Commit 43f06e81 authored by Kuan-Wei Chiu's avatar Kuan-Wei Chiu Committed by Alex Deucher
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drm/amd/display: Optimize remove_duplicates() from O(N^2) to O(N) 



Replace the previous O(N^2) implementation of remove_duplicates() with
a O(N) version using a fast/slow pointer approach. The new version
keeps only the first occurrence of each element and compacts the array
in place, improving efficiency without changing functionality.

Signed-off-by: default avatarKuan-Wei Chiu <visitorckw@gmail.com>
Reviewed-by: default avatarAlex Hung <alex.hung@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 51cb93aa

drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_pmo/dml2_pmo_dcn3.c

+11 −10
Original line number Diff line number Diff line
@@ -48,18 +48,19 @@ static void set_reserved_time_on_all_planes_with_stream_index(struct display_con 


static void remove_duplicates(double *list_a, int *list_a_size)

{

	int cur_element = 0;

	// For all elements b[i] in list_b[]

	while (cur_element < *list_a_size - 1) {

		if (list_a[cur_element] == list_a[cur_element + 1]) {

			for (int j = cur_element + 1; j < *list_a_size - 1; j++) {

				list_a[j] = list_a[j + 1];

			}

			*list_a_size = *list_a_size - 1;

		} else {

			cur_element++;

	int j = 0;



	if (*list_a_size == 0)

		return;



	for (int i = 1; i < *list_a_size; i++) {

		if (list_a[j] != list_a[i]) {

			j++;

			list_a[j] = list_a[i];

		}

	}



	*list_a_size = j + 1;

}



static bool increase_mpc_combine_factor(unsigned int *mpc_combine_factor, unsigned int limit)