When CONFIG_SMP is not set, wbinvd_on_all_cpus() is not declared, due to missing <asm/smp.h>.

Fixes this build error:

../drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c: In function 'i915_gem_object_get_pages_dmabuf': ../drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c:251:3: error: implicit declaration of function 'wbinvd_on_all_cpus'; did you mean 'wrmsr_on_cpus'? [-Werror=implicit-function-declaration] wbinvd_on_all_cpus();

Fixes: a035154da45d ("drm/i915/dmabuf: add paranoid flush-on-acquire") Signed-off-by: Randy Dunlap rdunlap@infradead.org To: Jani Nikula jani.nikula@linux.intel.com Cc: Thomas Hellström thomas.hellstrom@linux.intel.com Cc: Matthew Auld matthew.auld@intel.com Cc: Joonas Lahtinen joonas.lahtinen@linux.intel.com Cc: Rodrigo Vivi rodrigo.vivi@intel.com Cc: intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org --- drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c | 1 + 1 file changed, 1 insertion(+)

--- linux-next-20211027.orig/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c +++ linux-next-20211027/drivers/gpu/drm/i915/gem/i915_gem_dmabuf.c @@ -8,6 +8,7 @@ #include <linux/highmem.h> #include <linux/dma-resv.h> #include <linux/module.h> +#include <asm/smp.h>

#include "i915_drv.h" #include "i915_gem_object.h"