fbcon: use kvmalloc() for scrollback buffer (23cd78e2) · Commits · 戴 / test

Scrollback frame buffer is rather big - 32K, so it requires 3rd order page, so let's use kvmalloc() instead of ordinary kmalloc() for it. Signed-off-by:

Konstantin Khorenko <khorenko@virtuozzo.com> Signed-off-by:

Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>

drivers/video/fbdev/core/fbcon.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -999,7 +999,7 @@ static const char *fbcon_startup(void)
		if (!softback_buf) {
		softback_buf =
		(unsigned long)
		kmalloc(fbcon_softback_size,
		kvmalloc(fbcon_softback_size,
		GFP_KERNEL);
		if (!softback_buf) {
		fbcon_softback_size = 0;
		@@ -1008,7 +1008,7 @@ static const char *fbcon_startup(void)
		}
		} else {
		if (softback_buf) {
		kfree((void *) softback_buf);
		kvfree((void *) softback_buf);
		softback_buf = 0;
		softback_top = 0;
		}
		@@ -3672,7 +3672,7 @@ static void fbcon_exit(void)
		}
		#endif

		kfree((void *)softback_buf);
		kvfree((void *)softback_buf);
		softback_buf = 0UL;

		for_each_registered_fb(i) {

Admin message