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authorJames Morse <james.morse@arm.com>2019-06-07 18:14:07 +0300
committerJonathan Corbet <corbet@lwn.net>2019-06-20 23:16:04 +0300
commit7c7a49958286fee9a2b18baffc9c626304a00843 (patch)
treeedc15d267e28e7d6e94195ba3a8a4a717ed29e55 /Documentation/x86
parenteb8ed28f024fe428a08ee6b7c4de6a31ff6610ad (diff)
downloadlinux-7c7a49958286fee9a2b18baffc9c626304a00843.tar.xz
Documentation: x86: Remove cdpl2 unspported statement and fix capitalisation
"L2 cache does not support code and data prioritization". This isn't true, elsewhere the document says it can be enabled with the cdpl2 mount option. While we're here, these sample strings have lower-case code/data, which isn't how the kernel exports them. Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/x86')
-rw-r--r--Documentation/x86/resctrl_ui.rst14
1 files changed, 10 insertions, 4 deletions
diff --git a/Documentation/x86/resctrl_ui.rst b/Documentation/x86/resctrl_ui.rst
index 066f94e53418..638cd987937d 100644
--- a/Documentation/x86/resctrl_ui.rst
+++ b/Documentation/x86/resctrl_ui.rst
@@ -418,16 +418,22 @@ L3 schemata file details (CDP enabled via mount option to resctrl)
When CDP is enabled L3 control is split into two separate resources
so you can specify independent masks for code and data like this::
- L3data:<cache_id0>=<cbm>;<cache_id1>=<cbm>;...
- L3code:<cache_id0>=<cbm>;<cache_id1>=<cbm>;...
+ L3DATA:<cache_id0>=<cbm>;<cache_id1>=<cbm>;...
+ L3CODE:<cache_id0>=<cbm>;<cache_id1>=<cbm>;...
L2 schemata file details
------------------------
-L2 cache does not support code and data prioritization, so the
-schemata format is always::
+CDP is supported at L2 using the 'cdpl2' mount option. The schemata
+format is either::
L2:<cache_id0>=<cbm>;<cache_id1>=<cbm>;...
+or
+
+ L2DATA:<cache_id0>=<cbm>;<cache_id1>=<cbm>;...
+ L2CODE:<cache_id0>=<cbm>;<cache_id1>=<cbm>;...
+
+
Memory bandwidth Allocation (default mode)
------------------------------------------