Bug 23849 - stapbpf script caching
Summary: stapbpf script caching
Status: NEW
Alias: None
Product: systemtap
Classification: Unclassified
Component: bpf (show other bugs)
Version: unspecified
: P2 normal
Target Milestone: ---
Assignee: Unassigned
URL:
Keywords:
Depends on: 22330
Blocks:
  Show dependency tree / graph
 
Reported: 2018-11-01 20:12 UTC by Serhei Makarov
Modified: 2021-10-11 16:10 UTC (History)
1 user (show)

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Description Serhei Makarov 2018-11-01 20:12:50 UTC 
Known issues preventing enabling caching for stapbpf:

- cached module name is very long, current trace_printk() output method must include it in string literals, rapidly exhausting stack space -- depends on PR22330
- current caching code assumes C compilation (e.g. tries to copy nonexistent C file)
Comment 1 Serhei Makarov 2019-07-18 19:36:28 UTC 
note that this is needed to speedup tracepoint querying for pr23866 (since it involves C code generation even with the BPF backend)