#ifndef INCLUDE_XEN_OPS_H #define INCLUDE_XEN_OPS_H #include #include #include #include #include DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu); DECLARE_PER_CPU(uint32_t, xen_vcpu_id); static inline uint32_t xen_vcpu_nr(int cpu) { return per_cpu(xen_vcpu_id, cpu); } void xen_arch_pre_suspend(void); void xen_arch_post_suspend(int suspend_cancelled); void xen_timer_resume(void); void xen_arch_resume(void); void xen_arch_suspend(void); void xen_resume_notifier_register(struct notifier_block *nb); void xen_resume_notifier_unregister(struct notifier_block *nb); bool xen_vcpu_stolen(int vcpu); void xen_setup_runstate_info(int cpu); void xen_time_setup_guest(void); void xen_get_runstate_snapshot(struct vcpu_runstate_info *res); u64 xen_steal_clock(int cpu); int xen_setup_shutdown_event(void); extern unsigned long *xen_contiguous_bitmap; int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order, unsigned int address_bits, dma_addr_t *dma_handle); void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order); struct vm_area_struct; /* * xen_remap_domain_gfn_array() - map an array of foreign frames * @vma: VMA to map the pages into * @addr: Address at which to map the pages * @gfn: Array of GFNs to map * @nr: Number entries in the GFN array * @err_ptr: Returns per-GFN error status. * @prot: page protection mask * @domid: Domain owning the pages * @pages: Array of pages if this domain has an auto-translated physmap * * @gfn and @err_ptr may point to the same buffer, the GFNs will be * overwritten by the error codes after they are mapped. * * Returns the number of successfully mapped frames, or a -ve error * code. */ int xen_remap_domain_gfn_array(struct vm_area_struct *vma, unsigned long addr, xen_pfn_t *gfn, int nr, int *err_ptr, pgprot_t prot, unsigned domid, struct page **pages); /* xen_remap_domain_gfn_range() - map a range of foreign frames * @vma: VMA to map the pages into * @addr: Address at which to map the pages * @gfn: First GFN to map. * @nr: Number frames to map * @prot: page protection mask * @domid: Domain owning the pages * @pages: Array of pages if this domain has an auto-translated physmap * * Returns the number of successfully mapped frames, or a -ve error * code. */ int xen_remap_domain_gfn_range(struct vm_area_struct *vma, unsigned long addr, xen_pfn_t gfn, int nr, pgprot_t prot, unsigned domid, struct page **pages); int xen_unmap_domain_gfn_range(struct vm_area_struct *vma, int numpgs, struct page **pages); int xen_xlate_remap_gfn_array(struct vm_area_struct *vma, unsigned long addr, xen_pfn_t *gfn, int nr, int *err_ptr, pgprot_t prot, unsigned domid, struct page **pages); int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma, int nr, struct page **pages); int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr, unsigned long nr_grant_frames); bool xen_running_on_version_or_later(unsigned int major, unsigned int minor); efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc); efi_status_t xen_efi_set_time(efi_time_t *tm); efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending, efi_time_t *tm); efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm); efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor, u32 *attr, unsigned long *data_size, void *data); efi_status_t xen_efi_get_next_variable(unsigned long *name_size, efi_char16_t *name, efi_guid_t *vendor); efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor, u32 attr, unsigned long data_size, void *data); efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space, u64 *remaining_space, u64 *max_variable_size); efi_status_t xen_efi_get_next_high_mono_count(u32 *count); efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules, unsigned long count, unsigned long sg_list); efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules, unsigned long count, u64 *max_size, int *reset_type); #ifdef CONFIG_PREEMPT static inline void xen_preemptible_hcall_begin(void) { } static inline void xen_preemptible_hcall_end(void) { } #else DECLARE_PER_CPU(bool, xen_in_preemptible_hcall); static inline void xen_preemptible_hcall_begin(void) { __this_cpu_write(xen_in_preemptible_hcall, true); } static inline void xen_preemptible_hcall_end(void) { __this_cpu_write(xen_in_preemptible_hcall, false); } #endif /* CONFIG_PREEMPT */ #endif /* INCLUDE_XEN_OPS_H */ le>
authorChristoph Hellwig <hch@lst.de>2017-02-05 18:10:35 +0100
committerJens Axboe <axboe@fb.com>2017-02-06 09:34:46 -0700
commiteeeefd41843218c55a8782a6920f044d9bf6207a (patch)
treec342eac46626e62745aa8e1a982626efca8b121d /net/bridge/br_netlink.c
parentc14024dbb156c8392908aaa822097d27c6af8ec8 (diff)
block: don't try Write Same from __blkdev_issue_zeroout
Write Same can return an error asynchronously if it turns out the underlying SCSI device does not support Write Same, which makes a proper fallback to other methods in __blkdev_issue_zeroout impossible. Thus only issue a Write Same from blkdev_issue_zeroout an don't try it at all from __blkdev_issue_zeroout as a non-invasive workaround. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Fixes: e73c23ff ("block: add async variant of blkdev_issue_zeroout") Tested-by: Junichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'net/bridge/br_netlink.c')