From b05fdcf79d18f6a29e00ae9ec18e6067d952aaab Mon Sep 17 00:00:00 2001 From: Luo Jiaxing Date: Fri, 6 Sep 2019 20:55:35 +0800 Subject: [PATCH 021/108] scsi: hisi_sas: Add hisi_sas_debugfs_alloc() to centralise allocation mainline inclusion from mainline-v5.4-rc1 commit 7ec7082c57ecdd8d37040d31203951f7e2e8e218 category: feature bugzilla: https://gitee.com/src-openeuler/kernel/issues/I8F808 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7ec7082c57ecdd8d37040d31203951f7e2e8e218 ---------------------------------------------------------------------- We extract the code of memory allocate and construct an new function for it. We think it's convenient for subsequent optimization. Link: https://lore.kernel.org/r/1567774537-20003-12-git-send-email-john.garry@huawei.com Signed-off-by: Luo Jiaxing Signed-off-by: John Garry Signed-off-by: Martin K. Petersen Signed-off-by: YunYi Yang Conflicts: drivers/scsi/hisi_sas/hisi_sas_main.c --- drivers/scsi/hisi_sas/hisi_sas_main.c | 117 +++++++++++++++----------- 1 file changed, 66 insertions(+), 51 deletions(-) diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index 7df98ca85e86..6e49a91aa492 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -3783,60 +3783,77 @@ void hisi_sas_debugfs_work_handler(struct work_struct *work) } EXPORT_SYMBOL_GPL(hisi_sas_debugfs_work_handler); -void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba) +void hisi_sas_debugfs_release(struct hisi_hba *hisi_hba) +{ + struct device *dev = hisi_hba->dev; + int i; + + devm_kfree(dev, hisi_hba->debugfs_iost_cache); + devm_kfree(dev, hisi_hba->debugfs_itct_cache); + devm_kfree(dev, hisi_hba->debugfs_iost); + + for (i = 0; i < hisi_hba->queue_count; i++) + devm_kfree(dev, hisi_hba->debugfs_cmd_hdr[i]); + + for (i = 0; i < hisi_hba->queue_count; i++) + devm_kfree(dev, hisi_hba->debugfs_complete_hdr[i]); + + for (i = 0; i < DEBUGFS_REGS_NUM; i++) + devm_kfree(dev, hisi_hba->debugfs_regs[i]); + + for (i = 0; i < hisi_hba->n_phy; i++) + devm_kfree(dev, hisi_hba->debugfs_port_reg[i]); +} + +int hisi_sas_debugfs_alloc(struct hisi_hba *hisi_hba) { - int max_command_entries = HISI_SAS_MAX_COMMANDS; const struct hisi_sas_hw *hw = hisi_hba->hw; struct device *dev = hisi_hba->dev; - int p, i, c, d; + int p, c, d; size_t sz; - hisi_hba->debugfs_dir = debugfs_create_dir(dev_name(dev), - hisi_sas_debugfs_dir); + hisi_hba->debugfs_dump_dentry = + debugfs_create_dir("dump", hisi_hba->debugfs_dir); - debugfs_create_file("trigger_dump", 0600, - hisi_hba->debugfs_dir, - hisi_hba, - &hisi_sas_debugfs_trigger_dump_fops); /* create bist structures */ hisi_hba->debugfs_bist_dentry = debugfs_create_dir("bist", hisi_hba->debugfs_dir); if (!hisi_hba->debugfs_bist_dentry) - goto fail_global; + goto fail; if (!debugfs_create_file("link_rate", 0644, hisi_hba->debugfs_bist_dentry, hisi_hba, &hisi_sas_debugfs_bist_linkrate_ops)) - goto fail_global; + goto fail; if (!debugfs_create_file("code_mode", 0644, hisi_hba->debugfs_bist_dentry, hisi_hba, &hisi_sas_debugfs_bist_code_mode_ops)) - goto fail_global; + goto fail; if (!debugfs_create_file("phy_id", 0644, hisi_hba->debugfs_bist_dentry, hisi_hba, &hisi_sas_debugfs_bist_phy_ops)) - goto fail_global; + goto fail; if (!debugfs_create_u32("cnt", 0644, hisi_hba->debugfs_bist_dentry, &hisi_hba->bist_loopback_cnt)) - goto fail_global; + goto fail; if (!debugfs_create_file("loopback_mode", 0400, hisi_hba->debugfs_bist_dentry, hisi_hba, &hisi_sas_debugfs_bist_mode_ops)) - goto fail_global; + goto fail; if (!debugfs_create_file("enable", 0644, hisi_hba->debugfs_bist_dentry, hisi_hba, &hisi_sas_debugfs_bist_enable_ops)) - goto fail_global; + goto fail; sz = hw->debugfs_reg_array[DEBUGFS_GLOBAL]->count * 4; hisi_hba->debugfs_regs[DEBUGFS_GLOBAL] = devm_kmalloc(dev, sz, GFP_KERNEL); if (!hisi_hba->debugfs_regs[DEBUGFS_GLOBAL]) - goto fail_global; + goto fail; sz = hw->debugfs_reg_port->count * 4; for (p = 0; p < hisi_hba->n_phy; p++) { @@ -3844,7 +3861,7 @@ void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba) devm_kmalloc(dev, sz, GFP_KERNEL); if (!hisi_hba->debugfs_port_reg[p]) - goto fail_port; + goto fail; } sz = hw->debugfs_reg_array[DEBUGFS_AXI]->count * 4; @@ -3852,14 +3869,14 @@ void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba) devm_kmalloc(dev, sz, GFP_KERNEL); if (!hisi_hba->debugfs_regs[DEBUGFS_AXI]) - goto fail_axi; + goto fail; sz = hw->debugfs_reg_array[DEBUGFS_RAS]->count * 4; hisi_hba->debugfs_regs[DEBUGFS_RAS] = devm_kmalloc(dev, sz, GFP_KERNEL); if (!hisi_hba->debugfs_regs[DEBUGFS_RAS]) - goto fail_ras; + goto fail; sz = hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; for (c = 0; c < hisi_hba->queue_count; c++) { @@ -3867,7 +3884,7 @@ void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba) devm_kmalloc(dev, sz, GFP_KERNEL); if (!hisi_hba->debugfs_complete_hdr[c]) - goto fail_cq; + goto fail; } sz = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; @@ -3876,60 +3893,58 @@ void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba) devm_kmalloc(dev, sz, GFP_KERNEL); if (!hisi_hba->debugfs_cmd_hdr[d]) - goto fail_iost_dq; + goto fail; } - sz = max_command_entries * sizeof(struct hisi_sas_iost); + sz = HISI_SAS_MAX_COMMANDS * sizeof(struct hisi_sas_iost); hisi_hba->debugfs_iost = devm_kmalloc(dev, sz, GFP_KERNEL); if (!hisi_hba->debugfs_iost) - goto fail_iost_dq; + goto fail; sz = HISI_SAS_IOST_ITCT_CACHE_NUM * sizeof(struct hisi_sas_iost_itct_cache); hisi_hba->debugfs_iost_cache = devm_kmalloc(dev, sz, GFP_KERNEL); if (!hisi_hba->debugfs_iost_cache) - goto fail_iost_cache; + goto fail; sz = HISI_SAS_IOST_ITCT_CACHE_NUM * sizeof(struct hisi_sas_iost_itct_cache); hisi_hba->debugfs_itct_cache = devm_kmalloc(dev, sz, GFP_KERNEL); if (!hisi_hba->debugfs_itct_cache) - goto fail_itct_cache; + goto fail; /* New memory allocation must be locate before itct */ sz = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); hisi_hba->debugfs_itct = devm_kmalloc(dev, sz, GFP_KERNEL); if (!hisi_hba->debugfs_itct) - goto fail_itct; + goto fail; + + return 0; +fail: + hisi_sas_debugfs_release(hisi_hba); + return -ENOMEM; +} + +void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba) +{ + struct device *dev = hisi_hba->dev; + + hisi_hba->debugfs_dir = debugfs_create_dir(dev_name(dev), + hisi_sas_debugfs_dir); + debugfs_create_file("trigger_dump", 0600, + hisi_hba->debugfs_dir, + hisi_hba, + &hisi_sas_debugfs_trigger_dump_fops); + + if (hisi_sas_debugfs_alloc(hisi_hba)) { + debugfs_remove_recursive(hisi_hba->debugfs_dir); + dev_dbg(dev, "failed to init debugfs!\n"); + } - return; -fail_itct: - devm_kfree(dev, hisi_hba->debugfs_iost_cache); -fail_itct_cache: - devm_kfree(dev, hisi_hba->debugfs_iost_cache); -fail_iost_cache: - devm_kfree(dev, hisi_hba->debugfs_iost); -fail_iost_dq: - for (i = 0; i < d; i++) - devm_kfree(dev, hisi_hba->debugfs_cmd_hdr[i]); -fail_cq: - for (i = 0; i < c; i++) - devm_kfree(dev, hisi_hba->debugfs_complete_hdr[i]); - devm_kfree(dev, hisi_hba->debugfs_regs[DEBUGFS_RAS]); -fail_ras: - devm_kfree(dev, hisi_hba->debugfs_regs[DEBUGFS_AXI]); -fail_axi: -fail_port: - for (i = 0; i < p; i++) - devm_kfree(dev, hisi_hba->debugfs_port_reg[i]); - devm_kfree(dev, hisi_hba->debugfs_regs[DEBUGFS_GLOBAL]); -fail_global: - hisi_sas_debugfs_exit(hisi_hba); - dev_info(dev, "failed to init debugfs!\n"); } EXPORT_SYMBOL_GPL(hisi_sas_debugfs_init); -- 2.27.0