[PATCHv3 bpf-next 0/3] bpf: Get rid of trace_printk_lock

[Jiri Olsa <jolsa@kernel.org>]

hi,
In the last revision Andrii suggested we could have the buffer
provided by bpf_bprintf_prepare [1]. It's bit more changes but
it looks like more compact solution.

v3 changes:
  - added struct to hold return data in bpf_bprintf_prepare
  - fix bug in bpf_bprintf_cleanup
  - adjust printk helpers to use new bpf_bprintf_prepare
    data argument

thanks,
jirka


[1] https://lore.kernel.org/bpf/Y5pgxd9+G2wHROlp@krava/T/#m4b256e9138cdb37cd4477571f32e47a960aad317
---
Jiri Olsa (3):
      bpf: Add struct for bin_args arg in bpf_bprintf_prepare
      bpf: Do cleanup in bpf_bprintf_cleanup only when needed
      bpf: Remove trace_printk_lock

 include/linux/bpf.h      | 12 ++++++++++--
 kernel/bpf/helpers.c     | 67 +++++++++++++++++++++++++++++++++++++++----------------------------
 kernel/bpf/verifier.c    |  3 ++-
 kernel/trace/bpf_trace.c | 56 +++++++++++++++++++++++++++-----------------------------
 4 files changed, 78 insertions(+), 60 deletions(-)