diff --git a/src/fmm.c b/src/fmm.c
index 2264e6fa9d..32562f363e 100644
--- a/src/fmm.c
+++ b/src/fmm.c
@@ -767,8 +767,8 @@ bool fmm_is_inside_some_aperture(void *address)
 #ifdef DEBUG_PRINT_APERTURE
 static void aperture_print(aperture_t *app)
 {
-	printf("\t Base: %p\n", app->base);
-	printf("\t Limit: %p\n", app->limit);
+	pr_info("\t Base: %p\n", app->base);
+	pr_info("\t Limit: %p\n", app->limit);
 }
 
 static void manageable_aperture_print(manageable_aperture_t *app)
@@ -776,16 +776,16 @@ static void manageable_aperture_print(manageable_aperture_t *app)
 	vm_area_t *cur = app->vm_ranges;
 	vm_object_t *object = app->vm_objects;
 
-	printf("\t Base: %p\n", app->base);
-	printf("\t Limit: %p\n", app->limit);
-	printf("\t Ranges:\n");
+	pr_info("\t Base: %p\n", app->base);
+	pr_info("\t Limit: %p\n", app->limit);
+	pr_info("\t Ranges:\n");
 	while (cur) {
-		printf("\t\t Range [%p - %p]\n", cur->start, cur->end);
+		pr_info("\t\t Range [%p - %p]\n", cur->start, cur->end);
 		cur = cur->next;
 	};
-	printf("\t Objects:\n");
+	pr_info("\t Objects:\n");
 	while (object) {
-		printf("\t\t Object [%p - %" PRIu64 "]\n",
+		pr_info("\t\t Object [%p - %" PRIu64 "]\n",
 				object->start, object->size);
 		object = object->next;
 	};
@@ -796,19 +796,19 @@ void fmm_print(uint32_t gpu_id)
 	int32_t gpu_mem_id = gpu_mem_find_by_gpu_id(gpu_id);
 
 	if (gpu_mem_id >= 0) { /* Found */
-		printf("LDS aperture:\n");
+		pr_info("LDS aperture:\n");
 		aperture_print(&gpu_mem[gpu_mem_id].lds_aperture);
-		printf("GPUVM aperture:\n");
+		pr_info("GPUVM aperture:\n");
 		manageable_aperture_print(&gpu_mem[gpu_mem_id].gpuvm_aperture);
-		printf("Scratch aperture:\n");
+		pr_info("Scratch aperture:\n");
 		manageable_aperture_print(&gpu_mem[gpu_mem_id].scratch_aperture);
-		printf("Scratch backing memory:\n");
+		pr_info("Scratch backing memory:\n");
 		manageable_aperture_print(&gpu_mem[gpu_mem_id].scratch_physical);
 	}
 
-	printf("dGPU aperture:\n");
+	pr_info("dGPU aperture:\n");
 	manageable_aperture_print(&svm.dgpu_aperture);
-	printf("dGPU alt aperture:\n");
+	pr_info("dGPU alt aperture:\n");
 	manageable_aperture_print(&svm.dgpu_alt_aperture);
 
 }
@@ -1533,7 +1533,7 @@ HSAKMT_STATUS fmm_init_process_apertures(unsigned int NumNodes)
 						    KFD_IOC_CACHE_POLICY_COHERENT,
 						    alt_base, alt_size);
 			if (err != 0) {
-				fprintf(stderr, "Error! Failed to set alt aperture for GPU [0x%x]\n",
+				pr_err("Failed to set alt aperture for GPU [0x%x]\n",
 						gpu_mem[gpu_mem_id].gpu_id);
 				ret = HSAKMT_STATUS_ERROR;
 			}
@@ -1911,10 +1911,10 @@ static void print_device_id_array(uint32_t *device_id_array, uint32_t device_id_
 #ifdef DEBUG_PRINT_APERTURE
 	device_id_array_size /= sizeof(uint32_t);
 
-	printf("device id array size %d\n", device_id_array_size);
+	pr_info("device id array size %d\n", device_id_array_size);
 
 	for (uint32_t i = 0 ; i < device_id_array_size; i++)
-		printf("%d . 0x%x\n", (i+1), device_id_array[i]);
+		pr_info("%d . 0x%x\n", (i+1), device_id_array[i]);
 #endif
 }
 
@@ -2191,8 +2191,7 @@ static HSAKMT_STATUS dgpu_mem_init(uint32_t gpu_mem_id, void **base, void **limi
 
 	ret = get_dgpu_vm_limit(&max_vm_limit_in_gb);
 	if (ret != HSAKMT_STATUS_SUCCESS) {
-		fprintf(stderr,
-			"Unable to find vm_size for dGPU, assuming 64GB.\n");
+		pr_err("Unable to find vm_size for dGPU, assuming 64GB.\n");
 		max_vm_limit_in_gb = 64;
 	}
 	max_vm_limit = ((HSAuint64)max_vm_limit_in_gb << 30) - 1;
@@ -2216,15 +2215,13 @@ static HSAKMT_STATUS dgpu_mem_init(uint32_t gpu_mem_id, void **base, void **limi
 			munmap(ret_addr, len);
 		}
 		if (!ret_addr) {
-			fprintf(stderr,
-				"Failed to reserve %uGB for SVM ...\n",
+			pr_err("Failed to reserve %uGB for SVM ...\n",
 				(unsigned int)(len >> 30));
 			continue;
 		}
 		if ((HSAuint64)ret_addr + min_vm_size - 1 > max_vm_limit) {
 			/* addressable size is less than the minimum */
-			fprintf(stderr,
-				"Got %uGB for SVM at %p with only %dGB usable ...\n",
+			pr_warn("Got %uGB for SVM at %p with only %dGB usable ...\n",
 				(unsigned int)(len >> 30), ret_addr,
 				(int)(((HSAint64)max_vm_limit -
 				       (HSAint64)ret_addr) >> 30));
@@ -2237,8 +2234,7 @@ static HSAKMT_STATUS dgpu_mem_init(uint32_t gpu_mem_id, void **base, void **limi
 	}
 
 	if (!found) {
-		fprintf(stderr,
-			"Failed to reserve SVM address range. Giving up.\n");
+		pr_err("Failed to reserve SVM address range. Giving up.\n");
 		return HSAKMT_STATUS_ERROR;
 	}
 
@@ -2421,8 +2417,7 @@ HSAKMT_STATUS fmm_register_memory(void *address, uint64_t size_in_bytes,
 		if ((gpu_id_array_size != object->registered_device_id_array_size)
 			|| memcmp(object->registered_device_id_array,
 					gpu_id_array, gpu_id_array_size)) {
-			fprintf(stderr,
-				"Error. Changing nodes in a registered addr.\n");
+			pr_err("Cannot change nodes in a registered addr.\n");
 			return HSAKMT_STATUS_MEMORY_ALREADY_REGISTERED;
 		} else
 			return HSAKMT_STATUS_SUCCESS;
diff --git a/src/memory.c b/src/memory.c
index c4785b9ec1..fcf201a3ad 100644
--- a/src/memory.c
+++ b/src/memory.c
@@ -172,7 +172,7 @@ HSAKMT_STATUS HSAKMTAPI hsaKmtFreeMemory(void *MemoryAddress,
 	CHECK_KFD_OPEN();
 
 	if (!MemoryAddress) {
-		fprintf(stderr, "FIXME: freeing NULL pointer\n");
+		pr_err("FIXME: freeing NULL pointer\n");
 		return HSAKMT_STATUS_ERROR;
 	}
 
@@ -308,7 +308,7 @@ static uint64_t convertHsaToKfdRange(HsaMemoryRange *HsaRange)
 {
 	if (sizeof(struct kfd_memory_range) !=
 		sizeof(HsaMemoryRange)) {
-		fprintf(stderr, "Struct size mismatch in thunk. Cannot cast Hsa Range to KFD IOCTL range\n");
+		pr_err("Struct size mismatch in thunk. Cannot cast Hsa Range to KFD IOCTL range\n");
 		return 0;
 	}
 	return (uint64_t) HsaRange;
@@ -395,7 +395,7 @@ HSAKMT_STATUS HSAKMTAPI hsaKmtMapMemoryToGPU(void *MemoryAddress,
 	CHECK_KFD_OPEN();
 
 	if (!MemoryAddress) {
-		fprintf(stderr, "FIXME: mapping NULL pointer\n");
+		pr_err("FIXME: mapping NULL pointer\n");
 		return HSAKMT_STATUS_ERROR;
 	}
 
@@ -419,7 +419,7 @@ HSAKMT_STATUS HSAKMTAPI hsaKmtMapMemoryToGPUNodes(void *MemoryAddress,
 	HSAKMT_STATUS ret;
 
 	if (!MemoryAddress) {
-		fprintf(stderr, "FIXME: mapping NULL pointer\n");
+		pr_err("FIXME: mapping NULL pointer\n");
 		return HSAKMT_STATUS_ERROR;
 	}
 
@@ -443,7 +443,7 @@ HSAKMT_STATUS HSAKMTAPI hsaKmtUnmapMemoryToGPU(void *MemoryAddress)
 
 	if (!MemoryAddress) {
 		/* Workaround for runtime bug */
-		fprintf(stderr, "FIXME: Unmapping NULL pointer\n");
+		pr_err("FIXME: Unmapping NULL pointer\n");
 		return HSAKMT_STATUS_SUCCESS;
 	}
 
diff --git a/src/openclose.c b/src/openclose.c
index 204b31c360..3a1a17b941 100644
--- a/src/openclose.c
+++ b/src/openclose.c
@@ -141,7 +141,7 @@ HSAKMT_STATUS HSAKMTAPI hsaKmtOpenKFD(void)
 			goto init_doorbell_failed;
 
 		if (init_device_debugging_memory(sys_props.NumNodes) != HSAKMT_STATUS_SUCCESS)
-			printf("Insufficient Memory. Debugging unavailable\n");
+			pr_warn("Insufficient Memory. Debugging unavailable\n");
 
 		mask = umask(0); /* save the current umask */
 		/* We don't want the existing umask to mask out S_IWOTH */
@@ -151,11 +151,10 @@ HSAKMT_STATUS HSAKMTAPI hsaKmtOpenKFD(void)
 				0666);
 		umask(mask); /* restore the original umask */
 		if (amd_hsa_thunk_lock_fd < 0)
-			fprintf(stderr,
-			"Profiling of privileged counters is not available\n");
+			pr_warn("Profiling of privileged counters is not available\n");
 		if (init_counter_props(sys_props.NumNodes) !=
 						HSAKMT_STATUS_SUCCESS)
-			fprintf(stderr, "Profiling is not available\n");
+			pr_warn("Profiling is not available\n");
 	} else {
 		kfd_open_count++;
 		result = HSAKMT_STATUS_SUCCESS;
diff --git a/src/perfctr.c b/src/perfctr.c
index f54599cd46..29801a686f 100644
--- a/src/perfctr.c
+++ b/src/perfctr.c
@@ -385,8 +385,7 @@ static HSAKMT_STATUS open_perf_event_fd(struct perf_trace_block *block)
 		return HSAKMT_STATUS_INVALID_HANDLE;
 
 	if (getuid()) {
-		fprintf(stderr,
-			"Error. Must be root to open perf_event.\n");
+		pr_err("Must be root to open perf_event.\n");
 		return HSAKMT_STATUS_ERROR;
 	}
 
@@ -560,7 +559,7 @@ HSAKMT_STATUS HSAKMTAPI hsaKmtPmcRegisterTrace(HSAuint32 NodeId,
 		return HSAKMT_STATUS_INVALID_NODE_UNIT;
 
 	if (NumberOfCounters > MAX_COUNTERS) {
-		fprintf(stderr, "Error: MAX_COUNTERS is too small for %d.\n",
+		pr_err("MAX_COUNTERS is too small for %d.\n",
 			NumberOfCounters);
 		return HSAKMT_STATUS_NO_MEMORY;
 	}
@@ -588,11 +587,11 @@ HSAKMT_STATUS HSAKMTAPI hsaKmtPmcRegisterTrace(HSAuint32 NodeId,
 			continue;
 		concurrent_limit = get_block_concurrent_limit(NodeId, i);
 		if (!concurrent_limit) {
-			fprintf(stderr, "Invalid block ID: %d\n", i);
+			pr_err("Invalid block ID: %d\n", i);
 			return HSAKMT_STATUS_INVALID_PARAMETER;
 		}
 		if (num_counters[i] > concurrent_limit) {
-			fprintf(stderr, "Counters exceed the limit.\n");
+			pr_err("Counters exceed the limit.\n");
 			return HSAKMT_STATUS_INVALID_PARAMETER;
 		}
 		num_blocks++;
diff --git a/src/pmc_table.c b/src/pmc_table.c
index 50ff81a521..e4c81f2949 100644
--- a/src/pmc_table.c
+++ b/src/pmc_table.c
@@ -1628,7 +1628,7 @@ static HSAKMT_STATUS alloc_pmc_blocks_iommu(void)
 			continue;
 		if (snprintf(path, len, "%s/%s", sysfs_amdiommu_event_path,
 						dent->d_name) >= len) {
-			fprintf(stderr, "Increase path length.\n");
+			pr_err("Increase path length.\n");
 			ret = HSAKMT_STATUS_NO_MEMORY;
 			goto out;
 		}
@@ -1644,8 +1644,7 @@ static HSAKMT_STATUS alloc_pmc_blocks_iommu(void)
 		}
 		if (num > max_counter_id)
 		/* This should never happen. If it does, check IOMMU driver. */
-			fprintf(stderr,
-				"Error: max_counter_id %d is set too small.\n",
+			pr_err("max_counter_id %d is set too small.\n",
 				max_counter_id);
 		else {
 			counter_id[num] = 1;
@@ -1671,7 +1670,7 @@ static HSAKMT_STATUS alloc_pmc_blocks_iommu(void)
 		"/sys/devices/virtual/kfd/kfd/topology/nodes",
 		0, /* IOMMU is in node 0. Change this if NUMA is introduced to APU. */
 		"perf/iommu/max_concurrent") >= len) {
-		fprintf(stderr, "Increase path length\n");
+		pr_err("Increase path length\n");
 		ret = HSAKMT_STATUS_NO_MEMORY;
 		goto out;
 	};
diff --git a/src/topology.c b/src/topology.c
index 2456a9c197..40d3316661 100644
--- a/src/topology.c
+++ b/src/topology.c
@@ -593,7 +593,7 @@ static HSAKMT_STATUS topology_get_cpu_model_name(HsaNodeProperties *props,
 
 	fd = fopen(PROC_CPUINFO_PATH, "r");
 	if (!fd) {
-		printf("Failed to open [%s]. Unable to get CPU Model Name",
+		pr_err("Failed to open [%s]. Unable to get CPU Model Name",
 			PROC_CPUINFO_PATH);
 		return HSAKMT_STATUS_ERROR;
 	}
@@ -674,7 +674,7 @@ static void topology_set_processor_vendor(void)
 
 	fd = fopen(PROC_CPUINFO_PATH, "r");
 	if (!fd) {
-		printf("Failed to open [%s]. Setting Processor Vendor to %s",
+		pr_err("Failed to open [%s]. Setting Processor Vendor to %s",
 			PROC_CPUINFO_PATH, supported_processor_vendor_name[GENUINE_INTEL]);
 		processor_vendor = GENUINE_INTEL;
 		return;
@@ -694,7 +694,7 @@ static void topology_set_processor_vendor(void)
 		}
 	}
 	fclose(fd);
-	printf("Failed to get Processor Vendor. Setting to %s",
+	pr_err("Failed to get Processor Vendor. Setting to %s",
 		supported_processor_vendor_name[GENUINE_INTEL]);
 	processor_vendor = GENUINE_INTEL;
 }
@@ -814,8 +814,7 @@ HSAKMT_STATUS topology_sysfs_get_node_props(uint32_t node_id,
 			if ((sscanf(envvar, "%u.%u.%u%c",
 					&major, &minor, &step, &dummy) != 3) ||
 				(major > 63 || minor > 255 || step > 255)) {
-				fprintf(stderr,
-					"HSA_OVERRIDE_GFX_VERSION %s is invalid\n",
+				pr_err("HSA_OVERRIDE_GFX_VERSION %s is invalid\n",
 					envvar);
 				ret = HSAKMT_STATUS_ERROR;
 				goto err;
@@ -840,7 +839,7 @@ HSAKMT_STATUS topology_sysfs_get_node_props(uint32_t node_id,
 			/* Is APU node */
 			ret = topology_get_cpu_model_name(props, true);
 			if (ret != HSAKMT_STATUS_SUCCESS) {
-				printf("Failed to get APU Model Name from %s\n", PROC_CPUINFO_PATH);
+				pr_err("Failed to get APU Model Name from %s\n", PROC_CPUINFO_PATH);
 				ret = HSAKMT_STATUS_SUCCESS; /* No hard error, continue regardless */
 			}
 		} else {
@@ -859,7 +858,7 @@ HSAKMT_STATUS topology_sysfs_get_node_props(uint32_t node_id,
 		if (!props->NumFComputeCores || !props->DeviceId) {
 			ret = topology_get_cpu_model_name(props, false);
 			if (ret != HSAKMT_STATUS_SUCCESS) {
-				printf("Failed to get CPU Model Name from %s\n", PROC_CPUINFO_PATH);
+				pr_err("Failed to get CPU Model Name from %s\n", PROC_CPUINFO_PATH);
 				ret = HSAKMT_STATUS_SUCCESS; /* No hard error, continue regardless */
 			}
 		} else {
@@ -1005,7 +1004,7 @@ static HSAKMT_STATUS topology_create_temp_cpu_cache_list(void **temp_cpu_ci_list
 	 */
 	CPU_ZERO(&orig_cpuset);
 	if (sched_getaffinity(0, sizeof(cpu_set_t), &orig_cpuset) != 0) {
-		printf("Failed to get CPU affinity\n");
+		pr_err("Failed to get CPU affinity\n");
 		free(p_temp_cpu_ci_list);
 		ret = HSAKMT_STATUS_ERROR;
 		goto exit;
@@ -1272,19 +1271,18 @@ static HsaIoLinkProperties *topology_get_free_io_link_slot_for_node(uint32_t nod
 	HsaIoLinkProperties *props;
 
 	if (node_id >= sys_props->NumNodes) {
-		fprintf(stderr, "Invalid node [%d]\n", node_id);
+		pr_err("Invalid node [%d]\n", node_id);
 		return NULL;
 	}
 
 	props = nodes[node_id].link;
 	if (!props) {
-		fprintf(stderr, "No io_link reported for Node [%d]\n", node_id);
+		pr_err("No io_link reported for Node [%d]\n", node_id);
 		return NULL;
 	}
 
 	if (nodes[node_id].node.NumIOLinks >= sys_props->NumNodes - 1) {
-		fprintf(stderr, "No more space for io_link for Node [%d]\n",
-				node_id);
+		pr_err("No more space for io_link for Node [%d]\n", node_id);
 		return NULL;
 	}
 
@@ -1470,8 +1468,7 @@ static void topology_create_indirect_gpu_links(const HsaSystemProperties *sys_pr
 				continue;
 			if (topology_add_io_link_for_node(i, sys_props, nodes,
 				type, j, weight, true) != HSAKMT_STATUS_SUCCESS)
-				fprintf(stderr,
-					"Fail to add IO link %d->%d\n", i, j);
+				pr_err("Fail to add IO link %d->%d\n", i, j);
 		}
 	}
 }
@@ -1611,7 +1608,7 @@ HSAKMT_STATUS topology_drop_snapshot(void)
 	HSAKMT_STATUS err;
 
 	if (!!_system != !!node) {
-		printf("Probable inconsistency?\n");
+		pr_warn("Probably inconsistency?\n");
 		err = HSAKMT_STATUS_SUCCESS;
 		goto out;
 	}