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authorKyösti Mälkki <kyosti.malkki@gmail.com>2019-11-01 09:12:34 +0200
committerKyösti Mälkki <kyosti.malkki@gmail.com>2019-11-03 06:17:20 +0000
commit463ad5169dfe958637c7514149bd91630ee07f7e (patch)
tree18885045c46194d22b384a223962207ed6078005 /src
parentddd6ca78a1ec57d8549393124a3e5fbad0cdf362 (diff)
downloadcoreboot-463ad5169dfe958637c7514149bd91630ee07f7e.tar.xz
boot_state: Reduce precision of reported times
When diffing boot logs, lines reporting times spent in each boot_state always get highlighed due the little fluctuation in microsecond-scale. Reduce the logged precision to milliseconds to avoid that. Change-Id: I7a27d6c250d8432131f30e9a4869cb45ad75d9fd Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/36528 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src')
-rw-r--r--src/lib/hardwaremain.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/src/lib/hardwaremain.c b/src/lib/hardwaremain.c
index 2ff2b8c874..51ff330d84 100644
--- a/src/lib/hardwaremain.c
+++ b/src/lib/hardwaremain.c
@@ -23,6 +23,7 @@
#include <bootstate.h>
#include <console/console.h>
#include <console/post_codes.h>
+#include <commonlib/helpers.h>
#include <cbmem.h>
#include <version.h>
#include <device/device.h>
@@ -256,7 +257,12 @@ static void bs_report_time(struct boot_state *state)
run_time = mono_time_diff_microseconds(&samples[1], &samples[2]);
exit_time = mono_time_diff_microseconds(&samples[2], &samples[3]);
- printk(BIOS_DEBUG, "BS: %s times (us): entry %ld run %ld exit %ld\n",
+ /* Report with millisecond precision to reduce log diffs. */
+ entry_time = DIV_ROUND_CLOSEST(entry_time, USECS_PER_MSEC);
+ run_time = DIV_ROUND_CLOSEST(run_time, USECS_PER_MSEC);
+ exit_time = DIV_ROUND_CLOSEST(exit_time, USECS_PER_MSEC);
+
+ printk(BIOS_DEBUG, "BS: %s times (ms): entry %ld run %ld exit %ld\n",
state->name, entry_time, run_time, exit_time);
}
#else