linux-kernel - [PATCH 1/4] locking/osq_lock: The Kconfig for dynamic numa-aware osq lock.

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Message-ID: <20240914085327.32912-2-yongli-oc@zhaoxin.com>
Date: Sat, 14 Sep 2024 16:53:24 +0800
From: yongli-oc <yongli-oc@...oxin.com>
To: <peterz@...radead.org>, <mingo@...hat.com>, <will@...nel.org>,
	<longman@...hat.com>, <boqun.feng@...il.com>
CC: <linux-kernel@...r.kernel.org>, <yongli@...oxin.com>,
	<louisqi@...oxin.com>, <cobechen@...oxin.com>, <jiangbowang@...oxin.com>
Subject: [PATCH 1/4] locking/osq_lock: The Kconfig for dynamic numa-aware osq lock.

The make menu to choose if compile the dynamic numa-aware osq lock
or not, default is N.

Signed-off-by: yongli-oc <yongli-oc@...oxin.com>
---
 kernel/Kconfig.numalocks | 17 +++++++++++++++++
 lib/Kconfig.debug        |  2 ++
 2 files changed, 19 insertions(+)
 create mode 100644 kernel/Kconfig.numalocks

diff --git a/kernel/Kconfig.numalocks b/kernel/Kconfig.numalocks
new file mode 100644
index 000000000000..feb1751b637c
--- /dev/null
+++ b/kernel/Kconfig.numalocks
@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+menu "NUMA Lock Supporting (OSQ)"
+
+config LOCK_SPIN_ON_OWNER_NUMA
+	bool "Enable dynamic numa-aware osq lock"
+	depends on LOCK_SPIN_ON_OWNER && X86_64
+	default n
+	help
+	  According the cpu numa architecture, the numa-aware lock
+	  always unlocks the process waiting on the same numa node
+	  first. It is different from the kernel inbox osq_lock.
+	  The dynamic numa-aware osq lock switchies between osq_lock and
+	  numa-aware lock automatically, according contention level.
+	  Enable: echo 1 > /proc/zx_numa_lock/dynamic_enable.
+
+endmenu #  NUMA Lock Supporting
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 27539c2626bf..eb2314d47420 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1337,6 +1337,8 @@ config DEBUG_PREEMPT
 	  depending on workload as it triggers debugging routines for each
 	  this_cpu operation. It should only be used for debugging purposes.
 
+source "kernel/Kconfig.numalocks"
+
 menu "Lock Debugging (spinlocks, mutexes, etc...)"
 
 config LOCK_DEBUGGING_SUPPORT
-- 
2.34.1