Thread (13 messages) 13 messages, 3 authors, 2025-07-21

Re: [PATCH v1 2/7] bpf: Add bpf_perf_event_aux_pause kfunc

From: Eduard Zingerman <eddyz87@gmail.com>
Date: 2025-07-21 22:32:41
Also in: bpf, linux-perf-users, lkml

On Fri, 2025-07-18 at 16:38 +0100, Leo Yan wrote:

[...]
Just clarify one thing, I defined the kfunc in new patch:

  int bpf_perf_event_aux_pause(void *p__map, u64 flags, u32 pause)

Unlike your suggestion, I defined the first parameter as "void
*p__map" (I refers to bpf_arena_alloc_pages()) rather than
"struct bpf_map *map". This is because the BPF program will pass a
variable from the map section, rather than passing a map pointer.
This is correct,
see commit 8d94f1357c00 ("bpf: Recognize '__map' suffix in kfunc arguments")

[...]
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