On Tue, Sep 28, 2010 at 11:40 PM, David Daney <ddaney@xxxxxxxxxxxxxxxxxx> wrote:
> +void arch_jump_label_text_poke_early(jump_label_t addr)
> +{
> + union mips_instruction *insn_p =
> + (union mips_instruction *)(unsigned long)addr;
> +
> + insn_p->word = 0; /* nop */
> + flush_icache_range((unsigned long)insn_p,
> + (unsigned long)insn_p + sizeof(*insn_p));
> +}
Can't this function be a no-op on MIPS? This seems to be
used on x86 to patch in the optimal nop instruction, but
on MIPS the optimal/only nop instruction should already
be in place at build time. Same thing for the SPARC
implementation.
Rabin
