linux-kernel - [PATCH] riscv: Kconfig: enable SCHED

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Message-Id: <20230310110336.970985-1-suagrfillet@gmail.com>
Date:   Fri, 10 Mar 2023 19:03:36 +0800
From:   Song Shuai <suagrfillet@...il.com>
To:     paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, conor@...nel.org
Cc:     linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Song Shuai <suagrfillet@...il.com>
Subject: [PATCH] riscv: Kconfig: enable SCHED_MC kconfig

RISC-V now builds the sched domain based on the simple possible map.

Enable SCHED_MC to make the building based on cpu_coregroup_mask()
which also takes care of the NUMA and cores with LLC.

Signed-off-by: Song Shuai <suagrfillet@...il.com>
---
 arch/riscv/Kconfig | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index c5e42cc37604..5b9fdc1a619a 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -320,6 +320,14 @@ config SMP
 
 	  If you don't know what to do here, say N.
 
+config SCHED_MC
+	bool "Multi-core scheduler support"
+	depends on SMP
+	help
+	  Multi-core scheduler support improves the CPU scheduler's decision
+	  making when dealing with multi-core CPU chips at a cost of slightly
+	  increased overhead in some places. If unsure say N here.
+
 config NR_CPUS
 	int "Maximum number of CPUs (2-512)"
 	depends on SMP
-- 
2.20.1