Allow frag SKBs in PCIe and advertise the maximum number of frags
to the opmode. As a fallback. linearize the SKB if it exceeds the
maximum number of fragments. This allows using the hardware better
(filling more TBs) and should improve performance when used by the
opmode.
Also adjust tracing to be able to deal with this.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Every tracing file must have its own TRACE_SYSTEM defined.
The iwlwifi tracepoint header broke this and added in the middle
of the file:
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iwlwifi_io
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iwlwifi_ucode
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iwlwifi_msg
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iwlwifi_data
#undef TRACE_SYSTEM
#define TRACE_SYSTEM iwlwifi
Unfortunately, this broke new code in the ftrace infrastructure.
Moving each of these TRACE_SYSTEMs into their own trace file with
just one TRACE_SYSTEM per file fixes the issue.
Link: http://lkml.kernel.org/r/1428479094.2809.3.camel@sipsolutions.net
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
