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[PATCH v14 06/11] numa: Calculate hmat latency and bandwidth entry list
From: |
Tao Xu |
Subject: |
[PATCH v14 06/11] numa: Calculate hmat latency and bandwidth entry list |
Date: |
Mon, 28 Oct 2019 15:52:15 +0800 |
Compress HMAT latency and bandwidth raw data into uint16_t data,
which can be stored in HMAT table.
Suggested-by: Igor Mammedov <address@hidden>
Signed-off-by: Tao Xu <address@hidden>
---
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
- [PATCH v14 00/11] Build ACPI Heterogeneous Memory Attribute Table (HMAT), Tao Xu, 2019/10/28
- [PATCH v14 01/11] util/cutils: Add qemu_strtotime_ns(), Tao Xu, 2019/10/28
- [PATCH v14 02/11] qapi: Add builtin type time, Tao Xu, 2019/10/28
- [PATCH v14 03/11] tests: Add test for QAPI builtin type time, Tao Xu, 2019/10/28
- [PATCH v14 04/11] numa: Extend CLI to provide initiator information for numa nodes, Tao Xu, 2019/10/28
- [PATCH v14 06/11] numa: Calculate hmat latency and bandwidth entry list,
Tao Xu <=
- [PATCH v14 05/11] numa: Extend CLI to provide memory latency and bandwidth information, Tao Xu, 2019/10/28
- [PATCH v14 07/11] numa: Extend CLI to provide memory side cache information, Tao Xu, 2019/10/28
- [PATCH v14 08/11] hmat acpi: Build Memory Proximity Domain Attributes Structure(s), Tao Xu, 2019/10/28
- [PATCH v14 09/11] hmat acpi: Build System Locality Latency and Bandwidth Information Structure(s), Tao Xu, 2019/10/28
- [PATCH v14 10/11] hmat acpi: Build Memory Side Cache Information Structure(s), Tao Xu, 2019/10/28
- [PATCH v14 11/11] tests/bios-tables-test: add test cases for ACPI HMAT, Tao Xu, 2019/10/28
- Re: [PATCH v14 00/11] Build ACPI Heterogeneous Memory Attribute Table (HMAT), no-reply, 2019/10/28