xen/tmem: Remove the boot options and fold them in the tmem.X parameters.

If tmem is built-in or a module, the user has the option on
the command line to influence it by doing: tmem.<some option>
instead of having a variety of "nocleancache", and
"nofrontswap". The others: "noselfballooning" and "selfballooning";
and "noselfshrink" are in a different driver xen-selfballoon.c
and the patches:

 xen/tmem: Remove the usage of 'noselfshrink' and use 'tmem.selfshrink' bool instead.
 xen/tmem: Remove the usage of 'noselfballoon','selfballoon' and use 'tmem.selfballon' bool instead.

remove them.

Also add documentation.

Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index c3bfacb92910..3de01edca3ea 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -3005,6 +3005,26 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                         Force threading of all interrupt handlers except those
                         marked explicitly IRQF_NO_THREAD.
 
+        tmem            [KNL,XEN]
+                        Enable the Transcendent memory driver if built-in.
+
+        tmem.cleancache=0|1 [KNL, XEN]
+                        Default is on (1). Disable the usage of the cleancache
+                        API to send anonymous pages to the hypervisor.
+
+        tmem.frontswap=0|1 [KNL, XEN]
+                        Default is on (1). Disable the usage of the frontswap
+                        API to send swap pages to the hypervisor.
+
+        tmem.selfballooning=0|1 [KNL, XEN]
+                        Default is on (1). Disable the driving of swap pages
+                        to the hypervisor.
+
+        tmem.selfshrinking=0|1 [KNL, XEN]
+                        Default is on (1). Partial swapoff that immediately
+                        transfers pages from Xen hypervisor back to the
+                        kernel based on different criteria.
+
         topology=       [S390]
                         Format: {off | on}
                         Specify if the kernel should make use of the cpu