bpf: make test py_test_tools_smoke pass on arm64 #1417
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Changes include:
. Add PT_REGS_FP to access base(FP) register in x64
. Use macros, intead of directly ctx-><reg_name>
in a few places
. Let userspace fill in the value of PAGE_SIZE.
Otherwise, arm64 needs additional headers to
get this value for kernel.
. In tools/wakeuptime.py, arm64 and x86_64 have
the same stack walker mechanism. But they
have different symbol/macro to represent
kernel start address.
With these changes, the test py_test_tools_smoke
can pass on arm64.
Signed-off-by: Yonghong Song <[email protected]>
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Changes include:
. Add PT_REGS_FP to access base(FP) register in x64
. Use macros, intead of directly ctx-><reg_name>
in a few places
. Let userspace fill in the value of PAGE_SIZE.
Otherwise, arm64 needs additional headers to
get this value for kernel.
. In tools/wakeuptime.py, arm64 and x86_64 have
the same stack walker mechanism. But they
have different symbol/macro to represent
kernel start address.
With these changes, the test py_test_tools_smoke
can pass on arm64.
Signed-off-by: Yonghong Song [email protected]