From: "tip-bot2 for Fenghua Yu" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: Fenghua Yu <fenghua.yu@intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Tony Luck <tony.luck@intel.com>,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: [tip: x86/splitlock] Documentation/admin-guide: Add bus lock ratelimit
Date: Tue, 18 May 2021 14:44:21 -0000 [thread overview]
Message-ID: <162134906161.29796.1181461995523391470.tip-bot2@tip-bot2> (raw)
In-Reply-To: <20210419214958.4035512-4-fenghua.yu@intel.com>
The following commit has been merged into the x86/splitlock branch of tip:
Commit-ID: 9d839c280b64817345c2fa462c0027a9bd742361
Gitweb: https://git.kernel.org/tip/9d839c280b64817345c2fa462c0027a9bd742361
Author: Fenghua Yu <fenghua.yu@intel.com>
AuthorDate: Mon, 19 Apr 2021 21:49:57
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Tue, 18 May 2021 16:39:31 +02:00
Documentation/admin-guide: Add 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@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/r/20210419214958.4035512-4-fenghua.yu@intel.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 cb89dbd..ca94624 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5283,6 +5283,14 @@
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"
next prev parent reply other threads:[~2021-05-18 14:44 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-19 21:49 [PATCH 0/4] x86/bus_lock: Set rate limit for bus lock Fenghua Yu
2021-04-19 21:49 ` [PATCH 1/4] Documentation/x86: Add buslock.rst Fenghua Yu
2021-05-18 14:39 ` Thomas Gleixner
2021-05-18 14:44 ` [tip: x86/splitlock] " tip-bot2 for Fenghua Yu
2021-08-18 1:59 ` Xiaoyao Li
2021-08-18 15:36 ` Fenghua Yu
2021-08-19 3:36 ` Xiaoyao Li
2021-04-19 21:49 ` [PATCH 2/4] x86/bus_lock: Set rate limit for bus lock Fenghua Yu
2021-05-18 14:44 ` [tip: x86/splitlock] " tip-bot2 for Fenghua Yu
2021-04-19 21:49 ` [PATCH 3/4] Documentation/admin-guide: Change doc for bus lock ratelimit Fenghua Yu
2021-05-18 14:44 ` tip-bot2 for Fenghua Yu [this message]
2021-04-19 21:49 ` [PATCH 4/4] Documentation/x86: Add ratelimit in buslock.rst Fenghua Yu
2021-05-18 14:44 ` [tip: x86/splitlock] " tip-bot2 for Fenghua Yu
2021-05-17 18:46 ` [PATCH 0/4] x86/bus_lock: Set rate limit for bus lock Fenghua Yu
2021-05-17 19:01 ` Thomas Gleixner
2021-05-17 19:05 ` Fenghua Yu
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