[PATCH] CRIS update: updates for 2.6.12

Patches to make CRIS work with 2.6.12.
Signed-off-by: Mikael Starvik <starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/cris/arch-v10/kernel/ptrace.c

@@ -11,6 +11,7 @@
 #include <linux/ptrace.h>
 #include <linux/user.h>
 #include <linux/signal.h>
+#include <linux/security.h>
 
 #include <asm/uaccess.h>
 #include <asm/page.h>
@@ -86,9 +87,13 @@ sys_ptrace(long request, long pid, long addr, long data)
 	ret = -EPERM;
 	
 	if (request == PTRACE_TRACEME) {
+		/* are we already being traced? */
 		if (current->ptrace & PT_PTRACED)
 			goto out;
-
+		ret = security_ptrace(current->parent, current);
+		if (ret)
+			goto out;
+		/* set the ptrace bit in the process flags. */
 		current->ptrace |= PT_PTRACED;
 		ret = 0;
 		goto out;
@@ -207,7 +212,7 @@ sys_ptrace(long request, long pid, long addr, long data)
 		case PTRACE_KILL:
 			ret = 0;
 			
-			if (child->state == TASK_ZOMBIE)
+			if (child->exit_state == EXIT_ZOMBIE)
 				break;
 			
 			child->exit_code = SIGKILL;

arch/cris/kernel/module.c

@@ -32,7 +32,7 @@ void *module_alloc(unsigned long size)
 {
 	if (size == 0)
 		return NULL;
-	return vmalloc(size);
+	return vmalloc_exec(size);
 }
 
 
@@ -59,26 +59,8 @@ int apply_relocate(Elf32_Shdr *sechdrs,
 		   unsigned int relsec,
 		   struct module *me)
 {
-	unsigned int i;
-	Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
-	Elf32_Sym *sym;
-	uint32_t *location;
-
-	DEBUGP("Applying relocate section %u to %u\n", relsec,
-	       sechdrs[relsec].sh_info);
-	for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
-		/* This is where to make the change */
-		location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_offset
-			+ rel[i].r_offset;
-		/* This is the symbol it is referring to.  Note that all
-		   undefined symbols have been resolved.  */
-		sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
-			+ ELF32_R_SYM(rel[i].r_info);
-
-                /* We add the value into the location given */
-                *location += sym->st_value;
-	}
-	return 0;
+	printk(KERN_ERR "module %s: REL relocation unsupported\n", me->name);
+	return -ENOEXEC;
 }
 
 int apply_relocate_add(Elf32_Shdr *sechdrs,
@@ -90,7 +72,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
   	unsigned int i;
 	Elf32_Rela *rela = (void *)sechdrs[relsec].sh_addr;
 
-	DEBUGP ("Applying relocate section %u to %u\n", relsec,
+	DEBUGP ("Applying add relocate section %u to %u\n", relsec,
 		sechdrs[relsec].sh_info);
 
 	for (i = 0; i < sechdrs[relsec].sh_size / sizeof (*rela); i++) {
@@ -103,7 +85,18 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
 		Elf32_Sym *sym
 			= ((Elf32_Sym *)sechdrs[symindex].sh_addr
 			   + ELF32_R_SYM (rela[i].r_info));
-		*loc = sym->st_value + rela[i].r_addend;
+		switch (ELF32_R_TYPE(rela[i].r_info)) {
+		case R_CRIS_32:
+			*loc = sym->st_value + rela[i].r_addend;
+			break;
+		case R_CRIS_32_PCREL:
+			*loc = sym->st_value - (unsigned)loc + rela[i].r_addend - 4;
+			 break;
+		default:
+			printk(KERN_ERR "module %s: Unknown relocation: %u\n",
+			       me->name, ELF32_R_TYPE(rela[i].r_info));
+			return -ENOEXEC;
+		}
 	}
 
 	return 0;

arch/cris/kernel/process.c

-/* $Id: process.c,v 1.17 2004/04/05 13:53:48 starvik Exp $
+/* $Id: process.c,v 1.21 2005/03/04 08:16:17 starvik Exp $
  * 
  *  linux/arch/cris/kernel/process.c
  *
@@ -8,6 +8,18 @@
  *  Authors:   Bjorn Wesen (bjornw@axis.com)
  *
  *  $Log: process.c,v $
+ *  Revision 1.21  2005/03/04 08:16:17  starvik
+ *  Merge of Linux 2.6.11.
+ *
+ *  Revision 1.20  2005/01/18 05:57:22  starvik
+ *  Renamed hlt_counter to cris_hlt_counter and made it global.
+ *
+ *  Revision 1.19  2004/10/19 13:07:43  starvik
+ *  Merge of Linux 2.6.9
+ *
+ *  Revision 1.18  2004/08/16 12:37:23  starvik
+ *  Merge of Linux 2.6.8
+ *
  *  Revision 1.17  2004/04/05 13:53:48  starvik
  *  Merge of Linux 2.6.5
  *
@@ -161,18 +173,18 @@ EXPORT_SYMBOL(init_task);
  * region by enable_hlt/disable_hlt.
  */
 
-static int hlt_counter=0;
+int cris_hlt_counter=0;
 
 void disable_hlt(void)
 {
-	hlt_counter++;
+	cris_hlt_counter++;
 }
 
 EXPORT_SYMBOL(disable_hlt);
 
 void enable_hlt(void)
 {
-	hlt_counter--;
+	cris_hlt_counter--;
 }
 
 EXPORT_SYMBOL(enable_hlt);
@@ -195,16 +207,19 @@ void cpu_idle (void)
 	/* endless idle loop with no priority at all */
 	while (1) {
 		while (!need_resched()) {
-			void (*idle)(void) = pm_idle;
-
+			void (*idle)(void);
+			/*
+			 * Mark this as an RCU critical section so that
+			 * synchronize_kernel() in the unload path waits
+			 * for our completion.
+			 */
+			idle = pm_idle;
 			if (!idle)
 				idle = default_idle;
-
 			idle();
 		}
 		schedule();
 	}
-
 }
 
 void hard_reset_now (void);

include/asm-cris/arch-v10/bitops.h

@@ -51,7 +51,7 @@ extern inline unsigned long ffz(unsigned long w)
  *
  * Undefined if no bit exists, so code should check against 0 first.
  */
-extern __inline__ unsigned long __ffs(unsigned long word)
+extern inline unsigned long __ffs(unsigned long word)
 {
 	return cris_swapnwbrlz(~word);
 }

include/asm-cris/arch-v10/offset.h

@@ -25,7 +25,7 @@
 #define THREAD_usp 4 /* offsetof(struct thread_struct, usp) */
 #define THREAD_dccr 8 /* offsetof(struct thread_struct, dccr) */
 
-#define TASK_pid 133 /* offsetof(struct task_struct, pid) */
+#define TASK_pid 141 /* offsetof(struct task_struct, pid) */
 
 #define LCLONE_VM 256 /* CLONE_VM */
 #define LCLONE_UNTRACED 8388608 /* CLONE_UNTRACED */

include/asm-cris/bitops.h

@@ -16,6 +16,7 @@
 
 #include <asm/arch/bitops.h>
 #include <asm/system.h>
+#include <asm/atomic.h>
 #include <linux/compiler.h>
 
 /*
@@ -88,7 +89,7 @@ struct __dummy { unsigned long a[100]; };
  * It also implies a memory barrier.
  */
 
-extern inline int test_and_set_bit(int nr, void *addr)
+extern inline int test_and_set_bit(int nr, volatile unsigned long *addr)
 {
 	unsigned int mask, retval;
 	unsigned long flags;
@@ -96,15 +97,15 @@ extern inline int test_and_set_bit(int nr, void *addr)
 	
 	adr += nr >> 5;
 	mask = 1 << (nr & 0x1f);
-	local_save_flags(flags);
-	local_irq_disable();
+	cris_atomic_save(addr, flags);
 	retval = (mask & *adr) != 0;
 	*adr |= mask;
+	cris_atomic_restore(addr, flags);
 	local_irq_restore(flags);
 	return retval;
 }
 
-extern inline int __test_and_set_bit(int nr, void *addr)
+extern inline int __test_and_set_bit(int nr, volatile unsigned long *addr)
 {
 	unsigned int mask, retval;
 	unsigned int *adr = (unsigned int *)addr;
@@ -131,7 +132,7 @@ extern inline int __test_and_set_bit(int nr, void *addr)
  * It also implies a memory barrier.
  */
 
-extern inline int test_and_clear_bit(int nr, void *addr)
+extern inline int test_and_clear_bit(int nr, volatile unsigned long *addr)
 {
 	unsigned int mask, retval;
 	unsigned long flags;
@@ -139,11 +140,10 @@ extern inline int test_and_clear_bit(int nr, void *addr)
 	
 	adr += nr >> 5;
 	mask = 1 << (nr & 0x1f);
-	local_save_flags(flags);
-	local_irq_disable();
+	cris_atomic_save(addr, flags);
 	retval = (mask & *adr) != 0;
 	*adr &= ~mask;
-	local_irq_restore(flags);
+	cris_atomic_restore(addr, flags);
 	return retval;
 }
 
@@ -157,7 +157,7 @@ extern inline int test_and_clear_bit(int nr, void *addr)
  * but actually fail.  You must protect multiple accesses with a lock.
  */
 
-extern inline int __test_and_clear_bit(int nr, void *addr)
+extern inline int __test_and_clear_bit(int nr, volatile unsigned long *addr)
 {
 	unsigned int mask, retval;
 	unsigned int *adr = (unsigned int *)addr;
@@ -177,24 +177,23 @@ extern inline int __test_and_clear_bit(int nr, void *addr)
  * It also implies a memory barrier.
  */
 
-extern inline int test_and_change_bit(int nr, void *addr)
+extern inline int test_and_change_bit(int nr, volatile unsigned long *addr)
 {
 	unsigned int mask, retval;
 	unsigned long flags;
 	unsigned int *adr = (unsigned int *)addr;
 	adr += nr >> 5;
 	mask = 1 << (nr & 0x1f);
-	local_save_flags(flags);
-	local_irq_disable();
+	cris_atomic_save(addr, flags);
 	retval = (mask & *adr) != 0;
 	*adr ^= mask;
-	local_irq_restore(flags);
+	cris_atomic_restore(addr, flags);
 	return retval;
 }
 
 /* WARNING: non atomic and it can be reordered! */
 
-extern inline int __test_and_change_bit(int nr, void *addr)
+extern inline int __test_and_change_bit(int nr, volatile unsigned long *addr)
 {
 	unsigned int mask, retval;
 	unsigned int *adr = (unsigned int *)addr;
@@ -215,7 +214,7 @@ extern inline int __test_and_change_bit(int nr, void *addr)
  * This routine doesn't need to be atomic.
  */
 
-extern inline int test_bit(int nr, const void *addr)
+extern inline int test_bit(int nr, const volatile unsigned long *addr)
 {
 	unsigned int mask;
 	unsigned int *adr = (unsigned int *)addr;
@@ -259,7 +258,7 @@ extern inline int test_bit(int nr, const void *addr)
  * @offset: The bitnumber to start searching at
  * @size: The maximum size to search
  */
-extern inline int find_next_zero_bit (void * addr, int size, int offset)
+extern inline int find_next_zero_bit (const unsigned long * addr, int size, int offset)
 {
 	unsigned long *p = ((unsigned long *) addr) + (offset >> 5);
 	unsigned long result = offset & ~31UL;
@@ -301,7 +300,7 @@ extern inline int find_next_zero_bit (void * addr, int size, int offset)
  * @offset: The bitnumber to start searching at
  * @size: The maximum size to search
  */
-static __inline__ int find_next_bit(void *addr, int size, int offset)
+static __inline__ int find_next_bit(const unsigned long *addr, int size, int offset)
 {
 	unsigned long *p = ((unsigned long *) addr) + (offset >> 5);
         unsigned long result = offset & ~31UL;
@@ -367,7 +366,7 @@ static __inline__ int find_next_bit(void *addr, int size, int offset)
 #define minix_test_bit(nr,addr) test_bit(nr,addr)
 #define minix_find_first_zero_bit(addr,size) find_first_zero_bit(addr,size)
 
-extern inline int sched_find_first_bit(unsigned long *b)
+extern inline int sched_find_first_bit(const unsigned long *b)
 {
 	if (unlikely(b[0]))
 		return __ffs(b[0]);

include/asm-cris/kmap_types.h

@@ -17,8 +17,8 @@ enum km_type {
 	KM_PTE1,
 	KM_IRQ0,
 	KM_IRQ1,
-	KM_CRYPTO_USER,
-	KM_CRYPTO_SOFTIRQ,
+	KM_SOFTIRQ0,
+	KM_SOFTIRQ1,
 	KM_TYPE_NR
 };
 

include/asm-cris/page.h

@@ -29,18 +29,15 @@
  */
 #ifndef __ASSEMBLY__
 typedef struct { unsigned long pte; } pte_t;
-typedef struct { unsigned long pmd; } pmd_t;
 typedef struct { unsigned long pgd; } pgd_t;
 typedef struct { unsigned long pgprot; } pgprot_t;
 #endif
 
 #define pte_val(x)	((x).pte)
-#define pmd_val(x)	((x).pmd)
 #define pgd_val(x)	((x).pgd)
 #define pgprot_val(x)	((x).pgprot)
 
 #define __pte(x)	((pte_t) { (x) } )
-#define __pmd(x)	((pmd_t) { (x) } )
 #define __pgd(x)	((pgd_t) { (x) } )
 #define __pgprot(x)	((pgprot_t) { (x) } )
 
@@ -73,10 +70,6 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 
 #ifndef __ASSEMBLY__
 
-#define BUG() do { \
-  printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
-} while (0)
-
 /* Pure 2^n version of get_order */
 static inline int get_order(unsigned long size)
 {

include/asm-cris/pgalloc.h

@@ -47,16 +47,6 @@ extern inline void pte_free(struct page *pte)
 
 #define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))
 
-/*
- * We don't have any real pmd's, and this code never triggers because
- * the pgd will always be present..
- */
-
-#define pmd_alloc_one(mm, addr)    ({ BUG(); ((pmd_t *)2); })
-#define pmd_free(x)                do { } while (0)
-#define __pmd_free_tlb(tlb,x)      do { } while (0)
-#define pgd_populate(mm, pmd, pte) BUG()
-
 #define check_pgt_cache()          do { } while (0)
 
 #endif

include/asm-cris/pgtable.h

@@ -5,7 +5,8 @@
 #ifndef _CRIS_PGTABLE_H
 #define _CRIS_PGTABLE_H
 
-#include <asm-generic/4level-fixup.h>
+#include <asm/page.h>
+#include <asm-generic/pgtable-nopmd.h>
 
 #ifndef __ASSEMBLY__
 #include <linux/config.h>
@@ -41,22 +42,14 @@ extern void paging_init(void);
  * but the define is needed for a generic inline function.)
  */
 #define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
-#define set_pgd(pgdptr, pgdval) (*(pgdptr) = pgdval)
+#define set_pgu(pudptr, pudval) (*(pudptr) = pudval)
 
-/* PMD_SHIFT determines the size of the area a second-level page table can
+/* PGDIR_SHIFT determines the size of the area a second-level page table can
  * map. It is equal to the page size times the number of PTE's that fit in
  * a PMD page. A PTE is 4-bytes in CRIS. Hence the following number.
  */
 
-#define PMD_SHIFT	(PAGE_SHIFT + (PAGE_SHIFT-2))
-#define PMD_SIZE	(1UL << PMD_SHIFT)
-#define PMD_MASK	(~(PMD_SIZE-1))
-
-/* PGDIR_SHIFT determines what a third-level page table entry can map.
- * Since we fold into a two-level structure, this is the same as PMD_SHIFT.
- */
-
-#define PGDIR_SHIFT	PMD_SHIFT
+#define PGDIR_SHIFT	(PAGE_SHIFT + (PAGE_SHIFT-2))
 #define PGDIR_SIZE	(1UL << PGDIR_SHIFT)
 #define PGDIR_MASK	(~(PGDIR_SIZE-1))
 
@@ -67,7 +60,6 @@ extern void paging_init(void);
  * divide it by 4 (shift by 2).
  */
 #define PTRS_PER_PTE	(1UL << (PAGE_SHIFT-2))
-#define PTRS_PER_PMD	1
 #define PTRS_PER_PGD	(1UL << (PAGE_SHIFT-2))
 
 /* calculate how many PGD entries a user-level program can use
@@ -105,7 +97,7 @@ extern unsigned long empty_zero_page;
 #define pte_present(x)	(pte_val(x) & _PAGE_PRESENT)
 #define pte_clear(mm,addr,xp)	do { pte_val(*(xp)) = 0; } while (0)
 
-#define pmd_none(x)	(!pmd_val(x))
+#define pmd_none(x)     (!pmd_val(x))
 /* by removing the _PAGE_KERNEL bit from the comparision, the same pmd_bad
  * works for both _PAGE_TABLE and _KERNPG_TABLE pmd entries.
  */
@@ -115,16 +107,6 @@ extern unsigned long empty_zero_page;
 
 #ifndef __ASSEMBLY__
 
-/*
- * The "pgd_xxx()" functions here are trivial for a folded two-level
- * setup: the pgd is never bad, and a pmd always exists (as it's folded
- * into the pgd entry)
- */
-extern inline int pgd_none(pgd_t pgd)		{ return 0; }
-extern inline int pgd_bad(pgd_t pgd)		{ return 0; }
-extern inline int pgd_present(pgd_t pgd)	{ return 1; }
-extern inline void pgd_clear(pgd_t * pgdp)	{ }
-
 /*
  * The following only work if pte_present() is true.
  * Undefined behaviour if not..
@@ -275,7 +257,7 @@ extern inline void pmd_set(pmd_t * pmdp, pte_t * ptep)
 #define pmd_page_kernel(pmd)	((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
 
 /* to find an entry in a page-table-directory. */
-#define pgd_index(address) ((address >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
+#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
 
 /* to find an entry in a page-table-directory */
 extern inline pgd_t * pgd_offset(struct mm_struct * mm, unsigned long address)
@@ -286,12 +268,6 @@ extern inline pgd_t * pgd_offset(struct mm_struct * mm, unsigned long address)
 /* to find an entry in a kernel page-table-directory */
 #define pgd_offset_k(address) pgd_offset(&init_mm, address)
 
-/* Find an entry in the second-level page table.. */
-extern inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
-{
-	return (pmd_t *) dir;
-}
-
 /* Find an entry in the third-level page table.. */
 #define __pte_offset(address) \
 	(((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
@@ -308,8 +284,6 @@ extern inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
 
 #define pte_ERROR(e) \
         printk("%s:%d: bad pte %p(%08lx).\n", __FILE__, __LINE__, &(e), pte_val(e))
-#define pmd_ERROR(e) \
-        printk("%s:%d: bad pmd %p(%08lx).\n", __FILE__, __LINE__, &(e), pmd_val(e))
 #define pgd_ERROR(e) \
         printk("%s:%d: bad pgd %p(%08lx).\n", __FILE__, __LINE__, &(e), pgd_val(e))
 
@@ -348,5 +322,7 @@ extern inline void update_mmu_cache(struct vm_area_struct * vma,
 #define pte_to_pgoff(x)	(pte_val(x) >> 6)
 #define pgoff_to_pte(x)	__pte(((x) << 6) | _PAGE_FILE)
 
+typedef pte_t *pte_addr_t;
+
 #endif /* __ASSEMBLY__ */
 #endif /* _CRIS_PGTABLE_H */

include/asm-cris/processor.h

@@ -55,15 +55,6 @@ unsigned long get_wchan(struct task_struct *p);
 
 #define KSTK_ESP(tsk)   ((tsk) == current ? rdusp() : (tsk)->thread.usp)
 
-/*
- * Free current thread data structures etc..
- */
-
-extern inline void exit_thread(void)
-{
-        /* Nothing needs to be done.  */
-}
-
 extern unsigned long thread_saved_pc(struct task_struct *tsk);
 
 /* Free all resources held by a thread. */

include/asm-cris/thread_info.h

@@ -43,7 +43,7 @@ struct thread_info {
 
 #endif
 
-#define PREEMPT_ACTIVE		0x4000000
+#define PREEMPT_ACTIVE		0x10000000
 
 /*
  * macros/functions for gaining access to the thread information structure

include/asm-cris/timex.h

@@ -14,7 +14,7 @@
  * used so it does not matter.
  */
 
-typedef unsigned int cycles_t;
+typedef unsigned long long cycles_t;
 
 extern inline cycles_t get_cycles(void)
 {

include/asm-cris/types.h

@@ -52,7 +52,7 @@ typedef unsigned long long u64;
 typedef u32 dma_addr_t;
 typedef u32 dma64_addr_t;
 
-typedef unsigned int kmem_bufctl_t;
+typedef unsigned short kmem_bufctl_t;
 
 #endif /* __ASSEMBLY__ */
 

include/asm-cris/unistd.h

@@ -288,8 +288,15 @@
 #define __NR_mq_timedreceive	(__NR_mq_open+3)
 #define __NR_mq_notify		(__NR_mq_open+4)
 #define __NR_mq_getsetattr	(__NR_mq_open+5)
- 
-#define NR_syscalls 283
+#define __NR_sys_kexec_load	283
+#define __NR_waitid		284
+/* #define __NR_sys_setaltroot	285 */
+#define __NR_add_key		286
+#define __NR_request_key	287
+#define __NR_keyctl		288
+
+#define NR_syscalls 289
+
 
 
 #ifdef __KERNEL__