Merge branch 'bpf-s390-implement-get_preempt_count'

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Ilya Leoshkevich says:

====================
bpf/s390: Implement get_preempt_count()

This series adds get_preempt_count() BPF implementation for s390.
On s390 preempt_count lives in lowcore: a per-cpu data structure
mapped at virtual address 0 or 0x70000 depending on the kernel
command line.

Patch 1 adds a kfunc to obtain lowcore address.
Patch 2 is the implementation that delegates to it.
====================

Link: https://patch.msgid.link/20260217160813.100855-1-iii@linux.ibm.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Alexei Starovoitov 2026-03-03 08:35:07 -08:00

parent 309d8808ee 0f87614c4d

commit 74fef05ef1

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2

arch/s390/kernel/Makefile

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12

arch/s390/kernel/bpf.c

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3

kernel/bpf/helpers.c

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11

tools/testing/selftests/bpf/bpf_experimental.h

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