One day off on Friday. [2/10]

# Progress # * aarch64 gdb, the number of FAIL is reduced to 26 on aarch64-linux! there are still about 10+ FAILs can be fixed. [4/10] ** TCWG-726, fails in gdb.base/break-interp.exp. Fixed. Remove prelink package from juno board as aarch64 isn't supported. ** TCWG-681, fails in savedregs.exp. Patch is committed. ** PR 18139. Patches are committed.

* arm gdb, 938 fails for -mfloat-abi=soft and 1014 fails for -mfloat-abi=hard. Analysing fails. [2/10]

* GDB kernel-awareness meeting with ST. [1/10] Understand the definition of "kernel-awareness", and will discuss about the design upstreams later.

* TCWG-716, investigate LLDB perf testing. [1/10] Done. ** LLDB already had something about performance testing, in lldb/test/benchmarks/ and lldb/tools/lldb-perf. ** TestCompileRunToBreakpointTurnaround.py compares the speed of LLDB and GDB, but in an incorrect way.

# Plan # * Take more care on arm gdb test fails. * Fix the rest of aarch64 gdb fails.