Re: [PATCH 2/2 v2] tracing/syscalls: support for syscalls tracingon x86-64

[Andrew Morton]

On Fri, 13 Mar 2009 15:42:12 +0100 Frederic Weisbecker <fweisbec@xxxxxxxxx> wrote:

> +static struct syscall_metadata *find_syscall_meta(unsigned long *syscall)
> +{
> +	struct syscall_metadata *start;
> +	struct syscall_metadata *stop;
> +	char str[KSYM_SYMBOL_LEN];
> +
> +
> +	start = (struct syscall_metadata *)__start_syscalls_metadata;
> +	stop = (struct syscall_metadata *)__stop_syscalls_metadata;
> +	kallsyms_lookup((unsigned long) syscall, NULL, NULL, NULL, str);
> +
> +	for ( ; start < stop; start++) {
> +		if (start->name && !strcmp(start->name, str))
> +			return start;
> +	}
> +	return NULL;
> +}

afacit this feature can be enabled when CONFIG_KALLSYMS=n.  Does that make
sense?

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