Dear Linux folks,
I am trying to reduce the boot time of a standard Linux distribution
kernel. Currently, distributions – at least Debian und Ubuntu – enable
function tracing.
```
CONFIG_FTRACE=y
CONFIG_FUNCTION_TRACER=y
CONFIG_FUNCTION_GRAPH_TRACER=y
CONFIG_EVENT_TRACING=y
```
This is great, as it makes it easy to use tracing to hunt down things
holding up the boot. But it also skews the boot time quite a lot.
```
$ sudo dmesg
[…]
[ 0.318412] initcall init_graph_trace+0x0/0x64 returned 0 after
199218 usecs
[…]
[ 1.770287] calling event_trace_init+0x0/0x2c2 @ 1
[ 2.052871] initcall event_trace_init+0x0/0x2c2 returned 0 after
275942 usecs
[…]
```
Is there a way to disable tracing on the Linux kernel command line to
disable tracing?
Kind regards,
Paul
