csky: Add support for perf unwind-libdwThis patch add support for DWARF register mappings and libdw registersinitialization, which is used by perf callchain analyzing, eg:perf record --call-grap
csky: Add support for perf unwind-libdwThis patch add support for DWARF register mappings and libdw registersinitialization, which is used by perf callchain analyzing, eg:perf record --call-graph=dwarf <COMMAND>Here is elfutils csky backend patch set:https://sourceware.org/ml/elfutils-devel/2019-q2/msg00007.htmlSigned-off-by: Mao Han <han_mao@c-sky.com>Signed-off-by: Guo Ren <ren_guo@c-sky.com>Cc: Peter Zijlstra <peterz@infradead.org>Cc: Ingo Molnar <mingo@redhat.com>Cc: Arnaldo Carvalho de Melo <acme@kernel.org>Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>Cc: Jiri Olsa <jolsa@redhat.com>Cc: Namhyung Kim <namhyung@kernel.org>Cc: Arnd Bergmann <arnd@arnd.de>
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