Merge branch 'perf-urgent-for-linus' of git://

Pull perf tooling updates from Thomas Gleixner:

 - handle uretprobe placement proper on little endian PPC64

 - fix buffer handling in libtraceevent

 - add a missing pointer derefence in perf probe

 - fix the build of host tools in cross builds

 - fix Intel PT timestamp handling

 - synchronize memcpy, cpufeatures and bpf headers with the kernel headers

 - support for vendor supplied JSON files describing PMU events

 - a new set of tool tips

 - initial work for clang/llvm support

 - address some style issues found by cppcheck

* 'perf-urgent-for-linus' of git:// (35 commits)
  tools build: Add feature detection for g++
  tools build: Support compiling C++ source file
  perf top/report: Add tips about a list option
  perf report/top: Add a tip about system-wide collection from all CPUs
  perf report/top: Add a tip about source line numbers with overhead
  tools: Synchronize tools/include/uapi/linux/bpf.h
  tools: Synchronize tools/arch/x86/include/asm/cpufeatures.h
  perf bench mem: Sync memcpy assembly sources with the kernel
  perf jevents: Fix Intel JSON fixed counter conversions
  tools lib traceevent: Fix kbuffer_read_at_offset()
  perf intel-pt: Fix MTC timestamp calculation for large MTC periods
  perf intel-pt: Fix estimated timestamps for cycle-accurate mode
  perf uretprobe ppc64le: Fix probe location
  perf pmu-events: Add Skylake frontend MSR support
  perf pmu-events: Fix fixed counters on Intel
  perf tools: Make alias matching case-insensitive
  perf tools: Allow period= in perf stat CPU event descriptions.
  perf tools: Add README for info on parsing JSON/map files
  perf list jevents: Add support for event list topics
  perf list: Support long jevents descriptions