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RDMA/cxgb4: Remove kfifo usage

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Using kfifos for ID management was limiting the number of QPs and
preventing NP384 MPI jobs.  So replace it with a simple bitmap
allocator.

Remove IDs from the IDR tables before deallocating them.  This bug was
causing the BUG_ON() in insert_handle() to fire because the ID was
getting reused before being removed from the IDR table.

Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Vipul Pandya
2012-05-18 15:29:32 +05:30
committed by Roland Dreier
parent d716a2a014
commit ec3eead217
7 changed files with 203 additions and 150 deletions
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37
drivers/infiniband/hw/cxgb4/device.c
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@@ -252,25 +252,26 @@ static int stats_show(struct seq_file *seq, void *v)
{
struct c4iw_dev *dev = seq->private;
seq_printf(seq, " Object: %10s %10s %10s\n", "Total", "Current", "Max");
seq_printf(seq, " PDID: %10llu %10llu %10llu\n",
seq_printf(seq, " Object: %10s %10s %10s %10s\n", "Total", "Current",
"Max", "Fail");
seq_printf(seq, " PDID: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.pd.total, dev->rdev.stats.pd.cur,
dev->rdev.stats.pd.max);
seq_printf(seq, " QID: %10llu %10llu %10llu\n",
dev->rdev.stats.pd.max, dev->rdev.stats.pd.fail);
seq_printf(seq, " QID: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.qid.total, dev->rdev.stats.qid.cur,
dev->rdev.stats.qid.max);
seq_printf(seq, " TPTMEM: %10llu %10llu %10llu\n",
dev->rdev.stats.qid.max, dev->rdev.stats.qid.fail);
seq_printf(seq, " TPTMEM: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.stag.total, dev->rdev.stats.stag.cur,
dev->rdev.stats.stag.max);
seq_printf(seq, " PBLMEM: %10llu %10llu %10llu\n",
dev->rdev.stats.stag.max, dev->rdev.stats.stag.fail);
seq_printf(seq, " PBLMEM: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.pbl.total, dev->rdev.stats.pbl.cur,
dev->rdev.stats.pbl.max);
seq_printf(seq, " RQTMEM: %10llu %10llu %10llu\n",
dev->rdev.stats.pbl.max, dev->rdev.stats.pbl.fail);
seq_printf(seq, " RQTMEM: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.rqt.total, dev->rdev.stats.rqt.cur,
dev->rdev.stats.rqt.max);
seq_printf(seq, " OCQPMEM: %10llu %10llu %10llu\n",
dev->rdev.stats.rqt.max, dev->rdev.stats.rqt.fail);
seq_printf(seq, " OCQPMEM: %10llu %10llu %10llu %10llu\n",
dev->rdev.stats.ocqp.total, dev->rdev.stats.ocqp.cur,
dev->rdev.stats.ocqp.max);
dev->rdev.stats.ocqp.max, dev->rdev.stats.ocqp.fail);
seq_printf(seq, " DB FULL: %10llu\n", dev->rdev.stats.db_full);
seq_printf(seq, " DB EMPTY: %10llu\n", dev->rdev.stats.db_empty);
seq_printf(seq, " DB DROP: %10llu\n", dev->rdev.stats.db_drop);
@@ -292,11 +293,17 @@ static ssize_t stats_clear(struct file *file, const char __user *buf,
mutex_lock(&dev->rdev.stats.lock);
dev->rdev.stats.pd.max = 0;
dev->rdev.stats.pd.fail = 0;
dev->rdev.stats.qid.max = 0;
dev->rdev.stats.qid.fail = 0;
dev->rdev.stats.stag.max = 0;
dev->rdev.stats.stag.fail = 0;
dev->rdev.stats.pbl.max = 0;
dev->rdev.stats.pbl.fail = 0;
dev->rdev.stats.rqt.max = 0;
dev->rdev.stats.rqt.fail = 0;
dev->rdev.stats.ocqp.max = 0;
dev->rdev.stats.ocqp.fail = 0;
dev->rdev.stats.db_full = 0;
dev->rdev.stats.db_empty = 0;
dev->rdev.stats.db_drop = 0;
@@ -350,8 +357,8 @@ void c4iw_release_dev_ucontext(struct c4iw_rdev *rdev,
entry = list_entry(pos, struct c4iw_qid_list, entry);
list_del_init(&entry->entry);
if (!(entry->qid & rdev->qpmask)) {
c4iw_put_resource(&rdev->resource.qid_fifo, entry->qid,
&rdev->resource.qid_fifo_lock);
c4iw_put_resource(&rdev->resource.qid_table,
entry->qid);
mutex_lock(&rdev->stats.lock);
rdev->stats.qid.cur -= rdev->qpmask + 1;
mutex_unlock(&rdev->stats.lock);