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authorPaolo Bonzini <pbonzini@redhat.com>2017-06-01 13:24:41 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2017-06-21 17:35:42 +0300
commita7f0fda085870312ab694b19a1304ece161a1217 (patch)
treeb6da5d55cc6c2da01360643a6d5a1faad3a3c21a /tools/perf/Makefile.config
parentdaefd0bc0bd28cea2e6b2f3e1a9da005cd4f58fc (diff)
downloadlinux-a7f0fda085870312ab694b19a1304ece161a1217.tar.xz
perf unwind: Support for powerpc
Porting PPC to libdw only needs an architecture-specific hook to move the register state from perf to libdw. The ARM and x86 architectures already use libdw, and it is useful to have as much common code for the unwinder as possible. Mark Wielaard has contributed a frame-based unwinder to libdw, so that unwinding works even for binaries that do not have CFI information. In addition, libunwind is always preferred to libdw by the build machinery so this cannot introduce regressions on machines that have both libunwind and libdw installed. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Milian Wolff <milian.wolff@kdab.com> Acked-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/1496312681-20133-1-git-send-email-pbonzini@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Makefile.config')
-rw-r--r--tools/perf/Makefile.config2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index 1f4fbc9a3292..bdf0e87f9b29 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -61,7 +61,7 @@ endif
# Disable it on all other architectures in case libdw unwind
# support is detected in system. Add supported architectures
# to the check.
-ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm))
+ifneq ($(SRCARCH),$(filter $(SRCARCH),x86 arm powerpc))
NO_LIBDW_DWARF_UNWIND := 1
endif