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Commit e7aaa400 authored by Sultan Alsawaf's avatar Sultan Alsawaf Committed by Razziell
Browse files

msm: mdss: Speed up mdss_mdp_get_format_params for UBWC formats 



In mdss_mdp_get_format_params, a very large array (mdss_mdp_format_map)
is scanned for a requested format first, and then when the format is
not found in the large array, a small array (mdss_mdp_format_ubwc_map)
is scanned for the requested format. This results in significant
overhead from needlessly scanning the large array for UBWC formats.

To fix this, scan the much-smaller mdss_mdp_format_ubwc_map array first
to search for a requested format.

Signed-off-by: default avatarSultan Alsawaf <sultan@kerneltoast.com>
Signed-off-by: default avatarZile995 <stefan.zivkovic995@gmail.com>
parent 77560ffa

drivers/video/msm/mdss/mdss_mdp_util.c

+4 −4
Original line number Diff line number Diff line
@@ -158,8 +158,8 @@ struct mdss_mdp_format_params *mdss_mdp_get_format_params(u32 format) 
	int i;

	bool fmt_found = false;



	for (i = 0; i < ARRAY_SIZE(mdss_mdp_format_map); i++) {

		fmt = &mdss_mdp_format_map[i];

	for (i = 0; i < ARRAY_SIZE(mdss_mdp_format_ubwc_map); i++) {

		fmt = &mdss_mdp_format_ubwc_map[i].mdp_format;

		if (format == fmt->format) {

			fmt_found = true;

			break;
@@ -167,8 +167,8 @@ struct mdss_mdp_format_params *mdss_mdp_get_format_params(u32 format) 
	}



	if (!fmt_found) {

		for (i = 0; i < ARRAY_SIZE(mdss_mdp_format_ubwc_map); i++) {

			fmt = &mdss_mdp_format_ubwc_map[i].mdp_format;

		for (i = 0; i < ARRAY_SIZE(mdss_mdp_format_map); i++) {

			fmt = &mdss_mdp_format_map[i];

			if (format == fmt->format)

				break;

		}