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author | Mike Marciniszyn <mike.marciniszyn@intel.com> | 2013-06-15 21:07:09 (GMT) |
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committer | Roland Dreier <roland@purestorage.com> | 2013-06-22 00:19:51 (GMT) |
commit | 17db3a92c144a0f8a81c52e94b7110bc86b5067f (patch) | |
tree | 3c5a13b1820b2bfd34eaac578d0a8c62987c1277 /drivers/infiniband/hw | |
parent | ddb8876589702a9396d15d9d4075e6388d0600cf (diff) | |
download | linux-fsl-qoriq-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/hw')
-rw-r--r-- | drivers/infiniband/hw/qib/qib_debugfs.c | 63 |
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 47d0116..a4e6ee1 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; } |