permissions

could you please try the fix below? it's passing with non-root user for me

thanks,
jirka


---
diff --git a/tools/perf/builtin-daemon.c b/tools/perf/builtin-daemon.c
index 617feaf020f6..8f0ed2e59280 100644
--- a/tools/perf/builtin-daemon.c
+++ b/tools/perf/builtin-daemon.c
@@ -373,12 +373,12 @@ static int daemon_session__run(struct daemon_session *session,
 	dup2(fd, 2);
 	close(fd);
 
-	if (mkfifo(SESSION_CONTROL, O_RDWR) && errno != EEXIST) {
+	if (mkfifo(SESSION_CONTROL, 0600) && errno != EEXIST) {
 		perror("failed: create control fifo");
 		return -1;
 	}
 
-	if (mkfifo(SESSION_ACK, O_RDWR) && errno != EEXIST) {
+	if (mkfifo(SESSION_ACK, 0600) && errno != EEXIST) {
 		perror("failed: create ack fifo");
 		return -1;
 	}
diff --git a/tools/perf/tests/shell/daemon.sh b/tools/perf/tests/shell/daemon.sh
index e5b824dd08d9..5ad3ca8d681b 100755
--- a/tools/perf/tests/shell/daemon.sh
+++ b/tools/perf/tests/shell/daemon.sh
@@ -140,10 +140,10 @@ test_list()
 base=BASE
 
 [session-size]
-run = -e cpu-clock
+run = -e cpu-clock -m 1 sleep 10
 
 [session-time]
-run = -e task-clock
+run = -e task-clock -m 1 sleep 10
 EOF
 
 	sed -i -e "s|BASE|${base}|" ${config}
@@ -159,14 +159,14 @@ EOF
 	# check 1st session
 	# pid:size:-e cpu-clock:base/size:base/size/output:base/size/control:base/size/ack:0
 	local line=`perf daemon --config ${config} -x: | head -2 | tail -1`
-	check_line_other "${line}" size "-e cpu-clock" ${base}/session-size \
+	check_line_other "${line}" size "-e cpu-clock -m 1 sleep 10" ${base}/session-size \
 			 ${base}/session-size/output ${base}/session-size/control \
 			 ${base}/session-size/ack "0"
 
 	# check 2nd session
 	# pid:time:-e task-clock:base/time:base/time/output:base/time/control:base/time/ack:0
 	local line=`perf daemon --config ${config} -x: | head -3 | tail -1`
-	check_line_other "${line}" time "-e task-clock" ${base}/session-time \
+	check_line_other "${line}" time "-e task-clock -m 1 sleep 10" ${base}/session-time \
 			 ${base}/session-time/output ${base}/session-time/control \
 			 ${base}/session-time/ack "0"
 
@@ -190,10 +190,10 @@ test_reconfig()
 base=BASE
 
 [session-size]
-run = -e cpu-clock
+run = -e cpu-clock -m 1 sleep 10
 
 [session-time]
-run = -e task-clock
+run = -e task-clock -m 1 sleep 10
 EOF
 
 	sed -i -e "s|BASE|${base}|" ${config}
@@ -204,7 +204,7 @@ EOF
 	# check 2nd session
 	# pid:time:-e task-clock:base/time:base/time/output:base/time/control:base/time/ack:0
 	local line=`perf daemon --config ${config} -x: | head -3 | tail -1`
-	check_line_other "${line}" time "-e task-clock" ${base}/session-time \
+	check_line_other "${line}" time "-e task-clock -m 1 sleep 10" ${base}/session-time \
 			 ${base}/session-time/output ${base}/session-time/control ${base}/session-time/ack "0"
 	local pid=`echo "${line}" | awk 'BEGIN { FS = ":" } ; { print $1 }'`
 
@@ -215,10 +215,10 @@ EOF
 base=BASE
 
 [session-size]
-run = -e cpu-clock
+run = -e cpu-clock -m 1 sleep 10
 
 [session-time]
-run = -e cpu-clock
+run = -e cpu-clock -m 1 sleep 10
 EOF
 
 	# TEST 1 - change config
@@ -238,7 +238,7 @@ EOF
 	# check reconfigured 2nd session
 	# pid:time:-e task-clock:base/time:base/time/output:base/time/control:base/time/ack:0
 	local line=`perf daemon --config ${config} -x: | head -3 | tail -1`
-	check_line_other "${line}" time "-e cpu-clock" ${base}/session-time \
+	check_line_other "${line}" time "-e cpu-clock -m 1 sleep 10" ${base}/session-time \
 			 ${base}/session-time/output ${base}/session-time/control ${base}/session-time/ack "0"
 
 	# TEST 2 - empty config
@@ -309,10 +309,10 @@ test_stop()
 base=BASE
 
 [session-size]
-run = -e cpu-clock
+run = -e cpu-clock -m 1 sleep 10
 
 [session-time]
-run = -e task-clock
+run = -e task-clock -m 1 sleep 10
 EOF
 
 	sed -i -e "s|BASE|${base}|" ${config}
@@ -361,7 +361,7 @@ test_signal()
 base=BASE
 
 [session-test]
-run = -e cpu-clock --switch-output
+run = -e cpu-clock --switch-output -m 1 sleep 10
 EOF
 
 	sed -i -e "s|BASE|${base}|" ${config}
@@ -400,10 +400,10 @@ test_ping()
 base=BASE
 
 [session-size]
-run = -e cpu-clock
+run = -e cpu-clock -m 1 sleep 10
 
 [session-time]
-run = -e task-clock
+run = -e task-clock -m 1 sleep 10
 EOF
 
 	sed -i -e "s|BASE|${base}|" ${config}
@@ -439,7 +439,7 @@ test_lock()
 base=BASE
 
 [session-size]
-run = -e cpu-clock
+run = -e cpu-clock -m 1 sleep 10
 EOF
 
 	sed -i -e "s|BASE|${base}|" ${config}