mirror of
https://github.com/SCST-project/scst.git
synced 2026-05-14 09:11:27 +00:00
scst: Move backports from scst.h to backport.h - step 2
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@6559 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Bart Van Assche
@@ -39,6 +39,15 @@
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#endif
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#endif
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/* <linux/blkdev.h> */
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|
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31)
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static inline unsigned int queue_max_hw_sectors(struct request_queue *q)
|
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{
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return q->max_hw_sectors;
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||||
}
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||||
#endif
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||||
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||||
/* <linux/compiler.h> */
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||||
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#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 20)
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@@ -218,12 +227,190 @@ typedef _Bool bool;
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#define false 0
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
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#ifndef swap
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#define swap(a, b) \
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do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
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#endif
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35) && \
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(!defined(RHEL_MAJOR) || RHEL_MAJOR -0 < 6 || \
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RHEL_MAJOR -0 == 6 && RHEL_MINOR -0 < 1)
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extern int hex_to_bin(char ch);
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 38)
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/*
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* See also "lib: hex2bin converts ascii hexadecimal string to binary" (commit
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* dc88e46029486ed475c71fe1bb696d39511ac8fe).
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*/
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static inline void hex2bin(u8 *dst, const char *src, size_t count)
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{
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while (count--) {
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*dst = hex_to_bin(*src++) << 4;
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*dst += hex_to_bin(*src++);
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dst++;
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}
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}
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#endif
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/* <linux/list.h> */
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#ifndef __list_for_each
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/* ToDo: cleanup when both are the same for all relevant kernels */
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#define __list_for_each list_for_each
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#endif
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/*
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* Returns true if entry is in its list. Entry must be deleted from the
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* list by using list_del_init()!
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*/
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static inline bool list_entry_in_list(const struct list_head *entry)
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{
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return !list_empty(entry);
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}
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/* <linux/lockdep.h> */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 32)
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#define lockdep_assert_held(l) do { (void)(l); } while (0)
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#endif
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/* <linux/preempt.h> */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 37)
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/*
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* See also patch "sched: Fix softirq time accounting" (commit ID
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* 75e1056f5c57050415b64cb761a3acc35d91f013).
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*/
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#ifndef in_serving_softirq
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#define in_serving_softirq() in_softirq()
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#endif
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#endif
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/* <linux/printk.h> */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 28)
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#ifndef pr_err
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#define pr_err(fmt, ...) printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
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#endif
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35)
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/*
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* See also patch "kernel.h: add pr_warn for symmetry to dev_warn,
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* netdev_warn" (commit fc62f2f19edf46c9bdbd1a54725b56b18c43e94f).
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*/
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#ifndef pr_warn
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#define pr_warn pr_warning
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#endif
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36) && \
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(!defined(RHEL_MAJOR) || RHEL_MAJOR -0 < 6)
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/*
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* See also patch "Add a dummy printk function for the maintenance of unused
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* printks" (commit 12fdff3fc2483f906ae6404a6e8dcf2550310b6f).
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*/
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static inline __attribute__ ((format (printf, 1, 2)))
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int no_printk(const char *s, ...) { return 0; }
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#endif
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/* <linux/sched.h> */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26) && \
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(!defined(RHEL_MAJOR) || RHEL_MAJOR -0 < 6)
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#define set_cpus_allowed_ptr(p, new_mask) set_cpus_allowed((p), *(new_mask))
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#endif
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/* <linux/scatterlist.h> */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24)
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/*
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* The macro's sg_page(), sg_virt(), sg_init_table(), sg_assign_page() and
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* sg_set_page() have been introduced in the 2.6.24 kernel. The definitions
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* below are backports of the 2.6.24 macro's for older kernels. There is one
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* exception however: when compiling SCST on a system with a pre-2.6.24 kernel
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* (e.g. RHEL 5.x) where the OFED kernel headers have been installed, do not
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* define the backported macro's because OFED has already defined these.
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*/
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static inline bool sg_is_chain(struct scatterlist *sg)
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{
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return false;
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}
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static inline struct scatterlist *sg_chain_ptr(struct scatterlist *sg)
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{
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return NULL;
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}
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#define sg_is_last(sg) false
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#ifndef sg_page
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static inline struct page *sg_page(struct scatterlist *sg)
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{
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return sg->page;
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}
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#endif
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static inline void *sg_virt(struct scatterlist *sg)
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{
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return page_address(sg_page(sg)) + sg->offset;
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}
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static inline void sg_mark_end(struct scatterlist *sg)
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{
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}
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#ifndef __BACKPORT_LINUX_SCATTERLIST_H_TO_2_6_23__
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static inline void sg_init_table(struct scatterlist *sgl, unsigned int nents)
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{
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memset(sgl, 0, sizeof(*sgl) * nents);
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}
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static inline void sg_assign_page(struct scatterlist *sg, struct page *page)
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{
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sg->page = page;
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}
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static inline void sg_set_page(struct scatterlist *sg, struct page *page,
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unsigned int len, unsigned int offset)
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{
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sg_assign_page(sg, page);
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sg->offset = offset;
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sg->length = len;
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}
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#ifndef for_each_sg
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/* See also commit 96b418c960af0d5c7185ff5c4af9376eb37ac9d3 */
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#define for_each_sg(sglist, sg, nr, __i) \
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for (__i = 0, sg = (sglist); __i < (nr); __i++, sg = sg_next_inline(sg))
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#endif /* for_each_sg */
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#endif /* __BACKPORT_LINUX_SCATTERLIST_H_TO_2_6_23__ */
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#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24) */
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/* <linux/slab.h> */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 22)
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#define KMEM_CACHE(__struct, __flags) kmem_cache_create(#__struct,\
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sizeof(struct __struct), __alignof__(struct __struct),\
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(__flags), NULL, NULL)
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#endif
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/* <linux/t10-pi.h> */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)
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struct t10_pi_tuple {
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__be16 guard_tag;
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__be16 app_tag;
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__be32 ref_tag;
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};
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#endif
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/* <linux/types.h> */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24)
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@@ -238,6 +425,54 @@ typedef unsigned long uintptr_t;
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char *kvasprintf(gfp_t gfp, const char *fmt, va_list ap);
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#endif
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/* <linux/vmalloc.h> */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 37) && \
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(!defined(RHEL_MAJOR) || RHEL_MAJOR -0 < 5 || \
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RHEL_MAJOR -0 == 5 && RHEL_MINOR -0 < 10 || \
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RHEL_MAJOR -0 == 6 && RHEL_MINOR -0 < 1)
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/*
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* See also patch "mm: add vzalloc() and vzalloc_node() helpers" (commit
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* e1ca7788dec6773b1a2bce51b7141948f2b8bccf).
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*/
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static inline void *vzalloc(unsigned long size)
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{
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return __vmalloc(size, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO,
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PAGE_KERNEL);
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}
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#endif
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/* <linux/workqueue.h> */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 23) && !defined(BACKPORT_LINUX_WORKQUEUE_TO_2_6_19)
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#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20))
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static inline int cancel_delayed_work_sync(struct delayed_work *work)
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{
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int res;
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res = cancel_delayed_work(work);
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flush_scheduled_work();
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return res;
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}
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#else
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/*
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* While cancel_delayed_work_sync() has not been defined in the vanilla kernel
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* 2.6.18 nor in 2.6.19 nor in RHEL/CentOS 5.0..5.5, a definition is available
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* in RHEL/CentOS 5.6. Unfortunately that definition is incompatible with what
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* we need. So define cancel_delayed_work() as a macro such that it overrides
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* the RHEL/CentOS 5.6 inline function definition in <linux/workqueue.h>.
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*/
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#define cancel_delayed_work_sync(work) \
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({ \
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int res; \
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\
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res = cancel_delayed_work((work)); \
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flush_scheduled_work(); \
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res; \
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})
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#endif
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#endif
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/* <scsi/scsi_cmnd.h> */
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24)
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@@ -77,90 +77,6 @@
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#include "scst_sgv.h"
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26) && \
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(!defined(RHEL_MAJOR) || RHEL_MAJOR -0 < 6)
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#define set_cpus_allowed_ptr(p, new_mask) set_cpus_allowed((p), *(new_mask))
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#endif
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29)
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||||
#ifndef swap
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#define swap(a, b) \
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do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31)
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||||
static inline unsigned int queue_max_hw_sectors(struct request_queue *q)
|
||||
{
|
||||
return q->max_hw_sectors;
|
||||
}
|
||||
#endif
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35)
|
||||
/*
|
||||
* See also patch "kernel.h: add pr_warn for symmetry to dev_warn,
|
||||
* netdev_warn" (commit fc62f2f19edf46c9bdbd1a54725b56b18c43e94f).
|
||||
*/
|
||||
#ifndef pr_warn
|
||||
#define pr_warn pr_warning
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 36) && \
|
||||
(!defined(RHEL_MAJOR) || RHEL_MAJOR -0 < 6)
|
||||
/*
|
||||
* See also patch "Add a dummy printk function for the maintenance of unused
|
||||
* printks" (commit 12fdff3fc2483f906ae6404a6e8dcf2550310b6f).
|
||||
*/
|
||||
static inline __attribute__ ((format (printf, 1, 2)))
|
||||
int no_printk(const char *s, ...) { return 0; }
|
||||
#endif
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 37)
|
||||
/*
|
||||
* See also patch "sched: Fix softirq time accounting" (commit ID
|
||||
* 75e1056f5c57050415b64cb761a3acc35d91f013).
|
||||
*/
|
||||
#ifndef in_serving_softirq
|
||||
#define in_serving_softirq() in_softirq()
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35) && \
|
||||
(!defined(RHEL_MAJOR) || RHEL_MAJOR -0 < 6 || \
|
||||
RHEL_MAJOR -0 == 6 && RHEL_MINOR -0 < 1)
|
||||
extern int hex_to_bin(char ch);
|
||||
#endif
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 38)
|
||||
/*
|
||||
* See also "lib: hex2bin converts ascii hexadecimal string to binary" (commit
|
||||
* dc88e46029486ed475c71fe1bb696d39511ac8fe).
|
||||
*/
|
||||
static inline void hex2bin(u8 *dst, const char *src, size_t count)
|
||||
{
|
||||
while (count--) {
|
||||
*dst = hex_to_bin(*src++) << 4;
|
||||
*dst += hex_to_bin(*src++);
|
||||
dst++;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef __list_for_each
|
||||
/* ToDo: cleanup when both are the same for all relevant kernels */
|
||||
#define __list_for_each list_for_each
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Returns true if entry is in its list. Entry must be deleted from the
|
||||
* list by using list_del_init()!
|
||||
*/
|
||||
static inline bool list_entry_in_list(const struct list_head *entry)
|
||||
{
|
||||
return !list_empty(entry);
|
||||
}
|
||||
|
||||
#define SCST_INTERFACE_VERSION \
|
||||
SCST_VERSION_STRING SCST_INTF_VER SCST_CONST_VERSION
|
||||
|
||||
@@ -590,15 +506,6 @@ enum scst_exec_context {
|
||||
|
||||
#endif
|
||||
|
||||
/*************************************************************
|
||||
** Kernel cache creation helper
|
||||
*************************************************************/
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 22)
|
||||
#define KMEM_CACHE(__struct, __flags) kmem_cache_create(#__struct,\
|
||||
sizeof(struct __struct), __alignof__(struct __struct),\
|
||||
(__flags), NULL, NULL)
|
||||
#endif
|
||||
|
||||
/*************************************************************
|
||||
** Valid_mask constants for scst_analyze_sense()
|
||||
*************************************************************/
|
||||
@@ -618,14 +525,6 @@ enum scst_exec_context {
|
||||
** T10-PI (DIF) support
|
||||
*************************************************************/
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 18, 0)
|
||||
struct t10_pi_tuple {
|
||||
__be16 guard_tag;
|
||||
__be16 app_tag;
|
||||
__be32 ref_tag;
|
||||
};
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Defines where and how to deal with DIF tags. Can be OR'ed to get
|
||||
* multilevel checks
|
||||
@@ -3818,11 +3717,7 @@ static inline bool scst_cmd_atomic(struct scst_cmd *cmd)
|
||||
*/
|
||||
if (unlikely((in_atomic() || in_interrupt() || irqs_disabled()) &&
|
||||
!res)) {
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 28)
|
||||
printk(KERN_ERR "ERROR: atomic context and non-atomic cmd!\n");
|
||||
#else
|
||||
pr_err("ERROR: atomic context and non-atomic cmd!\n");
|
||||
#endif
|
||||
dump_stack();
|
||||
cmd->atomic = 1;
|
||||
res = 1;
|
||||
@@ -4744,69 +4639,6 @@ static inline void scst_set_aen_delivery_status(struct scst_aen *aen,
|
||||
|
||||
void scst_aen_done(struct scst_aen *aen);
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24)
|
||||
|
||||
/*
|
||||
* The macro's sg_page(), sg_virt(), sg_init_table(), sg_assign_page() and
|
||||
* sg_set_page() have been introduced in the 2.6.24 kernel. The definitions
|
||||
* below are backports of the 2.6.24 macro's for older kernels. There is one
|
||||
* exception however: when compiling SCST on a system with a pre-2.6.24 kernel
|
||||
* (e.g. RHEL 5.x) where the OFED kernel headers have been installed, do not
|
||||
* define the backported macro's because OFED has already defined these.
|
||||
*/
|
||||
|
||||
static inline bool sg_is_chain(struct scatterlist *sg)
|
||||
{
|
||||
return false;
|
||||
}
|
||||
|
||||
static inline struct scatterlist *sg_chain_ptr(struct scatterlist *sg)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
#define sg_is_last(sg) false
|
||||
|
||||
#ifndef sg_page
|
||||
static inline struct page *sg_page(struct scatterlist *sg)
|
||||
{
|
||||
return sg->page;
|
||||
}
|
||||
#endif
|
||||
|
||||
static inline void *sg_virt(struct scatterlist *sg)
|
||||
{
|
||||
return page_address(sg_page(sg)) + sg->offset;
|
||||
}
|
||||
|
||||
static inline void sg_mark_end(struct scatterlist *sg)
|
||||
{
|
||||
}
|
||||
|
||||
#ifndef __BACKPORT_LINUX_SCATTERLIST_H_TO_2_6_23__
|
||||
|
||||
static inline void sg_init_table(struct scatterlist *sgl, unsigned int nents)
|
||||
{
|
||||
memset(sgl, 0, sizeof(*sgl) * nents);
|
||||
}
|
||||
|
||||
static inline void sg_assign_page(struct scatterlist *sg, struct page *page)
|
||||
{
|
||||
sg->page = page;
|
||||
}
|
||||
|
||||
static inline void sg_set_page(struct scatterlist *sg, struct page *page,
|
||||
unsigned int len, unsigned int offset)
|
||||
{
|
||||
sg_assign_page(sg, page);
|
||||
sg->offset = offset;
|
||||
sg->length = len;
|
||||
}
|
||||
|
||||
#endif /* __BACKPORT_LINUX_SCATTERLIST_H_TO_2_6_23__ */
|
||||
|
||||
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24) */
|
||||
|
||||
static inline struct scatterlist *__sg_next_inline(struct scatterlist *sg)
|
||||
{
|
||||
sg++;
|
||||
@@ -4824,18 +4656,6 @@ static inline struct scatterlist *sg_next_inline(struct scatterlist *sg)
|
||||
return __sg_next_inline(sg);
|
||||
}
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24)
|
||||
#ifndef __BACKPORT_LINUX_SCATTERLIST_H_TO_2_6_23__
|
||||
|
||||
#ifndef for_each_sg
|
||||
/* See also commit 96b418c960af0d5c7185ff5c4af9376eb37ac9d3 */
|
||||
#define for_each_sg(sglist, sg, nr, __i) \
|
||||
for (__i = 0, sg = (sglist); __i < (nr); __i++, sg = sg_next_inline(sg))
|
||||
#endif
|
||||
|
||||
#endif /* __BACKPORT_LINUX_SCATTERLIST_H_TO_2_6_23__ */
|
||||
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 24) */
|
||||
|
||||
static inline void sg_clear(struct scatterlist *sg)
|
||||
{
|
||||
memset(sg, 0, sizeof(*sg));
|
||||
@@ -5105,34 +4925,6 @@ static inline gfp_t scst_cmd_get_gfp_mask(struct scst_cmd *cmd)
|
||||
return cmd->cmd_gfp_mask;
|
||||
}
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 23) && !defined(BACKPORT_LINUX_WORKQUEUE_TO_2_6_19)
|
||||
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20))
|
||||
static inline int cancel_delayed_work_sync(struct delayed_work *work)
|
||||
{
|
||||
int res;
|
||||
|
||||
res = cancel_delayed_work(work);
|
||||
flush_scheduled_work();
|
||||
return res;
|
||||
}
|
||||
#else
|
||||
/*
|
||||
* While cancel_delayed_work_sync() has not been defined in the vanilla kernel
|
||||
* 2.6.18 nor in 2.6.19 nor in RHEL/CentOS 5.0..5.5, a definition is available
|
||||
* in RHEL/CentOS 5.6. Unfortunately that definition is incompatible with what
|
||||
* we need. So define cancel_delayed_work() as a macro such that it overrides
|
||||
* the RHEL/CentOS 5.6 inline function definition in <linux/workqueue.h>.
|
||||
*/
|
||||
#define cancel_delayed_work_sync(work) \
|
||||
({ \
|
||||
int res; \
|
||||
\
|
||||
res = cancel_delayed_work((work)); \
|
||||
flush_scheduled_work(); \
|
||||
res; \
|
||||
})
|
||||
#endif
|
||||
#endif
|
||||
|
||||
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 29) && defined(CONFIG_LOCKDEP)
|
||||
extern struct lockdep_map scst_suspend_dep_map;
|
||||
@@ -5585,21 +5377,6 @@ int scst_scsi_exec_async(struct scst_cmd *cmd, void *data,
|
||||
void (*done)(void *data, char *sense, int result, int resid));
|
||||
#endif
|
||||
|
||||
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 37) && \
|
||||
(!defined(RHEL_MAJOR) || RHEL_MAJOR -0 < 5 || \
|
||||
RHEL_MAJOR -0 == 5 && RHEL_MINOR -0 < 10 || \
|
||||
RHEL_MAJOR -0 == 6 && RHEL_MINOR -0 < 1)
|
||||
/*
|
||||
* See also patch "mm: add vzalloc() and vzalloc_node() helpers" (commit
|
||||
* e1ca7788dec6773b1a2bce51b7141948f2b8bccf).
|
||||
*/
|
||||
static inline void *vzalloc(unsigned long size)
|
||||
{
|
||||
return __vmalloc(size, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO,
|
||||
PAGE_KERNEL);
|
||||
}
|
||||
#endif
|
||||
|
||||
int scst_get_file_mode(const char *path);
|
||||
bool scst_parent_dir_exists(const char *path);
|
||||
|
||||
|
||||
Reference in New Issue
Block a user