[PATCH v2] Documentation: add 'crashkernel=auto' entry into kernel-parameters.txt

From: Yaowei Bai
Date: Mon Aug 24 2015 - 11:06:46 EST

There is no 'crashkernel=auto' entry in kernel-parameters.txt, borrow it
from kexec-kdump-howto.txt file in the kexec-tools-2.0.0 package.

Signed-off-by: Yaowei Bai <bywxiaobai@xxxxxxx>
Documentation/kernel-parameters.txt | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 1d6f045..9e5913e 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -797,6 +797,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
It will be ignored when crashkernel=X,high is not used
or memory reserved is below 4G.

+ crashkernel=auto
+ This specification allows the kernel to decide how much
+ memory to reserve for the purposes of kdump. It will make
+ this determination based on the amount of memory you have
+ in your system, and scale the allocation accordingly.
+ Note that if you have less than 4Gb of memory in your system,
+ this specification will opt to not allocate any memory for
+ the purposes of kdump.
cs89x0_dma= [HW,NET]
Format: <dma>


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