[PATCH 15/17] perf, tool: Support for dwarf mode callchain on perf record

This patch enables perf to use the dwarf unwind code. It extends the perf record '-g' option with following arguments: 'fp' - provides framepointer based user stack backtrace 'dwarf[,size]' - provides dwarf (libunwind) based user stack

[PATCH 15/17] perf, tool: Support for dwarf mode callchain on perf record

This patch enables perf to use the dwarf unwind code. It extends the perf record '-g' option with following arguments: 'fp' - provides framepointer based user stack backtrace 'dwarf[,size]' - provides dwarf (libunwind) based user stack