From: Al Viro <viro@ftp.linux.org.uk>
Date: Thu, 12 Jan 2006 09:06:07 +0000 (-0800)
Subject: [PATCH] mips: task_thread_info()
X-Git-Tag: v2.6.16-rc1~227
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=dc8f6029cd51af1b148846a32e68d69013a5cc0f;p=linux-2.6-omap-h63xx.git

[PATCH] mips: task_thread_info()

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>
---

diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 6c358b33316..f838b36cc76 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -438,7 +438,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		break;
 
 	case PTRACE_GET_THREAD_AREA:
-		ret = put_user(child->thread_info->tp_value,
+		ret = put_user(task_thread_info(child)->tp_value,
 				(unsigned long __user *) data);
 		break;
 
diff --git a/arch/mips/kernel/ptrace32.c b/arch/mips/kernel/ptrace32.c
index 456ec438728..0c82b25d8c6 100644
--- a/arch/mips/kernel/ptrace32.c
+++ b/arch/mips/kernel/ptrace32.c
@@ -375,7 +375,7 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data)
 		break;
 
 	case PTRACE_GET_THREAD_AREA:
-		ret = put_user(child->thread_info->tp_value,
+		ret = put_user(task_thread_info(child)->tp_value,
 				(unsigned int __user *) (unsigned long) data);
 		break;
 
@@ -389,7 +389,7 @@ asmlinkage int sys32_ptrace(int request, int pid, int addr, int data)
 		break;
 
 	case PTRACE_GET_THREAD_AREA_3264:
-		ret = put_user(child->thread_info->tp_value,
+		ret = put_user(task_thread_info(child)->tp_value,
 				(unsigned long __user *) (unsigned long) data);
 		break;
 
diff --git a/arch/mips/kernel/smp_mt.c b/arch/mips/kernel/smp_mt.c
index d429544ba4b..794a1c3de2a 100644
--- a/arch/mips/kernel/smp_mt.c
+++ b/arch/mips/kernel/smp_mt.c
@@ -287,6 +287,7 @@ void prom_prepare_cpus(unsigned int max_cpus)
  */
 void prom_boot_secondary(int cpu, struct task_struct *idle)
 {
+	struct thread_info *gp = task_thread_info(idle);
 	dvpe();
 	set_c0_mvpcontrol(MVPCONTROL_VPC);
 
@@ -307,11 +308,9 @@ void prom_boot_secondary(int cpu, struct task_struct *idle)
 	write_tc_gpr_sp( __KSTK_TOS(idle));
 
 	/* global pointer */
-	write_tc_gpr_gp((unsigned long)idle->thread_info);
+	write_tc_gpr_gp((unsigned long)gp);
 
-	flush_icache_range((unsigned long)idle->thread_info,
-					   (unsigned long)idle->thread_info +
-					   sizeof(struct thread_info));
+	flush_icache_range((unsigned long)gp, (unsigned long)(gp + 1));
 
 	/* finally out of configuration and into chaos */
 	clear_c0_mvpcontrol(MVPCONTROL_VPC);
diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c
index 006881942aa..332358430ff 100644
--- a/arch/mips/kernel/syscall.c
+++ b/arch/mips/kernel/syscall.c
@@ -263,7 +263,7 @@ asmlinkage int sys_olduname(struct oldold_utsname * name)
 
 void sys_set_thread_area(unsigned long addr)
 {
-	struct thread_info *ti = current->thread_info;
+	struct thread_info *ti = task_thread_info(current);
 
 	ti->tp_value = addr;
 
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 7058893d5ad..59a187956de 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -519,7 +519,7 @@ static inline int simulate_llsc(struct pt_regs *regs)
  */
 static inline int simulate_rdhwr(struct pt_regs *regs)
 {
-	struct thread_info *ti = current->thread_info;
+	struct thread_info *ti = task_thread_info(current);
 	unsigned int opcode;
 
 	if (unlikely(get_insn_opcode(regs, &opcode)))
diff --git a/arch/mips/pmc-sierra/yosemite/smp.c b/arch/mips/pmc-sierra/yosemite/smp.c
index 0527170d6ad..f17f575f58f 100644
--- a/arch/mips/pmc-sierra/yosemite/smp.c
+++ b/arch/mips/pmc-sierra/yosemite/smp.c
@@ -93,8 +93,8 @@ void __init prom_prepare_cpus(unsigned int max_cpus)
  */
 void prom_boot_secondary(int cpu, struct task_struct *idle)
 {
-	unsigned long gp = (unsigned long) idle->thread_info;
-	unsigned long sp = gp + THREAD_SIZE - 32;
+	unsigned long gp = (unsigned long) task_thread_info(idle);
+	unsigned long sp = __KSTK_TOP(idle);
 
 	secondary_sp = sp;
 	secondary_gp = gp;
diff --git a/arch/mips/sgi-ip27/ip27-smp.c b/arch/mips/sgi-ip27/ip27-smp.c
index 3a8291b7d26..dbef3f6b565 100644
--- a/arch/mips/sgi-ip27/ip27-smp.c
+++ b/arch/mips/sgi-ip27/ip27-smp.c
@@ -168,8 +168,8 @@ void __init prom_prepare_cpus(unsigned int max_cpus)
  */
 void __init prom_boot_secondary(int cpu, struct task_struct *idle)
 {
-	unsigned long gp = (unsigned long) idle->thread_info;
-	unsigned long sp = gp + THREAD_SIZE - 32;
+	unsigned long gp = (unsigned long)task_thread_info(idle);
+	unsigned long sp = __KSTK_TOS(idle);
 
 	LAUNCH_SLAVE(cputonasid(cpu),cputoslice(cpu),
 		(launch_proc_t)MAPPED_KERN_RW_TO_K0(smp_bootstrap),
diff --git a/arch/mips/sibyte/cfe/smp.c b/arch/mips/sibyte/cfe/smp.c
index e8485124b8f..4477af3d807 100644
--- a/arch/mips/sibyte/cfe/smp.c
+++ b/arch/mips/sibyte/cfe/smp.c
@@ -60,7 +60,7 @@ void prom_boot_secondary(int cpu, struct task_struct *idle)
 
 	retval = cfe_cpu_start(cpu_logical_map(cpu), &smp_bootstrap,
 			       __KSTK_TOS(idle),
-			       (unsigned long)idle->thread_info, 0);
+			       (unsigned long)task_thread_info(idle), 0);
 	if (retval != 0)
 		printk("cfe_start_cpu(%i) returned %i\n" , cpu, retval);
 }