ftrace: clean ups and fixes
Status from this message: i've merged them to tip/tracing/urgent, thanks Steve. There were a
Get series with b4
b4 am [email protected]Versions newest first · linked by author and title
- v3 Latest12 patches 1 replyApplied
- v213 patches 9 repliesSuperseded
- v111 patches 22 repliesSuperseded
Patches in v3 Applied
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/12 | ftrace: handle generic arch callsscripts/ scripts/ | +18 | 0 replies | |
| 2/12 | ftrace: dynamic ftrace process only text sectionscripts/ | +14 | 0 replies | |
| 3/12 | ftrace: return error on failed modified text.arch/ include/ kernel/ | +44 | 0 replies | |
| 4/12 | ftrace: comment arch ftrace codearch/ | +6 | 0 replies | |
| 5/12 | ftrace: use probe_kernelarch/ | +3 | 0 replies | |
| 6/12 | ftrace: only have ftrace_kill atomicinclude/ kernel/ kernel/ | +4 | 0 replies | |
| 7/12 | ftrace: add ftrace warn on to disable ftracekernel/ | +19 | 0 replies | |
| 8/12 | ftrace: disable dynamic ftrace for all archs that use daemonarch/ arch/ arch/ | +0 | 0 replies | |
| 9/12 | ftrace: remove daemonkernel/ kernel/ | +28 | 0 replies | |
| 10/12 | ftrace: remove mcount setarch/ arch/ arch/ +3 more | +0 | 0 replies | |
| 11/12 | ftrace: remove ftrace hashinclude/ kernel/ kernel/ | +40 | 0 replies | |
| 12/12 | ftrace: remove notrace from arch ftrace filearch/ arch/ arch/ +2 more | +17 | 0 replies |
Reviews trailers per patch
No Reviewed-by, Acked-by or Tested-by trailers for v3 yet.
Cover letter [PATCH 00/12 v3] ftrace: clean ups and fixes
[
Changes since v2:
Typo corrections suggested by Wenji Huang.
Removed adding notrace to init sections. Right now it should not be an issue. If we deem that it is, we can add the patch later. It's a performance patch, but I have yet to measure if the improvement is even measurable.
]
This is a series of patches to make ftrace more robust and clean ups.
The first couple of patches fix the recordmount.pl script and changes it to only record the .text section functions. This means that the init sections will not be processed.
A FTRACE_WARN_ON is added to change all WARN_ONS to not only print a warning, but also to disable ftrace as well.
The later patches are a bit more drastic. Since the daemon is error prone, I stripped it out. In doing so, I have to disable dynamic ftrace from all archs that use it. The archs can get dynamic ftrace reenabled when they are ported to the recordmcount.pl method. (Arch maintainers, please contact me if you want help. I can do it with some information about your arch).
Since the hash was created to work with the daemon, that too was stripped out, making the remaining code smaller and cleaner. The kprobe hooks in ftrace may need to be reworked.
Thanks goes to Andrew Morton for his comments on the code as well as the spelling corrections made by Wenji Huang.
-- Steve