search for: config_virtio_balloon

On Fri, Apr 14, 2017 at 10:30:27AM +0800, Wei Wang wrote: > OK. What do you think if we add this: > > #if defined(CONFIG_VIRTIO_BALLOON) || defined(CONFIG_VIRTIO_BALLOON_MODULE) That's spelled "IS_ENABLED(CONFIG_VIRTIO_BALLOON)", FYI.

On Fri, Apr 14, 2017 at 10:30:27AM +0800, Wei Wang wrote: > OK. What do you think if we add this: > > #if defined(CONFIG_VIRTIO_BALLOON) || defined(CONFIG_VIRTIO_BALLOON_MODULE) That's spelled "IS_ENABLED(CONFIG_VIRTIO_BALLOON)", FYI.

On 01.04.20 14:50, Jason Wang wrote: > > On 2020/4/1 ??7:21, Christian Borntraeger wrote: >> On 26.03.20 15:01, Jason Wang wrote: >>> Currently, CONFIG_VHOST depends on CONFIG_VIRTUALIZATION. But vhost is >>> not necessarily for VM since it's a generic userspace and kernel >>> communication protocol. Such dependency may prevent archs without >>>

On 01.04.20 14:50, Jason Wang wrote: > > On 2020/4/1 ??7:21, Christian Borntraeger wrote: >> On 26.03.20 15:01, Jason Wang wrote: >>> Currently, CONFIG_VHOST depends on CONFIG_VIRTUALIZATION. But vhost is >>> not necessarily for VM since it's a generic userspace and kernel >>> communication protocol. Such dependency may prevent archs without >>>

On Thu, 13 Apr 2017 17:35:06 +0800 Wei Wang <wei.w.wang at intel.com> wrote: > Add a function to find a page block on the free list specified by the > caller. Pages from the page block may be used immediately after the > function returns. The caller is responsible for detecting or preventing > the use of such pages. > > ... > > --- a/mm/page_alloc.c > +++

On Thu, 13 Apr 2017 17:35:06 +0800 Wei Wang <wei.w.wang at intel.com> wrote: > Add a function to find a page block on the free list specified by the > caller. Pages from the page block may be used immediately after the > function returns. The caller is responsible for detecting or preventing > the use of such pages. > > ... > > --- a/mm/page_alloc.c > +++

...33 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -1835,6 +1835,11 @@ extern void free_area_init_node(int nid, unsigned long * zones_size, > unsigned long zone_start_pfn, unsigned long *zholes_size); > extern void free_initmem(void); > > +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON) > +extern int report_unused_page_block(struct zone *zone, unsigned int order, > + unsigned int migratetype, > + struct page **page); > +#endif > /* > * Free reserved pages within range [PAGE_ALIGN(start), end & PAGE_MASK) > * into the buddy system. The f...

...33 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -1835,6 +1835,11 @@ extern void free_area_init_node(int nid, unsigned long * zones_size, > unsigned long zone_start_pfn, unsigned long *zholes_size); > extern void free_initmem(void); > > +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON) > +extern int report_unused_page_block(struct zone *zone, unsigned int order, > + unsigned int migratetype, > + struct page **page); > +#endif > /* > * Free reserved pages within range [PAGE_ALIGN(start), end & PAGE_MASK) > * into the buddy system. The f...

...33 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -1835,6 +1835,11 @@ extern void free_area_init_node(int nid, unsigned long * zones_size, > unsigned long zone_start_pfn, unsigned long *zholes_size); > extern void free_initmem(void); > > +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON) > +extern int report_unused_page_block(struct zone *zone, unsigned int order, > + unsigned int migratetype, > + struct page **page); > +#endif > /* > * Free reserved pages within range [PAGE_ALIGN(start), end & PAGE_MASK) > * into the buddy system. The f...

...33 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -1835,6 +1835,11 @@ extern void free_area_init_node(int nid, unsigned long * zones_size, > unsigned long zone_start_pfn, unsigned long *zholes_size); > extern void free_initmem(void); > > +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON) > +extern int report_unused_page_block(struct zone *zone, unsigned int order, > + unsigned int migratetype, > + struct page **page); > +#endif > /* > * Free reserved pages within range [PAGE_ALIGN(start), end & PAGE_MASK) > * into the buddy system. The f...

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch-set follows the main idea discussed at 2012 LSFMMS session: "Ballooning for transparent huge

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch-set follows the main idea discussed at 2012 LSFMMS session: "Ballooning for transparent huge

...nfigs/debug_defconfig @@ -57,8 +57,6 @@ CONFIG_PROTECTED_VIRTUALIZATION_GUEST=y CONFIG_CMM=m CONFIG_APPLDATA_BASE=y CONFIG_KVM=m -CONFIG_VHOST_NET=m -CONFIG_VHOST_VSOCK=m CONFIG_OPROFILE=m CONFIG_KPROBES=y CONFIG_JUMP_LABEL=y @@ -561,6 +559,9 @@ CONFIG_VFIO_MDEV_DEVICE=m CONFIG_VIRTIO_PCI=m CONFIG_VIRTIO_BALLOON=m CONFIG_VIRTIO_INPUT=y +CONFIG_VHOST=m +CONFIG_VHOST_NET=m +CONFIG_VHOST_VSOCK=m CONFIG_S390_CCW_IOMMU=y CONFIG_S390_AP_IOMMU=y CONFIG_EXT4_FS=y diff --git a/arch/s390/configs/defconfig b/arch/s390/configs/defconfig index 7cd0648c1f4e..39e69c4e8cf7 100644 --- a/arch/s390/configs/defconfig +++...

...ONFIG_APPLDATA_BASE=y > > CONFIG_KVM=m > > -CONFIG_VHOST_NET=m > > -CONFIG_VHOST_VSOCK=m > > CONFIG_OPROFILE=m > > CONFIG_KPROBES=y > > CONFIG_JUMP_LABEL=y > > @@ -561,6 +559,9 @@ CONFIG_VFIO_MDEV_DEVICE=m > > CONFIG_VIRTIO_PCI=m > > CONFIG_VIRTIO_BALLOON=m > > CONFIG_VIRTIO_INPUT=y > > +CONFIG_VHOST=m > > +CONFIG_VHOST_NET=m > > +CONFIG_VHOST_VSOCK=m > > CONFIG_S390_CCW_IOMMU=y > > CONFIG_S390_AP_IOMMU=y > > CONFIG_EXT4_FS=y > > diff --git a/arch/s390/configs/defconfig b/arch/s390/configs/defc...

...ude/linux/mm.h index 5d22e69..82361a6 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1841,6 +1841,11 @@ extern void free_area_init_node(int nid, unsigned long * zones_size, unsigned long zone_start_pfn, unsigned long *zholes_size); extern void free_initmem(void); +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON) +extern int report_unused_page_block(struct zone *zone, unsigned int order, + unsigned int migratetype, + struct page **page); +#endif /* * Free reserved pages within range [PAGE_ALIGN(start), end & PAGE_MASK) * into the buddy system. The freed pages will be poisoned with pa...

...ude/linux/mm.h index 5d22e69..82361a6 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1841,6 +1841,11 @@ extern void free_area_init_node(int nid, unsigned long * zones_size, unsigned long zone_start_pfn, unsigned long *zholes_size); extern void free_initmem(void); +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON) +extern int report_unused_page_block(struct zone *zone, unsigned int order, + unsigned int migratetype, + struct page **page); +#endif /* * Free reserved pages within range [PAGE_ALIGN(start), end & PAGE_MASK) * into the buddy system. The freed pages will be poisoned with pa...

...ude/linux/mm.h index 46b9ac5..76cb433 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1835,6 +1835,11 @@ extern void free_area_init_node(int nid, unsigned long * zones_size, unsigned long zone_start_pfn, unsigned long *zholes_size); extern void free_initmem(void); +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON) +extern int report_unused_page_block(struct zone *zone, unsigned int order, + unsigned int migratetype, + struct page **page); +#endif /* * Free reserved pages within range [PAGE_ALIGN(start), end & PAGE_MASK) * into the buddy system. The freed pages will be poisoned with pa...

...e3 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -1835,6 +1835,13 @@ extern void free_area_init_node(int nid, unsigned long * zones_size, > unsigned long zone_start_pfn, unsigned long *zholes_size); > extern void free_initmem(void); > > +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON) > +extern void walk_free_mem_block(void *opaque1, > + unsigned int min_order, > + void (*visit)(void *opaque2, > + unsigned long pfn, > + unsigned long nr_pages)); > +#endif Is the ifdef necessary. Sure only virtio balloon driver will use this currently...

...e3 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -1835,6 +1835,13 @@ extern void free_area_init_node(int nid, unsigned long * zones_size, > unsigned long zone_start_pfn, unsigned long *zholes_size); > extern void free_initmem(void); > > +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON) > +extern void walk_free_mem_block(void *opaque1, > + unsigned int min_order, > + void (*visit)(void *opaque2, > + unsigned long pfn, > + unsigned long nr_pages)); > +#endif Is the ifdef necessary. Sure only virtio balloon driver will use this currently...

...ude/linux/mm.h index 46b9ac5..24481e3 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1835,6 +1835,13 @@ extern void free_area_init_node(int nid, unsigned long * zones_size, unsigned long zone_start_pfn, unsigned long *zholes_size); extern void free_initmem(void); +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON) +extern void walk_free_mem_block(void *opaque1, + unsigned int min_order, + void (*visit)(void *opaque2, + unsigned long pfn, + unsigned long nr_pages)); +#endif /* * Free reserved pages within range [PAGE_ALIGN(start), end & PAGE_MASK) * into the buddy system. T...