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Commit 88bff86f authored by Puranam V G Tejaswi's avatar Puranam V G Tejaswi
Browse files

msm: kgsl: Flush mem workqueue and retry if failed to find SVM region 



In case we get -ENOMEM error when trying to find required SVM region,
flush mem workqueue and retry. It is possible that the required region
was already freed but the workqueue did not run.

Change-Id: I66b0c4dac2fbb8d3b66209b67174645ef37b10df
Signed-off-by: default avatarPuranam V G Tejaswi <pvgtejas@codeaurora.org>
parent 13404afb

drivers/gpu/msm/kgsl.c

+11 −0
Original line number Diff line number Diff line
@@ -2521,6 +2521,12 @@ static int kgsl_setup_anon_useraddr(struct kgsl_pagetable *pagetable, 
		ret = kgsl_mmu_set_svm_region(pagetable,

			(uint64_t) hostptr, (uint64_t) size);



		/* if OOM, retry once after flushing mem_workqueue */

		if (ret == -ENOMEM) {

			flush_workqueue(kgsl_driver.mem_workqueue);

			ret = kgsl_mmu_set_svm_region(pagetable,

				(uint64_t) hostptr, (uint64_t) size);

		}

		if (ret)

			return ret;
@@ -4894,6 +4900,11 @@ kgsl_get_unmapped_area(struct file *file, unsigned long addr, 
						pgoff, len, (int) val);

	} else {

		val = _get_svm_area(private, entry, addr, len, flags);

		/* if OOM, retry once after flushing mem_workqueue */

		if (val == -ENOMEM) {

			flush_workqueue(kgsl_driver.mem_workqueue);

			val = _get_svm_area(private, entry, addr, len, flags);

		}

		if (IS_ERR_VALUE(val))

			dev_err_ratelimited(device->dev,

					       "_get_svm_area: pid %d mmap_base %lx addr %lx pgoff %lx len %ld failed error %d\n",