| Message ID | 20240926115911.620624-1-qianqiang.liu@163.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | fbcon: break earlier in search_fb_in_map and search_for_mapped_con | expand |
On 9/26/24 13:59, Qianqiang Liu wrote: > Break the for loop immediately upon finding the target, making the > process more efficient. > > Signed-off-by: Qianqiang Liu <qianqiang.liu@163.com> applied. Thanks! Helge > --- > drivers/video/fbdev/core/fbcon.c | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) > > diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c > index d9abae2516d8..e8b4e8c119b5 100644 > --- a/drivers/video/fbdev/core/fbcon.c > +++ b/drivers/video/fbdev/core/fbcon.c > @@ -512,8 +512,10 @@ static int search_fb_in_map(int idx) > int i, retval = 0; > > for (i = first_fb_vc; i <= last_fb_vc; i++) { > - if (con2fb_map[i] == idx) > + if (con2fb_map[i] == idx) { > retval = 1; > + break; > + } > } > return retval; > } > @@ -523,8 +525,10 @@ static int search_for_mapped_con(void) > int i, retval = 0; > > for (i = first_fb_vc; i <= last_fb_vc; i++) { > - if (con2fb_map[i] != -1) > + if (con2fb_map[i] != -1) { > retval = 1; > + break; > + } > } > return retval; > }
Thu, Sep 26, 2024 at 07:59:11PM +0800, Qianqiang Liu kirjoitti: > Break the for loop immediately upon finding the target, making the > process more efficient. You may make it even more effecient (in terms of code readability as I believe compiler optimizes this anyway to the same): > int i, retval = 0; > > for (i = first_fb_vc; i <= last_fb_vc; i++) { > - if (con2fb_map[i] == idx) > + if (con2fb_map[i] == idx) { > retval = 1; > + break; > + } return 1; > } > return retval; return 0; > } ... > int i, retval = 0; > > for (i = first_fb_vc; i <= last_fb_vc; i++) { > - if (con2fb_map[i] != -1) > + if (con2fb_map[i] != -1) { > retval = 1; > + break; > + } > } > return retval; Ditto. ... Since it's applied, you can consider a followup.
diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index d9abae2516d8..e8b4e8c119b5 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -512,8 +512,10 @@ static int search_fb_in_map(int idx) int i, retval = 0; for (i = first_fb_vc; i <= last_fb_vc; i++) { - if (con2fb_map[i] == idx) + if (con2fb_map[i] == idx) { retval = 1; + break; + } } return retval; } @@ -523,8 +525,10 @@ static int search_for_mapped_con(void) int i, retval = 0; for (i = first_fb_vc; i <= last_fb_vc; i++) { - if (con2fb_map[i] != -1) + if (con2fb_map[i] != -1) { retval = 1; + break; + } } return retval; }
Break the for loop immediately upon finding the target, making the process more efficient. Signed-off-by: Qianqiang Liu <qianqiang.liu@163.com> --- drivers/video/fbdev/core/fbcon.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)