On Tue, 18 Nov 2014 22:33:33 -0500
Steven Rostedt <rost...@goodmis.org> wrote:
> +/*
> + * This is used by __kernel_text_address() to return true if the
> + * the address is on a dynamically allocated trampoline that would
> + * not return true for either core_kernel_text() or
> + * is_module_text_address().
> + */
> +bool is_ftrace_trampoline(unsigned long addr)
> +{
> + struct ftrace_ops *op;
> +
> + do_for_each_ftrace_op(op, ftrace_ops_list) {
> + /*
> + * This is to check for dynamically allocated trampolines.
> + * Trampolines that are in kernel text will have
> + * core_kernel_text() return true.
> + */
> + if (op->trampoline && op->trampoline_size)
> + if (addr >= op->trampoline &&
> + addr < op->trampoline + op->trampoline_size)
> + return true;
> + } while_for_each_ftrace_op(op);
> +
> + return false;
> +}
> +
Hmm, preemption should be disabled here. We can't guarantee that the
caller will have that. Will update.
-- Steve
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