> (gdb) ####################################
> (gdb) # c0228ec3, stack size: 764 bytes #
> (gdb) ####################################
> (gdb) 0xc0228ec3 is in calc_mode_timings (drivers/video/fbmon.c:317).
fix below.
Ingo
--
quick hack to remove a 764 bytes stack footprint from fbmon.c. Codepath
is most likely serialized but with the semaphore it's for sure.
Signed-off-by: Ingo Molnar <[email protected]>
Index: linux/drivers/video/fbmon.c
===================================================================
--- linux.orig/drivers/video/fbmon.c
+++ linux/drivers/video/fbmon.c
@@ -315,9 +315,11 @@ static int edid_is_monitor_block(unsigne
static void calc_mode_timings(int xres, int yres, int refresh, struct fb_videomode *mode)
{
- struct fb_var_screeninfo var;
- struct fb_info info;
-
+ static struct fb_var_screeninfo var;
+ static struct fb_info info;
+ static DECLARE_MUTEX(fb_lock);
+
+ down(&fb_lock);
var.xres = xres;
var.yres = yres;
fb_get_mode(FB_VSYNCTIMINGS | FB_IGNOREMON,
@@ -334,6 +336,7 @@ static void calc_mode_timings(int xres,
mode->vsync_len = var.vsync_len;
mode->vmode = 0;
mode->sync = 0;
+ up(&fb_lock);
}
static int get_est_timing(unsigned char *block, struct fb_videomode *mode)
-
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