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powerpc: Remove some unused functions

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Remove slice_set_psize() which is not used.

It was added in 3a8247cc2c "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 ce48b21007 "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 375f561a41 "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 c5d56332fd "[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>
This commit is contained in:
Michael Ellerman 2015-01-27 16:48:03 +11:00
parent 1dcee55fea
commit 8aa989b8fb
5 changed files with 0 additions and 70 deletions
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1
arch/powerpc/include/asm/smp.h
View 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);

14
arch/powerpc/kernel/smp.c
View 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;

15
arch/powerpc/kernel/traps.c
View 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)

29
arch/powerpc/mm/slice.c
View 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)
{

11
arch/powerpc/platforms/embedded6xx/mpc7448_hpc2.c
View 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
*/