Put some fine-tuning tips in this file:
1.) rodata=noalias
2.) slab_strict_numa
3.) CONFIG_SCHED_CLUSTER
We can add more tips in future.
Signed-off-by: Huang Shijie <shijie@xxxxxxxxxxxxxxxxxxxxxx>
---
Add the comment from Christoph.
---
Documentation/arch/arm64/fine-tuning-tips.rst | 25 +++++++++++++++++++
Documentation/arch/arm64/index.rst | 1 +
2 files changed, 26 insertions(+)
create mode 100644 Documentation/arch/arm64/fine-tuning-tips.rst
diff --git a/Documentation/arch/arm64/fine-tuning-tips.rst b/Documentation/arch/arm64/fine-tuning-tips.rst
new file mode 100644
index 000000000000..df67a5ac87b9
--- /dev/null
+++ b/Documentation/arch/arm64/fine-tuning-tips.rst
@@ -0,0 +1,25 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+================
+fine-tuning tips
+================
+
+This file contains some fine-tuning tips for arm64 machines.
+These tips do not gurantee that you can get better performance,
+but you can try them with your workload.
+
+rodata=noalias
+----------------
+It can provide us more block mappings and contiguous hits
+to map the linear region which minimizes the TLB footprint.
+
+slab_strict_numa
+----------------
+In NUMA, it will provide the local memory allocation by SLUB.
+Slab objects will be placed individually according to memory policies.
+Increases object locality which is useful for NUMA systems using SLC caches.
+
+CONFIG_SCHED_CLUSTER
+----------------
+Some arm64 machines have cpu core clusters, enable it may
+helps you get better performance.
diff --git a/Documentation/arch/arm64/index.rst b/Documentation/arch/arm64/index.rst
index 6a012c98bdcd..36d1ef09bd71 100644
--- a/Documentation/arch/arm64/index.rst
+++ b/Documentation/arch/arm64/index.rst
@@ -16,6 +16,7 @@ ARM64 Architecture
cpu-feature-registers
cpu-hotplug
elf_hwcaps
+ fine-tuning-tips
gcs
hugetlbpage
kdump
--
2.40.1
