Re: [PATCH] sched/rt: hide push_irq_work_func declaration

From: Arnd Bergmann
Date: Thu Nov 12 2015 - 10:15:16 EST

On Thursday 12 November 2015 09:47:39 Steven Rostedt wrote:
> > -#ifdef CONFIG_SMP
> Why IS_ENABLED() and not defined()?
> #if defined(CONFIG_SMP) && defined(HAVE_RT_PUSH_IPI)
> I thought IS_ENABLED() is used for C code, like:
> [...]
> }

"#if IS_ENABLED(CONFIG_foo)" has another property, which is
to evaluate to true when Kconfig has set the symbol to "=m".
Obviously that cannot happen for CONFIG_SMP, but some
maintainers prefer using IS_ENABLED() consistently for all
config symbols.

I don't care much either way, and it's easily changed if
we still want the patch and you prefer a plain #if defined().

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at