From: Svyatoslav Pankratov <svyatoslav.pankratov@xxxxxxxxx>
The PF driver uses the tasklet vf2pf_bh_tasklet to schedule a workqueue
to handle the vf2vf protocol (pf2vf_resp_wq).
Since the tasklet is only used to schedule the workqueue, this patch
removes it and schedules the pf2vf_resp_wq workqueue directly for the
top half.
Signed-off-by: Svyatoslav Pankratov <svyatoslav.pankratov@xxxxxxxxx>
Co-developed-by: Giovanni Cabiddu <giovanni.cabiddu@xxxxxxxxx>
Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@xxxxxxxxx>
Reviewed-by: Marco Chiappero <marco.chiappero@xxxxxxxxx>
---
drivers/crypto/qat/qat_common/adf_accel_devices.h | 1 -
drivers/crypto/qat/qat_common/adf_common_drv.h | 1 +
drivers/crypto/qat/qat_common/adf_isr.c | 8 +++-----
drivers/crypto/qat/qat_common/adf_sriov.c | 8 +-------
4 files changed, 5 insertions(+), 13 deletions(-)
diff --git a/drivers/crypto/qat/qat_common/adf_accel_devices.h b/drivers/crypto/qat/qat_common/adf_accel_devices.h
index 2ee11b4763cd..180c7dba3ff2 100644
--- a/drivers/crypto/qat/qat_common/adf_accel_devices.h
+++ b/drivers/crypto/qat/qat_common/adf_accel_devices.h
@@ -225,7 +225,6 @@ struct adf_fw_loader_data {
struct adf_accel_vf_info {
struct adf_accel_dev *accel_dev;
- struct tasklet_struct vf2pf_bh_tasklet;
struct mutex pf2vf_lock; /* protect CSR access for PF2VF messages */
struct ratelimit_state vf2pf_ratelimit;
u32 vf_nr;
diff --git a/drivers/crypto/qat/qat_common/adf_common_drv.h b/drivers/crypto/qat/qat_common/adf_common_drv.h
index 0150fce09600..62f25a307000 100644
--- a/drivers/crypto/qat/qat_common/adf_common_drv.h
+++ b/drivers/crypto/qat/qat_common/adf_common_drv.h
@@ -197,6 +197,7 @@ void adf_enable_vf2pf_interrupts(struct adf_accel_dev *accel_dev,
u32 vf_mask);
void adf_enable_pf2vf_interrupts(struct adf_accel_dev *accel_dev);
void adf_disable_pf2vf_interrupts(struct adf_accel_dev *accel_dev);
+void adf_schedule_vf2pf_handler(struct adf_accel_vf_info *vf_info);
int adf_vf2pf_init(struct adf_accel_dev *accel_dev);
void adf_vf2pf_shutdown(struct adf_accel_dev *accel_dev);
diff --git a/drivers/crypto/qat/qat_common/adf_isr.c b/drivers/crypto/qat/qat_common/adf_isr.c
index 403d2fc00a7d..fdd65771248b 100644
--- a/drivers/crypto/qat/qat_common/adf_isr.c
+++ b/drivers/crypto/qat/qat_common/adf_isr.c
@@ -108,9 +108,8 @@ static irqreturn_t adf_msix_isr_ae(int irq, void *dev_ptr)
adf_disable_vf2pf_interrupts(accel_dev, vf_mask);
/*
- * Schedule tasklets to handle VF2PF interrupt BHs
- * unless the VF is malicious and is attempting to
- * flood the host OS with VF2PF interrupts.
+ * Handle VF2PF interrupt unless the VF is malicious and
+ * is attempting to flood the host OS with VF2PF interrupts.
*/
for_each_set_bit(i, &vf_mask, ADF_MAX_NUM_VFS) {
vf_info = accel_dev->pf.vf_info + i;
@@ -122,8 +121,7 @@ static irqreturn_t adf_msix_isr_ae(int irq, void *dev_ptr)
continue;
}
- /* Tasklet will re-enable ints from this VF */
- tasklet_hi_schedule(&vf_info->vf2pf_bh_tasklet);
+ adf_schedule_vf2pf_handler(vf_info);
irq_handled = true;
}
diff --git a/drivers/crypto/qat/qat_common/adf_sriov.c b/drivers/crypto/qat/qat_common/adf_sriov.c
index 8c822c2861c2..90ec057f9183 100644
--- a/drivers/crypto/qat/qat_common/adf_sriov.c
+++ b/drivers/crypto/qat/qat_common/adf_sriov.c
@@ -24,9 +24,8 @@ static void adf_iov_send_resp(struct work_struct *work)
kfree(pf2vf_resp);
}
-static void adf_vf2pf_bh_handler(void *data)
+void adf_schedule_vf2pf_handler(struct adf_accel_vf_info *vf_info)
{
- struct adf_accel_vf_info *vf_info = (struct adf_accel_vf_info *)data;
struct adf_pf2vf_resp *pf2vf_resp;
pf2vf_resp = kzalloc(sizeof(*pf2vf_resp), GFP_ATOMIC);
@@ -52,9 +51,6 @@ static int adf_enable_sriov(struct adf_accel_dev *accel_dev)
vf_info->accel_dev = accel_dev;
vf_info->vf_nr = i;
- tasklet_init(&vf_info->vf2pf_bh_tasklet,
- (void *)adf_vf2pf_bh_handler,
- (unsigned long)vf_info);
mutex_init(&vf_info->pf2vf_lock);
ratelimit_state_init(&vf_info->vf2pf_ratelimit,
DEFAULT_RATELIMIT_INTERVAL,
@@ -110,8 +106,6 @@ void adf_disable_sriov(struct adf_accel_dev *accel_dev)
hw_data->configure_iov_threads(accel_dev, false);
for (i = 0, vf = accel_dev->pf.vf_info; i < totalvfs; i++, vf++) {
- tasklet_disable(&vf->vf2pf_bh_tasklet);
- tasklet_kill(&vf->vf2pf_bh_tasklet);
mutex_destroy(&vf->pf2vf_lock);
}
--
2.26.2
