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authorTiezhu Yang <yangtiezhu@loongson.cn>2021-03-25 20:50:01 +0800
committerThomas Bogendoerfer <tsbogend@alpha.franken.de>2021-03-29 11:17:09 +0200
commit66633abd0642f1e89d26e15f36fb13d3a1c535ff (patch)
treec444f05dd91665a6d098af42458e536eb7031132 /tools/perf/scripts/python/export-to-postgresql.py
parentMIPS: loongson64: fix bug when PAGE_SIZE > 16KB (diff)
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MIPS/bpf: Enable bpf_probe_read{, str}() on MIPS again
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>
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