The tracecmd_time_sync struct holds the timestamp synchronization
context, used by the timestamp synchronization plugins. Guest CPU count and
PID of the host task, running the guest, is important information which
may be needed by the plugins.
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@xxxxxxxxx>
---
lib/trace-cmd/include/private/trace-cmd-private.h | 2 ++
tracecmd/trace-tsync.c | 7 ++++++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/lib/trace-cmd/include/private/trace-cmd-private.h b/lib/trace-cmd/include/private/trace-cmd-private.h
index 685abf13..ce7d87be 100644
--- a/lib/trace-cmd/include/private/trace-cmd-private.h
+++ b/lib/trace-cmd/include/private/trace-cmd-private.h
@@ -432,6 +432,8 @@ struct tracecmd_time_sync {
char *clock_str;
struct tracecmd_msg_handle *msg_handle;
void *context;
+ int guest_pid;
+ int vcpu_count;
};
void tracecmd_tsync_init(void);
diff --git a/tracecmd/trace-tsync.c b/tracecmd/trace-tsync.c
index ef20651b..3d67f5af 100644
--- a/tracecmd/trace-tsync.c
+++ b/tracecmd/trace-tsync.c
@@ -77,6 +77,7 @@ int tracecmd_host_tsync(struct buffer_instance *instance,
{
struct tracecmd_msg_handle *msg_handle = NULL;
cpu_set_t *pin_mask = NULL;
+ struct trace_guest *guest;
pthread_attr_t attrib;
size_t mask_size = 0;
int ret;
@@ -84,7 +85,11 @@ int tracecmd_host_tsync(struct buffer_instance *instance,
if (!instance->tsync.proto_name)
return -1;
-
+ guest = get_guest_by_cid(instance->cid);
+ if (guest == NULL)
+ return -1;
+ instance->tsync.guest_pid = guest->pid;
+ instance->tsync.vcpu_count = guest->cpu_max;
fd = trace_open_vsock(instance->cid, tsync_port);
if (fd < 0) {
ret = -1;
--
2.29.2
|