Displaying 20 results from an estimated 112 matches for "show_free_areas".
2017 Apr 13
2
[PATCH v9 3/5] mm: function to offer a page block on the free list
...ecified 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
> +++ b/mm/page_alloc.c
> @@ -4498,6 +4498,93 @@ void show_free_areas(unsigned int filter)
> show_swap_cache_info();
> }
>
> +/**
> + * Heuristically get a page block in the system that is unused.
> + * It is possible that pages from the page block are used immediately after
> + * inquire_unused_page_block() returns. It is the caller's r...
2017 Apr 13
2
[PATCH v9 3/5] mm: function to offer a page block on the free list
...ecified 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
> +++ b/mm/page_alloc.c
> @@ -4498,6 +4498,93 @@ void show_free_areas(unsigned int filter)
> show_swap_cache_info();
> }
>
> +/**
> + * Heuristically get a page block in the system that is unused.
> + * It is possible that pages from the page block are used immediately after
> + * inquire_unused_page_block() returns. It is the caller's r...
2006 Feb 09
0
Repeated kernel "oops" / oom-killer with Ralph Passgang''s xen 3.0.0 Debian packages
...rintk+0x197/0x260
[<c011bc07>] vprintk+0x197/0x260
[<c010d062>] do_IRQ+0x22/0x30
[<c01048a0>] evtchn_do_upcall+0x70/0xa0
[<c0108c48>] hypervisor_callback+0x2c/0x34
[<c011ba67>] printk+0x17/0x20
[<c01546d5>] show_swap_cache_info+0x45/0x80
[<c0142173>] show_free_areas+0x2f3/0x3b0
[<c01407b5>] out_of_memory+0x35/0x90
[<c0141836>] __alloc_pages+0x346/0x430
[<c03eb9f8>] centaur_init_cpu+0x8/0x10
[<c0143da0>] __do_page_cache_readahead+0x100/0x180
[<c03eb9fc>] centaur_init_cpu+0xc/0x10
[<c01442c0>] max_sane_readahead+0x30/0x5...
2018 Mar 26
4
[PATCH v29 1/4] mm: support reporting free page blocks
...at
> are reported as free pages but are written after the report function
> returns will be captured by the hypervisor, and they will be added to the
> next round of memory transfer.
>
> ...
>
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -4912,6 +4912,102 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
> show_swap_cache_info();
> }
>
> +/*
> + * Walk through a free page list and report the found pfn range via the
> + * callback.
> + *
> + * Return 0 if it completes the reporting. Otherwise, return the non-zero
> + * value...
2018 Mar 26
4
[PATCH v29 1/4] mm: support reporting free page blocks
...at
> are reported as free pages but are written after the report function
> returns will be captured by the hypervisor, and they will be added to the
> next round of memory transfer.
>
> ...
>
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -4912,6 +4912,102 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
> show_swap_cache_info();
> }
>
> +/*
> + * Walk through a free page list and report the found pfn range via the
> + * callback.
> + *
> + * Return 0 if it completes the reporting. Otherwise, return the non-zero
> + * value...
2017 Mar 16
4
[PATCH kernel v8 3/4] mm: add inerface to offer info about unused pages
...ible, even though that's rather a layering
violation :( What would have to be done to make that possible? Perhaps
we can put some *small* helpers into page_alloc.c to prevent things
from becoming too ugly.
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -4498,6 +4498,120 @@ void show_free_areas(unsigned int filter)
> show_swap_cache_info();
> }
>
> +static int __record_unused_pages(struct zone *zone, int order,
> + __le64 *buf, unsigned int size,
> + unsigned int *offset, bool part_fill)
> +{
> + unsigned long pfn, flags;
> + int t, ret = 0;
> +...
2017 Mar 16
4
[PATCH kernel v8 3/4] mm: add inerface to offer info about unused pages
...ible, even though that's rather a layering
violation :( What would have to be done to make that possible? Perhaps
we can put some *small* helpers into page_alloc.c to prevent things
from becoming too ugly.
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -4498,6 +4498,120 @@ void show_free_areas(unsigned int filter)
> show_swap_cache_info();
> }
>
> +static int __record_unused_pages(struct zone *zone, int order,
> + __le64 *buf, unsigned int size,
> + unsigned int *offset, bool part_fill)
> +{
> + unsigned long pfn, flags;
> + int t, ret = 0;
> +...
2017 Mar 29
2
[PATCH kernel v8 3/4] mm: add inerface to offer info about unused pages
...Then it will be the caller's
> responsibility to format the pfn if they need.
Sounds good at a high level, but we'd have to see the implementation
to judge it properly.
> > > --- a/mm/page_alloc.c
> > > +++ b/mm/page_alloc.c
> > > @@ -4498,6 +4498,120 @@ void show_free_areas(unsigned int filter)
> > > show_swap_cache_info();
> > > }
> > > +static int __record_unused_pages(struct zone *zone, int order,
> > > + __le64 *buf, unsigned int size,
> > > + unsigned int *offset, bool part_fill)
> > > +{
> >...
2017 Mar 29
2
[PATCH kernel v8 3/4] mm: add inerface to offer info about unused pages
...Then it will be the caller's
> responsibility to format the pfn if they need.
Sounds good at a high level, but we'd have to see the implementation
to judge it properly.
> > > --- a/mm/page_alloc.c
> > > +++ b/mm/page_alloc.c
> > > @@ -4498,6 +4498,120 @@ void show_free_areas(unsigned int filter)
> > > show_swap_cache_info();
> > > }
> > > +static int __record_unused_pages(struct zone *zone, int order,
> > > + __le64 *buf, unsigned int size,
> > > + unsigned int *offset, bool part_fill)
> > > +{
> >...
2018 Jan 25
4
[PATCH v24 1/2] mm: support reporting free page blocks
...range [PAGE_ALIGN(start), end & PAGE_MASK)
> * into the buddy system. The freed pages will be poisoned with pattern
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 76c9688..705de22 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -4899,6 +4899,97 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
> show_swap_cache_info();
> }
>
> +/*
> + * Walk through a free page list and report the found pfn range via the
> + * callback.
> + *
> + * Return false if the callback requests to stop reporting. Otherwise,
> + * return tr...
2018 Jan 25
4
[PATCH v24 1/2] mm: support reporting free page blocks
...range [PAGE_ALIGN(start), end & PAGE_MASK)
> * into the buddy system. The freed pages will be poisoned with pattern
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 76c9688..705de22 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -4899,6 +4899,97 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
> show_swap_cache_info();
> }
>
> +/*
> + * Walk through a free page list and report the found pfn range via the
> + * callback.
> + *
> + * Return false if the callback requests to stop reporting. Otherwise,
> + * return tr...
2017 Jul 14
4
[PATCH v12 6/8] mm: support reporting free page blocks
...range [PAGE_ALIGN(start), end & PAGE_MASK)
> * into the buddy system. The freed pages will be poisoned with pattern
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 64b7d82..8b3c9dd 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -4753,6 +4753,102 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
> show_swap_cache_info();
> }
>
> +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON)
> +
> +/*
> + * Heuristically get a page block in the system that is unused.
> + * It is possible that pages from the page block are used immediately afte...
2017 Jul 14
4
[PATCH v12 6/8] mm: support reporting free page blocks
...range [PAGE_ALIGN(start), end & PAGE_MASK)
> * into the buddy system. The freed pages will be poisoned with pattern
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 64b7d82..8b3c9dd 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -4753,6 +4753,102 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
> show_swap_cache_info();
> }
>
> +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON)
> +
> +/*
> + * Heuristically get a page block in the system that is unused.
> + * It is possible that pages from the page block are used immediately afte...
2017 Jul 13
1
[PATCH v12 6/8] mm: support reporting free page blocks
...range [PAGE_ALIGN(start), end & PAGE_MASK)
> * into the buddy system. The freed pages will be poisoned with pattern
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 64b7d82..8b3c9dd 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -4753,6 +4753,102 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
> show_swap_cache_info();
> }
>
> +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON)
> +
> +/*
> + * Heuristically get a page block in the system that is unused.
> + * It is possible that pages from the page block are used immediately afte...
2017 Jul 13
1
[PATCH v12 6/8] mm: support reporting free page blocks
...range [PAGE_ALIGN(start), end & PAGE_MASK)
> * into the buddy system. The freed pages will be poisoned with pattern
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 64b7d82..8b3c9dd 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -4753,6 +4753,102 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
> show_swap_cache_info();
> }
>
> +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON)
> +
> +/*
> + * Heuristically get a page block in the system that is unused.
> + * It is possible that pages from the page block are used immediately afte...
2016 Jul 27
0
[PATCH v2 repost 3/7] mm: add a function to get the max pfn
...ck <cornelia.huck at de.ibm.com>
Cc: Amit Shah <amit.shah at redhat.com>
---
mm/page_alloc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8b3e134..7da61ad 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4517,6 +4517,12 @@ void show_free_areas(unsigned int filter)
show_swap_cache_info();
}
+unsigned long get_max_pfn(void)
+{
+ return max_pfn;
+}
+EXPORT_SYMBOL(get_max_pfn);
+
static void zoneref_set_zone(struct zone *zone, struct zoneref *zoneref)
{
zoneref->zone = zone;
--
1.9.1
2016 Jul 27
1
[PATCH v2 repost 3/7] mm: add a function to get the max pfn
...it Shah <amit.shah at redhat.com>
> ---
> mm/page_alloc.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 8b3e134..7da61ad 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -4517,6 +4517,12 @@ void show_free_areas(unsigned int filter)
> show_swap_cache_info();
> }
>
> +unsigned long get_max_pfn(void)
> +{
> + return max_pfn;
> +}
> +EXPORT_SYMBOL(get_max_pfn);
> +
This needs a coment that this can change at any time.
So it's only good as a hint e.g. for sizing data struc...
2016 Oct 21
0
[RESEND PATCH v3 kernel 3/7] mm: add a function to get the max pfn
...void free_initmem(void);
+extern unsigned long get_max_pfn(void);
/*
* Free reserved pages within range [PAGE_ALIGN(start), end & PAGE_MASK)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 2b3bf67..e5f63a9 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4426,6 +4426,16 @@ void show_free_areas(unsigned int filter)
show_swap_cache_info();
}
+/*
+ * The max_pfn can change because of memory hot plug, so it's only good
+ * as a hint. e.g. for sizing data structures.
+ */
+unsigned long get_max_pfn(void)
+{
+ return max_pfn;
+}
+EXPORT_SYMBOL(get_max_pfn);
+
static void zoneref_set_...
2017 Apr 14
0
[PATCH v9 3/5] mm: function to offer a page block on the free list
...es 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
>> +++ b/mm/page_alloc.c
>> @@ -4498,6 +4498,93 @@ void show_free_areas(unsigned int filter)
>> show_swap_cache_info();
>> }
>>
>> +/**
>> + * Heuristically get a page block in the system that is unused.
>> + * It is possible that pages from the page block are used immediately after
>> + * inquire_unused_page_block() re...
2016 Jul 27
1
[PATCH v2 repost 3/7] mm: add a function to get the max pfn
...it Shah <amit.shah at redhat.com>
> ---
> mm/page_alloc.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 8b3e134..7da61ad 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -4517,6 +4517,12 @@ void show_free_areas(unsigned int filter)
> show_swap_cache_info();
> }
>
> +unsigned long get_max_pfn(void)
> +{
> + return max_pfn;
> +}
> +EXPORT_SYMBOL(get_max_pfn);
> +
This needs a coment that this can change at any time.
So it's only good as a hint e.g. for sizing data struc...