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    SubjectRe: [PATCH] tee: optee: add invoke_fn tracepoints
    On Wed, 24 Mar 2021 07:48:53 -0700
    Guenter Roeck <linux@roeck-us.net> wrote:

    > On Wed, Mar 24, 2021 at 07:34:07AM -0700, Guenter Roeck wrote:
    > > On Wed, Feb 10, 2021 at 02:44:09PM +0800, Jisheng Zhang wrote:
    > > > Add tracepoints to retrieve information about the invoke_fn. This would
    > > > help to measure how many invoke_fn are triggered and how long it takes
    > > > to complete one invoke_fn call.
    > > >
    > > > Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
    > >
    > > arm64:defconfig:
    > >
    > > make-arm64 -j drivers/tee/optee/call.o
    > > CALL scripts/atomic/check-atomics.sh
    > > CALL scripts/checksyscalls.sh
    > > CC drivers/tee/optee/call.o
    > > In file included from drivers/tee/optee/optee_trace.h:67,
    > > from drivers/tee/optee/call.c:18:
    > > ./include/trace/define_trace.h:95:42: fatal error: ./optee_trace.h: No such file or directory
    > > 95 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
    > > | ^
    > > compilation terminated.
    > >
    >
    > The problem also affects arm:imx_v6_v7_defconfig.
    >

    I think it affects everything. The problem is that the
    drivers/tee/optee/Makefile needs to be updated with:

    CFLAGS_call.o := -I$(src)

    otherwise the compiler wont know how to find the path to optee_tree.h.

    This is described in:

    samples/trace_events/Makefile

    -- Steve

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