Re: [PATCH v2 resend] selftests: timers: clocksource-switch: Adapt progress to kselftest framework

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On 12/12/24 02:02, Geert Uytterhoeven wrote:
When adapting the test to the kselftest framework, a few printf() calls
indicating test progress were not updated.

Fix this by replacing these printf() calls by ksft_print_msg() calls.

Fixes: ce7d101750ff8450 ("selftests: timers: clocksource-switch: adapt to kselftest framework")
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Reviewed-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
v2:
   - Add Reviewed-by.

When just running the test, the output looks like:

     # Validating clocksource arch_sys_counter
     TAP version 13
     1..12
     ok 1 CLOCK_REALTIME
     ...
     # Validating clocksource ffca0000.timer
     TAP version 13
     1..12
     ok 1 CLOCK_REALTIME
     ...

When redirecting the test output to a file, the progress prints are not
interspersed with the test output, but collated at the end:

     TAP version 13
     1..12
     ok 1 CLOCK_REALTIME
     ...
     TAP version 13
     1..12
     ok 1 CLOCK_REALTIME
     ...
     # Totals: pass:6 fail:0 xfail:0 xpass:0 skip:6 error:0
     # Validating clocksource arch_sys_counter
     # Validating clocksource ffca0000.timer
     ...

This makes it hard to match the test results with the timer under test.
Is there a way to fix this?  The test does use fork().

Thanks!
---
  tools/testing/selftests/timers/clocksource-switch.c | 6 +++---
  1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/timers/clocksource-switch.c b/tools/testing/selftests/timers/clocksource-switch.c
index c5264594064c8516..83faa4e354e389c2 100644
--- a/tools/testing/selftests/timers/clocksource-switch.c
+++ b/tools/testing/selftests/timers/clocksource-switch.c
@@ -156,8 +156,8 @@ int main(int argc, char **argv)
  	/* Check everything is sane before we start switching asynchronously */
  	if (do_sanity_check) {
  		for (i = 0; i < count; i++) {
-			printf("Validating clocksource %s\n",
-				clocksource_list[i]);
+			ksft_print_msg("Validating clocksource %s\n",
+					clocksource_list[i]);
  			if (change_clocksource(clocksource_list[i])) {
  				status = -1;
  				goto out;
@@ -169,7 +169,7 @@ int main(int argc, char **argv)
  		}
  	}
- printf("Running Asynchronous Switching Tests...\n");
+	ksft_print_msg("Running Asynchronous Switching Tests...\n");
  	pid = fork();
  	if (!pid)
  		return run_tests(runtime);

Applied to linux-kselftest next for Linux 6.14-rc1.

thanks,
-- Shuah




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