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Date: Tue, 11 Aug 2009 09:59:08 +0100 From: "Metzger, Markus T" <markus.t.metzger@...el.com> To: Ingo Molnar <mingo@...e.hu> CC: Peter Zijlstra <a.p.zijlstra@...llo.nl>, "tglx@...utronix.de" <tglx@...utronix.de>, "hpa@...or.com" <hpa@...or.com>, "markus.t.metzger@...il.com" <markus.t.metzger@...il.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Paul Mackerras <paulus@...ba.org> Subject: RE: [PATCH] perf_counter: Fix a race on perf_counter_ctx >-----Original Message----- >From: Metzger, Markus T >Sent: Tuesday, August 11, 2009 8:34 AM >To: 'Ingo Molnar' >Cc: Peter Zijlstra; tglx@...utronix.de; hpa@...or.com; markus.t.metzger@...il.com; linux- >kernel@...r.kernel.org; Paul Mackerras >Subject: RE: [PATCH] perf_counter: Fix a race on perf_counter_ctx > >>-----Original Message----- >>From: Ingo Molnar [mailto:mingo@...e.hu] >>Sent: Monday, August 10, 2009 3:46 PM >>To: Metzger, Markus T >>Cc: Peter Zijlstra; tglx@...utronix.de; hpa@...or.com; markus.t.metzger@...il.com; linux- >>kernel@...r.kernel.org; Paul Mackerras >>Subject: Re: [PATCH] perf_counter: Fix a race on perf_counter_ctx >> >> >>* Metzger, Markus T <markus.t.metzger@...el.com> wrote: >> >>> I've been using some old version of perf. When I try to build the >>> version for the latest -tip, I get the following build error: >>> >>> builtin-annotate.o: In function `print_summary': >>> /home/markus/linux/git-tip/tools/perf/builtin-annotate.c:1211: undefined reference to `rb_first' >>> /home/markus/linux/git-tip/tools/perf/builtin-annotate.c:1223: undefined reference to `rb_next' >>> builtin-annotate.o: In function `insert_source_line': >> >>Weird. How do you build perf? Do you do: >> >> cd tools/perf/ >> make >> >>? does your build directory have the ../../lib/rbtree.c file? > >Yes and yes. The rbtree object file does not seem to be an ELF file (see below). When I have gcc generate an assembly file and generate the object with a separate call to gcc, I can build perf. When I say "perf record -f -e branches -c 1", the kernel hangs. You said that this is working for you? regards, markus. ---- [markus@...pc212 perf]$ gcc --version gcc (GCC) 4.3.2 20081105 (Red Hat 4.3.2-7) Copyright (C) 2008 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. [markus@...pc212 perf]$ file *.o util/*.o builtin-annotate.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped builtin-help.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped builtin-list.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped builtin-record.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped builtin-report.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped builtin-stat.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped builtin-top.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped perf.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/abspath.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/alias.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/callchain.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/color.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/config.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/ctype.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/environment.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/exec_cmd.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/header.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/help.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/levenshtein.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/module.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/pager.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/parse-events.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/parse-options.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/path.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/quote.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/rbtree.o: data util/run-command.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/sigchain.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/strbuf.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/string.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/strlist.o: data util/symbol.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/usage.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/values.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped util/wrapper.o: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), not stripped [markus@...pc212 perf]$ --------------------------------------------------------------------- Intel GmbH Dornacher Strasse 1 85622 Feldkirchen/Muenchen Germany Sitz der Gesellschaft: Feldkirchen bei Muenchen Geschaeftsfuehrer: Douglas Lusk, Peter Gleissner, Hannes Schwaderer Registergericht: Muenchen HRB 47456 Ust.-IdNr. 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