Hi Anders, thanks for your patch. As mentioned by Mark I already applied this fix from Julien Thierry.
-- Daniel On 03/06/2019 11:23, Marc Zyngier wrote: > 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 <anders.rox...@linaro.org> > > This has already been queued by Daniel, I believe [1]. > > [1] > https://lore.kernel.org/lkml/1558689025-50679-1-git-send-email-julien.thie...@arm.com/ -- <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | <http://twitter.com/#!/linaroorg> Twitter | <http://www.linaro.org/linaro-blog/> Blog