powerpc: Remove some unused functions
authorMichael Ellerman <mpe@ellerman.id.au>
Tue, 27 Jan 2015 05:48:03 +0000 (16:48 +1100)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 28 Jan 2015 04:00:24 +0000 (15:00 +1100)
Remove slice_set_psize() which is not used.

It was added in 3a8247cc2c85 "powerpc: Only demote individual slices
rather than whole process" but was never used.

Remove vsx_assist_exception() which is not used.

It was added in ce48b2100785 "powerpc: Add VSX context save/restore,
ptrace and signal support" but was never used.

Remove generic_mach_cpu_die() which is not used.

Its last caller was removed in 375f561a4131 "powerpc/powernv: Always go
into nap mode when CPU is offline".

Remove mpc7448_hpc2_power_off() and mpc7448_hpc2_halt() which are
unused.

These were introduced in c5d56332fd6c "[POWERPC] Add general support for
mpc7448hpc2 (Taiga) platform" but were never used.

This was partially found by using a static code analysis program called
cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
[mpe: Update changelog with details on when/why they are unused]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/include/asm/smp.h
arch/powerpc/kernel/smp.c
arch/powerpc/kernel/traps.c
arch/powerpc/mm/slice.c
arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c

index 5a6614a..d607df5 100644 (file)
@@ -64,7 +64,6 @@ DECLARE_PER_CPU(unsigned int, cpu_pvr);
 extern void migrate_irqs(void);
 int generic_cpu_disable(void);
 void generic_cpu_die(unsigned int cpu);
-void generic_mach_cpu_die(void);
 void generic_set_cpu_dead(unsigned int cpu);
 void generic_set_cpu_up(unsigned int cpu);
 int generic_check_cpu_restart(unsigned int cpu);
index 8ec017c..1cc4bdc 100644 (file)
@@ -434,20 +434,6 @@ void generic_cpu_die(unsigned int cpu)
        printk(KERN_ERR "CPU%d didn't die...\n", cpu);
 }
 
-void generic_mach_cpu_die(void)
-{
-       unsigned int cpu;
-
-       local_irq_disable();
-       idle_task_exit();
-       cpu = smp_processor_id();
-       printk(KERN_DEBUG "CPU%d offline\n", cpu);
-       __this_cpu_write(cpu_state, CPU_DEAD);
-       smp_wmb();
-       while (__this_cpu_read(cpu_state) != CPU_UP_PREPARE)
-               cpu_relax();
-}
-
 void generic_set_cpu_dead(unsigned int cpu)
 {
        per_cpu(cpu_state, cpu) = CPU_DEAD;
index e6595b7..19e4744 100644 (file)
@@ -1707,21 +1707,6 @@ void altivec_assist_exception(struct pt_regs *regs)
 }
 #endif /* CONFIG_ALTIVEC */
 
-#ifdef CONFIG_VSX
-void vsx_assist_exception(struct pt_regs *regs)
-{
-       if (!user_mode(regs)) {
-               printk(KERN_EMERG "VSX assist exception in kernel mode"
-                      " at %lx\n", regs->nip);
-               die("Kernel VSX assist exception", regs, SIGILL);
-       }
-
-       flush_vsx_to_thread(current);
-       printk(KERN_INFO "VSX assist not supported at %lx\n", regs->nip);
-       _exception(SIGILL, regs, ILL_ILLOPC, regs->nip);
-}
-#endif /* CONFIG_VSX */
-
 #ifdef CONFIG_FSL_BOOKE
 void CacheLockingException(struct pt_regs *regs, unsigned long address,
                           unsigned long error_code)
index ded0ea1..0f432a7 100644 (file)
@@ -645,35 +645,6 @@ void slice_set_user_psize(struct mm_struct *mm, unsigned int psize)
        spin_unlock_irqrestore(&slice_convert_lock, flags);
 }
 
-void slice_set_psize(struct mm_struct *mm, unsigned long address,
-                    unsigned int psize)
-{
-       unsigned char *hpsizes;
-       unsigned long i, flags;
-       u64 *lpsizes;
-
-       spin_lock_irqsave(&slice_convert_lock, flags);
-       if (address < SLICE_LOW_TOP) {
-               i = GET_LOW_SLICE_INDEX(address);
-               lpsizes = &mm->context.low_slices_psize;
-               *lpsizes = (*lpsizes & ~(0xful << (i * 4))) |
-                       ((unsigned long) psize << (i * 4));
-       } else {
-               int index, mask_index;
-               i = GET_HIGH_SLICE_INDEX(address);
-               hpsizes = mm->context.high_slices_psize;
-               mask_index = i & 0x1;
-               index = i >> 1;
-               hpsizes[index] = (hpsizes[index] &
-                                 ~(0xf << (mask_index * 4))) |
-                       (((unsigned long)psize) << (mask_index * 4));
-       }
-
-       spin_unlock_irqrestore(&slice_convert_lock, flags);
-
-       copro_flush_all_slbs(mm);
-}
-
 void slice_set_range_psize(struct mm_struct *mm, unsigned long start,
                           unsigned long len, unsigned int psize)
 {
index beeaf4a..df4ad95 100644 (file)
@@ -156,17 +156,6 @@ void mpc7448_hpc2_restart(char *cmd)
        for (;;) ;              /* Spin until reset happens */
 }
 
-void mpc7448_hpc2_power_off(void)
-{
-       local_irq_disable();
-       for (;;) ;              /* No way to shut power off with software */
-}
-
-void mpc7448_hpc2_halt(void)
-{
-       mpc7448_hpc2_power_off();
-}
-
 /*
  * Called very early, device-tree isn't unflattened
  */