Compress HMAT latency and bandwidth raw data into uint16_t data, which can be stored in HMAT table.
Suggested-by: Igor Mammedov <imamm...@redhat.com> Signed-off-by: Tao Xu <tao3...@intel.com> --- No changes in v15. Changes in v14: - Convert latency from ns to ps, because ACPI 6.3 HMAT table use ps as minimum unit --- hw/core/numa.c | 59 +++++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 58 insertions(+), 1 deletion(-) diff --git a/hw/core/numa.c b/hw/core/numa.c index f391760c20..523dd80822 100644 --- a/hw/core/numa.c +++ b/hw/core/numa.c @@ -483,6 +483,47 @@ static void complete_init_numa_distance(MachineState *ms) } } +static void calculate_hmat_entry_list(HMAT_LB_Info *hmat_lb, int num_nodes) +{ + int i, index; + uint16_t *entry_list; + uint64_t base; + GArray *lb_data_list; + HMAT_LB_Data *lb_data; + + if (hmat_lb->data_type <= HMAT_LB_DATA_WRITE_LATENCY) { + base = hmat_lb->base_latency; + lb_data_list = hmat_lb->latency; + } else { + base = hmat_lb->base_bandwidth; + lb_data_list = hmat_lb->bandwidth; + } + + entry_list = g_malloc0(lb_data_list->len * sizeof(uint16_t)); + for (i = 0; i < lb_data_list->len; i++) { + lb_data = &g_array_index(lb_data_list, HMAT_LB_Data, i); + index = lb_data->initiator * num_nodes + lb_data->target; + if (entry_list[index]) { + error_report("Duplicate configuration of the latency for " + "initiator=%d and target=%d.", lb_data->initiator, + lb_data->target); + exit(1); + } + + entry_list[index] = (uint16_t)(lb_data->rawdata / base); + } + + if (hmat_lb->data_type <= HMAT_LB_DATA_WRITE_LATENCY) { + /* Convert latency base from nanoseconds to picosecond */ + hmat_lb->base_latency = base * 1000; + hmat_lb->entry_latency = entry_list; + } else { + /* Convert bandwidth base from Byte to Megabyte */ + hmat_lb->base_bandwidth = base / MiB; + hmat_lb->entry_bandwidth = entry_list; + } +} + void numa_legacy_auto_assign_ram(MachineClass *mc, NodeInfo *nodes, int nb_nodes, ram_addr_t size) { @@ -521,9 +562,10 @@ void numa_default_auto_assign_ram(MachineClass *mc, NodeInfo *nodes, void numa_complete_configuration(MachineState *ms) { - int i; + int i, hierarchy, type; MachineClass *mc = MACHINE_GET_CLASS(ms); NodeInfo *numa_info = ms->numa_state->nodes; + HMAT_LB_Info *numa_hmat_lb; /* * If memory hotplug is enabled (slots > 0) but without '-numa' @@ -620,6 +662,21 @@ void numa_complete_configuration(MachineState *ms) /* Validation succeeded, now fill in any missing distances. */ complete_init_numa_distance(ms); } + + if (ms->numa_state->hmat_enabled) { + for (hierarchy = HMAT_LB_MEM_MEMORY; + hierarchy <= HMAT_LB_MEM_CACHE_3RD_LEVEL; hierarchy++) { + for (type = HMAT_LB_DATA_ACCESS_LATENCY; + type <= HMAT_LB_DATA_WRITE_BANDWIDTH; type++) { + numa_hmat_lb = ms->numa_state->hmat_lb[hierarchy][type]; + + if (numa_hmat_lb) { + calculate_hmat_entry_list(numa_hmat_lb, + ms->numa_state->num_nodes); + } + } + } + } } } -- 2.20.1