Merge branch 'bpf-allow-some-trace-helpers-for-all-prog-types'

Feng Yang says:

====================
bpf: Allow some trace helpers for all prog types

From: Feng Yang <[email protected]>

This series allow some trace helpers for all prog types.

if it works under NMI and doesn't use any context-dependent things,
should be fine for any program type. The detailed discussion is in [1].

[1] https://lore.kernel.org/all/CAEf4Bza6gK3dsrTosk6k3oZgtHesNDSrDd8sdeQ-GiS6oJixQg@mail.gmail.com/
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Changes in v3:
- cgroup_current_func_proto clean.
- bpf_scx_get_func_proto clean. Thanks, Andrii Nakryiko.
- Link to v2: https://lore.kernel.org/all/[email protected]/

Changes in v2:
- not expose compat probe read APIs to more program types.
- Remove the prog->sleepable check added for copy_from_user,
- or the summarization_freplace/might_sleep_with_might_sleep test will fail with the error "program of this type cannot use helper bpf_copy_from_user"
- Link to v1: https://lore.kernel.org/all/[email protected]/
====================

Link: https://patch.msgid.link/[email protected]
Signed-off-by: Andrii Nakryiko <[email protected]>

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