The rest of the ftrace tool framework is much more involved. There are ways to trace latency. The ftrace infrastructure created the static trace events which even perf utilizes, in which there are over a 1,000 in the current Linux kernel and more being added every day. The static trace ev...
or use some other mechanism (such assystemd timers), to have the updates run. Live kernel patching just prevents the need for a reboot. An effective cron job can be a simple one-line script with the required update command, but it's up to you to schedule it. I recommend doing it ...
Is it possible to display or retrieve ftrace data from the kernel crash dump? What is the use of the crash extensiontrace? Resolution Ifftracefunctionality was enabled on the system while collecting the kernel crash dump then thecrashextensiontracecan be used to display or retrieve ftrace data f...
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During guest launch, we can use theftrace utilityto display the inhibit reasons using thekvm_apicv_inhibit_changedtracepoint: Copy code snippet Copied to Clipboard Error: Could not Copy Copied to Clipboard Error: Could not Copy qemu-kvm-1661305 [141] ... 429704.679440: kvm_apicv_inhibit_chang...
i tried to use this command but it is not recognized ! did you mean it this way ? dd if="/dev/mmcblk2" | dd of=backup_image.img bs=100M you might have miss located the double quotates ! and the image was still trying to save on the SBC itself and not on the linux pc ...
cost Cortex A53 development boards, 64-bit ARM hardware is now pretty common and inexpensive, but if you want to run 64-bit ARM code on your x86 Linux computer, Riku Voipio, a software engineer working for Linaro, wrote some instructions to run Ubuntu 16.04 Aarc...
开启需要我们写一个内核model,call register_wide_hw_breakpoint API,当然,Linux的sample中也有例子是可以直接用的。 地址如下:https://code.woboq.org/linux/linux/samples/hw_breakpoint/data_breakpoint.c.html code如下: /** data_breakpoint.c - Sample HW Breakpoint file to watch kernel data address ...
│ BPF_MAP_TYPE_SOCKMAP provides a map type to use with network sockets. │ │ It can be used to enforce socket policy, implement socket redirects, │ │ etc. │ │ │ │ Symbol: BPF_STREAM_PARSER [=n] │ │ Type : bool │ ...
#ifdef CONFIG_FTRACE_SYSCALLS #define __SC_STR_ADECL(t, a) #a 18 changes: 2 additions & 16 deletions 18 mm/fadvise.c Original file line numberDiff line numberDiff line change @@ -25,7 +25,7 @@ * POSIX_FADV_WILLNEED could set PG_Referenced, and POSIX_FADV_NOREUSE could * dea...