From 17db3a92c144a0f8a81c52e94b7110bc86b5067f Mon Sep 17 00:00:00 2001 From: Mike Marciniszyn Date: Sat, 15 Jun 2013 17:07:09 -0400 Subject: 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 Signed-off-by: Mike Marciniszyn Signed-off-by: Roland Dreier --- drivers/infiniband/hw/qib/qib_debugfs.c | 63 +++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) (limited to 'drivers/infiniband/hw/qib/qib_debugfs.c') 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; } -- cgit v1.2.3-55-g7522