Reformat the output of the `adjtick` test in tools/testing/selftests/timers/ to display results in a clean tabular format.

Previously, the output was printed in a free-form manner like this:

Each iteration takes about 15 seconds Estimating tick (act: 9000 usec, -100000 ppm): 9000 usec, -100000 ppm [OK]

This format made it hard to visually compare values across iterations or parse results in scripts.

The new output is aligned in a table with clearly labeled columns:

Each iteration takes about 15 seconds --------------------------------------------------------------- | Requested (usec) | Expected (ppm) | Measured (ppm) | Result | |------------------|----------------|----------------|---------| | 9000 | -100000 | -100001 | [ OK ] | | 9250 | -75000 | -75000 | [ OK ] | ... ---------------------------------------------------------------

This improves readability, consistency, and log usability for automated tooling.

Signed-off-by: Vishal Parmar vishistriker@gmail.com --- tools/testing/selftests/timers/adjtick.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/tools/testing/selftests/timers/adjtick.c b/tools/testing/selftests/timers/adjtick.c index 777d9494b683..b6b3de04d6ae 100644 --- a/tools/testing/selftests/timers/adjtick.c +++ b/tools/testing/selftests/timers/adjtick.c @@ -128,18 +128,18 @@ int check_tick_adj(long tickval) sleep(1);

ppm = ((long long)tickval * MILLION)/systick - MILLION; - printf("Estimating tick (act: %ld usec, %lld ppm): ", tickval, ppm); + printf(" | %-16ld | %-14lld |", tickval, ppm);

eppm = get_ppm_drift(); - printf("%lld usec, %lld ppm", systick + (systick * eppm / MILLION), eppm); + printf(" %-14lld |", eppm); fflush(stdout);

tx1.modes = 0; adjtimex(&tx1);

if (tx1.offset || tx1.freq || tx1.tick != tickval) { - printf(" [ERROR]\n"); - printf("\tUnexpected adjtimex return values, make sure ntpd is not running.\n"); + printf(" [ERROR] |\n"); + printf(" Unexpected adjtimex return values, make sure ntpd is not running.\n"); return -1; }

@@ -153,10 +153,10 @@ int check_tick_adj(long tickval) * room for interruptions during the measurement. */ if (llabs(eppm - ppm) > 100) { - printf(" [FAILED]\n"); + printf(" [FAILED]\n"); return -1; } - printf(" [OK]\n"); + printf(" [ OK ] |\n");

return 0; } @@ -175,7 +175,10 @@ int main(int argc, char **argv) return -1; }

- printf("Each iteration takes about 15 seconds\n"); + printf("\n Each iteration takes about 15 seconds\n"); + printf(" ---------------------------------------------------------------\n"); + printf(" | Requested (usec) | Expected (ppm) | Measured (ppm) | Result |\n"); + printf(" |------------------|----------------|----------------|---------|\n");

systick = sysconf(_SC_CLK_TCK); systick = USEC_PER_SEC/sysconf(_SC_CLK_TCK); @@ -188,6 +191,7 @@ int main(int argc, char **argv) break; } } + printf(" ---------------------------------------------------------------\n");

/* Reset things to zero */ tx1.modes = ADJ_TICK;