[IA64] Fix perfmon sysctl directory modes

[safe/jmp/linux-2.6] / arch / ia64 / kernel / process.c

diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index d7b7d3d..2418289 100644 (file)
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -20,20 +20,19 @@
 #include <linux/personality.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
-#include <linux/smp_lock.h>
 #include <linux/stddef.h>
 #include <linux/thread_info.h>
 #include <linux/unistd.h>
 #include <linux/efi.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
+#include <linux/kdebug.h>
 
 #include <asm/cpu.h>
 #include <asm/delay.h>
 #include <asm/elf.h>
 #include <asm/ia32.h>
 #include <asm/irq.h>
-#include <asm/kdebug.h>
 #include <asm/kexec.h>
 #include <asm/pgalloc.h>
 #include <asm/processor.h>
@@ -106,7 +105,8 @@ show_regs (struct pt_regs *regs)
        unsigned long ip = regs->cr_iip + ia64_psr(regs)->ri;
 
        print_modules();
-       printk("\nPid: %d, CPU %d, comm: %20s\n", current->pid, smp_processor_id(), current->comm);
+       printk("\nPid: %d, CPU %d, comm: %20s\n", task_pid_nr(current),
+                       smp_processor_id(), current->comm);
        printk("psr : %016lx ifs : %016lx ip  : [<%016lx>]    %s\n",
               regs->cr_ipsr, regs->cr_ifs, ip, print_tainted());
        print_symbol("ip is at %s\n", ip);
@@ -199,9 +199,13 @@ default_idle (void)
 {
        local_irq_enable();
        while (!need_resched()) {
-               if (can_do_pal_halt)
-                       safe_halt();
-               else
+               if (can_do_pal_halt) {
+                       local_irq_disable();
+                       if (!need_resched()) {
+                               safe_halt();
+                       }
+                       local_irq_enable();
+               } else
                        cpu_relax();
        }
 }
@@ -500,7 +504,8 @@ copy_thread (int nr, unsigned long clone_flags,
 
                /* Copy partially mapped page list */
                if (!retval)
-                       retval = ia32_copy_partial_page_list(p, clone_flags);
+                       retval = ia32_copy_ia64_partial_page_list(p,
+                                                               clone_flags);
        }
 #endif
 
@@ -514,7 +519,8 @@ copy_thread (int nr, unsigned long clone_flags,
 static void
 do_copy_task_regs (struct task_struct *task, struct unw_frame_info *info, void *arg)
 {
-       unsigned long mask, sp, nat_bits = 0, ip, ar_rnat, urbs_end, cfm;
+       unsigned long mask, sp, nat_bits = 0, ar_rnat, urbs_end, cfm;
+       unsigned long uninitialized_var(ip);    /* GCC be quiet */
        elf_greg_t *dst = arg;
        struct pt_regs *pt;
        char nat;
@@ -728,7 +734,7 @@ flush_thread (void)
        ia64_drop_fpu(current);
 #ifdef CONFIG_IA32_SUPPORT
        if (IS_IA32_PROCESS(task_pt_regs(current))) {
-               ia32_drop_partial_page_list(current);
+               ia32_drop_ia64_partial_page_list(current);
                current->thread.task_size = IA32_PAGE_OFFSET;
                set_fs(USER_DS);
        }
@@ -754,7 +760,7 @@ exit_thread (void)
                pfm_release_debug_registers(current);
 #endif
        if (IS_IA32_PROCESS(task_pt_regs(current)))
-               ia32_drop_partial_page_list(current);
+               ia32_drop_ia64_partial_page_list(current);
 }
 
 unsigned long
@@ -764,6 +770,9 @@ get_wchan (struct task_struct *p)
        unsigned long ip;
        int count = 0;
 
+       if (!p || p == current || p->state == TASK_RUNNING)
+               return 0;
+
        /*
         * Note: p may not be a blocked task (it could be current or
         * another process running on some other CPU.  Rather than
@@ -774,6 +783,8 @@ get_wchan (struct task_struct *p)
         */
        unw_init_from_blocked_task(&info, p);
        do {
+               if (p->state == TASK_RUNNING)
+                       return 0;
                if (unw_unwind(&info) < 0)
                        return 0;
                unw_get_ip(&info, &ip);