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authorMike Marciniszyn <mike.marciniszyn@intel.com>2013-06-16 01:07:09 +0400
committerRoland Dreier <roland@purestorage.com>2013-06-22 04:19:51 +0400
commit17db3a92c144a0f8a81c52e94b7110bc86b5067f (patch)
tree3c5a13b1820b2bfd34eaac578d0a8c62987c1277 /drivers/infiniband
parentddb8876589702a9396d15d9d4075e6388d0600cf (diff)
downloadlinux-17db3a92c144a0f8a81c52e94b7110bc86b5067f.tar.xz
IB/qib: Add per-context stats interface
This patch adds a debugfs stats interface for per kernel contexts packet counts. The code uses the opcode stats count and eliminates the counter in the context. 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>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/qib/qib_debugfs.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/qib/qib_debugfs.c b/drivers/infiniband/hw/qib/qib_debugfs.c
index 47d01164cc91..a4e6ee154f19 100644
--- a/drivers/infiniband/hw/qib/qib_debugfs.c
+++ b/drivers/infiniband/hw/qib/qib_debugfs.c
@@ -126,6 +126,68 @@ static int _opcode_stats_seq_show(struct seq_file *s, void *v)
DEBUGFS_FILE(opcode_stats)
+static void *_ctx_stats_seq_start(struct seq_file *s, loff_t *pos)
+{
+ struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
+ struct qib_devdata *dd = dd_from_dev(ibd);
+
+ if (!*pos)
+ return SEQ_START_TOKEN;
+ if (*pos >= dd->first_user_ctxt)
+ return NULL;
+ return pos;
+}
+
+static void *_ctx_stats_seq_next(struct seq_file *s, void *v, loff_t *pos)
+{
+ struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
+ struct qib_devdata *dd = dd_from_dev(ibd);
+
+ if (v == SEQ_START_TOKEN)
+ return pos;
+
+ ++*pos;
+ if (*pos >= dd->first_user_ctxt)
+ return NULL;
+ return pos;
+}
+
+static void _ctx_stats_seq_stop(struct seq_file *s, void *v)
+{
+ /* nothing allocated */
+}
+
+static int _ctx_stats_seq_show(struct seq_file *s, void *v)
+{
+ loff_t *spos;
+ loff_t i, j;
+ u64 n_packets = 0;
+ struct qib_ibdev *ibd = (struct qib_ibdev *)s->private;
+ struct qib_devdata *dd = dd_from_dev(ibd);
+
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(s, "Ctx:npkts\n");
+ return 0;
+ }
+
+ spos = v;
+ i = *spos;
+
+ if (!dd->rcd[i])
+ return SEQ_SKIP;
+
+ for (j = 0; j < ARRAY_SIZE(dd->rcd[i]->opstats->stats); j++)
+ n_packets += dd->rcd[i]->opstats->stats[j].n_packets;
+
+ if (!n_packets)
+ return SEQ_SKIP;
+
+ seq_printf(s, " %llu:%llu\n", i, n_packets);
+ return 0;
+}
+
+DEBUGFS_FILE(ctx_stats)
+
void qib_dbg_ibdev_init(struct qib_ibdev *ibd)
{
char name[10];
@@ -137,6 +199,7 @@ void qib_dbg_ibdev_init(struct qib_ibdev *ibd)
return;
}
DEBUGFS_FILE_CREATE(opcode_stats);
+ DEBUGFS_FILE_CREATE(ctx_stats);
return;
}