search for: scrub_page

hi I try to understand the code of balloon ,and got confused about the following parts of code: static int decrease_reservation(unsigned long nr_pages) { .... if (!PageHighMem(page)) { v = phys_to_virt(pfn << PAGE_SHIFT); scrub_pages(v, 1); ret = HYPERVISOR_update_va_mapping( (unsigned long)v, __pte_ma(0), 0); BUG_ON(ret); } #ifdef CONFIG_XEN_SCRUB_PAGES else { v = kmap(page); scrub_pages(v, 1); kunmap(page); } #endif .......

...uot;nr_cpus" , info.nr_cpus, "total_memory", pages_to_kib(info.total_pages), "free_memory", pages_to_kib(info.free_pages), "scrub_memory", pages_to_kib(info.scrub_pages), diff -r 51045f276c90 tools/python/xen/xend/XendNode.py --- a/tools/python/xen/xend/XendNode.py Mon Jul 31 10:48:48 2006 -0500 +++ b/tools/python/xen/xend/XendNode.py Mon Jul 31 10:49:10 2006 -0500 @@ -122,10 +122,6 @@ class XendNode: def physinfo(self): info = self.xc.physinfo()...

Testing on an 8-node 128-way NUMA machine has exposed a problem with Xen''s nr_cpus calculation. In this case, since Xen cuts off recognized CPUs at 32, the machine appears to have 16 CPUs on the first and second nodes and none on the remaining nodes. Given this asymmetry, the calculation of sockets_per_node (which is later used to calculate nr_cpus) is incorrect:

...dentifier is reported only once drivers/xen/balloon/balloon.c:218: error: for each function it appears in.) drivers/xen/balloon/balloon.c:218: error: `INVALID_P2M_ENTRY'' undeclared (first use in this function) drivers/xen/balloon/balloon.c:261: warning: implicit declaration of function `scrub_pages'' drivers/xen/balloon/balloon.c:283: warning: implicit declaration of function `mfn_to_pfn'' make[3]: *** [drivers/xen/balloon/balloon.o] Error 1 make[2]: *** [drivers/xen/balloon] Error 2 make[1]: *** [drivers/xen] Error 2 make: *** [drivers] Error 2 Does anyone know what caused...

This series adds an initial implementation for scrub. It works quite straightforward. The usermode issues an ioctl for each device in the fs. For each device, it enumerates the allocated device chunks. For each chunk, the contained extents are enumerated and the data checksums fetched. The extents are read sequentially and the checksums verified. If an error occurs (checksum or EIO), a good copy

...sparse/include/asm-xen/asm-ia64/hypervisor.h Sun Dec 4 19:12:00 2005 +++ b/linux-2.6-xen-sparse/include/asm-xen/asm-ia64/hypervisor.h Tue Dec 6 16:25:53 2005 @@ -52,4 +52,19 @@ #define mfn_to_pfn(x) (x) #define machine_to_phys_mapping 0 +// for drivers/xen/balloon/balloon.c +#ifdef CONFIG_XEN_SCRUB_PAGES +#define scrub_pages(_p,_n) memset((void *)(_p), 0, (_n) << PAGE_SHIFT) +#else +#define scrub_pages(_p,_n) ((void)0) +#endif +#define pte_mfn(_x) pte_pfn(_x) +#define INVALID_P2M_ENTRY (~0UL) +#define __pte_ma(_x) ((pte_t) {(_x)}) +#define phys_to_machine_mapping_valid(_x) (1) +#define kmap_...

..."nr_nodes", info.nr_nodes, - "total_memory", pages_to_kib(info.total_pages), - "free_memory", pages_to_kib(info.free_pages), - "scrub_memory", pages_to_kib(info.scrub_pages), - "cpu_khz", info.cpu_khz, - "hw_caps", cpu_cap); + ret_obj = Py_BuildValue("{s:i,s:i,s:i,s:l,s:l,s:l,s:i,s:s}", + "threads_per_core", info.threads_per_core, +...

...+372,7 @@ static enum bp_state increase_reservation(unsigned long nr_pages) 0); BUG_ON(ret); } +#endif /* Relinquish the page back to the allocator. */ ClearPageReserved(page); @@ -419,6 +421,7 @@ static enum bp_state decrease_reservation(unsigned long nr_pages, gfp_t gfp) scrub_page(page); +#ifdef CONFIG_XEN_HAVE_PVMMU if (xen_pv_domain() && !PageHighMem(page)) { if (!xen_feature(XENFEAT_auto_translated_physmap)) { ret = HYPERVISOR_update_va_mapping( @@ -427,6 +430,7 @@ static enum bp_state decrease_reservation(unsigned long nr_pages, gfp_t gfp) BUG_...

...RAY_SIZE(frame_list)) nr_pages = ARRAY_SIZE(frame_list); - scratch_page = get_balloon_scratch_page(); - for (i = 0; i < nr_pages; i++) { page = alloc_page(gfp); if (page == NULL) { @@ -413,6 +411,12 @@ static enum bp_state decrease_reservation(unsigned long nr_pages, gfp_t gfp) scrub_page(page); + /* + * Ballooned out frames are effectively replaced with + * a scratch frame. Ensure direct mappings and the + * p2m are consistent. + */ + scratch_page = get_balloon_scratch_page(); #ifdef CONFIG_XEN_HAVE_PVMMU if (xen_pv_domain() && !PageHighMem(page)) { ret...

...physical; + /* for missing devices, bdev is NULL */ page->bdev = bbio->stripes[mirror_index].dev->bdev; page->mirror_num = mirror_index + 1; page->page = alloc_page(GFP_NOFS); @@ -1042,6 +1043,12 @@ static int scrub_recheck_block(struct btrfs_fs_info *fs_info, struct scrub_page *page = sblock->pagev + page_num; DECLARE_COMPLETION_ONSTACK(complete); + if (page->bdev == NULL) { + page->io_error = 1; + sblock->no_io_error_seen = 0; + continue; + } + BUG_ON(!page->page); bio = bio_alloc(GFP_NOFS, 1); if (!bio) -- 1.7.10.1.362.g242cab3 --...

I installed Xen using the binary release on debian sarge and got it to boot no problem but when I check if dma is enabled with ''hdparm /dev/hda'' it''s not. I can''t enable it either with ''hdparm -d1 /dev/hda''. Says operation not permited. Using my debian default kernel dma works just fine. How can I enable dma with the Xen Kernel? Thanks!

Hi all, I am using Xen 2.0.7. I have Broadcom NetXtreme BCM5704 Gigabit Ethernet (rev 02) cards which support frames greater than 1500. However when I boot into Xen and try to set the MTU to anything higher than 1500 (e.g., 4000, 8000 etc) I get a segmentation fault. After this fault, every command fails with a segmentation fault. I saw a similar bug report posted here:

...d identifier is reported only once drivers/xen/balloon/balloon.c:209: error: for each function it appears in.) drivers/xen/balloon/balloon.c:209: error: `INVALID_P2M_ENTRY'' undeclared (first use in this function) drivers/xen/balloon/balloon.c:253: warning: implicit declaration of function `scrub_pages'' make[3]: *** [drivers/xen/balloon/balloon.o] Error 1 make[2]: *** [drivers/xen/balloon] Error 2 make[1]: *** [drivers/xen] Error 2 make: *** [drivers] Error 2 Attached is my .config file Thanks in advance -- Jerome Brown Technology Architect Hub.Net P: +64 3 961-5116 M: +64 29 453...

...v : int; (* domain * bus * dev * func multiplexed *) + domain : int; + vdevfn : int; + msitranslate : bool; + power_mgmt : bool; +} + +type physinfo = +{ + threads_per_core: int; + cores_per_socket: int; + max_cpu_id: int; + nr_cpus: int; + cpu_khz: int; + total_pages: int64; + free_pages: int64; + scrub_pages: int64; + nr_nodes: int; + hwcap: int32 array; + physcap: int32; +} + +type sched_credit = +{ + weight: int; + cap: int; +} + +external domain_make : create_info -> domid = "stub_xl_domain_make" +external domain_build : build_info -> domid -> build_state = "stub_xl_domain_b...

Changes v1-v2: - Remove restriction that BTRFS_IOC_GET_DEVICE_STATS is a privileged operation - Cast u64 to unsigned long long for printf() Changes v2-v3: - Rebased on Chris'' current master Changes v3-v4: - Add padding at end of ioctl structure Changes v4-v5: - The statistic members in the ioctl are now organized as an array of 64 bit values. Symbolic names for the array indexes

...E_DOM]<<(PAGE_SHIFT-10)); + avail_heap_pages(MEMZONE_XEN, -1) << (PAGE_SHIFT-10), + avail_heap_pages(MEMZONE_DMADOM, -1) <<(PAGE_SHIFT-10), + avail_heap_pages(MEMZONE_DOM, -1) <<(PAGE_SHIFT-10)); } @@ -805,6 +888,46 @@ unsigned long avail_scrub_pages(void) { return scrub_pages; } + +static unsigned long count_bucket(struct list_head* l, int order) +{ + unsigned long total_pages = 0; + int pages = 1 << order; + struct page_info *pg; + + list_for_each_entry(pg, l, list) + total_pages += pages; + + return total_...

This series implements ballooning for Xen on ARM and builds and Mukesh''s PVH privcmd stuff to implement foreign page mapping on ARM, replacing the old "HACK: initial (very hacky) XENMAPSPACE_gmfn_foreign" patch. The baseline is a bit complex, it is basically Stefano''s xenarm-forlinus branch (commit bbd6eb29214e) merged with Konrad''s linux-next-pvh branch

The series introduces auto-generation of the type definitions used in the libxl interface followed by auto-generation of a destructor function for each type. In the future it may be possible to use the related data structures for other purposes, for example auto-generation of the functions to marshal between C and language binding data types. tools/_libxl_types.h should be identical both before

With today''s build, my domain 0 crashes during boot when it tries to bring eth0 up (it''s an E100). cb->prev (eax) is NULL in e100_exec_cb() (e100.c:827). Just from code inspection, I don''t see how this can be. e100_alloc_cbs() was just called, which looks like it should have correctly linked up all the cb->prev/cb->next pointers. It happens regardless of

While testing raid-auto-repair patches I''m going to send out later, I just found the very last bug in my current scrub patch series: Changelog v4->v5: - fixed a deadlock when fixup is taking longer while scrub is about to end Original message follows: ------------------------ This patch set introduces two new features for scrub. They share the backref iteration code which is the