diff options
| author | Naveen N. Rao <[email protected]> | 2018-04-19 12:34:06 +0530 |
|---|---|---|
| committer | Michael Ellerman <[email protected]> | 2018-05-03 22:32:27 +1000 |
| commit | 88b1a8547f4c00e55d54e081fc15e3980debf5c1 (patch) | |
| tree | ef2bec6859a6a8b10db4517ec9d919a119ac7c74 /tools/perf/scripts/python | |
| parent | a4bc64d305af40446d0ac792bb8a9b2cd20af3d3 (diff) | |
powerpc64/kexec: Hard disable ftrace before switching to the new kernel
If function_graph tracer is enabled during kexec, we see the below
exception in the simulator:
root@(none):/# kexec -e
kvm: exiting hardware virtualization
kexec_core: Starting new kernel
[ 19.262020070,5] OPAL: Switch to big-endian OS
kexec: Starting switchover sequence.
Interrupt to 0xC000000000004380 from 0xC000000000004380
** Execution stopped: Continuous Interrupt, Instruction caused exception, **
Now that we have a more effective way to completely disable ftrace on
ppc64, let's also use that before switching to a new kernel during
kexec.
Signed-off-by: Naveen N. Rao <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions