On Mon, 15 Jun 2020 16:51:30 +0200 Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx> wrote: > I attached a modified acpi_dbg.patch. Please enable: > - CONFIG_ACPI_DEBUG=y > > Looking at your 5.1 you have tracing enabled (hope it still is). > > The attached patch will dump the date into the tracing buffer, so you > console should remain "clean". Once it records 300 of those "requests > for acpi_ev_notify_dispatch" it will stop recording. > After 4-5 minutes please do > cat /sys/kernel/debug/tracing/trace > file.txt > > compress it and send it. I set CONFIG_ACPI_DEBUG=y, applied the patch and rebuilt 5.6.4, but: $ cat /sys/kernel/debug/tracing/trace > trace.txt cat: /sys/kernel/debug/tracing/trace: No such file or directory Here are all the 5.6.4 config options with "TRACING" or "TRACE"; do I need to set any that aren't set? CONFIG_SYSCTL_EXCEPTION_TRACE=y CONFIG_TRACEPOINTS=y CONFIG_STACKTRACE_SUPPORT=y CONFIG_PM_TRACE=y CONFIG_PM_TRACE_RTC=y CONFIG_HAVE_KPROBES_ON_FTRACE=y CONFIG_HAVE_ARCH_TRACEHOOK=y CONFIG_HAVE_RELIABLE_STACKTRACE=y # CONFIG_MAC80211_MESSAGE_TRACING is not set # CONFIG_DMA_FENCE_TRACE is not set CONFIG_IWLWIFI_DEVICE_TRACING=y # CONFIG_TRACE_SINK is not set # HW tracing support # end of HW tracing support CONFIG_STACKTRACE=y CONFIG_RCU_TRACE=y CONFIG_USER_STACKTRACE_SUPPORT=y CONFIG_NOP_TRACER=y CONFIG_HAVE_FUNCTION_TRACER=y CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y CONFIG_HAVE_DYNAMIC_FTRACE=y CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y CONFIG_HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS=y CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y CONFIG_HAVE_SYSCALL_TRACEPOINTS=y CONFIG_TRACE_CLOCK=y CONFIG_EVENT_TRACING=y CONFIG_CONTEXT_SWITCH_TRACER=y CONFIG_TRACING=y CONFIG_GENERIC_TRACER=y CONFIG_TRACING_SUPPORT=y CONFIG_FTRACE=y # CONFIG_BOOTTIME_TRACING is not set # CONFIG_FUNCTION_TRACER is not set # CONFIG_STACK_TRACER is not set # CONFIG_IRQSOFF_TRACER is not set # CONFIG_SCHED_TRACER is not set # CONFIG_HWLAT_TRACER is not set # CONFIG_MMIOTRACE is not set # CONFIG_FTRACE_SYSCALLS is not set # CONFIG_TRACER_SNAPSHOT is not set CONFIG_BLK_DEV_IO_TRACE=y # CONFIG_TRACE_EVENT_INJECT is not set # CONFIG_TRACEPOINT_BENCHMARK is not set # CONFIG_TRACE_EVAL_MAP_FILE is not set # CONFIG_FTRACE_STARTUP_TEST is not set CONFIG_TRACE_IRQFLAGS_SUPPORT=y CONFIG_HAVE_MMIOTRACE_SUPPORT=y CONFIG_CC_HAS_SANCOV_TRACE_PC=y # CONFIG_BACKTRACE_SELF_TEST is not set Steve Berman
