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Commit 8b98adc7 authored by Harshdeep Dhatt's avatar Harshdeep Dhatt
Browse files

msm: kgsl: Do not purge non-overlapping freemem list entries 



A freemem list entry maybe truncated/deleted even if it doesn't
overlap with a new buffer, for example, if the new buffer is entirely
to the left or right of the entry. Fix the conditional logic so
that an entry may be truncated/deleted only if it overlaps with
the new buffer.

Change-Id: Ib1519f20d3b56c1e0ed36e9e0afb33c1b31d6166
Signed-off-by: default avatarHarshdeep Dhatt <hdhatt@codeaurora.org>
parent 3ff10850

drivers/gpu/msm/kgsl.c

+8 −7
Original line number Diff line number Diff line
@@ -186,11 +186,12 @@ static void kgsl_memfree_purge(pid_t ptname, uint64_t gpuaddr, 
			gpuaddr < entry->gpuaddr + entry->size) {

			/* truncate the end of the entry */

			entry->size = gpuaddr - entry->gpuaddr;

		} else if (gpuaddr <= entry->gpuaddr &&

		} else if (gpuaddr <= entry->gpuaddr) {

			if (gpuaddr + size > entry->gpuaddr &&

				gpuaddr + size < entry->gpuaddr + entry->size)

				/* Truncate the beginning of the entry */

				entry->gpuaddr = gpuaddr + size;

		else if (gpuaddr + size >= entry->gpuaddr + entry->size) {

			else if (gpuaddr + size >= entry->gpuaddr + entry->size)

				/* Remove the entire entry */

				entry->size = 0;

		}