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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] numa: Extend MEMOP_ allocation functions to take a node argument.
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1215265417 -3600
# Node ID 4bdc3de246c3d9660187db9bf7ec328668771d4b
# Parent 5b7e60d70394db5541100ae5d88829415b04509d
numa: Extend MEMOP_ allocation functions to take a node argument.
The address_bits field will be limited to 8 bits and is now embedded
in the mem_flags member, which additionally contains the node number
(limited to 8 bit).
Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx>
Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
---
tools/ioemu/vl.c | 5 +++--
tools/libxc/xc_domain.c | 22 +++++++++++-----------
tools/libxc/xc_private.c | 2 +-
tools/libxc/xenctrl.h | 4 ++--
tools/python/xen/lowlevel/xc/xc.c | 34 ----------------------------------
xen/common/memory.c | 31 ++++++++++++++++---------------
xen/common/page_alloc.c | 3 +++
xen/include/public/memory.h | 26 ++++++++++++++++++++------
xen/include/public/xen-compat.h | 2 +-
9 files changed, 57 insertions(+), 72 deletions(-)
diff -r 5b7e60d70394 -r 4bdc3de246c3 tools/ioemu/vl.c
--- a/tools/ioemu/vl.c Sat Jul 05 14:42:08 2008 +0100
+++ b/tools/ioemu/vl.c Sat Jul 05 14:43:37 2008 +0100
@@ -7044,8 +7044,9 @@ int set_mm_mapping(int xc_handle, uint32
{
int err = 0;
- err = xc_domain_memory_populate_physmap(xc_handle, domid, nr_pages, 0,
- address_bits, extent_start);
+ err = xc_domain_memory_populate_physmap(
+ xc_handle, domid, nr_pages, 0,
+ XENMEMF_address_bits(address_bits), extent_start);
if (err) {
fprintf(stderr, "Failed to populate physmap\n");
return -1;
diff -r 5b7e60d70394 -r 4bdc3de246c3 tools/libxc/xc_domain.c
--- a/tools/libxc/xc_domain.c Sat Jul 05 14:42:08 2008 +0100
+++ b/tools/libxc/xc_domain.c Sat Jul 05 14:43:37 2008 +0100
@@ -438,14 +438,14 @@ int xc_domain_memory_increase_reservatio
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
- unsigned int address_bits,
+ unsigned int mem_flags,
xen_pfn_t *extent_start)
{
int err;
struct xen_memory_reservation reservation = {
.nr_extents = nr_extents,
.extent_order = extent_order,
- .address_bits = address_bits,
+ .mem_flags = mem_flags,
.domid = domid
};
@@ -459,8 +459,8 @@ int xc_domain_memory_increase_reservatio
if ( err >= 0 )
{
DPRINTF("Failed allocation for dom %d: "
- "%ld extents of order %d, addr_bits %d\n",
- domid, nr_extents, extent_order, address_bits);
+ "%ld extents of order %d, mem_flags %x\n",
+ domid, nr_extents, extent_order, mem_flags);
errno = ENOMEM;
err = -1;
}
@@ -478,7 +478,7 @@ int xc_domain_memory_decrease_reservatio
struct xen_memory_reservation reservation = {
.nr_extents = nr_extents,
.extent_order = extent_order,
- .address_bits = 0,
+ .mem_flags = 0,
.domid = domid
};
@@ -507,17 +507,17 @@ int xc_domain_memory_decrease_reservatio
}
int xc_domain_memory_populate_physmap(int xc_handle,
- uint32_t domid,
- unsigned long nr_extents,
- unsigned int extent_order,
- unsigned int address_bits,
- xen_pfn_t *extent_start)
+ uint32_t domid,
+ unsigned long nr_extents,
+ unsigned int extent_order,
+ unsigned int mem_flags,
+ xen_pfn_t *extent_start)
{
int err;
struct xen_memory_reservation reservation = {
.nr_extents = nr_extents,
.extent_order = extent_order,
- .address_bits = address_bits,
+ .mem_flags = mem_flags,
.domid = domid
};
set_xen_guest_handle(reservation.extent_start, extent_start);
diff -r 5b7e60d70394 -r 4bdc3de246c3 tools/libxc/xc_private.c
--- a/tools/libxc/xc_private.c Sat Jul 05 14:42:08 2008 +0100
+++ b/tools/libxc/xc_private.c Sat Jul 05 14:43:37 2008 +0100
@@ -501,7 +501,7 @@ unsigned long xc_make_page_below_4G(
}
if ( xc_domain_memory_increase_reservation(
- xc_handle, domid, 1, 0, 32, &new_mfn) != 0 )
+ xc_handle, domid, 1, 0, XENMEMF_address_bits(32), &new_mfn) != 0 )
{
DPRINTF("xc_make_page_below_4G increase failed. mfn=%lx\n",mfn);
return 0;
diff -r 5b7e60d70394 -r 4bdc3de246c3 tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h Sat Jul 05 14:42:08 2008 +0100
+++ b/tools/libxc/xenctrl.h Sat Jul 05 14:43:37 2008 +0100
@@ -611,7 +611,7 @@ int xc_domain_memory_increase_reservatio
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
- unsigned int address_bits,
+ unsigned int mem_flags,
xen_pfn_t *extent_start);
int xc_domain_memory_decrease_reservation(int xc_handle,
@@ -624,7 +624,7 @@ int xc_domain_memory_populate_physmap(in
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
- unsigned int address_bits,
+ unsigned int mem_flags,
xen_pfn_t *extent_start);
int xc_domain_ioport_permission(int xc_handle,
diff -r 5b7e60d70394 -r 4bdc3de246c3 tools/python/xen/lowlevel/xc/xc.c
--- a/tools/python/xen/lowlevel/xc/xc.c Sat Jul 05 14:42:08 2008 +0100
+++ b/tools/python/xen/lowlevel/xc/xc.c Sat Jul 05 14:43:37 2008 +0100
@@ -1317,33 +1317,6 @@ static PyObject *pyxc_domain_set_memmap_
return zero;
}
-static PyObject *pyxc_domain_memory_increase_reservation(XcObject *self,
- PyObject *args,
- PyObject *kwds)
-{
- uint32_t dom;
- unsigned long mem_kb;
- unsigned int extent_order = 0 , address_bits = 0;
- unsigned long nr_extents;
-
- static char *kwd_list[] = { "domid", "mem_kb", "extent_order",
"address_bits", NULL };
-
- if ( !PyArg_ParseTupleAndKeywords(args, kwds, "il|ii", kwd_list,
- &dom, &mem_kb, &extent_order,
&address_bits) )
- return NULL;
-
- /* round down to nearest power of 2. Assume callers using extent_order>0
- know what they are doing */
- nr_extents = (mem_kb / (XC_PAGE_SIZE/1024)) >> extent_order;
- if ( xc_domain_memory_increase_reservation(self->xc_handle, dom,
- nr_extents, extent_order,
- address_bits, NULL) )
- return pyxc_error_to_exception();
-
- Py_INCREF(zero);
- return zero;
-}
-
static PyObject *pyxc_domain_ioport_permission(XcObject *self,
PyObject *args,
PyObject *kwds)
@@ -1817,13 +1790,6 @@ static PyMethodDef pyxc_methods[] = {
" map_limitkb [int]: .\n"
"Returns: [int] 0 on success; -1 on error.\n" },
- { "domain_memory_increase_reservation",
- (PyCFunction)pyxc_domain_memory_increase_reservation,
- METH_VARARGS | METH_KEYWORDS, "\n"
- "Increase a domain's memory reservation\n"
- " dom [int]: Identifier of domain.\n"
- " mem_kb [long]: .\n"
- "Returns: [int] 0 on success; -1 on error.\n" },
#ifdef __ia64__
{ "nvram_init",
(PyCFunction)pyxc_nvram_init,
diff -r 5b7e60d70394 -r 4bdc3de246c3 xen/common/memory.c
--- a/xen/common/memory.c Sat Jul 05 14:42:08 2008 +0100
+++ b/xen/common/memory.c Sat Jul 05 14:43:37 2008 +0100
@@ -44,7 +44,6 @@ static void increase_reservation(struct
unsigned long i;
xen_pfn_t mfn;
struct domain *d = a->domain;
- unsigned int node = domain_to_node(d);
if ( !guest_handle_is_null(a->extent_list) &&
!guest_handle_subrange_okay(a->extent_list, a->nr_done,
@@ -63,8 +62,7 @@ static void increase_reservation(struct
goto out;
}
- page = alloc_domheap_pages(
- d, a->extent_order, a->memflags | MEMF_node(node));
+ page = alloc_domheap_pages(d, a->extent_order, a->memflags);
if ( unlikely(page == NULL) )
{
gdprintk(XENLOG_INFO, "Could not allocate order=%d extent: "
@@ -93,7 +91,6 @@ static void populate_physmap(struct memo
unsigned long i, j;
xen_pfn_t gpfn, mfn;
struct domain *d = a->domain;
- unsigned int node = domain_to_node(d);
if ( !guest_handle_subrange_okay(a->extent_list, a->nr_done,
a->nr_extents-1) )
@@ -114,8 +111,7 @@ static void populate_physmap(struct memo
if ( unlikely(__copy_from_guest_offset(&gpfn, a->extent_list, i, 1)) )
goto out;
- page = alloc_domheap_pages(
- d, a->extent_order, a->memflags | MEMF_node(node));
+ page = alloc_domheap_pages(d, a->extent_order, a->memflags);
if ( unlikely(page == NULL) )
{
gdprintk(XENLOG_INFO, "Could not allocate order=%d extent: "
@@ -345,8 +341,10 @@ static long memory_exchange(XEN_GUEST_HA
d = current->domain;
memflags |= MEMF_bits(domain_clamp_alloc_bitsize(
- d, exch.out.address_bits ? : (BITS_PER_LONG+PAGE_SHIFT)));
- memflags |= MEMF_node(domain_to_node(d));
+ d,
+ XENMEMF_get_address_bits(exch.out.mem_flags) ? :
+ (BITS_PER_LONG+PAGE_SHIFT)));
+ memflags |= MEMF_node(XENMEMF_get_node(exch.out.mem_flags));
for ( i = (exch.nr_exchanged >> in_chunk_order);
i < (exch.in.nr_extents >> in_chunk_order);
@@ -490,6 +488,7 @@ long do_memory_op(unsigned long cmd, XEN
{
struct domain *d;
int rc, op;
+ unsigned int address_bits;
unsigned long start_extent, progress;
struct xen_memory_reservation reservation;
struct memop_args args;
@@ -521,14 +520,16 @@ long do_memory_op(unsigned long cmd, XEN
args.preempted = 0;
args.memflags = 0;
- if ( (reservation.address_bits != 0) &&
- (reservation.address_bits <
- (get_order_from_pages(max_page) + PAGE_SHIFT)) )
- {
- if ( reservation.address_bits <= PAGE_SHIFT )
+ address_bits = XENMEMF_get_address_bits(reservation.mem_flags);
+ if ( (address_bits != 0) &&
+ (address_bits < (get_order_from_pages(max_page) + PAGE_SHIFT)) )
+ {
+ if ( address_bits <= PAGE_SHIFT )
return start_extent;
- args.memflags = MEMF_bits(reservation.address_bits);
- }
+ args.memflags = MEMF_bits(address_bits);
+ }
+
+ args.memflags |= MEMF_node(XENMEMF_get_node(reservation.mem_flags));
if ( likely(reservation.domid == DOMID_SELF) )
{
diff -r 5b7e60d70394 -r 4bdc3de246c3 xen/common/page_alloc.c
--- a/xen/common/page_alloc.c Sat Jul 05 14:42:08 2008 +0100
+++ b/xen/common/page_alloc.c Sat Jul 05 14:43:37 2008 +0100
@@ -792,6 +792,9 @@ struct page_info *alloc_domheap_pages(
ASSERT(!in_irq());
+ if ( node == NUMA_NO_NODE )
+ node = domain_to_node(d);
+
bits = domain_clamp_alloc_bitsize(d, bits ? : (BITS_PER_LONG+PAGE_SHIFT));
if ( bits <= (PAGE_SHIFT + 1) )
return NULL;
diff -r 5b7e60d70394 -r 4bdc3de246c3 xen/include/public/memory.h
--- a/xen/include/public/memory.h Sat Jul 05 14:42:08 2008 +0100
+++ b/xen/include/public/memory.h Sat Jul 05 14:43:37 2008 +0100
@@ -35,6 +35,21 @@
#define XENMEM_increase_reservation 0
#define XENMEM_decrease_reservation 1
#define XENMEM_populate_physmap 6
+
+#if __XEN_INTERFACE_VERSION__ >= 0x00030209
+/*
+ * Maximum # bits addressable by the user of the allocated region (e.g., I/O
+ * devices often have a 32-bit limitation even in 64-bit systems). If zero
+ * then the user has no addressing restriction. This field is not used by
+ * XENMEM_decrease_reservation.
+ */
+#define XENMEMF_address_bits(x) (x)
+#define XENMEMF_get_address_bits(x) ((x) & 0xffu)
+/* NUMA node to allocate from. */
+#define XENMEMF_node(x) (((x) + 1) << 8)
+#define XENMEMF_get_node(x) ((((x) >> 8) - 1) & 0xffu)
+#endif
+
struct xen_memory_reservation {
/*
@@ -53,13 +68,12 @@ struct xen_memory_reservation {
xen_ulong_t nr_extents;
unsigned int extent_order;
- /*
- * Maximum # bits addressable by the user of the allocated region (e.g.,
- * I/O devices often have a 32-bit limitation even in 64-bit systems). If
- * zero then the user has no addressing restriction.
- * This field is not used by XENMEM_decrease_reservation.
- */
+#if __XEN_INTERFACE_VERSION__ >= 0x00030209
+ /* XENMEMF flags. */
+ unsigned int mem_flags;
+#else
unsigned int address_bits;
+#endif
/*
* Domain whose reservation is being changed.
diff -r 5b7e60d70394 -r 4bdc3de246c3 xen/include/public/xen-compat.h
--- a/xen/include/public/xen-compat.h Sat Jul 05 14:42:08 2008 +0100
+++ b/xen/include/public/xen-compat.h Sat Jul 05 14:43:37 2008 +0100
@@ -27,7 +27,7 @@
#ifndef __XEN_PUBLIC_XEN_COMPAT_H__
#define __XEN_PUBLIC_XEN_COMPAT_H__
-#define __XEN_LATEST_INTERFACE_VERSION__ 0x00030208
+#define __XEN_LATEST_INTERFACE_VERSION__ 0x00030209
#if defined(__XEN__) || defined(__XEN_TOOLS__)
/* Xen is built with matching headers and implements the latest interface. */
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