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Commit 552f1199 authored by Kamal Agrawal's avatar Kamal Agrawal Committed by Rohan Sethi
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msm: kgsl: Use non-atomic snapshot memory if it is unused 



Over time, memory gets fragmented, and eventually, a system that is
up for a long time may have only a few physically contiguous pages.
Hence, there is a chance of atomic snapshot memory allocation failure.
Use non-atomic snapshot memory if it is unused as it is allocated
during probe time.

Change-Id: I725adeb80614a775f92213ebe9768f4f2f1c70a2
Signed-off-by: default avatarKamal Agrawal <kamaagra@codeaurora.org>
Signed-off-by: default avatarRohan Sethi <rohsethi@codeaurora.org>
parent 91a7f066

drivers/gpu/msm/kgsl_snapshot.c

+11 −6
Original line number Diff line number Diff line
@@ -687,6 +687,10 @@ static void kgsl_device_snapshot_atomic(struct kgsl_device *device) 
	}



	device->snapshot_memory_atomic.size = device->snapshot_memory.size;

	if (!device->snapshot_faultcount) {

		/* Use non-atomic snapshot memory if it is unused */

		device->snapshot_memory_atomic.ptr = device->snapshot_memory.ptr;

	} else {

		device->snapshot_memory_atomic.ptr = devm_kzalloc(&device->pdev->dev,

				device->snapshot_memory_atomic.size, GFP_ATOMIC);
@@ -695,6 +699,7 @@ static void kgsl_device_snapshot_atomic(struct kgsl_device *device) 
				"KGSL failed to allocate memory for atomic snapshot\n");

			return;

		}

	}



	/* Allocate memory for the snapshot instance */

	snapshot = kzalloc(sizeof(*snapshot), GFP_ATOMIC);