[PATCH] alpha: task_thread_info()

use task_thread_info() for accesses to thread_info of task in arch/alpha
and include/asm-alpha

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

6 files changed, 30 insertions, 30 deletions

diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index abb739b88ed1..7acad7055089 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -493,7 +493,7 @@ unsigned long
 thread_saved_pc(task_t *t)
 {
         unsigned long base = (unsigned long)t->thread_info;
-        unsigned long fp, sp = t->thread_info->pcb.ksp;
+        unsigned long fp, sp = task_thread_info(t)->pcb.ksp;
 
         if (sp > base && sp+6*8 < base + 16*1024) {
                 fp = ((unsigned long*)sp)[6];
@@ -523,7 +523,7 @@ get_wchan(struct task_struct *p)
 
         pc = thread_saved_pc(p);
         if (in_sched_functions(pc)) {
-                schedule_frame = ((unsigned long *)p->thread_info->pcb.ksp)[6];
+                schedule_frame = ((unsigned long *)task_thread_info(p)->pcb.ksp)[6];
                 return ((unsigned long *)schedule_frame)[12];
         }
         return pc;
diff --git a/arch/alpha/kernel/ptrace.c b/arch/alpha/kernel/ptrace.c
index 9969d212e94d..961008c3d422 100644
--- a/arch/alpha/kernel/ptrace.c
+++ b/arch/alpha/kernel/ptrace.c
@@ -103,9 +103,9 @@ get_reg_addr(struct task_struct * task, unsigned long regno)
         unsigned long *addr;
 
         if (regno == 30) {
-                addr = &task->thread_info->pcb.usp;
+                addr = &task_thread_info(task)->pcb.usp;
         } else if (regno == 65) {
-                addr = &task->thread_info->pcb.unique;
+                addr = &task_thread_info(task)->pcb.unique;
         } else if (regno == 31 || regno > 65) {
                 zero = 0;
                 addr = &zero;
@@ -125,7 +125,7 @@ get_reg(struct task_struct * task, unsigned long regno)
         if (regno == 63) {
                 unsigned long fpcr = *get_reg_addr(task, regno);
                 unsigned long swcr
-                  = task->thread_info->ieee_state & IEEE_SW_MASK;
+                  = task_thread_info(task)->ieee_state & IEEE_SW_MASK;
                 swcr = swcr_update_status(swcr, fpcr);
                 return fpcr | swcr;
         }
@@ -139,8 +139,8 @@ static int
 put_reg(struct task_struct *task, unsigned long regno, unsigned long data)
 {
         if (regno == 63) {
-                task->thread_info->ieee_state
-                  = ((task->thread_info->ieee_state & ~IEEE_SW_MASK)
+                task_thread_info(task)->ieee_state
+                  = ((task_thread_info(task)->ieee_state & ~IEEE_SW_MASK)
                      | (data & IEEE_SW_MASK));
                 data = (data & FPCR_DYN_MASK) | ieee_swcr_to_fpcr(data);
         }
@@ -188,35 +188,35 @@ ptrace_set_bpt(struct task_struct * child)
                  * branch (emulation can be tricky for fp branches).
                  */
                 displ = ((s32)(insn << 11)) >> 9;
-                child->thread_info->bpt_addr[nsaved++] = pc + 4;
+                task_thread_info(child)->bpt_addr[nsaved++] = pc + 4;
                 if (displ)              /* guard against unoptimized code */
-                        child->thread_info->bpt_addr[nsaved++]
+                        task_thread_info(child)->bpt_addr[nsaved++]
                           = pc + 4 + displ;
                 DBG(DBG_BPT, ("execing branch\n"));
         } else if (op_code == 0x1a) {
                 reg_b = (insn >> 16) & 0x1f;
-                child->thread_info->bpt_addr[nsaved++] = get_reg(child, reg_b);
+                task_thread_info(child)->bpt_addr[nsaved++] = get_reg(child, reg_b);
                 DBG(DBG_BPT, ("execing jump\n"));
         } else {
-                child->thread_info->bpt_addr[nsaved++] = pc + 4;
+                task_thread_info(child)->bpt_addr[nsaved++] = pc + 4;
                 DBG(DBG_BPT, ("execing normal insn\n"));
         }
 
         /* install breakpoints: */
         for (i = 0; i < nsaved; ++i) {
-                res = read_int(child, child->thread_info->bpt_addr[i],
+                res = read_int(child, task_thread_info(child)->bpt_addr[i],
                                (int *) &insn);
                 if (res < 0)
                         return res;
-                child->thread_info->bpt_insn[i] = insn;
+                task_thread_info(child)->bpt_insn[i] = insn;
                 DBG(DBG_BPT, ("    -> next_pc=%lx\n",
-                              child->thread_info->bpt_addr[i]));
-                res = write_int(child, child->thread_info->bpt_addr[i],
+                              task_thread_info(child)->bpt_addr[i]));
+                res = write_int(child, task_thread_info(child)->bpt_addr[i],
                                 BREAKINST);
                 if (res < 0)
                         return res;
         }
-        child->thread_info->bpt_nsaved = nsaved;
+        task_thread_info(child)->bpt_nsaved = nsaved;
         return 0;
 }
 
@@ -227,9 +227,9 @@ ptrace_set_bpt(struct task_struct * child)
 int
 ptrace_cancel_bpt(struct task_struct * child)
 {
-        int i, nsaved = child->thread_info->bpt_nsaved;
+        int i, nsaved = task_thread_info(child)->bpt_nsaved;
 
-        child->thread_info->bpt_nsaved = 0;
+        task_thread_info(child)->bpt_nsaved = 0;
 
         if (nsaved > 2) {
                 printk("ptrace_cancel_bpt: bogus nsaved: %d!\n", nsaved);
@@ -237,8 +237,8 @@ ptrace_cancel_bpt(struct task_struct * child)
         }
 
         for (i = 0; i < nsaved; ++i) {
-                write_int(child, child->thread_info->bpt_addr[i],
-                          child->thread_info->bpt_insn[i]);
+                write_int(child, task_thread_info(child)->bpt_addr[i],
+                          task_thread_info(child)->bpt_insn[i]);
         }
         return (nsaved != 0);
 }
@@ -355,7 +355,7 @@ do_sys_ptrace(long request, long pid, long addr, long data,
                 if (!valid_signal(data))
                         break;
                 /* Mark single stepping.  */
-                child->thread_info->bpt_nsaved = -1;
+                task_thread_info(child)->bpt_nsaved = -1;
                 clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
                 child->exit_code = data;
                 wake_up_process(child);
diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index da0be3465791..4b873527ce1c 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -302,7 +302,7 @@ secondary_cpu_start(int cpuid, struct task_struct *idle)
                  + hwrpb->processor_offset
                  + cpuid * hwrpb->processor_size);
         hwpcb = (struct pcb_struct *) cpu->hwpcb;
-        ipcb = &idle->thread_info->pcb;
+        ipcb = &task_thread_info(idle)->pcb;
 
         /* Initialize the CPU's HWPCB to something just good enough for
            us to get started.  Immediately after starting, we'll swpctx
diff --git a/include/asm-alpha/mmu_context.h b/include/asm-alpha/mmu_context.h
index a714d0cdc204..6f92482cc96c 100644
--- a/include/asm-alpha/mmu_context.h
+++ b/include/asm-alpha/mmu_context.h
@@ -156,7 +156,7 @@ ev5_switch_mm(struct mm_struct *prev_mm, struct mm_struct *next_mm,
         /* Always update the PCB ASN.  Another thread may have allocated
            a new mm->context (via flush_tlb_mm) without the ASN serial
            number wrapping.  We have no way to detect when this is needed.  */
-        next->thread_info->pcb.asn = mmc & HARDWARE_ASN_MASK;
+        task_thread_info(next)->pcb.asn = mmc & HARDWARE_ASN_MASK;
 }
 
 __EXTERN_INLINE void
@@ -235,7 +235,7 @@ init_new_context(struct task_struct *tsk, struct mm_struct *mm)
                 if (cpu_online(i))
                         mm->context[i] = 0;
         if (tsk != current)
-                tsk->thread_info->pcb.ptbr
+                task_thread_info(tsk)->pcb.ptbr
                   = ((unsigned long)mm->pgd - IDENT_ADDR) >> PAGE_SHIFT;
         return 0;
 }
@@ -249,7 +249,7 @@ destroy_context(struct mm_struct *mm)
 static inline void
 enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
 {
-        tsk->thread_info->pcb.ptbr
+        task_thread_info(tsk)->pcb.ptbr
           = ((unsigned long)mm->pgd - IDENT_ADDR) >> PAGE_SHIFT;
 }
 
diff --git a/include/asm-alpha/processor.h b/include/asm-alpha/processor.h
index bb1a7a3abb8b..12a14a5bbe12 100644
--- a/include/asm-alpha/processor.h
+++ b/include/asm-alpha/processor.h
@@ -64,7 +64,7 @@ unsigned long get_wchan(struct task_struct *p);
   (*(unsigned long *)(PT_REG(pc) + (unsigned long) ((tsk)->thread_info)))
 
 #define KSTK_ESP(tsk) \
-  ((tsk) == current ? rdusp() : (tsk)->thread_info->pcb.usp)
+  ((tsk) == current ? rdusp() : task_thread_info(tsk)->pcb.usp)
 
 #define cpu_relax()     barrier()
 
diff --git a/include/asm-alpha/system.h b/include/asm-alpha/system.h
index 766ab868e8ab..cc9c7e8cced5 100644
--- a/include/asm-alpha/system.h
+++ b/include/asm-alpha/system.h
@@ -131,10 +131,10 @@ struct el_common_EV6_mcheck {
 extern void halt(void) __attribute__((noreturn));
 #define __halt() __asm__ __volatile__ ("call_pal %0 #halt" : : "i" (PAL_halt))
 
-#define switch_to(P,N,L)                                                \
-  do {                                                                  \
-    (L) = alpha_switch_to(virt_to_phys(&(N)->thread_info->pcb), (P));   \
-    check_mmu_context();                                                \
+#define switch_to(P,N,L)                                                 \
+  do {                                                                   \
+    (L) = alpha_switch_to(virt_to_phys(&task_thread_info(N)->pcb), (P)); \
+    check_mmu_context();                                                 \
   } while (0)
 
 struct task_struct;