svn commit: r280592 - stable/10/sys/dev/sfxge

[Andrew Rybchenko]

Author: arybchik
Date: Wed Mar 25 13:14:50 2015
New Revision: 280592
URL: https://svnweb.freebsd.org/changeset/base/280592

Log:
  MFC: 279231
  
  sfxge: add put-list high watermark
  
  It is interesting to know how long put-list grows.
  
  Sponsored by:   Solarflare Communications, Inc.
  Approved by:    gnn (mentor)

Modified:
  stable/10/sys/dev/sfxge/sfxge_tx.c
  stable/10/sys/dev/sfxge/sfxge_tx.h
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/dev/sfxge/sfxge_tx.c
==============================================================================
--- stable/10/sys/dev/sfxge/sfxge_tx.c	Wed Mar 25 13:14:25 2015	(r280591)
+++ stable/10/sys/dev/sfxge/sfxge_tx.c	Wed Mar 25 13:14:50 2015	(r280592)
@@ -214,6 +214,9 @@ sfxge_tx_qdpl_swizzle(struct sfxge_txq *
 		count++;
 	} while (mbuf != NULL);
 
+	if (count > stdp->std_put_hiwat)
+		stdp->std_put_hiwat = count;
+
 	/* Append the reversed put list to the get list. */
 	KASSERT(*get_tailp == NULL, ("*get_tailp != NULL"));
 	*stdp->std_getp = get_next;
@@ -1484,6 +1487,10 @@ sfxge_tx_qinit(struct sfxge_softc *sc, u
 			SYSCTL_CHILDREN(txq_node), OID_AUTO,
 			"dpl_get_hiwat", CTLFLAG_RD | CTLFLAG_STATS,
 			&stdp->std_get_hiwat, 0, "");
+	SYSCTL_ADD_UINT(device_get_sysctl_ctx(sc->dev),
+			SYSCTL_CHILDREN(txq_node), OID_AUTO,
+			"dpl_put_hiwat", CTLFLAG_RD | CTLFLAG_STATS,
+			&stdp->std_put_hiwat, 0, "");
 #endif
 
 	txq->type = type;

Modified: stable/10/sys/dev/sfxge/sfxge_tx.h
==============================================================================
--- stable/10/sys/dev/sfxge/sfxge_tx.h	Wed Mar 25 13:14:25 2015	(r280591)
+++ stable/10/sys/dev/sfxge/sfxge_tx.h	Wed Mar 25 13:14:50 2015	(r280592)
@@ -102,6 +102,8 @@ struct sfxge_tx_dpl {
 						 * in get list */
 	unsigned int	std_get_hiwat;		/* Packets in get list
 						 * high watermark */
+	unsigned int	std_put_hiwat;		/* Packets in put list
+						 * high watermark */
 };