[PATCH] alpha: task_thread_info()
Al Viro [Thu, 12 Jan 2006 09:05:36 +0000 (01:05 -0800)]
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>

arch/alpha/kernel/process.c
arch/alpha/kernel/ptrace.c
arch/alpha/kernel/smp.c
include/asm-alpha/mmu_context.h
include/asm-alpha/processor.h
include/asm-alpha/system.h

index abb739b..7acad70 100644 (file)
@@ -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;
index 9969d21..961008c 100644 (file)
@@ -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);
index da0be34..4b87352 100644 (file)
@@ -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
index a714d0c..6f92482 100644 (file)
@@ -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;
 }
 
index bb1a7a3..12a14a5 100644 (file)
@@ -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()
 
index 766ab86..cc9c7e8 100644 (file)
@@ -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;