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authorDavid S. Miller <davem@davemloft.net>2008-09-12 03:10:32 -0400
committerDavid S. Miller <davem@davemloft.net>2008-09-12 03:10:32 -0400
commitb539c4676600dc25c2cd9322ff6bff2c2d455161 (patch)
tree8241a9cae96a40bcced945821f9e31dc25176878 /arch/sparc64
parenta9e7bb041084055b70971e3cde3bb21aea593a74 (diff)
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.c37
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)
51} 51}
52#endif 52#endif
53 53
54/*
55 * To debug kernel to catch accesses to certain virtual/physical addresses.
56 * Mode = 0 selects physical watchpoints, mode = 1 selects virtual watchpoints.
57 * flags = VM_READ watches memread accesses, flags = VM_WRITE watches memwrite accesses.
58 * Caller passes in a 64bit aligned addr, with mask set to the bytes that need to be
59 * watched. This is only useful on a single cpu machine for now. After the watchpoint
60 * is detected, the process causing it will be killed, thus preventing an infinite loop.
61 */
62void set_brkpt(unsigned long addr, unsigned char mask, int flags, int mode)
63{
64 unsigned long lsubits;
65
66 __asm__ __volatile__("ldxa [%%g0] %1, %0"
67 : "=r" (lsubits)
68 : "i" (ASI_LSU_CONTROL));
69 lsubits &= ~(LSU_CONTROL_PM | LSU_CONTROL_VM |
70 LSU_CONTROL_PR | LSU_CONTROL_VR |
71 LSU_CONTROL_PW | LSU_CONTROL_VW);
72
73 __asm__ __volatile__("stxa %0, [%1] %2\n\t"
74 "membar #Sync"
75 : /* no outputs */
76 : "r" (addr), "r" (mode ? VIRT_WATCHPOINT : PHYS_WATCHPOINT),
77 "i" (ASI_DMMU));
78
79 lsubits |= ((unsigned long)mask << (mode ? 25 : 33));
80 if (flags & VM_READ)
81 lsubits |= (mode ? LSU_CONTROL_VR : LSU_CONTROL_PR);
82 if (flags & VM_WRITE)
83 lsubits |= (mode ? LSU_CONTROL_VW : LSU_CONTROL_PW);
84 __asm__ __volatile__("stxa %0, [%%g0] %1\n\t"
85 "membar #Sync"
86 : /* no outputs */
87 : "r" (lsubits), "i" (ASI_LSU_CONTROL)
88 : "memory");
89}
90
91static void __kprobes unhandled_fault(unsigned long address, 54static void __kprobes unhandled_fault(unsigned long address,
92 struct task_struct *tsk, 55 struct task_struct *tsk,
93 struct pt_regs *regs) 56 struct pt_regs *regs)