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https://github.com/xen-project/xen.git
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Juergen Gross
30f5e8aba1
xenpaging is using libxc internals. Fix that. Signed-off-by: Juergen Gross <jgross@suse.com> Acked-by: Wei Liu <wl@xen.org>
153 lines
3.8 KiB
C
153 lines
3.8 KiB
C
/******************************************************************************
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* tools/xenpaging/xenpaging.h
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*
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* Xen domain paging.
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*
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* Copyright (c) 2009 Citrix Systems, Inc. (Patrick Colp)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __XEN_PAGING2_H__
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#define __XEN_PAGING2_H__
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#include <malloc.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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#include <xenevtchn.h>
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#define XC_WANT_COMPAT_MAP_FOREIGN_API
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#include <xenctrl.h>
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// #include <xc_private.h>
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#include <xen/event_channel.h>
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#include <xen/vm_event.h>
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#define XENPAGING_PAGEIN_QUEUE_SIZE 64
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struct vm_event {
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domid_t domain_id;
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xenevtchn_handle *xce_handle;
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int port;
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vm_event_back_ring_t back_ring;
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uint32_t evtchn_port;
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void *ring_page;
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};
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struct xenpaging {
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xc_interface *xc_handle;
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xentoollog_logger *logger;
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struct xs_handle *xs_handle;
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unsigned long *bitmap;
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unsigned long *slot_to_gfn;
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int *gfn_to_slot;
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void *paging_buffer;
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struct vm_event vm_event;
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int fd;
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/* number of pages for which data structures were allocated */
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int max_pages;
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int num_paged_out;
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int target_tot_pages;
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int policy_mru_size;
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int use_poll_timeout;
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int debug;
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int stack_count;
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int *free_slot_stack;
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unsigned long pagein_queue[XENPAGING_PAGEIN_QUEUE_SIZE];
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};
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#define DPRINTF(msg, args...) xtl_log(paging->logger, XTL_DETAIL, 0, \
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"paging", msg, ## args)
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#define ERROR(msg, args...) xtl_log(paging->logger, XTL_ERROR, -1, \
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"paging", msg, ## args)
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#define PERROR(msg, args...) xtl_log(paging->logger, XTL_ERROR, -1, \
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"paging", msg "(%d = %s)", ## args, \
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errno, strerror(errno))
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extern void create_page_in_thread(struct xenpaging *paging);
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extern void page_in_trigger(void);
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#define BITS_PER_LONG (sizeof(unsigned long) * 8)
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#define ORDER_LONG (sizeof(unsigned long) == 4 ? 5 : 6)
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#define BITMAP_ENTRY(_nr,_bmap) ((_bmap))[(_nr) / 8]
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#define BITMAP_SHIFT(_nr) ((_nr) % 8)
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static inline int bitmap_size(int nr_bits)
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{
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return (nr_bits + 7) / 8;
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}
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static inline void *bitmap_alloc(int nr_bits)
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{
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return calloc(1, bitmap_size(nr_bits));
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}
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static inline void bitmap_clear(void *addr, int nr_bits)
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{
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memset(addr, 0, bitmap_size(nr_bits));
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}
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static inline int test_bit(int nr, const void *_addr)
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{
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const char *addr = _addr;
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return (BITMAP_ENTRY(nr, addr) >> BITMAP_SHIFT(nr)) & 1;
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}
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static inline void clear_bit(int nr, void *_addr)
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{
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char *addr = _addr;
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BITMAP_ENTRY(nr, addr) &= ~(1UL << BITMAP_SHIFT(nr));
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}
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static inline void set_bit(int nr, void *_addr)
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{
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char *addr = _addr;
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BITMAP_ENTRY(nr, addr) |= (1UL << BITMAP_SHIFT(nr));
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}
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static inline int test_and_clear_bit(int nr, void *addr)
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{
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int oldbit = test_bit(nr, addr);
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clear_bit(nr, addr);
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return oldbit;
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}
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static inline int test_and_set_bit(int nr, void *addr)
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{
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int oldbit = test_bit(nr, addr);
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set_bit(nr, addr);
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return oldbit;
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}
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#endif // __XEN_PAGING_H__
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/*
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* Local variables:
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* mode: C
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* c-file-style: "BSD"
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: nil
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* End:
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*/
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