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scsi: megaraid_sas: Pre-allocate frequently used DMA buffers

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Pre-allocate few of the frequently used DMA buffers during load time.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Shivasharan S
2017-10-19 02:48:56 -07:00
committed by Martin K. Petersen
parent 1b4bed2061
commit 9b3d028f34
4 changed files with 116 additions and 66 deletions
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19
drivers/scsi/megaraid/megaraid_sas_fusion.c
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@@ -776,6 +776,9 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
fusion = instance->ctrl_context;
ioc_init_handle = fusion->ioc_init_request_phys;
IOCInitMessage = fusion->ioc_init_request;
cmd = megasas_get_cmd(instance);
if (!cmd) {
@@ -801,18 +804,6 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
instance->fw_sync_cache_support ? "Yes" : "No");
IOCInitMessage =
dma_alloc_coherent(&instance->pdev->dev,
sizeof(struct MPI2_IOC_INIT_REQUEST),
&ioc_init_handle, GFP_KERNEL);
if (!IOCInitMessage) {
dev_err(&instance->pdev->dev, "Could not allocate memory for "
"IOCInitMessage\n");
ret = 1;
goto fail_fw_init;
}
memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
@@ -921,10 +912,6 @@ megasas_ioc_init_fusion(struct megasas_instance *instance)
fail_fw_init:
megasas_return_cmd(instance, cmd);
if (IOCInitMessage)
dma_free_coherent(&instance->pdev->dev,
sizeof(struct MPI2_IOC_INIT_REQUEST),
IOCInitMessage, ioc_init_handle);
fail_get_cmd:
dev_err(&instance->pdev->dev,
"Init cmd return status %s for SCSI host %d\n",