linux-kernel - [PATCH V3] arm64: tegra: add topology data for Tegra194 cpu

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 13 Feb 2019 08:33:42 -0800
From:   Bo Yan <byan@...dia.com>
To:     <thierry.reding@...il.com>, <jonathanh@...dia.com>
CC:     <robh+dt@...nel.org>, <mark.rutland@....com>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Bo Yan <byan@...dia.com>
Subject: [PATCH V3] arm64: tegra: add topology data for Tegra194 cpu

The xavier CPU architecture includes 8 CPU cores organized in
4 clusters. Add cpu-map data for topology initialization, this
fixes the topology information in
/sys/devices/system/cpu/cpu[n]/topology

Signed-off-by: Bo Yan <byan@...dia.com>
---
V3: Replaced phandles with full path to CPU node
V2: remove cache nodes, add topology data only

 arch/arm64/boot/dts/nvidia/tegra194.dtsi | 42 ++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index 6dfa1ca..708d20c 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -870,6 +870,48 @@
 		#address-cells = <1>;
 		#size-cells = <0>;
 
+		cpu-map {
+			cluster0 {
+				core0 {
+					cpu = <&{/cpus/cpu@0}>;
+				};
+
+				core1 {
+					cpu = <&{/cpus/cpu@1}>;
+				};
+			};
+
+			cluster1 {
+				core0 {
+					cpu = <&{/cpus/cpu@2}>;
+				};
+
+				core1 {
+					cpu = <&{/cpus/cpu@3}>;
+				};
+			};
+
+			cluster2 {
+				core0 {
+					cpu = <&{/cpus/cpu@4}>;
+				};
+
+				core1 {
+					cpu = <&{/cpus/cpu@5}>;
+				};
+			};
+
+			cluster3 {
+				core0 {
+					cpu = <&{/cpus/cpu@6}>;
+				};
+
+				core1 {
+					cpu = <&{/cpus/cpu@7}>;
+				};
+			};
+		};
+
 		cpu@0 {
 			compatible = "nvidia,tegra194-carmel", "arm,armv8";
 			device_type = "cpu";
-- 
2.7.4