diff options
| author | Ira Weiny <ira.weiny@intel.com> | 2019-03-20 00:11:47 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-03-27 21:52:01 +0300 |
| commit | 056533192a9e04cac5ecd0ac683a1d659cb712ad (patch) | |
| tree | 9f02bbc1a289110c55991bbaa655d92a35c0a6d4 /drivers/infiniband/core/user_mad.c | |
| parent | 0e65bae205cbec92029ff7b3c3a14ec90456f7eb (diff) | |
| download | linux-056533192a9e04cac5ecd0ac683a1d659cb712ad.tar.xz | |
IB/UMAD: Add umad trace points
Trace MADs going to/from user space.
Suggested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/core/user_mad.c')
| -rw-r--r-- | drivers/infiniband/core/user_mad.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c index 02b7947ab215..2de5b4404abc 100644 --- a/drivers/infiniband/core/user_mad.c +++ b/drivers/infiniband/core/user_mad.c @@ -129,6 +129,9 @@ struct ib_umad_packet { struct ib_user_mad mad; }; +#define CREATE_TRACE_POINTS +#include <trace/events/ib_umad.h> + static const dev_t base_umad_dev = MKDEV(IB_UMAD_MAJOR, IB_UMAD_MINOR_BASE); static const dev_t base_issm_dev = MKDEV(IB_UMAD_MAJOR, IB_UMAD_MINOR_BASE) + IB_UMAD_NUM_FIXED_MINOR; @@ -334,6 +337,9 @@ static ssize_t copy_recv_mad(struct ib_umad_file *file, char __user *buf, return -EFAULT; } } + + trace_ib_umad_read_recv(file, &packet->mad.hdr, &recv_buf->mad->mad_hdr); + return hdr_size(file) + packet->length; } @@ -353,6 +359,9 @@ static ssize_t copy_send_mad(struct ib_umad_file *file, char __user *buf, if (copy_to_user(buf, packet->mad.data, packet->length)) return -EFAULT; + trace_ib_umad_read_send(file, &packet->mad.hdr, + (struct ib_mad_hdr *)&packet->mad.data); + return size; } @@ -508,6 +517,9 @@ static ssize_t ib_umad_write(struct file *filp, const char __user *buf, mutex_lock(&file->mutex); + trace_ib_umad_write(file, &packet->mad.hdr, + (struct ib_mad_hdr *)&packet->mad.data); + agent = __get_agent(file, packet->mad.hdr.id); if (!agent) { ret = -EINVAL; |