On 7/7/20 4:19 AM, Paolo Bonzini wrote:
Calling ksft_exit_skip after ksft_set_plan results in executing fewer tests
than planned.  Use ksft_test_result_skip instead.

The plan passed to ksft_set_plan was wrong, too, so fix it while at it.

Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
Message-Id: <20200623001547.22255-5-pbonz...@redhat.com>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
  tools/testing/selftests/pidfd/pidfd_test.c | 34 +++++++++++++++++++---
  1 file changed, 30 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/pidfd/pidfd_test.c 
b/tools/testing/selftests/pidfd/pidfd_test.c
index 7aff2d3b42c0..f65ad4e32353 100644
--- a/tools/testing/selftests/pidfd/pidfd_test.c
+++ b/tools/testing/selftests/pidfd/pidfd_test.c
@@ -8,6 +8,7 @@
  #include <sched.h>
  #include <signal.h>
  #include <stdio.h>
+#include <stdbool.h>
  #include <stdlib.h>
  #include <string.h>
  #include <syscall.h>
@@ -27,6 +28,8 @@
#define MAX_EVENTS 5 +static bool have_pidfd_send_signal = false;

You don't need to initialize this to false. Rest looks good.

+
  static pid_t pidfd_clone(int flags, int *pidfd, int (*fn)(void *))
  {
        size_t stack_size = 1024;
@@ -56,6 +59,13 @@ static int test_pidfd_send_signal_simple_success(void)
        int pidfd, ret;
        const char *test_name = "pidfd_send_signal send SIGUSR1";
+ if (!have_pidfd_send_signal) {
+               ksft_test_result_skip(
+                       "%s test: pidfd_send_signal() syscall not supported\n",
+                       test_name);
+               return 0;
+       }
+
        pidfd = open("/proc/self", O_DIRECTORY | O_CLOEXEC);
        if (pidfd < 0)
                ksft_exit_fail_msg(
@@ -86,6 +96,13 @@ static int test_pidfd_send_signal_exited_fail(void)
        pid_t pid;
        const char *test_name = "pidfd_send_signal signal exited process";
+ if (!have_pidfd_send_signal) {
+               ksft_test_result_skip(
+                       "%s test: pidfd_send_signal() syscall not supported\n",
+                       test_name);
+               return 0;
+       }
+
        pid = fork();
        if (pid < 0)
                ksft_exit_fail_msg("%s test: Failed to create new process\n",
@@ -137,6 +154,13 @@ static int test_pidfd_send_signal_recycled_pid_fail(void)
        pid_t pid1;
        const char *test_name = "pidfd_send_signal signal recycled pid";
+ if (!have_pidfd_send_signal) {
+               ksft_test_result_skip(
+                       "%s test: pidfd_send_signal() syscall not supported\n",
+                       test_name);
+               return 0;
+       }
+
        ret = unshare(CLONE_NEWPID);
        if (ret < 0)
                ksft_exit_fail_msg("%s test: Failed to unshare pid namespace\n",
@@ -325,15 +349,17 @@ static int test_pidfd_send_signal_syscall_support(void)
ret = sys_pidfd_send_signal(pidfd, 0, NULL, 0);
        if (ret < 0) {
-               if (errno == ENOSYS)
-                       ksft_exit_skip(
+               if (errno == ENOSYS) {
+                       ksft_test_result_skip(
                                "%s test: pidfd_send_signal() syscall not 
supported\n",
                                test_name);
-
+                       return 0;
+               }
                ksft_exit_fail_msg("%s test: Failed to send signal\n",
                                   test_name);
        }
+ have_pidfd_send_signal = true;
        close(pidfd);
        ksft_test_result_pass(
                "%s test: pidfd_send_signal() syscall is supported. Tests can be 
executed\n",
@@ -521,7 +547,7 @@ static void test_pidfd_poll_leader_exit(int use_waitpid)
  int main(int argc, char **argv)
  {
        ksft_print_header();
-       ksft_set_plan(4);
+       ksft_set_plan(8);
test_pidfd_poll_exec(0);
        test_pidfd_poll_exec(1);


thanks,
-- Shuah

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