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IB/qib: Convert opcode counters to per-context

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This fix changes the opcode relative counters for receive to per
context.

Profiling has shown that when mulitple contexts are being used there
is a lot of cache activity associated with these counters.

The code formerly kept these counters per port, but only provided the
interface to read per HCA.  This patch converts the read of counters
to per HCA and adds the debugfs hooks to be able to read the file as a
sequence of opcodes.

Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Mike Marciniszyn
2013-06-15 17:07:03 -04:00
committed by Roland Dreier
parent 85caafe307
commit ddb8876589
8 changed files with 284 additions and 23 deletions
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8
drivers/infiniband/hw/qib/qib_verbs.c
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@@ -645,9 +645,11 @@ void qib_ib_rcv(struct qib_ctxtdata *rcd, void *rhdr, void *data, u32 tlen)
} else
goto drop;
opcode = be32_to_cpu(ohdr->bth[0]) >> 24;
ibp->opstats[opcode & 0x7f].n_bytes += tlen;
ibp->opstats[opcode & 0x7f].n_packets++;
opcode = (be32_to_cpu(ohdr->bth[0]) >> 24) & 0x7f;
#ifdef CONFIG_DEBUG_FS
rcd->opstats->stats[opcode].n_bytes += tlen;
rcd->opstats->stats[opcode].n_packets++;
#endif
/* Get the destination QP number. */
qp_num = be32_to_cpu(ohdr->bth[1]) & QIB_QPN_MASK;