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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-05-23 12:28:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-05-23 12:28:01 -0700 |
| commit | d6a326d694e77fd1d90ae40ad3c73a6af0eb1b8d (patch) | |
| tree | 65620f42b46c745e16298f31b45d54b33ec0ebea /drivers/block | |
| parent | bca2a25d3be779fbdf912de8e1ded6dcd483845d (diff) | |
| parent | 2c92ca849fcc6ee7d0c358e9959abc9f58661aea (diff) | |
Merge tag 'trace-assign-str-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing cleanup from Steven Rostedt:
"Remove second argument of __assign_str()
The __assign_str() macro logic of the TRACE_EVENT() macro was
optimized so that it no longer needs the second argument. The
__assign_str() is always matched with __string() field that takes a
field name and the source for that field:
__string(field, source)
The TRACE_EVENT() macro logic will save off the source value and then
use that value to copy into the ring buffer via the __assign_str().
Before commit c1fa617caeb0 ("tracing: Rework __assign_str() and
__string() to not duplicate getting the string"), the __assign_str()
needed the second argument which would perform the same logic as the
__string() source parameter did. Not only would this add overhead, but
it was error prone as if the __assign_str() source produced something
different, it may not have allocated enough for the string in the ring
buffer (as the __string() source was used to determine how much to
allocate)
Now that the __assign_str() just uses the same string that was used in
__string() it no longer needs the source parameter. It can now be
removed"
* tag 'trace-assign-str-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing/treewide: Remove second parameter of __assign_str()
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/rnbd/rnbd-srv-trace.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/block/rnbd/rnbd-srv-trace.h b/drivers/block/rnbd/rnbd-srv-trace.h index 8dedf73bdd28..89d0bcb17195 100644 --- a/drivers/block/rnbd/rnbd-srv-trace.h +++ b/drivers/block/rnbd/rnbd-srv-trace.h @@ -27,7 +27,7 @@ DECLARE_EVENT_CLASS(rnbd_srv_link_class, TP_fast_assign( __entry->qdepth = srv->queue_depth; - __assign_str(sessname, srv->sessname); + __assign_str(sessname); ), TP_printk("sessname: %s qdepth: %d", @@ -85,7 +85,7 @@ TRACE_EVENT(process_rdma, ), TP_fast_assign( - __assign_str(sessname, srv->sessname); + __assign_str(sessname); __entry->dir = id->dir; __entry->ver = srv->ver; __entry->device_id = le32_to_cpu(msg->device_id); @@ -130,7 +130,7 @@ TRACE_EVENT(process_msg_sess_info, __entry->proto_ver = srv->ver; __entry->clt_ver = msg->ver; __entry->srv_ver = RNBD_PROTO_VER_MAJOR; - __assign_str(sessname, srv->sessname); + __assign_str(sessname); ), TP_printk("Session %s using proto-ver %d (clt-ver: %d, srv-ver: %d)", @@ -165,8 +165,8 @@ TRACE_EVENT(process_msg_open, TP_fast_assign( __entry->access_mode = msg->access_mode; - __assign_str(sessname, srv->sessname); - __assign_str(dev_name, msg->dev_name); + __assign_str(sessname); + __assign_str(dev_name); ), TP_printk("Open message received: session='%s' path='%s' access_mode=%s", @@ -189,7 +189,7 @@ TRACE_EVENT(process_msg_close, TP_fast_assign( __entry->device_id = le32_to_cpu(msg->device_id); - __assign_str(sessname, srv->sessname); + __assign_str(sessname); ), TP_printk("Close message received: session='%s' device id='%d'", |