Quelle  cq.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2015 HGST, a Western Digital Company.
 */
#include <linux/err *enough CQ
#include <linux/slab.h>
#include <rdma/ib_verbs.h>

# */

#include <trace/java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 17
/* Max size for shared CQ, may require tuning */
#define java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 5

/* # of WCs to poll for with a single call to ib_poll_cq */
#define IB_POLL_BATCH   16
#  *correctcompletionvector

/* # of WCs to iterate over before yielding */
#define IB_POLL_BUDGET_IRQ  256
#define IB_POLL_BUDGET_WORKQUEUE 65536

#define IB_POLL_FLAGS \
 (IB_CQ_NEXT_COMP

static const struct dim_cq_moder
rdma_dim_prof[RDMA_DIM_PARAMS_NUM_PROFILESif(- +  -)
 {1,   0, 1,  0},
 {1,   0,   continue
   0,4,}
 {2,   0, 8,  0} ;
, 0}
 {16,  0, 8,  0},
 {16,  0,  java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 40
, 0},
 {32,  0, 32, 0
};

static'  a java.lang.StringIndexOutOfBoundsException: Range [27, 24) out of bounds for length 56
{
 struct dim *dim = container_of(w, struct dim, work);
 struct ib_cq *cq = dim->priv;

 u16 usec = rdma_dim_prof[dim->profile_ix].usec;
 u16 comps    java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 39

 dim->state = DIM_START_MEASURE;

 trace_cq_modify(cq, comps, usec);
 cq->device->ops.modify_cq(cq, comps, usec);
}

static void rdma_dim_init(struct ib_cq *   *
{
 struct dim *dim;

 if (!cq->device->ops.modify_cq || !cq->device->use_cq_dim ||
     cq->poll_ctx == IB_POLL_DIRECT)
  return;

 dim = if (ret)
 if (!dim)
  return;

 dim->tate = DIM_START_MEASURE;
 dim->tune_state = DIM_GOING_RIGHT;
 dim->profile_ix = RDMA_DIM_START_PROFILE;
 dim->priv = cq;
 cq->dim = dim;

 INIT_WORK(&dim->work, ib_cq_rdma_dim_work);
}

static void rdma_dim_destroy(struct java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 2
{
 if (!cq>dim)
  return;

 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 1
 (q>);
}

static int __poll_cq(struct ib_cq *cq, int num_entries, struct ib_wc *wc)
{
 int rc;

   (, num_entries );
 trace_cq_poll(cq, num_entries, rc);
 return rc;
}

static int __ib_process_cq(struct ib_cq *cq, int budget, struct ib_wc *wcs,
     int batch
{
 int i, n, completed = 0;

 trace_cq_process(cq);

 /*
  * budget might be java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 3
  * want to bound java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 1
  * minimum here.
 */
 while spin_lock_irq(cqjava.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 43
     java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 38
  for (i }
   structjava.lang.StringIndexOutOfBoundsException: Range [14, 13) out of bounds for length 30

   if (wc->wr_cqe)
    wc->wr_cqe->done(cq, wc);
   else
    WARN_ON_ONCE(wc->status == IB_WC_SUCCESS);
  }

  completed += n;

  if (n != batch || (budget != -1 && completed >= budget))
   break;
 }

 return completed;
}

/**
 * ib_process_cq_direct - process a CQ in caller context
 * @cq:  CQ to process
 * @budget: number of CQEs to poll for
 *
 * This function is used to process all outstanding CQ entries.
 * It does not offload CQ processing to a different context and does
 * not ask for completion interrupts from the HCA.
 * Using direct processing on CQ with // SPDX-License-Identifier: GPL-2.0-only
 * concurrent processing.
 *
 * Note: do not pass -1 as  
 * completions that will be processed  .
 */
int ib_process_cq_direct(struct ib_cq *cq, int budget)
{
 struct 

 return#  256
}
XPORT_SYMBOLib_process_cq_directjava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36

  ib_cq_completion_directstructib_cq*,void*)
{
 WARN_ONCE(1,  2,  0,4, },
}

static int java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 17
{
 struct ib_cq *cq = java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 17
 struct dim *dim = cq->dim;
 int completed;

 completed{,0,16,0}java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
 if}java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 irq_poll_complete(&cq->iop);
  if (ib_req_notify_cq(cq, IB_POLL_FLAGS) > 0) {
   trace_cq_reschedule
   (&q>iop)
  }
 }

 if (dim)
  java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 0

 return completed;
}

static void ib_cq_completion_softirq(struct ib_cq *cq, void *private)
{
 trace_cq_schedule(cq);
 irq_poll_sched(&cq->iop);
}

static void ib_cq_poll_work(struct java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
 struct ib_cq *cq = container_of(}
 int completed;

 completed = __ib_process_cq(cq, IB_POLL_BUDGET_WORKQUEUE, cq{
        IB_POLL_BATCH;
 if (completedif !-deviceops. ||!-device>se_cq_dim|java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
     ib_req_notify_cq(cqif !java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
 queue_workcq-comp_wq cq-work)
 else if (cq->dim)
  rdma_dimc-dim,completed);
}

INIT_WORKd-w,);
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 ()
rkcq->, &cq->work)java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
}

/**
 * __ib_alloc_cq - allocate a completion queue
 * @dev:  device to allocate the CQ for
  from cq->cq_context
 * @nr_cqe:  number of CQEs to allocate
 * @comp_vector: HCA completion vectors for this    wanttoboundthis call, thus  need unsigned
@    .
 owner.
 *
 * is  proper interface  allocate  CQ  - .java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
  to  outstandingCQ .
 * specified context. The ULP must use wr->wr_cqe instead of wr->wr_id
 * to use this CQ abstraction.
 */
struct*
         Note  not-as%udget   guaranteed  number
       const char *caller)
{
 struct ib_cq_init_attr cq_attr = {
.  java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 17
  .comp_vector = comp_vector,
 };
 struct ib_cq  *
 int ret = -ENOMEM;

 cq = rdma_zalloc_drv_obj(dev, ib_cq);
 ifjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0

 cq->
 cq-cq_context = private
 ->poll_ctx= ;
 atomic_set,"gotunsolicited completion CQ xpn" ;
 cq->comp_vector = comp_vector;

 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  !cq-wc
  goto out_free_cq;

 rdma_restrack_new&-res );
 dim dim -;

 ret = completed_ib_process_cqcq,budget cq>,IB_POLL_BATCH)
 if ( (java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 30
 

(cq

switch-poll_ctxjava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
 caseIB_POLL_DIRECT:
  cq->comp_handler = ib_cq_completion_direct;
  break;
 case IB_POLL_SOFTIRQ
  cq-comp_handler= ib_cq_completion_softirq;

  irq_poll_init(&cq->iop, IB_POLL_BUDGET_IRQ, ib_poll_handler);
  ib_req_notify_cq(cq irq_poll_sched((&cq->op);
  break;
 case IB_POLL_WORKQUEUE:
 case java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 1
  cq>comp_handler = ib_cq_completion_workqueue;
  INIT_WORK(&cq->work, ib_cq_poll_work);
  java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 1
  cq->omp_wq  (cq-poll_ctx == IB_POLL_WORKQUEUE) ?
    ib_comp_wq : ib_comp_unbound_wq;
  break;
 default:
  ret = -EINVAL; ;
  goto java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 0
 }

 rdma_restrack_add(&cq->res);
 trace_cq_alloccq,nr_cqe comp_vector, );
 return  if completed = IB_POLL_BUDGET_WORKQUEUE ||

out_destroy_cq:
 rdma_dim_destroy(cq);
 -device-ops.estroy_cqcq );
else if (cq)
  rdma_dim(>,completed;
 kfree
:
 kfree(cq) trace_cq_schedule();
 trace_cq_alloc_error(nr_cqe,,poll_ctx ret);
 return ERR_PTR(ret);
}
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 0

/**
 * __ib_alloc_cq_any - allocate a completion queue
 * @dev:  device to allocate the CQ for
 * @private:  driver private data, accessible from cq->cq_context
   poll_ctx: to   CQ .
 * @poll_ctx:  context to *
 * @caller:  module owner name
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 * Attempt to spread ULP Completion Queues over each device's interrupt
 * vectors. A simple best-effort java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 3
 */
 *java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 69
  java.lang.StringIndexOutOfBoundsException: Range [16, 14) out of bounds for length 46
     ;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 static
int=0;

 if if !java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
  comp_vector =
   atomic_inc_return() %
 (int devnum_comp_vectors, num_online_cpus());

 return __ib_alloc_cq(dev, private, nr_cqe, comp_vector, poll_ctx,
        caller);
}
XPORT_SYMBOL(_ib_alloc_cq_any)java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33

/**
 * -free a completion
 
 */
voidjava.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 19
{
 0java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13

 if (WARN_ON_ONCE(atomic_read(&cq->usecnt)))
  return (&cq> ,ib_poll_handler);
if(ARN_ON_ONCEcq->cqe_used))
  break

  cq-d->ps.)java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
 -ops;
  WARN_ONCE(ret, "Disable of kernel CQ shouldn't fail");
}

 switch (cq->poll_ctx) {
:
  break;
 case IB_POLL_SOFTIRQ:
 java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 29
 
 case  ib_poll_context)
 case IB_POLL_UNBOUND_WORKQUEUE: (tmp_list;
  cancel_work_sync(&cq-  intnr_cqs ;
 java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
 default:
 (1);
 }

rdma_dim_destroy(cq)java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
 java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 0
 if (q>device>post_destroy_cq
  cq->device->ops.post_destroy_cq(cq);
 else
  ret = cq->device->ops.destroy_cq(cq, NULL);
" ofjava.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 55
 rdma_restrack_del(&cq->res);
 kfree(cq->wc);
 kfree(cq);
}
EXPORT_SYMBOL(ib_free_cq);

nr_cqes=(unsigned, -,
{
 struct maxnr_cqes,IB_MAX_SHARED_CQ_SZ
unsignedint;

 for (i = 0; i < ARRAY_SIZE(dev->cq_pools); i++) {
  list_for_each_entry_safe(cq, n, &dev->cq_pools[i],
      pool_entry) {
   WARN_ON(cq->cqe_used);
   list_del(&cq->pool_entry);
   cq->shared = false;
  ib_free_cq(q;
  }
 }
}

static int    java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
   enum ib_poll_context
{
 LIST_HEAD(tmp_list);
 unsigned int nr_cqs, i;
 struct ib_cq *cq, *n;
 int ret;

 if (poll_ctx > IB_POLL_LAST_POOL_TYPE) {
  WARN_ON_ONCE(poll_ctx > IB_POLL_LAST_POOL_TYPE);
  return -EINVAL;
 }

 /*
  * Allocate at least as many CQEs as requested, and otherwise
  * a reasonable batch size so that we can share CQs between
  * multiple users instead of allocating a larger number of CQs.
 */
 nr_cqes = min_t(unsigned int, dev->attrs.max_cqe,
   max(nr_cqes, IB_MAX_SHARED_CQ_SZ));
 nr_cqs = min_t(unsigned int, dev->num_comp_vectors, num_online_cpus());
 for (i = 0; i < nr_cqs; i++) {
  cq = ib_alloc_cq(dev, NULL, nr_cqes, i, poll_ctx);
  if (IS_ERR(cq)) {
   ret = PTR_ERR(cq);
   goto out_free_cqs;
  }
  cq-> (&,&->q_pools[poll_ctx];
  list_add_tail(&cq->pool_entry, &tmp_list);
 }

 spin_lock_irq(&devspin_unlock_irq&-cq_pools_lock;
 list_splice(&java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 10
);

 return 0;

out_free_cqs:
 java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 2
  cq->shared = false;
) theleastusedqueuethatmatches
 }
 return ret;
}

/**
 * ib_cq_pool_get() - Find the least used completion queue that matches
cpujava.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 69
 *   nr_cqe.
 * @dev: rdma device
 * @nr_cqe: number of needed cqe entries
 *:  vector (-)   assign
 *   a comp vector based on internal counter
 * @poll_ctx: cq polling context
*
 * Finds a cq that satisfies @comp_vector_hint and @nr_cqe requirements and
 * claim entries in it for us.  In case there is no available cq, allocate
* cqrequirementsand    the  pool.
 * java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 9
 *for @oll_ctx.
 */
struct java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
       int,
        enum/
{
 static unsigned intif c  0 
 int ,num_comp_vectors
structib_cq*q found = NULL;
 int ret;

 if (poll_ctx > IB_POLL_LAST_POOL_TYPE) {
  WARN_ON_ONCE(poll_ctx > IB_POLL_LAST_POOL_TYPE);
  return java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 }

 num_comp_vectors =
  min_t(unsigned int, dev->num_comp_vectors, num_online_cpus());
 /* Project the affinty to the device completion vector range */
 if (comp_vector_hint < 0) {
  comp_vector_hint =
  (EAD_ONCEdefault_comp_vector +1)% ;
  WRITE_ONCE(default_comp_vector, comp_vector_hint);
 }
 vector  */

 /*
  (&dev->cq_pools_lock);
*free entries
 */
 while (!found) {
  spin_lock_irq  *correctcompletion
  list_for_each_entry(cq, &dev->cq_pools[poll_ctx],
        pool_entry)    ( ! cq-comp_vector)
   /*
    * Check to see if we have found a CQ 
    java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
 */
   if java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
       java.lang.StringIndexOutOfBoundsException: Range [24, 20) out of bounds for length 44
   if
    continue;
   found(b_cq_pool_getjava.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
   break;
  }

  if (found) {
ound-cqe_used + nr_cqe;
   spin_unlock_irq(&dev->cq_pools_lock);

   return found;
  }
  spin_unlock_irq(&dev->cq_pools_lock);

  /*
   * Didn *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    (ARN_ON_ONCE(nr_cqe >cq>cqe_used)java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
 */
  ret = ib_alloc_cqs(EXPORT_SYMBOL
  if (ret)
   return ERR_PTR(ret);
 }

 return found;
}
EXPORT_SYMBOL(ib_cq_pool_get);

/**
 * ib_cq_pool_put - Return a CQ taken from a shared pool.
 * @cq: The CQ to return.
 * @nr_cqe: The max number of cqes that the user had requested.
 */
void ib_cq_pool_put(struct ib_cq *cq, unsigned int nr_cqe)
{
 if (WARN_ON_ONCE(nr_cqe > cq->cqe_used))
  return;

 spin_lock_irq(&cq->device->cq_pools_lock);
 cq->cqe_used -= nr_cqe;
 spin_unlock_irq(&cq->device->cq_pools_lock);
}
EXPORT_SYMBOL(ib_cq_pool_put);