Hi Anders,
On 03/06/2019 10:12, Anders Roxell wrote:
> When CONFIG_FUNCTION_GRAPH_TRACER is enabled we end up in this circular
> call trace since function arch_counter_get_cntvct() isn't marked with no
> trace:
>
> [ 17.914934] Call trace:
> [ 17.915211] ftrace_return_to_handler+0x194/0x288
> [ 17.915551] return_to_handler+0x1c/0x38
> [ 17.915855] trace_clock_local+0x38/0x88
> [ 17.916159] function_graph_enter+0xf0/0x258
> [ 17.916465] prepare_ftrace_return+0x60/0x90
> [ 17.916772] ftrace_graph_caller+0x1c/0x24
> [ 17.917093] arch_counter_get_cntvct+0x10/0x30
> [ 17.917417] sched_clock+0x70/0x218
> [ 17.917723] trace_clock_local+0x38/0x88
> [ 17.918026] function_graph_enter+0xf0/0x258
> [ 17.918332] prepare_ftrace_return+0x60/0x90
> [ 17.918649] ftrace_graph_caller+0x1c/0x24
> [ 17.918963] arch_counter_get_cntvct+0x10/0x30
> [ 17.919286] sched_clock+0x70/0x218
>
> Rework so that function arch_counter_get_cntvct() is marked with notrace.
>
> Fixes: 0ea415390cd3 ("clocksource/arm_arch_timer: Use arch_timer_read_counter
> to access stable counters")
> Signed-off-by: Anders Roxell <[email protected]>
This has already been queued by Daniel, I believe [1].
[1]
https://lore.kernel.org/lkml/[email protected]/
Thanks,
M.
--
Jazz is not dead. It just smells funny...
