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(-)
