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author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2021-03-25 20:50:01 +0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-14 10:52:47 +0200 |
commit | 8737b781154cf967f8c7aa6a45bbb0c5862304f4 (patch) | |
tree | a018e2803cc76ff5465970a748d00aedd547a0ec /include | |
parent | 5a54afcc73bccd4c31a2c94b00fbb1ad733430ea (diff) |
MIPS/bpf: Enable bpf_probe_read{, str}() on MIPS again
[ Upstream commit 66633abd0642f1e89d26e15f36fb13d3a1c535ff ]
After commit 0ebeea8ca8a4 ("bpf: Restrict bpf_probe_read{, str}() only to
archs where they work"), bpf_probe_read{, str}() functions were no longer
available on MIPS, so there exist some errors when running bpf program:
root@linux:/home/loongson/bcc# python examples/tracing/task_switch.py
bpf: Failed to load program: Invalid argument
[...]
11: (85) call bpf_probe_read#4
unknown func bpf_probe_read#4
[...]
Exception: Failed to load BPF program count_sched: Invalid argument
ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE should be restricted to archs
with non-overlapping address ranges, but they can overlap in EVA mode
on MIPS, so select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE if !EVA in
arch/mips/Kconfig, otherwise the bpf old helper bpf_probe_read() will
not be available.
This is similar with the commit d195b1d1d119 ("powerpc/bpf: Enable
bpf_probe_read{, str}() on powerpc again").
Fixes: 0ebeea8ca8a4 ("bpf: Restrict bpf_probe_read{, str}() only to archs where they work")
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions