From: "Sexton, Rory" <rory.sex...@intel.com> Signed-off-by: Nemanja Marjanovic <nemanja.marjano...@intel.com> Signed-off-by: Rory Sexton <rory.sex...@intel.com> Signed-off-by: David Hunt <david.h...@intel.com> --- examples/vm_power_manager/Makefile | 16 ++ examples/vm_power_manager/channel_monitor.c | 340 +++++++++++++++++++++++++++- examples/vm_power_manager/channel_monitor.h | 20 ++ 3 files changed, 370 insertions(+), 6 deletions(-)
diff --git a/examples/vm_power_manager/Makefile b/examples/vm_power_manager/Makefile index 59a9641..9cf20a2 100644 --- a/examples/vm_power_manager/Makefile +++ b/examples/vm_power_manager/Makefile @@ -54,6 +54,22 @@ CFLAGS += $(WERROR_FLAGS) LDLIBS += -lvirt +ifeq ($(CONFIG_RTE_BUILD_SHARED_LIB),y) + +ifeq ($(CONFIG_RTE_LIBRTE_IXGBE_PMD),y) +LDLIBS += -lrte_pmd_ixgbe +endif + +ifeq ($(CONFIG_RTE_LIBRTE_I40E_PMD),y) +LDLIBS += -lrte_pmd_i40e +endif + +ifeq ($(CONFIG_RTE_LIBRTE_BNXT_PMD),y) +LDLIBS += -lrte_pmd_bnxt +endif + +endif + # workaround for a gcc bug with noreturn attribute # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12603 ifeq ($(CONFIG_RTE_TOOLCHAIN_GCC),y) diff --git a/examples/vm_power_manager/channel_monitor.c b/examples/vm_power_manager/channel_monitor.c index ac40dac..7db98ad 100644 --- a/examples/vm_power_manager/channel_monitor.c +++ b/examples/vm_power_manager/channel_monitor.c @@ -41,13 +41,20 @@ #include <sys/types.h> #include <sys/epoll.h> #include <sys/queue.h> +#include <sys/time.h> #include <rte_log.h> #include <rte_memory.h> #include <rte_malloc.h> #include <rte_atomic.h> +#include <rte_cycles.h> +#include <rte_ethdev.h> +#ifdef RTE_LIBRTE_I40E_PMD +#include <rte_pmd_i40e.h> +#endif +#include <libvirt/libvirt.h> #include "channel_monitor.h" #include "channel_commands.h" #include "channel_manager.h" @@ -57,10 +64,17 @@ #define MAX_EVENTS 256 +#ifdef RTE_LIBRTE_I40E_PMD +uint64_t vsi_pkt_count_prev[384]; +uint64_t rdtsc_prev[384]; +#endif +double time_period_s = 1; static volatile unsigned run_loop = 1; static int global_event_fd; +static unsigned int policy_is_set; static struct epoll_event *global_events_list; +static struct policy policies[MAX_VMS]; void channel_monitor_exit(void) { @@ -68,6 +82,302 @@ void channel_monitor_exit(void) rte_free(global_events_list); } +static void +core_share(int pNo, int z, int x, int t) +{ + if (policies[pNo].core_share[z].pcpu == lvm_info[x].pcpus[t]) { + if (strcmp(policies[pNo].pkt.vm_name, + lvm_info[x].vm_name) != 0) { + policies[pNo].core_share[z].status = 1; + power_manager_scale_core_max( + policies[pNo].core_share[z].pcpu); + } + } +} + +static void +core_share_status(int pNo) +{ + + int noVms, noVcpus, z, x, t; + + get_all_vm(&noVms, &noVcpus); + + /* Reset Core Share Status. */ + for (z = 0; z < noVcpus; z++) + policies[pNo].core_share[z].status = 0; + + /* Foreach vcpu in a policy. */ + for (z = 0; z < policies[pNo].pkt.num_vcpu; z++) { + /* Foreach VM on the platform. */ + for (x = 0; x < noVms; x++) { + /* Foreach vcpu of VMs on platform. */ + for (t = 0; t < lvm_info[x].num_cpus; t++) + core_share(pNo, z, x, t); + } + } +} + +static void +get_pcpu_to_control(struct policy *pol) +{ + + /* Convert vcpu to pcpu. */ + struct vm_info info; + int pcpu, count; + uint64_t mask_u64b; + + RTE_LOG(INFO, CHANNEL_MONITOR, "Looking for pcpu for %s\n", + pol->pkt.vm_name); + get_info_vm(pol->pkt.vm_name, &info); + + for (count = 0; count < pol->pkt.num_vcpu; count++) { + mask_u64b = info.pcpu_mask[pol->pkt.vcpu_to_control[count]]; + for (pcpu = 0; mask_u64b; mask_u64b &= ~(1ULL << pcpu++)) { + if ((mask_u64b >> pcpu) & 1) + pol->core_share[count].pcpu = pcpu; + } + } +} + +#ifdef RTE_LIBRTE_I40E_PMD +static int +get_pfid(struct policy *pol) +{ + + int i, x, ret = 0, nb_ports; + + nb_ports = rte_eth_dev_count(); + for (i = 0; i < pol->pkt.nb_mac_to_monitor; i++) { + + for (x = 0; x < nb_ports; x++) { + ret = rte_pmd_i40e_query_vfid_by_mac(x, + pol->pkt.vfid[i]); + if (ret != -EINVAL) { + pol->port[i] = x; + break; + } + } + if (ret == -EINVAL) { + RTE_LOG(INFO, CHANNEL_MONITOR, + "Error with Policy. MAC not found on " + "attached ports "); + pol->enabled = 0; + return ret; + } + pol->pfid[i] = ret; + } + return 1; +} +#endif + +static int +update_policy(struct channel_packet *pkt) +{ + + unsigned int updated = 0; + + for (int i = 0; i < MAX_VMS; i++) { + if (strcmp(policies[i].pkt.vm_name, pkt->vm_name) == 0) { + policies[i].pkt = *pkt; + get_pcpu_to_control(&policies[i]); +#ifdef RTE_LIBRTE_I40E_PMD + if (get_pfid(&policies[i]) == -1) { + updated = 1; + break; + } +#endif + core_share_status(i); + policies[i].enabled = 1; + updated = 1; + } + } + if (!updated) { + for (int i = 0; i < MAX_VMS; i++) { + if (policies[i].enabled == 0) { + policies[i].pkt = *pkt; + get_pcpu_to_control(&policies[i]); +#ifdef RTE_LIBRTE_I40E_PMD + if (get_pfid(&policies[i]) == -1) + break; +#endif + core_share_status(i); + policies[i].enabled = 1; + break; + } + } + } + return 0; +} + +#ifdef RTE_LIBRTE_I40E_PMD +static uint64_t +get_pkt_diff(struct policy *pol) +{ + + uint64_t vsi_pkt_count, + vsi_pkt_total = 0, + vsi_pkt_count_prev_total = 0; + double rdtsc_curr, rdtsc_diff, diff; + int x; + struct rte_eth_stats vf_stats; + + for (x = 0; x < pol->pkt.nb_mac_to_monitor; x++) { + + /*Read vsi stats*/ + if (rte_pmd_i40e_get_vf_stats(x, pol->pfid[x], &vf_stats) == 0) + vsi_pkt_count = vf_stats.ipackets; + else + vsi_pkt_count = -1; + + vsi_pkt_total += vsi_pkt_count; + + vsi_pkt_count_prev_total += vsi_pkt_count_prev[pol->pfid[x]]; + vsi_pkt_count_prev[pol->pfid[x]] = vsi_pkt_count; + } + + rdtsc_curr = rte_rdtsc_precise(); + rdtsc_diff = rdtsc_curr - rdtsc_prev[pol->pfid[x-1]]; + rdtsc_prev[pol->pfid[x-1]] = rdtsc_curr; + + diff = (vsi_pkt_total - vsi_pkt_count_prev_total) * + ((double)rte_get_tsc_hz() / rdtsc_diff); + + return diff; +} + +static void +apply_traffic_profile(struct policy *pol) +{ + + int count; + uint64_t diff = 0; + + diff = get_pkt_diff(pol); + + RTE_LOG(INFO, CHANNEL_MONITOR, "Applying traffic profile\n"); + + if (diff >= (pol->pkt.traffic_policy.max_max_packet_thresh)) { + for (count = 0; count < pol->pkt.num_vcpu; count++) { + if (pol->core_share[count].status != 1) + power_manager_scale_core_max( + pol->core_share[count].pcpu); + } + } else if (diff >= (pol->pkt.traffic_policy.avg_max_packet_thresh)) { + for (count = 0; count < pol->pkt.num_vcpu; count++) { + if (pol->core_share[count].status != 1) + power_manager_scale_core_med( + pol->core_share[count].pcpu); + } + } else if (diff < (pol->pkt.traffic_policy.avg_max_packet_thresh)) { + for (count = 0; count < pol->pkt.num_vcpu; count++) { + if (pol->core_share[count].status != 1) + power_manager_scale_core_min( + pol->core_share[count].pcpu); + } + } +} +#endif + +static void +apply_time_profile(struct policy *pol) +{ + + int count, x; + struct timeval tv; + struct tm *ptm; + char time_string[40]; + + /* Obtain the time of day, and convert it to a tm struct. */ + gettimeofday(&tv, NULL); + ptm = localtime(&tv.tv_sec); + /* Format the date and time, down to a single second. */ + strftime(time_string, sizeof(time_string), "%Y-%m-%d %H:%M:%S", ptm); + + for (x = 0; x < HOURS; x++) { + + if (ptm->tm_hour == pol->pkt.timer_policy.busy_hours[x]) { + for (count = 0; count < pol->pkt.num_vcpu; count++) { + if (pol->core_share[count].status != 1) { + power_manager_scale_core_max( + pol->core_share[count].pcpu); + RTE_LOG(INFO, CHANNEL_MONITOR, + "Scaling up core %d to max\n", + pol->core_share[count].pcpu); + } + } + break; + } else if (ptm->tm_hour == + pol->pkt.timer_policy.quiet_hours[x]) { + for (count = 0; count < pol->pkt.num_vcpu; count++) { + if (pol->core_share[count].status != 1) { + power_manager_scale_core_min( + pol->core_share[count].pcpu); + RTE_LOG(INFO, CHANNEL_MONITOR, + "Scaling down core %d to min\n", + pol->core_share[count].pcpu); + } + } + break; +#ifdef RTE_LIBRTE_I40E_PMD + } else if (ptm->tm_hour == + pol->pkt.timer_policy.hours_to_use_traffic_profile[x]) { + apply_traffic_profile(pol); + break; + } +#else + } +#endif + } +} + +static void +apply_workload_profile(struct policy *pol) +{ + + int count; + + if (pol->pkt.workload == HIGH) { + for (count = 0; count < pol->pkt.num_vcpu; count++) { + if (pol->core_share[count].status != 1) + power_manager_scale_core_max( + pol->core_share[count].pcpu); + } + } else if (pol->pkt.workload == MEDIUM) { + for (count = 0; count < pol->pkt.num_vcpu; count++) { + if (pol->core_share[count].status != 1) + power_manager_scale_core_med( + pol->core_share[count].pcpu); + } + } else if (pol->pkt.workload == LOW) { + for (count = 0; count < pol->pkt.num_vcpu; count++) { + if (pol->core_share[count].status != 1) + power_manager_scale_core_min( + pol->core_share[count].pcpu); + } + } +} + +static void +apply_policy(struct policy *pol) +{ + + struct channel_packet *pkt = &pol->pkt; + + /*Check policy to use*/ +#ifdef RTE_LIBRTE_I40E_PMD + if (pkt->policy_to_use == TRAFFIC) + apply_traffic_profile(pol); + else if (pkt->policy_to_use == TIME) +#else + if (pkt->policy_to_use == TIME) +#endif + apply_time_profile(pol); + else if (pkt->policy_to_use == WORKLOAD) + apply_workload_profile(pol); +} + + static int process_request(struct channel_packet *pkt, struct channel_info *chan_info) { @@ -140,6 +450,13 @@ process_request(struct channel_packet *pkt, struct channel_info *chan_info) } } + + if (pkt->command == PKT_POLICY) { + RTE_LOG(INFO, CHANNEL_MONITOR, "\nProcessing Policy request from Guest\n"); + update_policy(pkt); + policy_is_set = 1; + } + /* Return is not checked as channel status may have been set to DISABLED * from management thread */ @@ -209,9 +526,10 @@ run_channel_monitor(void) struct channel_info *chan_info = (struct channel_info *) global_events_list[i].data.ptr; if ((global_events_list[i].events & EPOLLERR) || - (global_events_list[i].events & EPOLLHUP)) { + (global_events_list[i].events & EPOLLHUP)) { RTE_LOG(DEBUG, CHANNEL_MONITOR, "Remote closed connection for " - "channel '%s'\n", chan_info->channel_path); + "channel '%s'\n", + chan_info->channel_path); remove_channel(&chan_info); continue; } @@ -223,14 +541,17 @@ run_channel_monitor(void) int buffer_len = sizeof(pkt); while (buffer_len > 0) { - n_bytes = read(chan_info->fd, buffer, buffer_len); + n_bytes = read(chan_info->fd, + buffer, buffer_len); if (n_bytes == buffer_len) break; if (n_bytes == -1) { err = errno; - RTE_LOG(DEBUG, CHANNEL_MONITOR, "Received error on " - "channel '%s' read: %s\n", - chan_info->channel_path, strerror(err)); + RTE_LOG(DEBUG, CHANNEL_MONITOR, + "Received error on " + "channel '%s' read: %s\n", + chan_info->channel_path, + strerror(err)); remove_channel(&chan_info); break; } @@ -241,5 +562,12 @@ run_channel_monitor(void) process_request(&pkt, chan_info); } } + rte_delay_us(time_period_s*1000000); + if (policy_is_set) { + for (int j = 0; j < MAX_VMS; j++) { + if (policies[j].enabled == 1) + apply_policy(&policies[j]); + } + } } } diff --git a/examples/vm_power_manager/channel_monitor.h b/examples/vm_power_manager/channel_monitor.h index c138607..11f5f75 100644 --- a/examples/vm_power_manager/channel_monitor.h +++ b/examples/vm_power_manager/channel_monitor.h @@ -35,6 +35,26 @@ #define CHANNEL_MONITOR_H_ #include "channel_manager.h" +#include "channel_commands.h" + +struct core_share { + unsigned int pcpu; + /* + * 1 CORE SHARE + * 0 NOT SHARED + */ + int status; +}; + +struct policy { + struct channel_packet pkt; +#ifdef RTE_LIBRTE_I40E_PMD + uint32_t pfid[MAX_VFS]; + uint32_t port[MAX_VFS]; +#endif + unsigned int enabled; + struct core_share core_share[MAX_VCPU_PER_VM]; +}; #ifdef __cplusplus extern "C" { -- 2.7.4
