void flush_kernel_dcache_range_asm(unsigned long, unsigned long);
void flush_kernel_dcache_page_asm(void *);
void flush_kernel_icache_page(void *);
-void flush_user_dcache_page(unsigned long);
-void flush_user_icache_page(unsigned long);
void flush_user_dcache_range(unsigned long, unsigned long);
void flush_user_icache_range(unsigned long, unsigned long);
void flush_cache_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end);
+/* defined in pacache.S exported in cache.c used by flush_anon_page */
+void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr);
+
#define ARCH_HAS_FLUSH_ANON_PAGE
static inline void
flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
{
if (PageAnon(page))
- flush_user_dcache_page(vmaddr);
+ flush_dcache_page_asm(page_to_phys(page), vmaddr);
}
#ifdef CONFIG_DEBUG_RODATA
#define _PAGE_NO_CACHE_BIT 24 /* (0x080) Uncached Page (U bit) */
#define _PAGE_ACCESSED_BIT 23 /* (0x100) Software: Page Accessed */
#define _PAGE_PRESENT_BIT 22 /* (0x200) Software: translation valid */
-#define _PAGE_FLUSH_BIT 21 /* (0x400) Software: translation valid */
- /* for cache flushing only */
+/* bit 21 was formerly the FLUSH bit but is now unused */
#define _PAGE_USER_BIT 20 /* (0x800) Software: User accessible page */
/* N.B. The bits are defined in terms of a 32 bit word above, so the */
#define _PAGE_NO_CACHE (1 << xlate_pabit(_PAGE_NO_CACHE_BIT))
#define _PAGE_ACCESSED (1 << xlate_pabit(_PAGE_ACCESSED_BIT))
#define _PAGE_PRESENT (1 << xlate_pabit(_PAGE_PRESENT_BIT))
-#define _PAGE_FLUSH (1 << xlate_pabit(_PAGE_FLUSH_BIT))
#define _PAGE_USER (1 << xlate_pabit(_PAGE_USER_BIT))
#define _PAGE_FILE (1 << xlate_pabit(_PAGE_FILE_BIT))
#define PAGE_KERNEL_RO __pgprot(_PAGE_KERNEL & ~_PAGE_WRITE)
#define PAGE_KERNEL_UNC __pgprot(_PAGE_KERNEL | _PAGE_NO_CACHE)
#define PAGE_GATEWAY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_GATEWAY| _PAGE_READ)
-#define PAGE_FLUSH __pgprot(_PAGE_FLUSH)
/*
#define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
-#define pte_none(x) ((pte_val(x) == 0) || (pte_val(x) & _PAGE_FLUSH))
+#define pte_none(x) (pte_val(x) == 0)
#define pte_present(x) (pte_val(x) & _PAGE_PRESENT)
#define pte_clear(mm,addr,xp) do { pte_val(*(xp)) = 0; } while (0)
static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
pte_t old_pte;
- pte_t pte;
spin_lock(&pa_dbit_lock);
- pte = old_pte = *ptep;
- pte_val(pte) &= ~_PAGE_PRESENT;
- pte_val(pte) |= _PAGE_FLUSH;
- set_pte_at(mm,addr,ptep,pte);
+ old_pte = *ptep;
+ pte_clear(mm,addr,ptep);
spin_unlock(&pa_dbit_lock);
return old_pte;
#include <asm/pgalloc.h>
#include <asm/processor.h>
#include <asm/sections.h>
+#include <asm/shmparam.h>
int split_tlb __read_mostly;
int dcache_stride __read_mostly;
int icache_stride __read_mostly;
EXPORT_SYMBOL(dcache_stride);
+void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr);
+EXPORT_SYMBOL(flush_dcache_page_asm);
+void flush_icache_page_asm(unsigned long phys_addr, unsigned long vaddr);
+
/* On some machines (e.g. ones with the Merced bus), there can be
* only a single PxTLB broadcast at a time; this must be guaranteed
panic("SpaceID hashing is still on!\n");
}
-/* Simple function to work out if we have an existing address translation
- * for a user space vma. */
-static inline int translation_exists(struct vm_area_struct *vma,
- unsigned long addr, unsigned long pfn)
-{
- pgd_t *pgd = pgd_offset(vma->vm_mm, addr);
- pmd_t *pmd;
- pte_t pte;
-
- if(pgd_none(*pgd))
- return 0;
-
- pmd = pmd_offset(pgd, addr);
- if(pmd_none(*pmd) || pmd_bad(*pmd))
- return 0;
-
- /* We cannot take the pte lock here: flush_cache_page is usually
- * called with pte lock already held. Whereas flush_dcache_page
- * takes flush_dcache_mmap_lock, which is lower in the hierarchy:
- * the vma itself is secure, but the pte might come or go racily.
- */
- pte = *pte_offset_map(pmd, addr);
- /* But pte_unmap() does nothing on this architecture */
-
- /* Filter out coincidental file entries and swap entries */
- if (!(pte_val(pte) & (_PAGE_FLUSH|_PAGE_PRESENT)))
- return 0;
-
- return pte_pfn(pte) == pfn;
-}
-
-/* Private function to flush a page from the cache of a non-current
- * process. cr25 contains the Page Directory of the current user
- * process; we're going to hijack both it and the user space %sr3 to
- * temporarily make the non-current process current. We have to do
- * this because cache flushing may cause a non-access tlb miss which
- * the handlers have to fill in from the pgd of the non-current
- * process. */
static inline void
-flush_user_cache_page_non_current(struct vm_area_struct *vma,
- unsigned long vmaddr)
+__flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr,
+ unsigned long physaddr)
{
- /* save the current process space and pgd */
- unsigned long space = mfsp(3), pgd = mfctl(25);
-
- /* we don't mind taking interrupts since they may not
- * do anything with user space, but we can't
- * be preempted here */
- preempt_disable();
-
- /* make us current */
- mtctl(__pa(vma->vm_mm->pgd), 25);
- mtsp(vma->vm_mm->context, 3);
-
- flush_user_dcache_page(vmaddr);
- if(vma->vm_flags & VM_EXEC)
- flush_user_icache_page(vmaddr);
-
- /* put the old current process back */
- mtsp(space, 3);
- mtctl(pgd, 25);
- preempt_enable();
-}
-
-
-static inline void
-__flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr)
-{
- if (likely(vma->vm_mm->context == mfsp(3))) {
- flush_user_dcache_page(vmaddr);
- if (vma->vm_flags & VM_EXEC)
- flush_user_icache_page(vmaddr);
- } else {
- flush_user_cache_page_non_current(vma, vmaddr);
- }
+ flush_dcache_page_asm(physaddr, vmaddr);
+ if (vma->vm_flags & VM_EXEC)
+ flush_icache_page_asm(physaddr, vmaddr);
}
void flush_dcache_page(struct page *page)
struct vm_area_struct *mpnt;
struct prio_tree_iter iter;
unsigned long offset;
- unsigned long addr;
+ unsigned long addr, old_addr = 0;
pgoff_t pgoff;
- unsigned long pfn = page_to_pfn(page);
-
if (mapping && !mapping_mapped(mapping)) {
set_bit(PG_dcache_dirty, &page->flags);
offset = (pgoff - mpnt->vm_pgoff) << PAGE_SHIFT;
addr = mpnt->vm_start + offset;
- /* Flush instructions produce non access tlb misses.
- * On PA, we nullify these instructions rather than
- * taking a page fault if the pte doesn't exist.
- * This is just for speed. If the page translation
- * isn't there, there's no point exciting the
- * nadtlb handler into a nullification frenzy.
- *
- * Make sure we really have this page: the private
- * mappings may cover this area but have COW'd this
- * particular page.
- */
- if (translation_exists(mpnt, addr, pfn)) {
- __flush_cache_page(mpnt, addr);
- break;
+ if (old_addr == 0 || (old_addr & (SHMLBA - 1)) != (addr & (SHMLBA - 1))) {
+ __flush_cache_page(mpnt, addr, page_to_phys(page));
+ if (old_addr)
+ printk(KERN_ERR "INEQUIVALENT ALIASES 0x%lx and 0x%lx in file %s\n", old_addr, addr, mpnt->vm_file ? mpnt->vm_file->f_path.dentry->d_name.name : "(null)");
+ old_addr = addr;
}
}
flush_dcache_mmap_unlock(mapping);
{
BUG_ON(!vma->vm_mm->context);
- if (likely(translation_exists(vma, vmaddr, pfn)))
- __flush_cache_page(vma, vmaddr);
+ __flush_cache_page(vma, vmaddr, page_to_phys(pfn_to_page(pfn)));
}
#ifndef CONFIG_64BIT
/*
* naitlb miss interruption handler (parisc 1.1 - 32 bit)
- *
- * Note: naitlb misses will be treated
- * as an ordinary itlb miss for now.
- * However, note that naitlb misses
- * have the faulting address in the
- * IOR/ISR.
*/
.macro naitlb_11 code
mfctl %isr,spc
- b itlb_miss_11
+ b naitlb_miss_11
mfctl %ior,va
- /* FIXME: If user causes a naitlb miss, the priv level may not be in
- * lower bits of va, where the itlb miss handler is expecting them
- */
.align 32
.endm
/*
* naitlb miss interruption handler (parisc 2.0)
- *
- * Note: naitlb misses will be treated
- * as an ordinary itlb miss for now.
- * However, note that naitlb misses
- * have the faulting address in the
- * IOR/ISR.
*/
.macro naitlb_20 code
mfctl %isr,spc
#ifdef CONFIG_64BIT
- b itlb_miss_20w
+ b naitlb_miss_20w
#else
- b itlb_miss_20
+ b naitlb_miss_20
#endif
mfctl %ior,va
- /* FIXME: If user causes a naitlb miss, the priv level may not be in
- * lower bits of va, where the itlb miss handler is expecting them
- */
.align 32
.endm
copy \va,\tmp1
depi 0,31,23,\tmp1
cmpb,COND(<>),n \tmp,\tmp1,\fault
- ldi (_PAGE_DIRTY|_PAGE_WRITE|_PAGE_READ),\prot
+ mfctl %cr19,\tmp /* iir */
+ /* get the opcode (first six bits) into \tmp */
+ extrw,u \tmp,5,6,\tmp
+ /*
+ * Only setting the T bit prevents data cache movein
+ * Setting access rights to zero prevents instruction cache movein
+ *
+ * Note subtlety here: _PAGE_GATEWAY, _PAGE_EXEC and _PAGE_WRITE go
+ * to type field and _PAGE_READ goes to top bit of PL1
+ */
+ ldi (_PAGE_REFTRAP|_PAGE_READ|_PAGE_WRITE),\prot
+ /*
+ * so if the opcode is one (i.e. this is a memory management
+ * instruction) nullify the next load so \prot is only T.
+ * Otherwise this is a normal data operation
+ */
+ cmpiclr,= 0x01,\tmp,%r0
+ ldi (_PAGE_DIRTY|_PAGE_READ|_PAGE_WRITE),\prot
depd,z \prot,8,7,\prot
/*
* OK, it is in the temp alias region, check whether "from" or "to".
def 13
def 14
dtlb_20 15
-#if 0
naitlb_20 16
-#else
- def 16
-#endif
nadtlb_20 17
def 18
def 19
def 13
def 14
dtlb_11 15
-#if 0
naitlb_11 16
-#else
- def 16
-#endif
nadtlb_11 17
def 18
def 19
get_pgd spc,ptp
space_check spc,t0,nadtlb_fault
- L3_ptep ptp,pte,t0,va,nadtlb_check_flush_20w
+ L3_ptep ptp,pte,t0,va,nadtlb_check_alias_20w
update_ptep ptp,pte,t0,t1
rfir
nop
-nadtlb_check_flush_20w:
- bb,>=,n pte,_PAGE_FLUSH_BIT,nadtlb_emulate
-
- /* Insert a "flush only" translation */
-
- depdi,z 7,7,3,prot
- depdi 1,10,1,prot
-
- /* Drop prot bits from pte and convert to page addr for idtlbt */
- convert_for_tlb_insert20 pte
+nadtlb_check_alias_20w:
+ do_alias spc,t0,t1,va,pte,prot,nadtlb_emulate
idtlbt pte,prot
nop
dtlb_check_alias_11:
-
- /* Check to see if fault is in the temporary alias region */
-
- cmpib,<>,n 0,spc,dtlb_fault /* forward */
- ldil L%(TMPALIAS_MAP_START),t0
- copy va,t1
- depwi 0,31,23,t1
- cmpb,<>,n t0,t1,dtlb_fault /* forward */
- ldi (_PAGE_DIRTY|_PAGE_WRITE|_PAGE_READ),prot
- depw,z prot,8,7,prot
-
- /*
- * OK, it is in the temp alias region, check whether "from" or "to".
- * Check "subtle" note in pacache.S re: r23/r26.
- */
-
- extrw,u,= va,9,1,r0
- or,tr %r23,%r0,pte /* If "from" use "from" page */
- or %r26,%r0,pte /* else "to", use "to" page */
+ do_alias spc,t0,t1,va,pte,prot,dtlb_fault
idtlba pte,(va)
idtlbp prot,(va)
space_check spc,t0,nadtlb_fault
- L2_ptep ptp,pte,t0,va,nadtlb_check_flush_11
+ L2_ptep ptp,pte,t0,va,nadtlb_check_alias_11
update_ptep ptp,pte,t0,t1
rfir
nop
-nadtlb_check_flush_11:
- bb,>=,n pte,_PAGE_FLUSH_BIT,nadtlb_emulate
-
- /* Insert a "flush only" translation */
-
- zdepi 7,7,3,prot
- depi 1,10,1,prot
+nadtlb_check_alias_11:
+ do_alias spc,t0,t1,va,pte,prot,nadtlb_emulate
- /* Get rid of prot bits and convert to page addr for idtlba */
-
- depi 0,31,ASM_PFN_PTE_SHIFT,pte
- SHRREG pte,(ASM_PFN_PTE_SHIFT-(31-26)),pte
-
- mfsp %sr1,t0 /* Save sr1 so we can use it in tlb inserts */
- mtsp spc,%sr1
-
- idtlba pte,(%sr1,va)
- idtlbp prot,(%sr1,va)
-
- mtsp t0, %sr1 /* Restore sr1 */
+ idtlba pte,(va)
+ idtlbp prot,(va)
rfir
nop
space_check spc,t0,nadtlb_fault
- L2_ptep ptp,pte,t0,va,nadtlb_check_flush_20
+ L2_ptep ptp,pte,t0,va,nadtlb_check_alias_20
update_ptep ptp,pte,t0,t1
rfir
nop
-nadtlb_check_flush_20:
- bb,>=,n pte,_PAGE_FLUSH_BIT,nadtlb_emulate
-
- /* Insert a "flush only" translation */
-
- depdi,z 7,7,3,prot
- depdi 1,10,1,prot
-
- /* Drop prot bits from pte and convert to page addr for idtlbt */
- convert_for_tlb_insert20 pte
+nadtlb_check_alias_20:
+ do_alias spc,t0,t1,va,pte,prot,nadtlb_emulate
idtlbt pte,prot
rfir
nop
+
#endif
nadtlb_emulate:
rfir
nop
+naitlb_miss_20w:
+
+ /*
+ * I miss is a little different, since we allow users to fault
+ * on the gateway page which is in the kernel address space.
+ */
+
+ space_adjust spc,va,t0
+ get_pgd spc,ptp
+ space_check spc,t0,naitlb_fault
+
+ L3_ptep ptp,pte,t0,va,naitlb_check_alias_20w
+
+ update_ptep ptp,pte,t0,t1
+
+ make_insert_tlb spc,pte,prot
+
+ iitlbt pte,prot
+
+ rfir
+ nop
+
+naitlb_check_alias_20w:
+ do_alias spc,t0,t1,va,pte,prot,naitlb_fault
+
+ iitlbt pte,prot
+
+ rfir
+ nop
+
#else
itlb_miss_11:
rfir
nop
+naitlb_miss_11:
+ get_pgd spc,ptp
+
+ space_check spc,t0,naitlb_fault
+
+ L2_ptep ptp,pte,t0,va,naitlb_check_alias_11
+
+ update_ptep ptp,pte,t0,t1
+
+ make_insert_tlb_11 spc,pte,prot
+
+ mfsp %sr1,t0 /* Save sr1 so we can use it in tlb inserts */
+ mtsp spc,%sr1
+
+ iitlba pte,(%sr1,va)
+ iitlbp prot,(%sr1,va)
+
+ mtsp t0, %sr1 /* Restore sr1 */
+
+ rfir
+ nop
+
+naitlb_check_alias_11:
+ do_alias spc,t0,t1,va,pte,prot,itlb_fault
+
+ iitlba pte,(%sr0, va)
+ iitlbp prot,(%sr0, va)
+
+ rfir
+ nop
+
+
itlb_miss_20:
get_pgd spc,ptp
rfir
nop
+naitlb_miss_20:
+ get_pgd spc,ptp
+
+ space_check spc,t0,naitlb_fault
+
+ L2_ptep ptp,pte,t0,va,naitlb_check_alias_20
+
+ update_ptep ptp,pte,t0,t1
+
+ make_insert_tlb spc,pte,prot
+
+ f_extend pte,t0
+
+ iitlbt pte,prot
+
+ rfir
+ nop
+
+naitlb_check_alias_20:
+ do_alias spc,t0,t1,va,pte,prot,naitlb_fault
+
+ iitlbt pte,prot
+
+ rfir
+ nop
+
#endif
#ifdef CONFIG_64BIT
b intr_save
ldi 17,%r8
+naitlb_fault:
+ b intr_save
+ ldi 16,%r8
+
dtlb_fault:
b intr_save
ldi 15,%r8
.procend
ENDPROC(__clear_user_page_asm)
-ENTRY(flush_kernel_dcache_page_asm)
+ENTRY(flush_dcache_page_asm)
.proc
.callinfo NO_CALLS
.entry
+ ldil L%(TMPALIAS_MAP_START), %r28
+#ifdef CONFIG_64BIT
+#if (TMPALIAS_MAP_START >= 0x80000000)
+ depdi 0, 31,32, %r28 /* clear any sign extension */
+ /* FIXME: page size dependend */
+#endif
+ extrd,u %r26, 56,32, %r26 /* convert phys addr to tlb insert format */
+ depd %r25, 63,22, %r28 /* Form aliased virtual address 'to' */
+ depdi 0, 63,12, %r28 /* Clear any offset bits */
+#else
+ extrw,u %r26, 24,25, %r26 /* convert phys addr to tlb insert format */
+ depw %r25, 31,22, %r28 /* Form aliased virtual address 'to' */
+ depwi 0, 31,12, %r28 /* Clear any offset bits */
+#endif
+
+ /* Purge any old translation */
+
+ pdtlb 0(%r28)
+
ldil L%dcache_stride, %r1
- ldw R%dcache_stride(%r1), %r23
+ ldw R%dcache_stride(%r1), %r1
#ifdef CONFIG_64BIT
depdi,z 1, 63-PAGE_SHIFT,1, %r25
#else
depwi,z 1, 31-PAGE_SHIFT,1, %r25
#endif
- add %r26, %r25, %r25
- sub %r25, %r23, %r25
-
-
-1: fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- cmpb,COND(<<) %r26, %r25,1b
- fdc,m %r23(%r26)
+ add %r28, %r25, %r25
+ sub %r25, %r1, %r25
+
+
+1: fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ fdc,m %r1(%r28)
+ cmpb,COND(<<) %r28, %r25,1b
+ fdc,m %r1(%r28)
sync
bv %r0(%r2)
- nop
+ pdtlb (%r25)
.exit
.procend
-ENDPROC(flush_kernel_dcache_page_asm)
-
-ENTRY(flush_user_dcache_page)
+ENDPROC(flush_dcache_page_asm)
+
+ENTRY(flush_icache_page_asm)
.proc
.callinfo NO_CALLS
.entry
- ldil L%dcache_stride, %r1
- ldw R%dcache_stride(%r1), %r23
-
+ ldil L%(TMPALIAS_MAP_START), %r28
#ifdef CONFIG_64BIT
- depdi,z 1,63-PAGE_SHIFT,1, %r25
+#if (TMPALIAS_MAP_START >= 0x80000000)
+ depdi 0, 31,32, %r28 /* clear any sign extension */
+ /* FIXME: page size dependend */
+#endif
+ extrd,u %r26, 56,32, %r26 /* convert phys addr to tlb insert format */
+ depd %r25, 63,22, %r28 /* Form aliased virtual address 'to' */
+ depdi 0, 63,12, %r28 /* Clear any offset bits */
#else
- depwi,z 1,31-PAGE_SHIFT,1, %r25
+ extrw,u %r26, 24,25, %r26 /* convert phys addr to tlb insert format */
+ depw %r25, 31,22, %r28 /* Form aliased virtual address 'to' */
+ depwi 0, 31,12, %r28 /* Clear any offset bits */
#endif
- add %r26, %r25, %r25
- sub %r25, %r23, %r25
+ /* Purge any old translation */
-1: fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- fdc,m %r23(%sr3, %r26)
- cmpb,COND(<<) %r26, %r25,1b
- fdc,m %r23(%sr3, %r26)
+ pitlb (%sr0,%r28)
+
+ ldil L%icache_stride, %r1
+ ldw R%icache_stride(%r1), %r1
+
+#ifdef CONFIG_64BIT
+ depdi,z 1, 63-PAGE_SHIFT,1, %r25
+#else
+ depwi,z 1, 31-PAGE_SHIFT,1, %r25
+#endif
+ add %r28, %r25, %r25
+ sub %r25, %r1, %r25
+
+
+1: fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ fic,m %r1(%r28)
+ cmpb,COND(<<) %r28, %r25,1b
+ fic,m %r1(%r28)
sync
bv %r0(%r2)
- nop
+ pitlb (%sr0,%r25)
.exit
.procend
-ENDPROC(flush_user_dcache_page)
+ENDPROC(flush_icache_page_asm)
-ENTRY(flush_user_icache_page)
+ENTRY(flush_kernel_dcache_page_asm)
.proc
.callinfo NO_CALLS
.entry
sub %r25, %r23, %r25
-1: fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
- fic,m %r23(%sr3, %r26)
+1: fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
+ fdc,m %r23(%r26)
cmpb,COND(<<) %r26, %r25,1b
- fic,m %r23(%sr3, %r26)
+ fdc,m %r23(%r26)
sync
bv %r0(%r2)
.exit
.procend
-ENDPROC(flush_user_icache_page)
-
+ENDPROC(flush_kernel_dcache_page_asm)
ENTRY(purge_kernel_dcache_page)
.proc
.procend
ENDPROC(purge_kernel_dcache_page)
-#if 0
- /* Currently not used, but it still is a possible alternate
- * solution.
- */
-
-ENTRY(flush_alias_page)
- .proc
- .callinfo NO_CALLS
- .entry
-
- tophys_r1 %r26
-
- ldil L%(TMPALIAS_MAP_START), %r28
-#ifdef CONFIG_64BIT
- extrd,u %r26, 56,32, %r26 /* convert phys addr to tlb insert format */
- depd %r25, 63,22, %r28 /* Form aliased virtual address 'to' */
- depdi 0, 63,12, %r28 /* Clear any offset bits */
-#else
- extrw,u %r26, 24,25, %r26 /* convert phys addr to tlb insert format */
- depw %r25, 31,22, %r28 /* Form aliased virtual address 'to' */
- depwi 0, 31,12, %r28 /* Clear any offset bits */
-#endif
-
- /* Purge any old translation */
-
- pdtlb 0(%r28)
-
- ldil L%dcache_stride, %r1
- ldw R%dcache_stride(%r1), %r23
-
-#ifdef CONFIG_64BIT
- depdi,z 1, 63-PAGE_SHIFT,1, %r29
-#else
- depwi,z 1, 31-PAGE_SHIFT,1, %r29
-#endif
- add %r28, %r29, %r29
- sub %r29, %r23, %r29
-
-1: fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- cmpb,COND(<<) %r28, %r29, 1b
- fdc,m %r23(%r28)
-
- sync
- bv %r0(%r2)
- nop
- .exit
-
- .procend
-#endif
.export flush_user_dcache_range_asm
.exit
.procend
-ENDPROC(flush_alias_page)
ENTRY(flush_kernel_dcache_range_asm)
.proc
* tree of blkg (instead of traversing through hash list all
* the time.
*/
- tg = tg_of_blkg(blkiocg_lookup_group(blkcg, key));
+
+ /*
+ * This is the common case when there are no blkio cgroups.
+ * Avoid lookup in this case
+ */
+ if (blkcg == &blkio_root_cgroup)
+ tg = &td->root_tg;
+ else
+ tg = tg_of_blkg(blkiocg_lookup_group(blkcg, key));
/* Fill in device details for root group */
if (tg && !tg->blkg.dev && bdi->dev && dev_name(bdi->dev)) {
}
static inline unsigned
-cfq_scaled_group_slice(struct cfq_data *cfqd, struct cfq_queue *cfqq)
+cfq_scaled_cfqq_slice(struct cfq_data *cfqd, struct cfq_queue *cfqq)
{
unsigned slice = cfq_prio_to_slice(cfqd, cfqq);
if (cfqd->cfq_latency) {
static inline void
cfq_set_prio_slice(struct cfq_data *cfqd, struct cfq_queue *cfqq)
{
- unsigned slice = cfq_scaled_group_slice(cfqd, cfqq);
+ unsigned slice = cfq_scaled_cfqq_slice(cfqd, cfqq);
cfqq->slice_start = jiffies;
cfqq->slice_end = jiffies + slice;
*/
if (timed_out) {
if (cfq_cfqq_slice_new(cfqq))
- cfqq->slice_resid = cfq_scaled_group_slice(cfqd, cfqq);
+ cfqq->slice_resid = cfq_scaled_cfqq_slice(cfqd, cfqq);
else
cfqq->slice_resid = cfqq->slice_end - jiffies;
cfq_log_cfqq(cfqd, cfqq, "resid=%ld", cfqq->slice_resid);
{
struct cfq_io_context *cic = cfqd->active_cic;
+ /* If the queue already has requests, don't wait */
+ if (!RB_EMPTY_ROOT(&cfqq->sort_list))
+ return false;
+
/* If there are other queues in the group, don't wait */
if (cfqq->cfqg->nr_cfqq > 1)
return false;
obj-$(CONFIG_BLK_DEV_DRBD) += drbd/
obj-$(CONFIG_BLK_DEV_RBD) += rbd.o
-swim_mod-objs := swim.o swim_asm.o
+swim_mod-y := swim.o swim_asm.o
#
obj-$(CONFIG_ATA_OVER_ETH) += aoe.o
-aoe-objs := aoeblk.o aoechr.o aoecmd.o aoedev.o aoemain.o aoenet.o
+aoe-y := aoeblk.o aoechr.o aoecmd.o aoedev.o aoemain.o aoenet.o
sector_t total_size;
InquiryData_struct *inq_buff = NULL;
- for (logvol = 0; logvol < CISS_MAX_LUN; logvol++) {
+ for (logvol = 0; logvol <= h->highest_lun; logvol++) {
if (!h->drv[logvol])
continue;
if (memcmp(h->drv[logvol]->LunID, drv->LunID,
static void loop_free(struct loop_device *lo)
{
+ if (!lo->lo_queue->queue_lock)
+ lo->lo_queue->queue_lock = &lo->lo_queue->__queue_lock;
+
blk_cleanup_queue(lo->lo_queue);
put_disk(lo->lo_disk);
list_del(&lo->lo_list);
}
ENSURE(drive_status, CDC_DRIVE_STATUS );
- ENSURE(media_changed, CDC_MEDIA_CHANGED);
+ if (cdo->check_events == NULL && cdo->media_changed == NULL)
+ *change_capability = ~(CDC_MEDIA_CHANGED | CDC_SELECT_DISC);
ENSURE(tray_move, CDC_CLOSE_TRAY | CDC_OPEN_TRAY);
ENSURE(lock_door, CDC_LOCK);
ENSURE(select_speed, CDC_SELECT_SPEED);
mddev_t *mddev = q->queuedata;
int rv;
int cpu;
+ unsigned int sectors;
if (mddev == NULL || mddev->pers == NULL
|| !mddev->ready) {
atomic_inc(&mddev->active_io);
rcu_read_unlock();
+ /*
+ * save the sectors now since our bio can
+ * go away inside make_request
+ */
+ sectors = bio_sectors(bio);
rv = mddev->pers->make_request(mddev, bio);
cpu = part_stat_lock();
part_stat_inc(cpu, &mddev->gendisk->part0, ios[rw]);
- part_stat_add(cpu, &mddev->gendisk->part0, sectors[rw],
- bio_sectors(bio));
+ part_stat_add(cpu, &mddev->gendisk->part0, sectors[rw], sectors);
part_stat_unlock();
if (atomic_dec_and_test(&mddev->active_io) && mddev->suspended)
__bdevname(dev, b));
return PTR_ERR(bdev);
}
- if (!shared)
- set_bit(AllReserved, &rdev->flags);
rdev->bdev = bdev;
return err;
}
if (rdev->raid_disk != -1)
return -EBUSY;
+ if (test_bit(MD_RECOVERY_RUNNING, &rdev->mddev->recovery))
+ return -EBUSY;
+
if (rdev->mddev->pers->hot_add_disk == NULL)
return -EINVAL;
mddev_lock(mddev);
list_for_each_entry(rdev2, &mddev->disks, same_set)
- if (test_bit(AllReserved, &rdev2->flags) ||
- (rdev->bdev == rdev2->bdev &&
- rdev != rdev2 &&
- overlaps(rdev->data_offset, rdev->sectors,
- rdev2->data_offset,
- rdev2->sectors))) {
+ if (rdev->bdev == rdev2->bdev &&
+ rdev != rdev2 &&
+ overlaps(rdev->data_offset, rdev->sectors,
+ rdev2->data_offset,
+ rdev2->sectors)) {
overlap = 1;
break;
}
mddev->delta_disks = raid_disks - mddev->raid_disks;
rv = mddev->pers->check_reshape(mddev);
+ if (rv < 0)
+ mddev->delta_disks = 0;
return rv;
}
} else if (test_bit(MD_RECOVERY_REQUESTED, &mddev->recovery))
mddev->resync_min = mddev->curr_resync_completed;
mddev->curr_resync = 0;
- if (!test_bit(MD_RECOVERY_INTR, &mddev->recovery))
- mddev->curr_resync_completed = 0;
- sysfs_notify(&mddev->kobj, NULL, "sync_completed");
wake_up(&resync_wait);
set_bit(MD_RECOVERY_DONE, &mddev->recovery);
md_wakeup_thread(mddev->thread);
}
}
- if (mddev->degraded && ! mddev->ro && !mddev->recovery_disabled) {
+ if (mddev->degraded && !mddev->recovery_disabled) {
list_for_each_entry(rdev, &mddev->disks, same_set) {
if (rdev->raid_disk >= 0 &&
!test_bit(In_sync, &rdev->flags) &&
/* Only thing we do on a ro array is remove
* failed devices.
*/
- remove_and_add_spares(mddev);
+ mdk_rdev_t *rdev;
+ list_for_each_entry(rdev, &mddev->disks, same_set)
+ if (rdev->raid_disk >= 0 &&
+ !test_bit(Blocked, &rdev->flags) &&
+ test_bit(Faulty, &rdev->flags) &&
+ atomic_read(&rdev->nr_pending)==0) {
+ if (mddev->pers->hot_remove_disk(
+ mddev, rdev->raid_disk)==0) {
+ char nm[20];
+ sprintf(nm,"rd%d", rdev->raid_disk);
+ sysfs_remove_link(&mddev->kobj, nm);
+ rdev->raid_disk = -1;
+ }
+ }
clear_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
goto unlock;
}
#define Faulty 1 /* device is known to have a fault */
#define In_sync 2 /* device is in_sync with rest of array */
#define WriteMostly 4 /* Avoid reading if at all possible */
-#define AllReserved 6 /* If whole device is reserved for
- * one array */
#define AutoDetected 7 /* added by auto-detect */
#define Blocked 8 /* An error occured on an externally
* managed array, don't allow writes
rdev1->new_raid_disk = j;
}
+ if (mddev->level == 1) {
+ /* taiking over a raid1 array-
+ * we have only one active disk
+ */
+ j = 0;
+ rdev1->new_raid_disk = j;
+ }
+
if (j < 0 || j >= mddev->raid_disks) {
printk(KERN_ERR "md/raid0:%s: bad disk number %d - "
"aborting!\n", mdname(mddev), j);
return priv_conf;
}
+static void *raid0_takeover_raid1(mddev_t *mddev)
+{
+ raid0_conf_t *priv_conf;
+
+ /* Check layout:
+ * - (N - 1) mirror drives must be already faulty
+ */
+ if ((mddev->raid_disks - 1) != mddev->degraded) {
+ printk(KERN_ERR "md/raid0:%s: (N - 1) mirrors drives must be already faulty!\n",
+ mdname(mddev));
+ return ERR_PTR(-EINVAL);
+ }
+
+ /* Set new parameters */
+ mddev->new_level = 0;
+ mddev->new_layout = 0;
+ mddev->new_chunk_sectors = 128; /* by default set chunk size to 64k */
+ mddev->delta_disks = 1 - mddev->raid_disks;
+ /* make sure it will be not marked as dirty */
+ mddev->recovery_cp = MaxSector;
+
+ create_strip_zones(mddev, &priv_conf);
+ return priv_conf;
+}
+
static void *raid0_takeover(mddev_t *mddev)
{
/* raid0 can take over:
* raid4 - if all data disks are active.
* raid5 - providing it is Raid4 layout and one disk is faulty
* raid10 - assuming we have all necessary active disks
+ * raid1 - with (N -1) mirror drives faulty
*/
if (mddev->level == 4)
return raid0_takeover_raid45(mddev);
if (mddev->level == 10)
return raid0_takeover_raid10(mddev);
+ if (mddev->level == 1)
+ return raid0_takeover_raid1(mddev);
+
+ printk(KERN_ERR "Takeover from raid%i to raid0 not supported\n",
+ mddev->level);
+
return ERR_PTR(-EINVAL);
}
mddev->recovery_cp = MaxSector;
conf = setup_conf(mddev);
- if (!IS_ERR(conf))
+ if (!IS_ERR(conf)) {
list_for_each_entry(rdev, &mddev->disks, same_set)
if (rdev->raid_disk >= 0)
rdev->new_raid_disk = rdev->raid_disk * 2;
-
+ conf->barrier = 1;
+ }
+
return conf;
}
raid5_conf_t *conf = mddev->private;
mdk_rdev_t *rdev;
int spares = 0;
- int added_devices = 0;
unsigned long flags;
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
return -ENOSPC;
list_for_each_entry(rdev, &mddev->disks, same_set)
- if ((rdev->raid_disk < 0 || rdev->raid_disk >= conf->raid_disks)
- && !test_bit(Faulty, &rdev->flags))
+ if (!test_bit(In_sync, &rdev->flags)
+ && !test_bit(Faulty, &rdev->flags))
spares++;
if (spares - mddev->degraded < mddev->delta_disks - conf->max_degraded)
* to correctly record the "partially reconstructed" state of
* such devices during the reshape and confusion could result.
*/
- if (mddev->delta_disks >= 0)
- list_for_each_entry(rdev, &mddev->disks, same_set)
- if (rdev->raid_disk < 0 &&
- !test_bit(Faulty, &rdev->flags)) {
- if (raid5_add_disk(mddev, rdev) == 0) {
- char nm[20];
- if (rdev->raid_disk >= conf->previous_raid_disks) {
- set_bit(In_sync, &rdev->flags);
- added_devices++;
- } else
- rdev->recovery_offset = 0;
- sprintf(nm, "rd%d", rdev->raid_disk);
- if (sysfs_create_link(&mddev->kobj,
- &rdev->kobj, nm))
- /* Failure here is OK */;
- } else
- break;
- } else if (rdev->raid_disk >= conf->previous_raid_disks
- && !test_bit(Faulty, &rdev->flags)) {
- /* This is a spare that was manually added */
- set_bit(In_sync, &rdev->flags);
- added_devices++;
- }
+ if (mddev->delta_disks >= 0) {
+ int added_devices = 0;
+ list_for_each_entry(rdev, &mddev->disks, same_set)
+ if (rdev->raid_disk < 0 &&
+ !test_bit(Faulty, &rdev->flags)) {
+ if (raid5_add_disk(mddev, rdev) == 0) {
+ char nm[20];
+ if (rdev->raid_disk
+ >= conf->previous_raid_disks) {
+ set_bit(In_sync, &rdev->flags);
+ added_devices++;
+ } else
+ rdev->recovery_offset = 0;
+ sprintf(nm, "rd%d", rdev->raid_disk);
+ if (sysfs_create_link(&mddev->kobj,
+ &rdev->kobj, nm))
+ /* Failure here is OK */;
+ }
+ } else if (rdev->raid_disk >= conf->previous_raid_disks
+ && !test_bit(Faulty, &rdev->flags)) {
+ /* This is a spare that was manually added */
+ set_bit(In_sync, &rdev->flags);
+ added_devices++;
+ }
- /* When a reshape changes the number of devices, ->degraded
- * is measured against the larger of the pre and post number of
- * devices.*/
- if (mddev->delta_disks > 0) {
+ /* When a reshape changes the number of devices,
+ * ->degraded is measured against the larger of the
+ * pre and post number of devices.
+ */
spin_lock_irqsave(&conf->device_lock, flags);
mddev->degraded += (conf->raid_disks - conf->previous_raid_disks)
- added_devices;
/*
* Copyright (C) 2006, 2007, 2009 Rusty Russell, IBM Corporation
- * Copyright (C) 2009, 2010 Red Hat, Inc.
+ * Copyright (C) 2009, 2010, 2011 Red Hat, Inc.
+ * Copyright (C) 2009, 2010, 2011 Amit Shah <amit.shah@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
spin_unlock(&portdev->cvq_lock);
}
+static void out_intr(struct virtqueue *vq)
+{
+ struct port *port;
+
+ port = find_port_by_vq(vq->vdev->priv, vq);
+ if (!port)
+ return;
+
+ wake_up_interruptible(&port->waitqueue);
+}
+
static void in_intr(struct virtqueue *vq)
{
struct port *port;
*/
j = 0;
io_callbacks[j] = in_intr;
- io_callbacks[j + 1] = NULL;
+ io_callbacks[j + 1] = out_intr;
io_names[j] = "input";
io_names[j + 1] = "output";
j += 2;
for (i = 1; i < nr_ports; i++) {
j += 2;
io_callbacks[j] = in_intr;
- io_callbacks[j + 1] = NULL;
+ io_callbacks[j + 1] = out_intr;
io_names[j] = "input";
io_names[j + 1] = "output";
}
* This header, excluding the #ifdef __KERNEL__ part, is BSD licensed so
* anyone can use the definitions to implement compatible drivers/servers.
*
- * Copyright (C) Red Hat, Inc., 2009, 2010
+ * Copyright (C) Red Hat, Inc., 2009, 2010, 2011
+ * Copyright (C) Amit Shah <amit.shah@redhat.com>, 2009, 2010, 2011
*/
/* Feature bits */
!blk_tracer_enabled))
return;
+ /*
+ * If the BLK_TC_NOTIFY action mask isn't set, don't send any note
+ * message to the trace.
+ */
+ if (!(bt->act_mask & BLK_TC_NOTIFY))
+ return;
+
local_irq_save(flags);
buf = per_cpu_ptr(bt->msg_data, smp_processor_id());
va_start(args, fmt);
fi
# Build header package
-find . -name Makefile -o -name Kconfig\* -o -name \*.pl > /tmp/files$$
-find arch/x86/include include scripts -type f >> /tmp/files$$
+(cd $srctree; find . -name Makefile -o -name Kconfig\* -o -name \*.pl > /tmp/files$$)
+(cd $srctree; find arch/$SRCARCH/include include scripts -type f >> /tmp/files$$)
(cd $objtree; find .config Module.symvers include scripts -type f >> /tmp/objfiles$$)
destdir=$kernel_headers_dir/usr/src/linux-headers-$version
mkdir -p "$destdir"
-tar -c -f - -T /tmp/files$$ | (cd $destdir; tar -xf -)
+(cd $srctree; tar -c -f - -T /tmp/files$$) | (cd $destdir; tar -xf -)
(cd $objtree; tar -c -f - -T /tmp/objfiles$$) | (cd $destdir; tar -xf -)
rm -f /tmp/files$$ /tmp/objfiles$$
arch=$(dpkg --print-architecture)
projects / cascardo / linux.git / commitdiff