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examples/vm_power: send confirmation cmd to guest

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Use new guest channel API to send confirmation
message for received power command.

Signed-off-by: Marcin Hajkowski <marcinx.hajkowski@intel.com>
Tested-by: David Hunt <david.hunt@intel.com>
Acked-by: Lee Daly <lee.daly@intel.com>
This commit is contained in:
Marcin Hajkowski 2019-09-27 09:42:16 +01:00 committed by Thomas Monjalon
parent a21f995b53
commit 0de94bcac7
1 changed files with 62 additions and 6 deletions
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68
examples/vm_power_manager/channel_monitor.c
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@ -671,6 +671,41 @@ apply_policy(struct policy *pol)
apply_workload_profile(pol);
}
static int
write_binary_packet(struct channel_packet *pkt, struct channel_info *chan_info)
{
int ret, buffer_len = sizeof(*pkt);
void *buffer = pkt;
if (chan_info->fd < 0) {
RTE_LOG(ERR, CHANNEL_MONITOR, "Channel is not connected\n");
return -1;
}
while (buffer_len > 0) {
ret = write(chan_info->fd, buffer, buffer_len);
if (ret == -1) {
if (errno == EINTR)
continue;
RTE_LOG(ERR, CHANNEL_MONITOR, "Write function failed due to %s.\n",
strerror(errno));
return -1;
}
buffer = (char *)buffer + ret;
buffer_len -= ret;
}
return 0;
}
static int
send_ack_for_received_cmd(struct channel_packet *pkt,
struct channel_info *chan_info,
uint32_t command)
{
pkt->command = command;
return write_binary_packet(pkt, chan_info);
}
static int
process_request(struct channel_packet *pkt, struct channel_info *chan_info)
{
@ -694,33 +729,54 @@ process_request(struct channel_packet *pkt, struct channel_info *chan_info)
RTE_LOG(DEBUG, CHANNEL_MONITOR, "Processing requested cmd for cpu:%d\n",
core_num);
bool valid_unit = true;
int scale_res;
switch (pkt->unit) {
case(CPU_POWER_SCALE_MIN):
power_manager_scale_core_min(core_num);
scale_res = power_manager_scale_core_min(core_num);
break;
case(CPU_POWER_SCALE_MAX):
power_manager_scale_core_max(core_num);
scale_res = power_manager_scale_core_max(core_num);
break;
case(CPU_POWER_SCALE_DOWN):
power_manager_scale_core_down(core_num);
scale_res = power_manager_scale_core_down(core_num);
break;
case(CPU_POWER_SCALE_UP):
power_manager_scale_core_up(core_num);
scale_res = power_manager_scale_core_up(core_num);
break;
case(CPU_POWER_ENABLE_TURBO):
power_manager_enable_turbo_core(core_num);
scale_res = power_manager_enable_turbo_core(core_num);
break;
case(CPU_POWER_DISABLE_TURBO):
power_manager_disable_turbo_core(core_num);
scale_res = power_manager_disable_turbo_core(core_num);
break;
default:
valid_unit = false;
break;
}
if (valid_unit) {
ret = send_ack_for_received_cmd(pkt,
chan_info,
scale_res > 0 ?
CPU_POWER_CMD_ACK :
CPU_POWER_CMD_NACK);
if (ret < 0)
RTE_LOG(DEBUG, CHANNEL_MONITOR, "Error during sending ack command.\n");
} else
RTE_LOG(DEBUG, CHANNEL_MONITOR, "Unexpected unit type.\n");
}
if (pkt->command == PKT_POLICY) {
RTE_LOG(INFO, CHANNEL_MONITOR, "Processing policy request %s\n",
pkt->vm_name);
int ret = send_ack_for_received_cmd(pkt,
chan_info,
CPU_POWER_CMD_ACK);
if (ret < 0)
RTE_LOG(DEBUG, CHANNEL_MONITOR, "Error during sending ack command.\n");
update_policy(pkt);
policy_is_set = 1;
}