As the 'tmem' driver is the one that actually sets whether
it will use it (or not) so might as well make tmem responsible
for this knob.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
---
drivers/xen/Kconfig | 5 ++---
drivers/xen/xen-selfballoon.c | 25 ++-----------------------
2 files changed, 4 insertions(+), 26 deletions(-)
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index 98e9744..9e02d60 100644
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -19,11 +19,10 @@ config XEN_SELFBALLOONING
by the current usage of anonymous memory ("committed AS") and
controlled by various sysfs-settable parameters. Configuring
FRONTSWAP is highly recommended; if it is not configured, self-
- ballooning is disabled by default but can be enabled with the
- 'selfballooning' kernel boot parameter. If FRONTSWAP is configured,
+ ballooning is disabled by default. If FRONTSWAP is configured,
frontswap-selfshrinking is enabled by default but can be disabled
with the 'tmem.selfshrink=0' kernel boot parameter; and
self-ballooning
- is enabled by default but can be disabled with the 'noselfballooning'
+ is enabled by default but can be disabled with the
'tmem.selfballooning=0'
kernel boot parameter. Note that systems without a sufficiently
large swap device should not enable self-ballooning.
diff --git a/drivers/xen/xen-selfballoon.c b/drivers/xen/xen-selfballoon.c
index 012f9d9..5d637e2 100644
--- a/drivers/xen/xen-selfballoon.c
+++ b/drivers/xen/xen-selfballoon.c
@@ -57,9 +57,9 @@
* configured, it is highly recommended that frontswap also be configured
* and enabled when selfballooning is running. So, selfballooning
* is disabled by default if frontswap is not configured and can only
- * be enabled with the "selfballooning" kernel boot option; similarly
+ * be enabled with the "tmem.selfballooning=1" kernel boot option; similarly
* selfballooning is enabled by default if frontswap is configured and
- * can be disabled with the "noselfballooning" kernel boot option. Finally,
+ * can be disabled with the "tmem.selfballooning=0" kernel boot option.
Finally,
* when frontswap is configured,frontswap-selfshrinking can be disabled
* with the "tmem.selfshrink=0" kernel boot option.
*
@@ -173,27 +173,6 @@ static void frontswap_selfshrink(void)
frontswap_shrink(tgt_frontswap_pages);
}
-/* Disable with kernel boot option. */
-static bool use_selfballooning = true;
-
-static int __init xen_noselfballooning_setup(char *s)
-{
- use_selfballooning = false;
- return 1;
-}
-
-__setup("noselfballooning", xen_noselfballooning_setup);
-#else /* !CONFIG_FRONTSWAP */
-/* Enable with kernel boot option. */
-static bool use_selfballooning;
-
-static int __init xen_selfballooning_setup(char *s)
-{
- use_selfballooning = true;
- return 1;
-}
-
-__setup("selfballooning", xen_selfballooning_setup);
#endif /* CONFIG_FRONTSWAP */
#define MB2PAGES(mb) ((mb) << (20 - PAGE_SHIFT))
--
1.7.7.6
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