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| author | David S. Miller <davem@davemloft.net> | 2008-09-12 11:10:32 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-09-12 11:10:32 +0400 |
| commit | b539c4676600dc25c2cd9322ff6bff2c2d455161 (patch) | |
| tree | 8241a9cae96a40bcced945821f9e31dc25176878 /arch/sparc64 | |
| parent | a9e7bb041084055b70971e3cde3bb21aea593a74 (diff) | |
| download | linux-b539c4676600dc25c2cd9322ff6bff2c2d455161.tar.xz | |
sparc64: Fix sparse warnings in fault.c
1) set_brkpt() is referenced by nothing and hasn't been used by anyone
to my knowledge for many many years. So just delete it.
2) add extern decl for do_sparc64_fault() in asm/pgtable_64.h
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64')
| -rw-r--r-- | arch/sparc64/mm/fault.c | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/arch/sparc64/mm/fault.c b/arch/sparc64/mm/fault.c index ea7d7ae76bc2..a9e474bf6385 100644 --- a/arch/sparc64/mm/fault.c +++ b/arch/sparc64/mm/fault.c @@ -51,43 +51,6 @@ static inline int notify_page_fault(struct pt_regs *regs) } #endif -/* - * To debug kernel to catch accesses to certain virtual/physical addresses. - * Mode = 0 selects physical watchpoints, mode = 1 selects virtual watchpoints. - * flags = VM_READ watches memread accesses, flags = VM_WRITE watches memwrite accesses. - * Caller passes in a 64bit aligned addr, with mask set to the bytes that need to be - * watched. This is only useful on a single cpu machine for now. After the watchpoint - * is detected, the process causing it will be killed, thus preventing an infinite loop. - */ -void set_brkpt(unsigned long addr, unsigned char mask, int flags, int mode) -{ - unsigned long lsubits; - - __asm__ __volatile__("ldxa [%%g0] %1, %0" - : "=r" (lsubits) - : "i" (ASI_LSU_CONTROL)); - lsubits &= ~(LSU_CONTROL_PM | LSU_CONTROL_VM | - LSU_CONTROL_PR | LSU_CONTROL_VR | - LSU_CONTROL_PW | LSU_CONTROL_VW); - - __asm__ __volatile__("stxa %0, [%1] %2\n\t" - "membar #Sync" - : /* no outputs */ - : "r" (addr), "r" (mode ? VIRT_WATCHPOINT : PHYS_WATCHPOINT), - "i" (ASI_DMMU)); - - lsubits |= ((unsigned long)mask << (mode ? 25 : 33)); - if (flags & VM_READ) - lsubits |= (mode ? LSU_CONTROL_VR : LSU_CONTROL_PR); - if (flags & VM_WRITE) - lsubits |= (mode ? LSU_CONTROL_VW : LSU_CONTROL_PW); - __asm__ __volatile__("stxa %0, [%%g0] %1\n\t" - "membar #Sync" - : /* no outputs */ - : "r" (lsubits), "i" (ASI_LSU_CONTROL) - : "memory"); -} - static void __kprobes unhandled_fault(unsigned long address, struct task_struct *tsk, struct pt_regs *regs) |