Re: [Openipmi-developer] [PATCH 3/9] IB: Convert from tasklet to BH workqueue
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Re: [Openipmi-developer] [PATCH 3/9] IB: Convert from tasklet to BH workqueue
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From: Zhu Y. <yan...@li...> - 2024-04-07 19:12:58
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在 2024/3/27 17:03, Allen Pais 写道: > The only generic interface to execute asynchronously in the BH context is > tasklet; however, it's marked deprecated and has some design flaws. To > replace tasklets, BH workqueue support was recently added. A BH workqueue > behaves similarly to regular workqueues except that the queued work items > are executed in the BH context. > > This patch converts drivers/infiniband/* from tasklet to BH workqueue. > > Based on the work done by Tejun Heo <tj...@ke...> > Branch: https://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git for-6.10 I made simple tests. And I can not find the difference on latency and throughput on RoCEv2 devices. Anyone also made tests with these patches on IB? Any difference on Latency and throughput? Thanks, Zhu Yanjun > > Signed-off-by: Allen Pais <all...@gm...> > --- > drivers/infiniband/hw/bnxt_re/bnxt_re.h | 3 +- > drivers/infiniband/hw/bnxt_re/qplib_fp.c | 21 ++++++------ > drivers/infiniband/hw/bnxt_re/qplib_fp.h | 2 +- > drivers/infiniband/hw/bnxt_re/qplib_rcfw.c | 25 ++++++++------- > drivers/infiniband/hw/bnxt_re/qplib_rcfw.h | 2 +- > drivers/infiniband/hw/erdma/erdma.h | 3 +- > drivers/infiniband/hw/erdma/erdma_eq.c | 11 ++++--- > drivers/infiniband/hw/hfi1/rc.c | 2 +- > drivers/infiniband/hw/hfi1/sdma.c | 37 +++++++++++----------- > drivers/infiniband/hw/hfi1/sdma.h | 9 +++--- > drivers/infiniband/hw/hfi1/tid_rdma.c | 6 ++-- > drivers/infiniband/hw/irdma/ctrl.c | 2 +- > drivers/infiniband/hw/irdma/hw.c | 24 +++++++------- > drivers/infiniband/hw/irdma/main.h | 5 +-- > drivers/infiniband/hw/qib/qib.h | 7 ++-- > drivers/infiniband/hw/qib/qib_iba7322.c | 9 +++--- > drivers/infiniband/hw/qib/qib_rc.c | 16 +++++----- > drivers/infiniband/hw/qib/qib_ruc.c | 4 +-- > drivers/infiniband/hw/qib/qib_sdma.c | 11 ++++--- > drivers/infiniband/sw/rdmavt/qp.c | 2 +- > 20 files changed, 106 insertions(+), 95 deletions(-) > > diff --git a/drivers/infiniband/hw/bnxt_re/bnxt_re.h b/drivers/infiniband/hw/bnxt_re/bnxt_re.h > index 9dca451ed522..f511c8415806 100644 > --- a/drivers/infiniband/hw/bnxt_re/bnxt_re.h > +++ b/drivers/infiniband/hw/bnxt_re/bnxt_re.h > @@ -42,6 +42,7 @@ > #include <rdma/uverbs_ioctl.h> > #include "hw_counters.h" > #include <linux/hashtable.h> > +#include <linux/workqueue.h> > #define ROCE_DRV_MODULE_NAME "bnxt_re" > > #define BNXT_RE_DESC "Broadcom NetXtreme-C/E RoCE Driver" > @@ -162,7 +163,7 @@ struct bnxt_re_dev { > u8 cur_prio_map; > > /* FP Notification Queue (CQ & SRQ) */ > - struct tasklet_struct nq_task; > + struct work_struct nq_work; > > /* RCFW Channel */ > struct bnxt_qplib_rcfw rcfw; > diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.c b/drivers/infiniband/hw/bnxt_re/qplib_fp.c > index 439d0c7c5d0c..052906982cdf 100644 > --- a/drivers/infiniband/hw/bnxt_re/qplib_fp.c > +++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.c > @@ -46,6 +46,7 @@ > #include <linux/delay.h> > #include <linux/prefetch.h> > #include <linux/if_ether.h> > +#include <linux/workqueue.h> > #include <rdma/ib_mad.h> > > #include "roce_hsi.h" > @@ -294,9 +295,9 @@ static void __wait_for_all_nqes(struct bnxt_qplib_cq *cq, u16 cnq_events) > } > } > > -static void bnxt_qplib_service_nq(struct tasklet_struct *t) > +static void bnxt_qplib_service_nq(struct work_struct *t) > { > - struct bnxt_qplib_nq *nq = from_tasklet(nq, t, nq_tasklet); > + struct bnxt_qplib_nq *nq = from_work(nq, t, nq_work); > struct bnxt_qplib_hwq *hwq = &nq->hwq; > struct bnxt_qplib_cq *cq; > int budget = nq->budget; > @@ -394,7 +395,7 @@ void bnxt_re_synchronize_nq(struct bnxt_qplib_nq *nq) > int budget = nq->budget; > > nq->budget = nq->hwq.max_elements; > - bnxt_qplib_service_nq(&nq->nq_tasklet); > + bnxt_qplib_service_nq(&nq->nq_work); > nq->budget = budget; > } > > @@ -409,7 +410,7 @@ static irqreturn_t bnxt_qplib_nq_irq(int irq, void *dev_instance) > prefetch(bnxt_qplib_get_qe(hwq, sw_cons, NULL)); > > /* Fan out to CPU affinitized kthreads? */ > - tasklet_schedule(&nq->nq_tasklet); > + queue_work(system_bh_wq, &nq->nq_work); > > return IRQ_HANDLED; > } > @@ -430,8 +431,8 @@ void bnxt_qplib_nq_stop_irq(struct bnxt_qplib_nq *nq, bool kill) > nq->name = NULL; > > if (kill) > - tasklet_kill(&nq->nq_tasklet); > - tasklet_disable(&nq->nq_tasklet); > + cancel_work_sync(&nq->nq_work); > + disable_work_sync(&nq->nq_work); > } > > void bnxt_qplib_disable_nq(struct bnxt_qplib_nq *nq) > @@ -465,9 +466,9 @@ int bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq *nq, int nq_indx, > > nq->msix_vec = msix_vector; > if (need_init) > - tasklet_setup(&nq->nq_tasklet, bnxt_qplib_service_nq); > + INIT_WORK(&nq->nq_work, bnxt_qplib_service_nq); > else > - tasklet_enable(&nq->nq_tasklet); > + enable_and_queue_work(system_bh_wq, &nq->nq_work); > > nq->name = kasprintf(GFP_KERNEL, "bnxt_re-nq-%d@pci:%s", > nq_indx, pci_name(res->pdev)); > @@ -477,7 +478,7 @@ int bnxt_qplib_nq_start_irq(struct bnxt_qplib_nq *nq, int nq_indx, > if (rc) { > kfree(nq->name); > nq->name = NULL; > - tasklet_disable(&nq->nq_tasklet); > + disable_work_sync(&nq->nq_work); > return rc; > } > > @@ -541,7 +542,7 @@ int bnxt_qplib_enable_nq(struct pci_dev *pdev, struct bnxt_qplib_nq *nq, > nq->cqn_handler = cqn_handler; > nq->srqn_handler = srqn_handler; > > - /* Have a task to schedule CQ notifiers in post send case */ > + /* Have a work to schedule CQ notifiers in post send case */ > nq->cqn_wq = create_singlethread_workqueue("bnxt_qplib_nq"); > if (!nq->cqn_wq) > return -ENOMEM; > diff --git a/drivers/infiniband/hw/bnxt_re/qplib_fp.h b/drivers/infiniband/hw/bnxt_re/qplib_fp.h > index 7fd4506b3584..6ee3e501d136 100644 > --- a/drivers/infiniband/hw/bnxt_re/qplib_fp.h > +++ b/drivers/infiniband/hw/bnxt_re/qplib_fp.h > @@ -494,7 +494,7 @@ struct bnxt_qplib_nq { > u16 ring_id; > int msix_vec; > cpumask_t mask; > - struct tasklet_struct nq_tasklet; > + struct work_struct nq_work; > bool requested; > int budget; > > diff --git a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c > index 3ffaef0c2651..2fba712d88db 100644 > --- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c > +++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.c > @@ -43,6 +43,7 @@ > #include <linux/pci.h> > #include <linux/prefetch.h> > #include <linux/delay.h> > +#include <linux/workqueue.h> > > #include "roce_hsi.h" > #include "qplib_res.h" > @@ -51,7 +52,7 @@ > #include "qplib_fp.h" > #include "qplib_tlv.h" > > -static void bnxt_qplib_service_creq(struct tasklet_struct *t); > +static void bnxt_qplib_service_creq(struct work_struct *t); > > /** > * bnxt_qplib_map_rc - map return type based on opcode > @@ -165,7 +166,7 @@ static int __wait_for_resp(struct bnxt_qplib_rcfw *rcfw, u16 cookie) > if (!crsqe->is_in_used) > return 0; > > - bnxt_qplib_service_creq(&rcfw->creq.creq_tasklet); > + bnxt_qplib_service_creq(&rcfw->creq.creq_work); > > if (!crsqe->is_in_used) > return 0; > @@ -206,7 +207,7 @@ static int __block_for_resp(struct bnxt_qplib_rcfw *rcfw, u16 cookie) > > udelay(1); > > - bnxt_qplib_service_creq(&rcfw->creq.creq_tasklet); > + bnxt_qplib_service_creq(&rcfw->creq.creq_work); > if (!crsqe->is_in_used) > return 0; > > @@ -403,7 +404,7 @@ static int __poll_for_resp(struct bnxt_qplib_rcfw *rcfw, u16 cookie) > > usleep_range(1000, 1001); > > - bnxt_qplib_service_creq(&rcfw->creq.creq_tasklet); > + bnxt_qplib_service_creq(&rcfw->creq.creq_work); > if (!crsqe->is_in_used) > return 0; > if (jiffies_to_msecs(jiffies - issue_time) > > @@ -727,9 +728,9 @@ static int bnxt_qplib_process_qp_event(struct bnxt_qplib_rcfw *rcfw, > } > > /* SP - CREQ Completion handlers */ > -static void bnxt_qplib_service_creq(struct tasklet_struct *t) > +static void bnxt_qplib_service_creq(struct work_struct *t) > { > - struct bnxt_qplib_rcfw *rcfw = from_tasklet(rcfw, t, creq.creq_tasklet); > + struct bnxt_qplib_rcfw *rcfw = from_work(rcfw, t, creq.creq_work); > struct bnxt_qplib_creq_ctx *creq = &rcfw->creq; > u32 type, budget = CREQ_ENTRY_POLL_BUDGET; > struct bnxt_qplib_hwq *hwq = &creq->hwq; > @@ -800,7 +801,7 @@ static irqreturn_t bnxt_qplib_creq_irq(int irq, void *dev_instance) > sw_cons = HWQ_CMP(hwq->cons, hwq); > prefetch(bnxt_qplib_get_qe(hwq, sw_cons, NULL)); > > - tasklet_schedule(&creq->creq_tasklet); > + queue_work(system_bh_wq, &creq->creq_work); > > return IRQ_HANDLED; > } > @@ -1007,8 +1008,8 @@ void bnxt_qplib_rcfw_stop_irq(struct bnxt_qplib_rcfw *rcfw, bool kill) > creq->irq_name = NULL; > atomic_set(&rcfw->rcfw_intr_enabled, 0); > if (kill) > - tasklet_kill(&creq->creq_tasklet); > - tasklet_disable(&creq->creq_tasklet); > + cancel_work_sync(&creq->creq_work); > + disable_work_sync(&creq->creq_work); > } > > void bnxt_qplib_disable_rcfw_channel(struct bnxt_qplib_rcfw *rcfw) > @@ -1045,9 +1046,9 @@ int bnxt_qplib_rcfw_start_irq(struct bnxt_qplib_rcfw *rcfw, int msix_vector, > > creq->msix_vec = msix_vector; > if (need_init) > - tasklet_setup(&creq->creq_tasklet, bnxt_qplib_service_creq); > + INIT_WORK(&creq->creq_work, bnxt_qplib_service_creq); > else > - tasklet_enable(&creq->creq_tasklet); > + enable_and_queue_work(system_bh_wq, &creq->creq_work); > > creq->irq_name = kasprintf(GFP_KERNEL, "bnxt_re-creq@pci:%s", > pci_name(res->pdev)); > @@ -1058,7 +1059,7 @@ int bnxt_qplib_rcfw_start_irq(struct bnxt_qplib_rcfw *rcfw, int msix_vector, > if (rc) { > kfree(creq->irq_name); > creq->irq_name = NULL; > - tasklet_disable(&creq->creq_tasklet); > + disable_work_sync(&creq->creq_work); > return rc; > } > creq->requested = true; > diff --git a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h > index 45996e60a0d0..8efa474fcf3f 100644 > --- a/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h > +++ b/drivers/infiniband/hw/bnxt_re/qplib_rcfw.h > @@ -207,7 +207,7 @@ struct bnxt_qplib_creq_ctx { > struct bnxt_qplib_hwq hwq; > struct bnxt_qplib_creq_db creq_db; > struct bnxt_qplib_creq_stat stats; > - struct tasklet_struct creq_tasklet; > + struct work_struct creq_work; > aeq_handler_t aeq_handler; > u16 ring_id; > int msix_vec; > diff --git a/drivers/infiniband/hw/erdma/erdma.h b/drivers/infiniband/hw/erdma/erdma.h > index 5df401a30cb9..9a47c1432c27 100644 > --- a/drivers/infiniband/hw/erdma/erdma.h > +++ b/drivers/infiniband/hw/erdma/erdma.h > @@ -11,6 +11,7 @@ > #include <linux/netdevice.h> > #include <linux/pci.h> > #include <linux/xarray.h> > +#include <linux/workqueue.h> > #include <rdma/ib_verbs.h> > > #include "erdma_hw.h" > @@ -161,7 +162,7 @@ struct erdma_eq_cb { > void *dev; /* All EQs use this fields to get erdma_dev struct */ > struct erdma_irq irq; > struct erdma_eq eq; > - struct tasklet_struct tasklet; > + struct work_struct work; > }; > > struct erdma_resource_cb { > diff --git a/drivers/infiniband/hw/erdma/erdma_eq.c b/drivers/infiniband/hw/erdma/erdma_eq.c > index ea47cb21fdb8..252906fd73b0 100644 > --- a/drivers/infiniband/hw/erdma/erdma_eq.c > +++ b/drivers/infiniband/hw/erdma/erdma_eq.c > @@ -160,14 +160,16 @@ static irqreturn_t erdma_intr_ceq_handler(int irq, void *data) > { > struct erdma_eq_cb *ceq_cb = data; > > - tasklet_schedule(&ceq_cb->tasklet); > + queue_work(system_bh_wq, &ceq_cb->work); > > return IRQ_HANDLED; > } > > -static void erdma_intr_ceq_task(unsigned long data) > +static void erdma_intr_ceq_task(struct work_struct *t) > { > - erdma_ceq_completion_handler((struct erdma_eq_cb *)data); > + struct erdma_eq_cb *ceq_cb = from_work(ceq_cb, t, work); > + > + erdma_ceq_completion_handler(ceq_cb); > } > > static int erdma_set_ceq_irq(struct erdma_dev *dev, u16 ceqn) > @@ -179,8 +181,7 @@ static int erdma_set_ceq_irq(struct erdma_dev *dev, u16 ceqn) > pci_name(dev->pdev)); > eqc->irq.msix_vector = pci_irq_vector(dev->pdev, ceqn + 1); > > - tasklet_init(&dev->ceqs[ceqn].tasklet, erdma_intr_ceq_task, > - (unsigned long)&dev->ceqs[ceqn]); > + INIT_WORK(&dev->ceqs[ceqn].work, erdma_intr_ceq_task); > > cpumask_set_cpu(cpumask_local_spread(ceqn + 1, dev->attrs.numa_node), > &eqc->irq.affinity_hint_mask); > diff --git a/drivers/infiniband/hw/hfi1/rc.c b/drivers/infiniband/hw/hfi1/rc.c > index b36242c9d42c..ec19ddbfdacb 100644 > --- a/drivers/infiniband/hw/hfi1/rc.c > +++ b/drivers/infiniband/hw/hfi1/rc.c > @@ -1210,7 +1210,7 @@ static inline void hfi1_queue_rc_ack(struct hfi1_packet *packet, bool is_fecn) > if (is_fecn) > qp->s_flags |= RVT_S_ECN; > > - /* Schedule the send tasklet. */ > + /* Schedule the send work. */ > hfi1_schedule_send(qp); > unlock: > spin_unlock_irqrestore(&qp->s_lock, flags); > diff --git a/drivers/infiniband/hw/hfi1/sdma.c b/drivers/infiniband/hw/hfi1/sdma.c > index b67d23b1f286..5e1a1dd45511 100644 > --- a/drivers/infiniband/hw/hfi1/sdma.c > +++ b/drivers/infiniband/hw/hfi1/sdma.c > @@ -11,6 +11,7 @@ > #include <linux/timer.h> > #include <linux/vmalloc.h> > #include <linux/highmem.h> > +#include <linux/workqueue.h> > > #include "hfi.h" > #include "common.h" > @@ -190,11 +191,11 @@ static const struct sdma_set_state_action sdma_action_table[] = { > static void sdma_complete(struct kref *); > static void sdma_finalput(struct sdma_state *); > static void sdma_get(struct sdma_state *); > -static void sdma_hw_clean_up_task(struct tasklet_struct *); > +static void sdma_hw_clean_up_task(struct work_struct *); > static void sdma_put(struct sdma_state *); > static void sdma_set_state(struct sdma_engine *, enum sdma_states); > static void sdma_start_hw_clean_up(struct sdma_engine *); > -static void sdma_sw_clean_up_task(struct tasklet_struct *); > +static void sdma_sw_clean_up_task(struct work_struct *); > static void sdma_sendctrl(struct sdma_engine *, unsigned); > static void init_sdma_regs(struct sdma_engine *, u32, uint); > static void sdma_process_event( > @@ -503,9 +504,9 @@ static void sdma_err_progress_check(struct timer_list *t) > schedule_work(&sde->err_halt_worker); > } > > -static void sdma_hw_clean_up_task(struct tasklet_struct *t) > +static void sdma_hw_clean_up_task(struct work_struct *t) > { > - struct sdma_engine *sde = from_tasklet(sde, t, > + struct sdma_engine *sde = from_work(sde, t, > sdma_hw_clean_up_task); > u64 statuscsr; > > @@ -563,9 +564,9 @@ static void sdma_flush_descq(struct sdma_engine *sde) > sdma_desc_avail(sde, sdma_descq_freecnt(sde)); > } > > -static void sdma_sw_clean_up_task(struct tasklet_struct *t) > +static void sdma_sw_clean_up_task(struct work_struct *t) > { > - struct sdma_engine *sde = from_tasklet(sde, t, sdma_sw_clean_up_task); > + struct sdma_engine *sde = from_work(sde, t, sdma_sw_clean_up_task); > unsigned long flags; > > spin_lock_irqsave(&sde->tail_lock, flags); > @@ -624,7 +625,7 @@ static void sdma_sw_tear_down(struct sdma_engine *sde) > > static void sdma_start_hw_clean_up(struct sdma_engine *sde) > { > - tasklet_hi_schedule(&sde->sdma_hw_clean_up_task); > + queue_work(system_bh_highpri_wq, &sde->sdma_hw_clean_up_task); > } > > static void sdma_set_state(struct sdma_engine *sde, > @@ -1415,9 +1416,9 @@ int sdma_init(struct hfi1_devdata *dd, u8 port) > sde->tail_csr = > get_kctxt_csr_addr(dd, this_idx, SD(TAIL)); > > - tasklet_setup(&sde->sdma_hw_clean_up_task, > + INIT_WORK(&sde->sdma_hw_clean_up_task, > sdma_hw_clean_up_task); > - tasklet_setup(&sde->sdma_sw_clean_up_task, > + INIT_WORK(&sde->sdma_sw_clean_up_task, > sdma_sw_clean_up_task); > INIT_WORK(&sde->err_halt_worker, sdma_err_halt_wait); > INIT_WORK(&sde->flush_worker, sdma_field_flush); > @@ -2741,7 +2742,7 @@ static void __sdma_process_event(struct sdma_engine *sde, > switch (event) { > case sdma_event_e00_go_hw_down: > sdma_set_state(sde, sdma_state_s00_hw_down); > - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); > + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); > break; > case sdma_event_e10_go_hw_start: > break; > @@ -2783,13 +2784,13 @@ static void __sdma_process_event(struct sdma_engine *sde, > switch (event) { > case sdma_event_e00_go_hw_down: > sdma_set_state(sde, sdma_state_s00_hw_down); > - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); > + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); > break; > case sdma_event_e10_go_hw_start: > break; > case sdma_event_e15_hw_halt_done: > sdma_set_state(sde, sdma_state_s30_sw_clean_up_wait); > - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); > + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); > break; > case sdma_event_e25_hw_clean_up_done: > break; > @@ -2824,13 +2825,13 @@ static void __sdma_process_event(struct sdma_engine *sde, > switch (event) { > case sdma_event_e00_go_hw_down: > sdma_set_state(sde, sdma_state_s00_hw_down); > - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); > + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); > break; > case sdma_event_e10_go_hw_start: > break; > case sdma_event_e15_hw_halt_done: > sdma_set_state(sde, sdma_state_s30_sw_clean_up_wait); > - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); > + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); > break; > case sdma_event_e25_hw_clean_up_done: > break; > @@ -2864,7 +2865,7 @@ static void __sdma_process_event(struct sdma_engine *sde, > switch (event) { > case sdma_event_e00_go_hw_down: > sdma_set_state(sde, sdma_state_s00_hw_down); > - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); > + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); > break; > case sdma_event_e10_go_hw_start: > break; > @@ -2888,7 +2889,7 @@ static void __sdma_process_event(struct sdma_engine *sde, > break; > case sdma_event_e81_hw_frozen: > sdma_set_state(sde, sdma_state_s82_freeze_sw_clean); > - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); > + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); > break; > case sdma_event_e82_hw_unfreeze: > break; > @@ -2903,7 +2904,7 @@ static void __sdma_process_event(struct sdma_engine *sde, > switch (event) { > case sdma_event_e00_go_hw_down: > sdma_set_state(sde, sdma_state_s00_hw_down); > - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); > + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); > break; > case sdma_event_e10_go_hw_start: > break; > @@ -2947,7 +2948,7 @@ static void __sdma_process_event(struct sdma_engine *sde, > switch (event) { > case sdma_event_e00_go_hw_down: > sdma_set_state(sde, sdma_state_s00_hw_down); > - tasklet_hi_schedule(&sde->sdma_sw_clean_up_task); > + queue_work(system_bh_highpri_wq, &sde->sdma_sw_clean_up_task); > break; > case sdma_event_e10_go_hw_start: > break; > diff --git a/drivers/infiniband/hw/hfi1/sdma.h b/drivers/infiniband/hw/hfi1/sdma.h > index d77246b48434..3f047260cebe 100644 > --- a/drivers/infiniband/hw/hfi1/sdma.h > +++ b/drivers/infiniband/hw/hfi1/sdma.h > @@ -11,6 +11,7 @@ > #include <asm/byteorder.h> > #include <linux/workqueue.h> > #include <linux/rculist.h> > +#include <linux/workqueue.h> > > #include "hfi.h" > #include "verbs.h" > @@ -346,11 +347,11 @@ struct sdma_engine { > > /* CONFIG SDMA for now, just blindly duplicate */ > /* private: */ > - struct tasklet_struct sdma_hw_clean_up_task > + struct work_struct sdma_hw_clean_up_task > ____cacheline_aligned_in_smp; > > /* private: */ > - struct tasklet_struct sdma_sw_clean_up_task > + struct work_struct sdma_sw_clean_up_task > ____cacheline_aligned_in_smp; > /* private: */ > struct work_struct err_halt_worker; > @@ -471,7 +472,7 @@ void _sdma_txreq_ahgadd( > * Completions of submitted requests can be gotten on selected > * txreqs by giving a completion routine callback to sdma_txinit() or > * sdma_txinit_ahg(). The environment in which the callback runs > - * can be from an ISR, a tasklet, or a thread, so no sleeping > + * can be from an ISR, a work, or a thread, so no sleeping > * kernel routines can be used. Aspects of the sdma ring may > * be locked so care should be taken with locking. > * > @@ -551,7 +552,7 @@ static inline int sdma_txinit_ahg( > * Completions of submitted requests can be gotten on selected > * txreqs by giving a completion routine callback to sdma_txinit() or > * sdma_txinit_ahg(). The environment in which the callback runs > - * can be from an ISR, a tasklet, or a thread, so no sleeping > + * can be from an ISR, a work, or a thread, so no sleeping > * kernel routines can be used. The head size of the sdma ring may > * be locked so care should be taken with locking. > * > diff --git a/drivers/infiniband/hw/hfi1/tid_rdma.c b/drivers/infiniband/hw/hfi1/tid_rdma.c > index c465966a1d9c..31cb5a092f42 100644 > --- a/drivers/infiniband/hw/hfi1/tid_rdma.c > +++ b/drivers/infiniband/hw/hfi1/tid_rdma.c > @@ -2316,7 +2316,7 @@ void hfi1_rc_rcv_tid_rdma_read_req(struct hfi1_packet *packet) > */ > qpriv->r_tid_alloc = qp->r_head_ack_queue; > > - /* Schedule the send tasklet. */ > + /* Schedule the send work. */ > qp->s_flags |= RVT_S_RESP_PENDING; > if (fecn) > qp->s_flags |= RVT_S_ECN; > @@ -3807,7 +3807,7 @@ void hfi1_rc_rcv_tid_rdma_write_req(struct hfi1_packet *packet) > hfi1_tid_write_alloc_resources(qp, true); > trace_hfi1_tid_write_rsp_rcv_req(qp); > > - /* Schedule the send tasklet. */ > + /* Schedule the send work. */ > qp->s_flags |= RVT_S_RESP_PENDING; > if (fecn) > qp->s_flags |= RVT_S_ECN; > @@ -5389,7 +5389,7 @@ static void hfi1_do_tid_send(struct rvt_qp *qp) > > /* > * If the packet cannot be sent now, return and > - * the send tasklet will be woken up later. > + * the send work will be woken up later. > */ > if (hfi1_verbs_send(qp, &ps)) > return; > diff --git a/drivers/infiniband/hw/irdma/ctrl.c b/drivers/infiniband/hw/irdma/ctrl.c > index 6aed6169c07d..e9644f2b774d 100644 > --- a/drivers/infiniband/hw/irdma/ctrl.c > +++ b/drivers/infiniband/hw/irdma/ctrl.c > @@ -5271,7 +5271,7 @@ int irdma_process_cqp_cmd(struct irdma_sc_dev *dev, > } > > /** > - * irdma_process_bh - called from tasklet for cqp list > + * irdma_process_bh - called from work for cqp list > * @dev: sc device struct > */ > int irdma_process_bh(struct irdma_sc_dev *dev) > diff --git a/drivers/infiniband/hw/irdma/hw.c b/drivers/infiniband/hw/irdma/hw.c > index ad50b77282f8..18d552919c28 100644 > --- a/drivers/infiniband/hw/irdma/hw.c > +++ b/drivers/infiniband/hw/irdma/hw.c > @@ -440,12 +440,12 @@ static void irdma_ena_intr(struct irdma_sc_dev *dev, u32 msix_id) > } > > /** > - * irdma_dpc - tasklet for aeq and ceq 0 > - * @t: tasklet_struct ptr > + * irdma_dpc - work for aeq and ceq 0 > + * @t: work_struct ptr > */ > -static void irdma_dpc(struct tasklet_struct *t) > +static void irdma_dpc(struct work_struct *t) > { > - struct irdma_pci_f *rf = from_tasklet(rf, t, dpc_tasklet); > + struct irdma_pci_f *rf = from_work(rf, t, dpc_work); > > if (rf->msix_shared) > irdma_process_ceq(rf, rf->ceqlist); > @@ -455,11 +455,11 @@ static void irdma_dpc(struct tasklet_struct *t) > > /** > * irdma_ceq_dpc - dpc handler for CEQ > - * @t: tasklet_struct ptr > + * @t: work_struct ptr > */ > -static void irdma_ceq_dpc(struct tasklet_struct *t) > +static void irdma_ceq_dpc(struct work_struct *t) > { > - struct irdma_ceq *iwceq = from_tasklet(iwceq, t, dpc_tasklet); > + struct irdma_ceq *iwceq = from_work(iwceq, t, dpc_work); > struct irdma_pci_f *rf = iwceq->rf; > > irdma_process_ceq(rf, iwceq); > @@ -533,7 +533,7 @@ static irqreturn_t irdma_irq_handler(int irq, void *data) > { > struct irdma_pci_f *rf = data; > > - tasklet_schedule(&rf->dpc_tasklet); > + queue_work(system_bh_wq, &rf->dpc_work); > > return IRQ_HANDLED; > } > @@ -550,7 +550,7 @@ static irqreturn_t irdma_ceq_handler(int irq, void *data) > if (iwceq->irq != irq) > ibdev_err(to_ibdev(&iwceq->rf->sc_dev), "expected irq = %d received irq = %d\n", > iwceq->irq, irq); > - tasklet_schedule(&iwceq->dpc_tasklet); > + queue_work(system_bh_wq, &iwceq->dpc_work); > > return IRQ_HANDLED; > } > @@ -1121,14 +1121,14 @@ static int irdma_cfg_ceq_vector(struct irdma_pci_f *rf, struct irdma_ceq *iwceq, > if (rf->msix_shared && !ceq_id) { > snprintf(msix_vec->name, sizeof(msix_vec->name) - 1, > "irdma-%s-AEQCEQ-0", dev_name(&rf->pcidev->dev)); > - tasklet_setup(&rf->dpc_tasklet, irdma_dpc); > + INIT_WORK(&rf->dpc_work, irdma_dpc); > status = request_irq(msix_vec->irq, irdma_irq_handler, 0, > msix_vec->name, rf); > } else { > snprintf(msix_vec->name, sizeof(msix_vec->name) - 1, > "irdma-%s-CEQ-%d", > dev_name(&rf->pcidev->dev), ceq_id); > - tasklet_setup(&iwceq->dpc_tasklet, irdma_ceq_dpc); > + INIT_WORK(&iwceq->dpc_work, irdma_ceq_dpc); > > status = request_irq(msix_vec->irq, irdma_ceq_handler, 0, > msix_vec->name, iwceq); > @@ -1162,7 +1162,7 @@ static int irdma_cfg_aeq_vector(struct irdma_pci_f *rf) > if (!rf->msix_shared) { > snprintf(msix_vec->name, sizeof(msix_vec->name) - 1, > "irdma-%s-AEQ", dev_name(&rf->pcidev->dev)); > - tasklet_setup(&rf->dpc_tasklet, irdma_dpc); > + INIT_WORK(&rf->dpc_work, irdma_dpc); > ret = request_irq(msix_vec->irq, irdma_irq_handler, 0, > msix_vec->name, rf); > } > diff --git a/drivers/infiniband/hw/irdma/main.h b/drivers/infiniband/hw/irdma/main.h > index b65bc2ea542f..54301093b746 100644 > --- a/drivers/infiniband/hw/irdma/main.h > +++ b/drivers/infiniband/hw/irdma/main.h > @@ -30,6 +30,7 @@ > #endif > #include <linux/auxiliary_bus.h> > #include <linux/net/intel/iidc.h> > +#include <linux/workqueue.h> > #include <crypto/hash.h> > #include <rdma/ib_smi.h> > #include <rdma/ib_verbs.h> > @@ -192,7 +193,7 @@ struct irdma_ceq { > u32 irq; > u32 msix_idx; > struct irdma_pci_f *rf; > - struct tasklet_struct dpc_tasklet; > + struct work_struct dpc_work; > spinlock_t ce_lock; /* sync cq destroy with cq completion event notification */ > }; > > @@ -316,7 +317,7 @@ struct irdma_pci_f { > struct mc_table_list mc_qht_list; > struct irdma_msix_vector *iw_msixtbl; > struct irdma_qvlist_info *iw_qvlist; > - struct tasklet_struct dpc_tasklet; > + struct work_struct dpc_work; > struct msix_entry *msix_entries; > struct irdma_dma_mem obj_mem; > struct irdma_dma_mem obj_next; > diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h > index 26c615772be3..d2ebaf31ce5a 100644 > --- a/drivers/infiniband/hw/qib/qib.h > +++ b/drivers/infiniband/hw/qib/qib.h > @@ -53,6 +53,7 @@ > #include <linux/sched.h> > #include <linux/kthread.h> > #include <linux/xarray.h> > +#include <linux/workqueue.h> > #include <rdma/ib_hdrs.h> > #include <rdma/rdma_vt.h> > > @@ -562,7 +563,7 @@ struct qib_pportdata { > u8 sdma_generation; > u8 sdma_intrequest; > > - struct tasklet_struct sdma_sw_clean_up_task > + struct work_struct sdma_sw_clean_up_task > ____cacheline_aligned_in_smp; > > wait_queue_head_t state_wait; /* for state_wanted */ > @@ -1068,8 +1069,8 @@ struct qib_devdata { > u8 psxmitwait_supported; > /* cycle length of PS* counters in HW (in picoseconds) */ > u16 psxmitwait_check_rate; > - /* high volume overflow errors defered to tasklet */ > - struct tasklet_struct error_tasklet; > + /* high volume overflow errors defered to work */ > + struct work_struct error_work; > > int assigned_node_id; /* NUMA node closest to HCA */ > }; > diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c > index f93906d8fc09..c3325071f2b3 100644 > --- a/drivers/infiniband/hw/qib/qib_iba7322.c > +++ b/drivers/infiniband/hw/qib/qib_iba7322.c > @@ -46,6 +46,7 @@ > #include <rdma/ib_smi.h> > #ifdef CONFIG_INFINIBAND_QIB_DCA > #include <linux/dca.h> > +#include <linux/workqueue.h> > #endif > > #include "qib.h" > @@ -1711,9 +1712,9 @@ static noinline void handle_7322_errors(struct qib_devdata *dd) > return; > } > > -static void qib_error_tasklet(struct tasklet_struct *t) > +static void qib_error_work(struct work_struct *t) > { > - struct qib_devdata *dd = from_tasklet(dd, t, error_tasklet); > + struct qib_devdata *dd = from_work(dd, t, error_work); > > handle_7322_errors(dd); > qib_write_kreg(dd, kr_errmask, dd->cspec->errormask); > @@ -3001,7 +3002,7 @@ static noinline void unlikely_7322_intr(struct qib_devdata *dd, u64 istat) > unknown_7322_gpio_intr(dd); > if (istat & QIB_I_C_ERROR) { > qib_write_kreg(dd, kr_errmask, 0ULL); > - tasklet_schedule(&dd->error_tasklet); > + queue_work(system_bh_wq, &dd->error_work); > } > if (istat & INT_MASK_P(Err, 0) && dd->rcd[0]) > handle_7322_p_errors(dd->rcd[0]->ppd); > @@ -3515,7 +3516,7 @@ static void qib_setup_7322_interrupt(struct qib_devdata *dd, int clearpend) > for (i = 0; i < ARRAY_SIZE(redirect); i++) > qib_write_kreg(dd, kr_intredirect + i, redirect[i]); > dd->cspec->main_int_mask = mask; > - tasklet_setup(&dd->error_tasklet, qib_error_tasklet); > + INIT_WORK(&dd->error_work, qib_error_work); > } > > /** > diff --git a/drivers/infiniband/hw/qib/qib_rc.c b/drivers/infiniband/hw/qib/qib_rc.c > index a1c20ffb4490..79e31921e384 100644 > --- a/drivers/infiniband/hw/qib/qib_rc.c > +++ b/drivers/infiniband/hw/qib/qib_rc.c > @@ -593,7 +593,7 @@ int qib_make_rc_req(struct rvt_qp *qp, unsigned long *flags) > * > * This is called from qib_rc_rcv() and qib_kreceive(). > * Note that RDMA reads and atomics are handled in the > - * send side QP state and tasklet. > + * send side QP state and work. > */ > void qib_send_rc_ack(struct rvt_qp *qp) > { > @@ -670,7 +670,7 @@ void qib_send_rc_ack(struct rvt_qp *qp) > /* > * We are out of PIO buffers at the moment. > * Pass responsibility for sending the ACK to the > - * send tasklet so that when a PIO buffer becomes > + * send work so that when a PIO buffer becomes > * available, the ACK is sent ahead of other outgoing > * packets. > */ > @@ -715,7 +715,7 @@ void qib_send_rc_ack(struct rvt_qp *qp) > qp->s_nak_state = qp->r_nak_state; > qp->s_ack_psn = qp->r_ack_psn; > > - /* Schedule the send tasklet. */ > + /* Schedule the send work. */ > qib_schedule_send(qp); > } > unlock: > @@ -806,7 +806,7 @@ static void reset_psn(struct rvt_qp *qp, u32 psn) > qp->s_psn = psn; > /* > * Set RVT_S_WAIT_PSN as qib_rc_complete() may start the timer > - * asynchronously before the send tasklet can get scheduled. > + * asynchronously before the send work can get scheduled. > * Doing it in qib_make_rc_req() is too late. > */ > if ((qib_cmp24(qp->s_psn, qp->s_sending_hpsn) <= 0) && > @@ -1292,7 +1292,7 @@ static void qib_rc_rcv_resp(struct qib_ibport *ibp, > (qib_cmp24(qp->s_sending_psn, qp->s_sending_hpsn) <= 0)) { > > /* > - * If send tasklet not running attempt to progress > + * If send work not running attempt to progress > * SDMA queue. > */ > if (!(qp->s_flags & RVT_S_BUSY)) { > @@ -1629,7 +1629,7 @@ static int qib_rc_rcv_error(struct ib_other_headers *ohdr, > case OP(FETCH_ADD): { > /* > * If we didn't find the atomic request in the ack queue > - * or the send tasklet is already backed up to send an > + * or the send work is already backed up to send an > * earlier entry, we can ignore this request. > */ > if (!e || e->opcode != (u8) opcode || old_req) > @@ -1996,7 +1996,7 @@ void qib_rc_rcv(struct qib_ctxtdata *rcd, struct ib_header *hdr, > qp->r_nak_state = 0; > qp->r_head_ack_queue = next; > > - /* Schedule the send tasklet. */ > + /* Schedule the send work. */ > qp->s_flags |= RVT_S_RESP_PENDING; > qib_schedule_send(qp); > > @@ -2059,7 +2059,7 @@ void qib_rc_rcv(struct qib_ctxtdata *rcd, struct ib_header *hdr, > qp->r_nak_state = 0; > qp->r_head_ack_queue = next; > > - /* Schedule the send tasklet. */ > + /* Schedule the send work. */ > qp->s_flags |= RVT_S_RESP_PENDING; > qib_schedule_send(qp); > > diff --git a/drivers/infiniband/hw/qib/qib_ruc.c b/drivers/infiniband/hw/qib/qib_ruc.c > index 1fa21938f310..f44a2a8b4b1e 100644 > --- a/drivers/infiniband/hw/qib/qib_ruc.c > +++ b/drivers/infiniband/hw/qib/qib_ruc.c > @@ -257,7 +257,7 @@ void _qib_do_send(struct work_struct *work) > * @qp: pointer to the QP > * > * Process entries in the send work queue until credit or queue is > - * exhausted. Only allow one CPU to send a packet per QP (tasklet). > + * exhausted. Only allow one CPU to send a packet per QP (work). > * Otherwise, two threads could send packets out of order. > */ > void qib_do_send(struct rvt_qp *qp) > @@ -299,7 +299,7 @@ void qib_do_send(struct rvt_qp *qp) > spin_unlock_irqrestore(&qp->s_lock, flags); > /* > * If the packet cannot be sent now, return and > - * the send tasklet will be woken up later. > + * the send work will be woken up later. > */ > if (qib_verbs_send(qp, priv->s_hdr, qp->s_hdrwords, > qp->s_cur_sge, qp->s_cur_size)) > diff --git a/drivers/infiniband/hw/qib/qib_sdma.c b/drivers/infiniband/hw/qib/qib_sdma.c > index 5e86cbf7d70e..facb3964d2ec 100644 > --- a/drivers/infiniband/hw/qib/qib_sdma.c > +++ b/drivers/infiniband/hw/qib/qib_sdma.c > @@ -34,6 +34,7 @@ > #include <linux/spinlock.h> > #include <linux/netdevice.h> > #include <linux/moduleparam.h> > +#include <linux/workqueue.h> > > #include "qib.h" > #include "qib_common.h" > @@ -62,7 +63,7 @@ static void sdma_get(struct qib_sdma_state *); > static void sdma_put(struct qib_sdma_state *); > static void sdma_set_state(struct qib_pportdata *, enum qib_sdma_states); > static void sdma_start_sw_clean_up(struct qib_pportdata *); > -static void sdma_sw_clean_up_task(struct tasklet_struct *); > +static void sdma_sw_clean_up_task(struct work_struct *); > static void unmap_desc(struct qib_pportdata *, unsigned); > > static void sdma_get(struct qib_sdma_state *ss) > @@ -119,9 +120,9 @@ static void clear_sdma_activelist(struct qib_pportdata *ppd) > } > } > > -static void sdma_sw_clean_up_task(struct tasklet_struct *t) > +static void sdma_sw_clean_up_task(struct work_struct *t) > { > - struct qib_pportdata *ppd = from_tasklet(ppd, t, > + struct qib_pportdata *ppd = from_work(ppd, t, > sdma_sw_clean_up_task); > unsigned long flags; > > @@ -188,7 +189,7 @@ static void sdma_sw_tear_down(struct qib_pportdata *ppd) > > static void sdma_start_sw_clean_up(struct qib_pportdata *ppd) > { > - tasklet_hi_schedule(&ppd->sdma_sw_clean_up_task); > + queue_work(system_bh_highpri_wq, &ppd->sdma_sw_clean_up_task); > } > > static void sdma_set_state(struct qib_pportdata *ppd, > @@ -437,7 +438,7 @@ int qib_setup_sdma(struct qib_pportdata *ppd) > > INIT_LIST_HEAD(&ppd->sdma_activelist); > > - tasklet_setup(&ppd->sdma_sw_clean_up_task, sdma_sw_clean_up_task); > + INIT_WORK(&ppd->sdma_sw_clean_up_task, sdma_sw_clean_up_task); > > ret = dd->f_init_sdma_regs(ppd); > if (ret) > diff --git a/drivers/infiniband/sw/rdmavt/qp.c b/drivers/infiniband/sw/rdmavt/qp.c > index e6203e26cc06..efe4689151c2 100644 > --- a/drivers/infiniband/sw/rdmavt/qp.c > +++ b/drivers/infiniband/sw/rdmavt/qp.c > @@ -1306,7 +1306,7 @@ int rvt_error_qp(struct rvt_qp *qp, enum ib_wc_status err) > > rdi->driver_f.notify_error_qp(qp); > > - /* Schedule the sending tasklet to drain the send work queue. */ > + /* Schedule the sending work to drain the send work queue. */ > if (READ_ONCE(qp->s_last) != qp->s_head) > rdi->driver_f.schedule_send(qp); > |
