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Date:   Mon, 24 Aug 2020 18:56:11 -0300
From:   Jason Gunthorpe <jgg@nvidia.com>
To:     Chuck Lever <chuck.lever@oracle.com>
CC:     <linux-rdma@vger.kernel.org>
Subject: Re: [PATCH v3 0/3] IB CM tracepoints
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On Mon, Aug 24, 2020 at 02:24:40PM -0400, Chuck Lever wrote:
> 
> 
> > On Aug 24, 2020, at 1:42 PM, Jason Gunthorpe <jgg@nvidia.com> wrote:
> > 
> > On Mon, Aug 17, 2020 at 09:53:05AM -0400, Chuck Lever wrote:
> >> Oracle has an interest in a common observability infrastructure in
> >> the RDMA core and ULPs. Introduce static tracepoints that can also
> >> be used as hooks for eBPF scripts, replacing infrastructure that
> >> is based on printk. This takes the same approach as tracepoints
> >> added recently in the RDMA CM.
> >> 
> >> Change since v2:
> >> * Rebase on v5.9-rc1
> >> 
> >> Changes since RFC:
> >> * Correct spelling of example tracepoint in patch description
> >> * Newer tool chains don't care for tracepoints with the same name
> >> in different subsystems
> >> * Display ib_cm_events, not ib_events
> > 
> > Doesn't compile:
> > 
> > In file included from drivers/infiniband/core/cm_trace.h:414,
> >                 from drivers/infiniband/core/cm_trace.c:15:
> > ./include/trace/define_trace.h:95:42: fatal error: ./cm_trace.h: No such file or directory
> >   95 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
> >      |                                          ^
> > compilation terminated.
> 
> I am not able to reproduce this failure.
> 
> gcc (GCC) 10.1.1 20200507 (Red Hat 10.1.1-1)

Yep, using gcc 10 too

Start from a clean tree?
 
> What if you edit drivers/infiniband/core/cm_trace.h and
> change the definition of TRACE_INCLUDE_PATH from "." to
> "../../drivers/infiniband/core" ?

It works

It is because ./ is relative to include/trace/define_trace.h ?
 
Jason