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trace: save bootup timestamp

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Find epoch_sec, epoch_nsec and uptime_ticks time information
on eal_trace_init()/bootup to derive the time in the trace.

Signed-off-by: Jerin Jacob <jerinj@marvell.com>
Acked-by: David Marchand <david.marchand@redhat.com>
This commit is contained in:
Jerin Jacob 2020-04-23 00:33:23 +05:30 committed by David Marchand
parent 321dd5f8fa
commit 185b7dc1d4
3 changed files with 30 additions and 0 deletions
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3
lib/librte_eal/common/eal_common_trace.c
View File

@ -61,6 +61,9 @@ eal_trace_init(void)
if (trace_mkdir())
goto fail;
/* Save current epoch timestamp for future use */
if (trace_epoch_time_save() < 0)
goto fail;
rte_trace_mode_set(trace.mode);

22
lib/librte_eal/common/eal_common_trace_utils.c
View File

@ -98,6 +98,28 @@ trace_session_name_generate(char *trace_dir)
return -rte_errno;
}
int
trace_epoch_time_save(void)
{
struct trace *trace = trace_obj_get();
struct timespec epoch = { 0, 0 };
uint64_t avg, start, end;
start = rte_get_tsc_cycles();
if (clock_gettime(CLOCK_REALTIME, &epoch) < 0) {
trace_err("failed to get the epoch time");
return -1;
}
end = rte_get_tsc_cycles();
avg = (start + end) >> 1;
trace->epoch_sec = (uint64_t) epoch.tv_sec;
trace->epoch_nsec = (uint64_t) epoch.tv_nsec;
trace->uptime_ticks = avg;
return 0;
}
static int
trace_dir_default_path_get(char *dir_path)
{

5
lib/librte_eal/common/eal_trace.h
View File

@ -5,6 +5,7 @@
#ifndef __EAL_TRACE_H
#define __EAL_TRACE_H
#include <rte_cycles.h>
#include <rte_spinlock.h>
#include <rte_trace.h>
#include <rte_trace_point.h>
@ -37,6 +38,9 @@ struct trace {
rte_uuid_t uuid;
uint32_t buff_len;
uint32_t nb_trace_points;
uint64_t epoch_sec;
uint64_t epoch_nsec;
uint64_t uptime_ticks;
rte_spinlock_t lock;
};
@ -59,6 +63,7 @@ struct trace_point_head *trace_list_head_get(void);
bool trace_has_duplicate_entry(void);
void trace_uuid_generate(void);
int trace_mkdir(void);
int trace_epoch_time_save(void);
/* EAL interface */
int eal_trace_init(void);