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  1. May 10, 2017
    • Alexey Brodkin's avatar
      perf: Disable perf for ARC770 only, enable for ARC HS38 · 5dc76a42
      Alexey Brodkin authored
      
      Toolchain built for ARCv1 (read for ARC700 cores) by default has
      disabled atomic ops (-mno-atomic). When we build Linux kernel for ARC770
      which has LL/SC instructions and thus may handle normally atomic ops we
      explicitly add "-matomic" in CFLAGS. But since user-space perf utility has
      no way to extract CPU config options from Kconfig/defconfig it uses
      compiler default settings.
      
      In case of ARCv2 (read ARC HS38) atomics are enabled by default and so
      perf builds perfectly fine thus reenabling perf for ARC HS38 (actually
      for non-ARC700 targets).
      
      Signed-off-by: default avatarAlexey Brodkin <Alexey.Brodkin@synopsys.com>
      5dc76a42
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