From def3e8dfe935f293da47c2684bc9fd2a927b7cc5 Mon Sep 17 00:00:00 2001 From: Shivasharan S Date: Wed, 23 Aug 2017 04:47:03 -0700 Subject: [PATCH] scsi: megaraid_sas: use vmalloc for crash dump buffers and driver's local RAID map Driver's local RAID map is accessed frequently. We will first try to get memory from __get_free_pages. If this fails, fall back to using vmalloc. For crash dump buffers always prefer vmalloc. Signed-off-by: Kashyap Desai Signed-off-by: Shivasharan S Reviewed-by: Hannes Reinecke Reviewed-by: Tomas Henzl Signed-off-by: Martin K. Petersen --- drivers/scsi/megaraid/megaraid_sas.h | 1 - drivers/scsi/megaraid/megaraid_sas_base.c | 12 +- drivers/scsi/megaraid/megaraid_sas_fusion.c | 121 +++++++++++++------- 3 files changed, 88 insertions(+), 46 deletions(-) diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h index 2b209bbb4c91..6d9f1110e16a 100644 --- a/drivers/scsi/megaraid/megaraid_sas.h +++ b/drivers/scsi/megaraid/megaraid_sas.h @@ -2115,7 +2115,6 @@ struct megasas_instance { u32 *crash_dump_buf; dma_addr_t crash_dump_h; void *crash_buf[MAX_CRASH_DUMP_SIZE]; - u32 crash_buf_pages; unsigned int fw_crash_buffer_size; unsigned int fw_crash_state; unsigned int fw_crash_buffer_offset; diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index df2332f3e182..6b715bb90511 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -49,6 +49,7 @@ #include #include #include +#include #include #include @@ -6671,9 +6672,14 @@ static void megasas_detach_one(struct pci_dev *pdev) fusion->max_map_sz, fusion->ld_map[i], fusion->ld_map_phys[i]); - if (fusion->ld_drv_map[i]) - free_pages((ulong)fusion->ld_drv_map[i], - fusion->drv_map_pages); + if (fusion->ld_drv_map[i]) { + if (is_vmalloc_addr(fusion->ld_drv_map[i])) + vfree(fusion->ld_drv_map[i]); + else + free_pages((ulong)fusion->ld_drv_map[i], + fusion->drv_map_pages); + } + if (fusion->pd_seq_sync[i]) dma_free_coherent(&instance->pdev->dev, pd_seq_map_sz, diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index 6da1663ddb54..bd89962b8a98 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -1262,6 +1262,80 @@ megasas_display_intel_branding(struct megasas_instance *instance) } } +/** + * megasas_allocate_raid_maps - Allocate memory for RAID maps + * @instance: Adapter soft state + * + * return: if success: return 0 + * failed: return -ENOMEM + */ +static inline int megasas_allocate_raid_maps(struct megasas_instance *instance) +{ + struct fusion_context *fusion; + int i = 0; + + fusion = instance->ctrl_context; + + fusion->drv_map_pages = get_order(fusion->drv_map_sz); + + for (i = 0; i < 2; i++) { + fusion->ld_map[i] = NULL; + + fusion->ld_drv_map[i] = (void *) + __get_free_pages(__GFP_ZERO | GFP_KERNEL, + fusion->drv_map_pages); + + if (!fusion->ld_drv_map[i]) { + fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz); + + if (!fusion->ld_drv_map[i]) { + dev_err(&instance->pdev->dev, + "Could not allocate memory for local map" + " size requested: %d\n", + fusion->drv_map_sz); + goto ld_drv_map_alloc_fail; + } + } + } + + for (i = 0; i < 2; i++) { + fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, + fusion->max_map_sz, + &fusion->ld_map_phys[i], + GFP_KERNEL); + if (!fusion->ld_map[i]) { + dev_err(&instance->pdev->dev, + "Could not allocate memory for map info %s:%d\n", + __func__, __LINE__); + goto ld_map_alloc_fail; + } + } + + return 0; + +ld_map_alloc_fail: + for (i = 0; i < 2; i++) { + if (fusion->ld_map[i]) + dma_free_coherent(&instance->pdev->dev, + fusion->max_map_sz, + fusion->ld_map[i], + fusion->ld_map_phys[i]); + } + +ld_drv_map_alloc_fail: + for (i = 0; i < 2; i++) { + if (fusion->ld_drv_map[i]) { + if (is_vmalloc_addr(fusion->ld_drv_map[i])) + vfree(fusion->ld_drv_map[i]); + else + free_pages((ulong)fusion->ld_drv_map[i], + fusion->drv_map_pages); + } + } + + return -ENOMEM; +} + /** * megasas_init_adapter_fusion - Initializes the FW * @instance: Adapter soft state @@ -1381,45 +1455,14 @@ megasas_init_adapter_fusion(struct megasas_instance *instance) instance->r1_ldio_hint_default = MR_R1_LDIO_PIGGYBACK_DEFAULT; fusion->fast_path_io = 0; - fusion->drv_map_pages = get_order(fusion->drv_map_sz); - for (i = 0; i < 2; i++) { - fusion->ld_map[i] = NULL; - fusion->ld_drv_map[i] = (void *)__get_free_pages(GFP_KERNEL, - fusion->drv_map_pages); - if (!fusion->ld_drv_map[i]) { - dev_err(&instance->pdev->dev, "Could not allocate " - "memory for local map info for %d pages\n", - fusion->drv_map_pages); - if (i == 1) - free_pages((ulong)fusion->ld_drv_map[0], - fusion->drv_map_pages); - goto fail_ioc_init; - } - memset(fusion->ld_drv_map[i], 0, - ((1 << PAGE_SHIFT) << fusion->drv_map_pages)); - } - - for (i = 0; i < 2; i++) { - fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, - fusion->max_map_sz, - &fusion->ld_map_phys[i], - GFP_KERNEL); - if (!fusion->ld_map[i]) { - dev_err(&instance->pdev->dev, "Could not allocate memory " - "for map info\n"); - goto fail_map_info; - } - } + if (megasas_allocate_raid_maps(instance)) + goto fail_ioc_init; if (!megasas_get_map_info(instance)) megasas_sync_map_info(instance); return 0; -fail_map_info: - if (i == 1) - dma_free_coherent(&instance->pdev->dev, fusion->max_map_sz, - fusion->ld_map[0], fusion->ld_map_phys[0]); fail_ioc_init: megasas_free_cmds_fusion(instance); fail_alloc_cmds: @@ -3371,17 +3414,13 @@ megasas_alloc_host_crash_buffer(struct megasas_instance *instance) { unsigned int i; - instance->crash_buf_pages = get_order(CRASH_DMA_BUF_SIZE); for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) { - instance->crash_buf[i] = (void *)__get_free_pages(GFP_KERNEL, - instance->crash_buf_pages); + instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE); if (!instance->crash_buf[i]) { dev_info(&instance->pdev->dev, "Firmware crash dump " "memory allocation failed at index %d\n", i); break; } - memset(instance->crash_buf[i], 0, - ((1 << PAGE_SHIFT) << instance->crash_buf_pages)); } instance->drv_buf_alloc = i; } @@ -3393,12 +3432,10 @@ megasas_alloc_host_crash_buffer(struct megasas_instance *instance) void megasas_free_host_crash_buffer(struct megasas_instance *instance) { - unsigned int i -; + unsigned int i; for (i = 0; i < instance->drv_buf_alloc; i++) { if (instance->crash_buf[i]) - free_pages((ulong)instance->crash_buf[i], - instance->crash_buf_pages); + vfree(instance->crash_buf[i]); } instance->drv_buf_index = 0; instance->drv_buf_alloc = 0; -- GitLab