On 12/8/20 8:48 AM, Paul Cercueil wrote: > > Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx> Hi Paul, Why not just add these 2 new macros to <linux/kconfig.h> ? Maybe you don't want to add the other 2 headers there also? > --- > include/linux/if_enabled.h | 22 ++++++++++++++++++++++ > 1 file changed, 22 insertions(+) > create mode 100644 include/linux/if_enabled.h > > diff --git a/include/linux/if_enabled.h b/include/linux/if_enabled.h > new file mode 100644 > index 000000000000..8189d1402340 > --- /dev/null > +++ b/include/linux/if_enabled.h > @@ -0,0 +1,22 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +#ifndef __LINUX_IF_ENABLED_H > +#define __LINUX_IF_ENABLED_H > + > +#include <linux/build_bug.h> > +#include <linux/compiler_types.h> > +#include <linux/kconfig.h> > + > +/* > + * IF_ENABLED_OR_ELSE(CONFIG_FOO, a, b) evaluates to (a) if CONFIG_FOO is set > + * to 'y' or 'm', (b) otherwise. > + */ > +#define IF_ENABLED_OR_ELSE(option, a, b) \ > + (BUILD_BUG_ON_ZERO(__same_type((a), (b))) || IS_ENABLED(option) ? (a) : (b)) > + > +/* > + * IF_ENABLED(CONFIG_FOO, ptr) evaluates to (ptr) if CONFIG_FOO is set to 'y' > + * or 'm', NULL otherwise. > + */ > +#define IF_ENABLED(option, ptr) IF_ENABLED_OR_ELSE(option, ptr, NULL) > + > +#endif /* __LINUX_IF_ENABLED_H */ > thanks. -- ~Randy
