root@firefly:~# echo w > /proc/sysrq-trigger [ 3461.098259] sysrq: SysRq : Show Blocked State [ 3461.099495] Sched Debug Version: v0.11, 4.4.194+ #15 [ 3461.099987] ktime : 3460974.551474 [ 3461.100559] sched_clk : 3461099.486338 [ 3461.101163] cpu_clk : 3461099.486629 [ 3461.101733] ji...
&sysrq_showstate_op, /* t */ &sysrq_mountro_op, /* u */ /* v: May be registered for frame buffer console restore */ NULL, /* v */ &sysrq_showstate_blocked_op, /* w */ /* x: May be registered on ppc/powerpc for xmon */ /* x: May be registered on sparc64 for ...
root@firefly:~#echow>/proc/sysrq-trigger[3461.098259]sysrq: SysRq :ShowBlockedState[3461.099495]Sched Debug Version:v0.11,4.4.194+#15[3461.099987]ktime :3460974.551474[3461.100559]sched_clk :3461099.486338[3461.101163]cpu_clk :3461099.486629[3461.101733]jiffies :4298128273[3461.102303] [3461.102457]sysctl...
root@firefly:~#echow>/proc/sysrq-trigger [3461.098259]sysrq: SysRq :ShowBlockedState [3461.099495]Sched Debug Version:v0.11,4.4.194+#15 [3461.099987]ktime :3460974.551474 [3461.100559]sched_clk :3461099.486338 [3461.101163]cpu_clk :3461099.486629 [3461.101733]jiffies :4298128273 [3461.102303] [3461.10...
root@firefly:~#echow>/proc/sysrq-trigger [3461.098259]sysrq:SysRq:ShowBlockedState [3461.099495]SchedDebugVersion:v0.11,4.4.194+#15 [3461.099987]ktime:3460974.551474 [3461.100559]sched_clk:3461099.486338 [3461.101163]cpu_clk:3461099.486629 [3461.101733]jiffies:4298128273 [3461.102303] [3461.102457]sysctl_...
root@firefly:~# echo t>/proc/sysrq-trigger[3357.426399]sysrq:SysRq:Show State[3357.426902]Call trace:[3357.427155][<ffffff8008085048>]__switch_to+0x94/0xbc[3357.427759][<ffffff8008eee8cc>]__schedule+0x334/0x65c[3357.428249][<ffffff8008eeec64>]schedule+0x70/0x84[3357.428762][<ffffff8008ef...
'w' - Dumps tasks that are in uninterruptable (blocked) state. 'x' - Used by xmon interface on ppc/powerpc platforms. 'y' - Show global CPU Registers [SPARC-64 specific] 'z' - Dump the ftrace buffer '0'-'9' - Sets the console log level, controlling which kernel messages ...
一SysRq的启用与关闭 要想启用SysRq, 需要在配置内核时设置Magic SysRq key (CONFIG_MAGIC_SYSRQ)为Y. 对于支持SysRq的内核, /proc/sys/kernel/sysrq控制SysRq的启用与否. 如果/proc/sys/kernel/sysrq内容为0, 则SysRq被禁用; 如果/proc/sys/kernel/sysrq内容为1, 则SysRq被启用. 关于/proc/sys/kernel...
show-blocked-tasks(w) dump-ftrace-buffer(z) Usageedit SysRq can also be used by writing to/proc/sysrq-trigger. sudo -u root bash echo h > /proc/sysrq-trigger Qubesedit See:add Qubes host key to allow switching virtual console (ctrl + alt + F1) or SysRq for HVM. ...
w Dumps tasks that are in uninterruptable (blocked) state. x Used by xmon interface on ppc/powerpc platforms. Show global PMU Registers on sparc64. Dump all TLB entries on MIPS. y Show global CPU Registers [SPARC-64 specific] z Dump the ftrace buffer 0-9 Sets the console log level,...