[PATCH 02/50] alpha: task_thread_info()

From: Al Viro
Date: Tue Jan 03 2006 - 16:11:07 EST

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References: <20060103210515.5135@xxxxxxxxxxxxxxxx>
In-Reply-To: <20060103210515.5135@xxxxxxxxxxxxxxxx>

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

Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>

---

arch/alpha/kernel/process.c | 4 ++--
arch/alpha/kernel/ptrace.c | 38 +++++++++++++++++++-------------------
arch/alpha/kernel/smp.c | 2 +-
include/asm-alpha/mmu_context.h | 6 +++---
include/asm-alpha/processor.h | 2 +-
include/asm-alpha/system.h | 8 ++++----
6 files changed, 30 insertions(+), 30 deletions(-)

15a26083e587b713a99f9e0a8ebd36edd7319acf
diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index a868261..f15a456 100644
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -488,7 +488,7 @@ 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];
@@ -518,7 +518,7 @@ 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 bbd3753..c83ce5d 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 *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, unsig
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 * chil
* 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 * chil
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 * c
}

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);
}
@@ -369,7 +369,7 @@ do_sys_ptrace(long request, long pid, lo
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 da0be34..4b87352 100644
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -302,7 +302,7 @@ secondary_cpu_start(int cpuid, struct ta
+ 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 a714d0c..6f92482 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,
/* 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
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 059780a..e59a6ec 100644
--- a/include/asm-alpha/processor.h
+++ b/include/asm-alpha/processor.h
@@ -64,7 +64,7 @@ unsigned long get_wchan(struct task_stru
(*(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 050e86d..ba19cf3 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;
--
0.99.9.GIT

-
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Next message: Al Viro: "[PATCH 14/50] sh: task_pt_regs()"
Previous message: Al Viro: "[PATCH 40/50] powerpc: task_stack_page()"
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