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![Mao Han](https://secure.gravatar.com/avatar/1120c55d6e8d2f6fe19dd7deac12dde3.jpg?s=96&d=mm)
Mao Han committed b4bf274198b
csky: Add perf_arch_fetch_caller_regs support In trace events as tracepoints context are not able to be retrieve with task_pt_regs. Without arch caller regs support the pt_regs context will be all zero, perf can not parsing the callchain and resolving the symbols correctly, some time will even get into deadlock while handling the page fault, eg: perf kmem —page record ls Changelog - Add test case cmd in comment - Use regs_fp(regs) which is defined in abi/regdef.h Signed-off-by: Mao Han <han_mao@c-sky.com> Signed-off-by: Guo Ren <guoren@kernel.org>