diff mbox series

[v4,2/4] arch_topology: Support SMT control for OF based system

Message ID 20231121092602.47792-3-yangyicong@huawei.com (mailing list archive)
State New, archived
Headers show
Series Support SMT control on arm64 | expand

Commit Message

Yicong Yang Nov. 21, 2023, 9:26 a.m. UTC 
From: Yicong Yang <yangyicong@hisilicon.com>

On building the topology from the devicetree, we've already
gotten the SMT thread number of each core. Update the largest
SMT thread number to enable the SMT control.

Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
---
 drivers/base/arch_topology.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index 3ed6bdf9460e..252a436e0c1b 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -526,6 +526,13 @@  static int __init parse_core(struct device_node *core, int package_id,
 		i++;
 	} while (t);
 
+	/*
+	 * We've already gotten threads number in this core, update the SMT
+	 * threads number when necessary.
+	 */
+	if (i > topology_smt_get_num_threads())
+		topology_smt_set_num_threads(i);
+
 	cpu = get_cpu_for_node(core);
 	if (cpu >= 0) {
 		if (!leaf) {