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[PATCH] fbdev: stack reduction

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Shrink the stack when calling the drawing alignment functions.

Signed-off-by: James Simmons <jsimmons@www.infradead.org>
Cc: "Antonino A. Daplas" <adaplas@hotpop.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
James Simmons 2005-06-21 17:17:07 -07:00 committed by Linus Torvalds
parent 303b86d991
commit f1ab5dac25
6 changed files with 26 additions and 44 deletions
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9
drivers/video/console/bitblit.c
View File

@ -157,9 +157,9 @@ static void bit_putcs(struct vc_data *vc, struct fb_info *info,
src = buf;
}
fb_sysmove_buf_unaligned(info, &info->pixmap, dst, pitch,
src, idx, image.height,
shift_high, shift_low, mod);
fb_pad_unaligned_buffer(dst, pitch, src, idx,
image.height, shift_high,
shift_low, mod);
shift_low += mod;
dst += (shift_low >= 8) ? width : width - 1;
shift_low &= 7;
@ -175,8 +175,7 @@ static void bit_putcs(struct vc_data *vc, struct fb_info *info,
src = buf;
}
fb_sysmove_buf_aligned(info, &info->pixmap, dst, pitch,
src, idx, image.height);
fb_pad_aligned_buffer(dst, pitch, src, idx, image.height);
dst += width;
}
}

14
drivers/video/fbmem.c
View File

@ -78,9 +78,7 @@ EXPORT_SYMBOL(fb_get_color_depth);
/*
* Data padding functions.
*/
void fb_sysmove_buf_aligned(struct fb_info *info, struct fb_pixmap *buf,
u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch,
u32 height)
void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height)
{
int i;
@ -90,12 +88,10 @@ void fb_sysmove_buf_aligned(struct fb_info *info, struct fb_pixmap *buf,
dst += d_pitch;
}
}
EXPORT_SYMBOL(fb_sysmove_buf_aligned);
EXPORT_SYMBOL(fb_pad_aligned_buffer);
void fb_sysmove_buf_unaligned(struct fb_info *info, struct fb_pixmap *buf,
u8 *dst, u32 d_pitch, u8 *src, u32 idx,
u32 height, u32 shift_high, u32 shift_low,
u32 mod)
void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx, u32 height,
u32 shift_high, u32 shift_low, u32 mod)
{
u8 mask = (u8) (0xfff << shift_high), tmp;
int i, j;
@ -122,7 +118,7 @@ void fb_sysmove_buf_unaligned(struct fb_info *info, struct fb_pixmap *buf,
dst += d_pitch;
}
}
EXPORT_SYMBOL(fb_sysmove_buf_unaligned);
EXPORT_SYMBOL(fb_pad_unaligned_buffer);
/*
* we need to lock this section since fb_cursor

17
drivers/video/nvidia/nvidia.c
View File

@ -516,9 +516,9 @@ static struct backlight_controller nvidia_backlight_controller = {
static void nvidiafb_load_cursor_image(struct nvidia_par *par, u8 * data8,
u16 bg, u16 fg, u32 w, u32 h)
{
u32 *data = (u32 *) data8;
int i, j, k = 0;
u32 b, tmp;
u32 *data = (u32 *) data8;
w = (w + 1) & ~1;
@ -890,11 +890,11 @@ static int nvidiafb_cursor(struct fb_info *info, struct fb_cursor *cursor)
{
struct nvidia_par *par = info->par;
u8 data[MAX_CURS * MAX_CURS / 8];
u16 fg, bg;
int i, set = cursor->set;
u16 fg, bg;
if (cursor->image.width > MAX_CURS || cursor->image.height > MAX_CURS)
return soft_cursor(info, cursor);
return -ENXIO;
NVShowHideCursor(par, 0);
@ -931,21 +931,18 @@ static int nvidiafb_cursor(struct fb_info *info, struct fb_cursor *cursor)
if (src) {
switch (cursor->rop) {
case ROP_XOR:
for (i = 0; i < s_pitch * cursor->image.height;
i++)
for (i = 0; i < s_pitch * cursor->image.height; i++)
src[i] = dat[i] ^ msk[i];
break;
case ROP_COPY:
default:
for (i = 0; i < s_pitch * cursor->image.height;
i++)
for (i = 0; i < s_pitch * cursor->image.height; i++)
src[i] = dat[i] & msk[i];
break;
}
fb_sysmove_buf_aligned(info, &info->pixmap, data,
d_pitch, src, s_pitch,
cursor->image.height);
fb_pad_aligned_buffer(data, d_pitch, src, s_pitch,
cursor->image.height);
bg = ((info->cmap.red[bg_idx] & 0xf8) << 7) |
((info->cmap.green[bg_idx] & 0xf8) << 2) |

18
drivers/video/riva/fbdev.c
View File

@ -1582,12 +1582,11 @@ static int rivafb_cursor(struct fb_info *info, struct fb_cursor *cursor)
{
struct riva_par *par = (struct riva_par *) info->par;
u8 data[MAX_CURS * MAX_CURS/8];
u16 fg, bg;
int i, set = cursor->set;
u16 fg, bg;
if (cursor->image.width > MAX_CURS ||
cursor->image.height > MAX_CURS)
return soft_cursor(info, cursor);
if (cursor->image.width > MAX_CURS || cursor->image.height > MAX_CURS)
return -ENXIO;
par->riva.ShowHideCursor(&par->riva, 0);
@ -1625,21 +1624,18 @@ static int rivafb_cursor(struct fb_info *info, struct fb_cursor *cursor)
if (src) {
switch (cursor->rop) {
case ROP_XOR:
for (i = 0; i < s_pitch * cursor->image.height;
i++)
for (i = 0; i < s_pitch * cursor->image.height; i++)
src[i] = dat[i] ^ msk[i];
break;
case ROP_COPY:
default:
for (i = 0; i < s_pitch * cursor->image.height;
i++)
for (i = 0; i < s_pitch * cursor->image.height; i++)
src[i] = dat[i] & msk[i];
break;
}
fb_sysmove_buf_aligned(info, &info->pixmap, data,
d_pitch, src, s_pitch,
cursor->image.height);
fb_pad_aligned_buffer(data, d_pitch, src, s_pitch,
cursor->image.height);
bg = ((info->cmap.red[bg_idx] & 0xf8) << 7) |
((info->cmap.green[bg_idx] & 0xf8) << 2) |

5
drivers/video/softcursor.c
View File

@ -58,13 +58,10 @@ int soft_cursor(struct fb_info *info, struct fb_cursor *cursor)
} else
memcpy(src, image->data, dsize);
fb_sysmove_buf_aligned(info, &info->pixmap, dst, d_pitch, src,
s_pitch, image->height);
fb_pad_aligned_buffer(dst, d_pitch, src, s_pitch, image->height);
image->data = dst;
info->fbops->fb_imageblit(info, image);
kfree(src);
return 0;
}

7
include/linux/fb.h
View File

@ -816,12 +816,9 @@ extern int unregister_framebuffer(struct fb_info *fb_info);
extern int fb_prepare_logo(struct fb_info *fb_info);
extern int fb_show_logo(struct fb_info *fb_info);
extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
extern void fb_sysmove_buf_unaligned(struct fb_info *info, struct fb_pixmap *buf,
u8 *dst, u32 d_pitch, u8 *src, u32 idx,
extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
u32 height, u32 shift_high, u32 shift_low, u32 mod);
extern void fb_sysmove_buf_aligned(struct fb_info *info, struct fb_pixmap *buf,
u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch,
u32 height);
extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
extern void fb_set_suspend(struct fb_info *info, int state);
extern int fb_get_color_depth(struct fb_var_screeninfo *var);
extern int fb_get_options(char *name, char **option);