Le 14/12/2021 à 07:09, Christophe Leroy a écrit :
Le 13/12/2021 à 20:46, Steven Rostedt a écrit :
On Mon, 13 Dec 2021 19:33:47 +0000
Christophe Leroy <christophe.leroy@xxxxxxxxxx> wrote:
STill the same Oops, below
Unfortunately, I don't have a PPC machine (32 nor 64 bit) to help debug
this.
I will look more closely tomorrow.
OK, thanks.
The Oops was due to ftrace_caller() setting the regs argument to NULL.
After fixing that, I'm back into a situation where I get "Testing tracer
function_graph: FAILED!"
Will continue investigating.
trace_selftest_startup_function_graph() calls register_ftrace_direct()
which returns -ENOSUPP because powerpc doesn't select
CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS.
Should TEST_DIRECT_TRAMP depend on CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS ?
Christophe
