6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Viktor Malik <vmalik@xxxxxxxxxx>
[ Upstream commit 937a1c29a287e8f48c4cea714c76a13e14d989ac ]
The timer_lockup test needs 2 CPUs to work, on single-CPU nodes it fails
to set thread affinity to CPU 1 since it doesn't exist:
# ./test_progs -t timer_lockup
test_timer_lockup:PASS:timer_lockup__open_and_load 0 nsec
test_timer_lockup:PASS:pthread_create thread1 0 nsec
test_timer_lockup:PASS:pthread_create thread2 0 nsec
timer_lockup_thread:PASS:cpu affinity 0 nsec
timer_lockup_thread:FAIL:cpu affinity unexpected error: 22 (errno 0)
test_timer_lockup:PASS: 0 nsec
#406 timer_lockup:FAIL
Skip the test if only 1 CPU is available.
Signed-off-by: Viktor Malik <vmalik@xxxxxxxxxx>
Fixes: 50bd5a0c658d1 ("selftests/bpf: Add timer lockup selftest")
Tested-by: Philo Lu <lulie@xxxxxxxxxxxxxxxxx>
Acked-by: Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx>
Link: https://lore.kernel.org/r/20241107115231.75200-1-vmalik@xxxxxxxxxx
Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
tools/testing/selftests/bpf/prog_tests/timer_lockup.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/tools/testing/selftests/bpf/prog_tests/timer_lockup.c b/tools/testing/selftests/bpf/prog_tests/timer_lockup.c
index 871d16cb95cfd..1a2f99596916f 100644
--- a/tools/testing/selftests/bpf/prog_tests/timer_lockup.c
+++ b/tools/testing/selftests/bpf/prog_tests/timer_lockup.c
@@ -5,6 +5,7 @@
#include <test_progs.h>
#include <pthread.h>
#include <network_helpers.h>
+#include <sys/sysinfo.h>
#include "timer_lockup.skel.h"
@@ -52,6 +53,11 @@ void test_timer_lockup(void)
pthread_t thrds[2];
void *ret;
+ if (get_nprocs() < 2) {
+ test__skip();
+ return;
+ }
+
skel = timer_lockup__open_and_load();
if (!ASSERT_OK_PTR(skel, "timer_lockup__open_and_load"))
return;
--
2.43.0
