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Add ddb 'show timecounter' command.

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MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Konstantin Belousov 2021-01-18 09:25:36 +02:00
parent 448de00de5
commit 36bcc44e2c
1 changed files with 30 additions and 0 deletions
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30
sys/kern/kern_tc.c
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@ -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