From 9832fdc917de0f28772558688d7fa6c097c9c6cc Mon Sep 17 00:00:00 2001 From: Maksim Lukoshkov Date: Wed, 1 Sep 2021 18:36:07 +0100 Subject: crypto: qat - free irqs only if allocated Change the irq allocation logic so that it is possible to free only the allocated irqs in case of error. A new flag is introduced for every PF/VF interrupt. This flag is set to "true" only when the interrupt is requested. During clean up, devm_free_irq() is only called if this flag is set. Signed-off-by: Maksim Lukoshkov Co-developed-by: Wojciech Ziemba Signed-off-by: Wojciech Ziemba Reviewed-by: Giovanni Cabiddu Signed-off-by: Herbert Xu --- drivers/crypto/qat/qat_common/adf_accel_devices.h | 10 ++++- drivers/crypto/qat/qat_common/adf_isr.c | 50 ++++++++++------------- drivers/crypto/qat/qat_common/adf_vf_isr.c | 12 +++--- 3 files changed, 35 insertions(+), 37 deletions(-) (limited to 'drivers/crypto') diff --git a/drivers/crypto/qat/qat_common/adf_accel_devices.h b/drivers/crypto/qat/qat_common/adf_accel_devices.h index 87de40d6c9a5..e391ca0662bc 100644 --- a/drivers/crypto/qat/qat_common/adf_accel_devices.h +++ b/drivers/crypto/qat/qat_common/adf_accel_devices.h @@ -44,8 +44,13 @@ struct adf_bar { resource_size_t size; } __packed; +struct adf_irq { + bool enabled; + char name[ADF_MAX_MSIX_VECTOR_NAME]; +}; + struct adf_accel_msix { - char **names; + struct adf_irq *irqs; u32 num_entries; } __packed; @@ -250,7 +255,8 @@ struct adf_accel_dev { struct adf_accel_vf_info *vf_info; } pf; struct { - char *irq_name; + bool irq_enabled; + char irq_name[ADF_MAX_MSIX_VECTOR_NAME]; struct tasklet_struct pf2vf_bh_tasklet; struct mutex vf2pf_lock; /* protect CSR access */ struct completion iov_msg_completion; diff --git a/drivers/crypto/qat/qat_common/adf_isr.c b/drivers/crypto/qat/qat_common/adf_isr.c index 26b546d3f821..861a9368b9db 100644 --- a/drivers/crypto/qat/qat_common/adf_isr.c +++ b/drivers/crypto/qat/qat_common/adf_isr.c @@ -130,6 +130,7 @@ static int adf_request_irqs(struct adf_accel_dev *accel_dev) { struct adf_accel_pci *pci_dev_info = &accel_dev->accel_pci_dev; struct adf_hw_device_data *hw_data = accel_dev->hw_device; + struct adf_irq *irqs = pci_dev_info->msix_entries.irqs; struct adf_etr_data *etr_data = accel_dev->transport; int clust_irq = hw_data->num_banks; int ret, irq, i = 0; @@ -141,7 +142,7 @@ static int adf_request_irqs(struct adf_accel_dev *accel_dev) struct adf_etr_bank_data *bank = &etr_data->banks[i]; unsigned int cpu, cpus = num_online_cpus(); - name = *(pci_dev_info->msix_entries.names + i); + name = irqs[i].name; snprintf(name, ADF_MAX_MSIX_VECTOR_NAME, "qat%d-bundle%d", accel_dev->accel_id, i); irq = pci_irq_vector(pci_dev_info->pci_dev, i); @@ -163,11 +164,12 @@ static int adf_request_irqs(struct adf_accel_dev *accel_dev) cpu = ((accel_dev->accel_id * hw_data->num_banks) + i) % cpus; irq_set_affinity_hint(irq, get_cpu_mask(cpu)); + irqs[i].enabled = true; } } /* Request msix irq for AE */ - name = *(pci_dev_info->msix_entries.names + i); + name = irqs[i].name; snprintf(name, ADF_MAX_MSIX_VECTOR_NAME, "qat%d-ae-cluster", accel_dev->accel_id); irq = pci_irq_vector(pci_dev_info->pci_dev, clust_irq); @@ -183,6 +185,7 @@ static int adf_request_irqs(struct adf_accel_dev *accel_dev) "Failed to allocate IRQ %d for %s\n", irq, name); return ret; } + irqs[i].enabled = true; return ret; } @@ -190,60 +193,51 @@ static void adf_free_irqs(struct adf_accel_dev *accel_dev) { struct adf_accel_pci *pci_dev_info = &accel_dev->accel_pci_dev; struct adf_hw_device_data *hw_data = accel_dev->hw_device; + struct adf_irq *irqs = pci_dev_info->msix_entries.irqs; struct adf_etr_data *etr_data = accel_dev->transport; int clust_irq = hw_data->num_banks; int irq, i = 0; if (pci_dev_info->msix_entries.num_entries > 1) { for (i = 0; i < hw_data->num_banks; i++) { - irq = pci_irq_vector(pci_dev_info->pci_dev, i); - irq_set_affinity_hint(irq, NULL); - free_irq(irq, &etr_data->banks[i]); + if (irqs[i].enabled) { + irq = pci_irq_vector(pci_dev_info->pci_dev, i); + irq_set_affinity_hint(irq, NULL); + free_irq(irq, &etr_data->banks[i]); + } } } - irq = pci_irq_vector(pci_dev_info->pci_dev, clust_irq); - free_irq(irq, accel_dev); + if (irqs[i].enabled) { + irq = pci_irq_vector(pci_dev_info->pci_dev, clust_irq); + free_irq(irq, accel_dev); + } } static int adf_isr_alloc_msix_vectors_data(struct adf_accel_dev *accel_dev) { - int i; - char **names; struct adf_hw_device_data *hw_data = accel_dev->hw_device; u32 msix_num_entries = 1; + struct adf_irq *irqs; /* If SR-IOV is disabled (vf_info is NULL), add entries for each bank */ if (!accel_dev->pf.vf_info) msix_num_entries += hw_data->num_banks; - names = kcalloc(msix_num_entries, sizeof(char *), GFP_KERNEL); - if (!names) + irqs = kzalloc_node(msix_num_entries * sizeof(*irqs), + GFP_KERNEL, dev_to_node(&GET_DEV(accel_dev))); + if (!irqs) return -ENOMEM; - for (i = 0; i < msix_num_entries; i++) { - *(names + i) = kzalloc(ADF_MAX_MSIX_VECTOR_NAME, GFP_KERNEL); - if (!(*(names + i))) - goto err; - } accel_dev->accel_pci_dev.msix_entries.num_entries = msix_num_entries; - accel_dev->accel_pci_dev.msix_entries.names = names; + accel_dev->accel_pci_dev.msix_entries.irqs = irqs; return 0; -err: - for (i = 0; i < msix_num_entries; i++) - kfree(*(names + i)); - kfree(names); - return -ENOMEM; } static void adf_isr_free_msix_vectors_data(struct adf_accel_dev *accel_dev) { - char **names = accel_dev->accel_pci_dev.msix_entries.names; - int i; - - for (i = 0; i < accel_dev->accel_pci_dev.msix_entries.num_entries; i++) - kfree(*(names + i)); - kfree(names); + kfree(accel_dev->accel_pci_dev.msix_entries.irqs); + accel_dev->accel_pci_dev.msix_entries.irqs = NULL; } static int adf_setup_bh(struct adf_accel_dev *accel_dev) diff --git a/drivers/crypto/qat/qat_common/adf_vf_isr.c b/drivers/crypto/qat/qat_common/adf_vf_isr.c index 695c5050b6f3..07f81682c19b 100644 --- a/drivers/crypto/qat/qat_common/adf_vf_isr.c +++ b/drivers/crypto/qat/qat_common/adf_vf_isr.c @@ -61,10 +61,6 @@ static int adf_enable_msi(struct adf_accel_dev *accel_dev) return stat; } - accel_dev->vf.irq_name = kzalloc(ADF_MAX_MSIX_VECTOR_NAME, GFP_KERNEL); - if (!accel_dev->vf.irq_name) - return -ENOMEM; - return 0; } @@ -72,7 +68,6 @@ static void adf_disable_msi(struct adf_accel_dev *accel_dev) { struct pci_dev *pdev = accel_to_pci_dev(accel_dev); - kfree(accel_dev->vf.irq_name); pci_free_irq_vectors(pdev); } @@ -240,6 +235,7 @@ static int adf_request_msi_irq(struct adf_accel_dev *accel_dev) } cpu = accel_dev->accel_id % num_online_cpus(); irq_set_affinity_hint(pdev->irq, get_cpu_mask(cpu)); + accel_dev->vf.irq_enabled = true; return ret; } @@ -271,8 +267,10 @@ void adf_vf_isr_resource_free(struct adf_accel_dev *accel_dev) { struct pci_dev *pdev = accel_to_pci_dev(accel_dev); - irq_set_affinity_hint(pdev->irq, NULL); - free_irq(pdev->irq, (void *)accel_dev); + if (accel_dev->vf.irq_enabled) { + irq_set_affinity_hint(pdev->irq, NULL); + free_irq(pdev->irq, accel_dev); + } adf_cleanup_bh(accel_dev); adf_cleanup_pf2vf_bh(accel_dev); adf_disable_msi(accel_dev); -- cgit