perf probe: Don't compile CFI related code if elfutils is old
in [Kernel]
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From: Stephane Eranian on 18 May 2010 05:50 On Tue, May 18, 2010 at 11:35 AM, Robert Richter <robert.richter(a)amd.com> wrote: > On 17.05.10 21:57:38, tip-bot for Masami Hiramatsu wrote: >> Commit-ID: 7752f1b096e13991f20b59fd11ba73da3809d93c >> Gitweb: http://git.kernel.org/tip/7752f1b096e13991f20b59fd11ba73da3809d93c >> Author: Masami Hiramatsu <mhiramat(a)redhat.com> >> AuthorDate: Mon, 10 May 2010 13:12:07 -0400 >> Committer: Arnaldo Carvalho de Melo <acme(a)redhat.com> >> CommitDate: Mon, 17 May 2010 22:13:51 -0300 >> >> perf probe: Don't compile CFI related code if elfutils is old >> >> Check elfutils version, and if it is old don't compile CFI analysis code. This >> allows to compile perf with old elfutils. >> >> Signed-off-by: Masami Hiramatsu <mhiramat(a)redhat.com> >> Tested-by: Stephane Eranian <eranian(a)google.com> >> Reported-by: Robert Richter <robert.richter(a)amd.com> >> Cc: Ingo Molnar <mingo(a)elte.hu> >> LKML-Reference: <20100510171207.26029.97604.stgit(a)localhost6.localdomain6> >> Signed-off-by: Arnaldo Carvalho de Melo <acme(a)redhat.com> >> --- > > I think this patch is not needed as we came up with an alternative > solution with commit: > > 6b3c4ef perf probe: Check older elfutils and set NO_DWARF > But I am compiling tip, so this patch is in and I still got the problem. It is because the test program does not check for Dwarf_CFI so it assumes you have the right version of libdw. If I understand Masami's patch, you can still compile dwarf support in despite the lack of Dwarf_CFI. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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