linux-kernel - [PATCH 3/4] Documentation/admin-guide: Change doc for bus lock ratelimit

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Date:   Mon, 19 Apr 2021 21:49:57 +0000
From:   Fenghua Yu <fenghua.yu@...el.com>
To:     "Thomas Gleixner" <tglx@...utronix.de>,
        "Ingo Molnar" <mingo@...hat.com>, "Borislav Petkov" <bp@...en8.de>,
        "Peter Zijlstra" <peterz@...radead.org>,
        "Randy Dunlap" <rdunlap@...radead.org>,
        "Tony Luck" <tony.luck@...el.com>,
        "Xiaoyao Li " <xiaoyao.li@...el.com>,
        "Ravi V Shankar" <ravi.v.shankar@...el.com>
Cc:     "linux-kernel" <linux-kernel@...r.kernel.org>,
        "x86" <x86@...nel.org>, Fenghua Yu <fenghua.yu@...el.com>
Subject: [PATCH 3/4] Documentation/admin-guide: Change doc for bus lock ratelimit

Since bus lock rate limit changes the split_lock_detect parameter,
update the documentation for the change.

Signed-off-by: Fenghua Yu <fenghua.yu@...el.com>
Reviewed-by: Tony Luck <tony.luck@...el.com>
---
 Documentation/admin-guide/kernel-parameters.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index f5892896bedc..c13bbfd8c5aa 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5154,6 +5154,14 @@
 				  exception. Default behavior is by #AC if
 				  both features are enabled in hardware.
 
+			ratelimit:N -
+				  Set system wide rate limit to N bus locks
+				  per second for bus lock detection.
+				  0 < N <= 1000.
+
+				  N/A for split lock detection.
+
+
 			If an #AC exception is hit in the kernel or in
 			firmware (i.e. not while executing in user mode)
 			the kernel will oops in either "warn" or "fatal"
-- 
2.31.1