Lines Matching +full:boot +full:- +full:up
11 - Written for: 6.12
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21 $ sudo mount -t tracefs tracefs /sys/kernel/tracing
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61 It can be very useful in knowing what happened up to the point of the crash.
64 the ring buffer will be all the events that lead up to the crash.
76 Note, the tracing buffer is made up of per CPU buffers where each of these
77 buffers is broken up into sub-buffers that are by default PAGE_SIZE. The
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86 following boot. There's two ways to reserve memory for the use of the ring
100 reserved. As the ring buffer is broke up into per CPU buffers, the 12
101 megabytes will be broken up evenly between those CPUs. If you have 8 CPUs,
107 at boot is with the "reserve_mem" option::
112 boot up, and align it by 4096 bytes. It will label this memory as "trace"
119 then the ring buffer will not be from the previous boot and will be reset.
128 On boot up, the memory reserved for the ring buffer is validated. It will go
130 data. If it is, it will then set it up to be available to read from the
139 Using trace_printk() in the boot instance
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145 destination from the kernel command line, or set it after boot up via the
148 After boot up::
157 disable tracing with the "traceoff" flag, and enable tracing after boot up.
158 Otherwise the trace from the most recent boot will be mixed with the trace
159 from the previous boot, and may make it confusing to read.