The branch main has been updated by kib:
URL:
https://cgit.FreeBSD.org/src/commit/?id=36bcc44e2c578dd016940c9c5068c348e1d77f99
commit 36bcc44e2c578dd016940c9c5068c348e1d77f99
Author: Konstantin Belousov <k...@freebsd.org>
AuthorDate: 2021-01-18 07:25:36 +0000
Commit: Konstantin Belousov <k...@freebsd.org>
CommitDate: 2021-01-18 07:51:48 +0000
Add ddb 'show timecounter' command.
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
---
sys/kern/kern_tc.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/sys/kern/kern_tc.c b/sys/kern/kern_tc.c
index cc3219a885ab..07841fd5ca0e 100644
--- a/sys/kern/kern_tc.c
+++ b/sys/kern/kern_tc.c
@@ -2187,3 +2187,33 @@ tc_fill_vdso_timehands32(struct vdso_timehands32
*vdso_th32)
return (enabled);
}
#endif
+
+#include "opt_ddb.h"
+#ifdef DDB
+#include <ddb/ddb.h>
+
+DB_SHOW_COMMAND(timecounter, db_show_timecounter)
+{
+ struct timehands *th;
+ struct timecounter *tc;
+ u_int val1, val2;
+
+ th = timehands;
+ tc = th->th_counter;
+ val1 = tc->tc_get_timecount(tc);
+ __compiler_membar();
+ val2 = tc->tc_get_timecount(tc);
+
+ db_printf("timecounter %p %s\n", tc, tc->tc_name);
+ db_printf(" mask %#x freq %ju qual %d flags %#x priv %p\n",
+ tc->tc_counter_mask, (uintmax_t)tc->tc_frequency, tc->tc_quality,
+ tc->tc_flags, tc->tc_priv);
+ db_printf(" val %#x %#x\n", val1, val2);
+ db_printf("timehands adj %#jx scale %#jx ldelta %d off_cnt %d gen %d\n",
+ (uintmax_t)th->th_adjustment, (uintmax_t)th->th_scale,
+ th->th_large_delta, th->th_offset_count, th->th_generation);
+ db_printf(" offset %jd %jd boottime %jd %jd\n",
+ (intmax_t)th->th_offset.sec, (uintmax_t)th->th_offset.frac,
+ (intmax_t)th->th_boottime.sec, (uintmax_t)th->th_boottime.frac);
+}
+#endif
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