perf: Show Potential probe points.
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From: Arnaldo Carvalho de Melo on 9 Jul 2010 10:20 Em Fri, Jul 09, 2010 at 11:26:44AM +0530, Srikar Dronamraju escreveu: > > > Show all potential probes in a process by pid 21106 across all dsos > > > # perf probe -S -p 21106 | tail > > Again, a file based interface would be much more useful. E.g. what > > possible probe points do I have in my qemu binary. > Right, Currently perf probe needs -p option because it depend on > thread->map_groups for listing the dsos and its functions. > I am not sure if perf already has ability to list functions in a file > esp if we dont have dwarf information in that file. If perf has the > ability I will reuse it here or will try implementing one. > Arnaldo, Do you know offhand if perf already has the ability to list > functions in a file (with / without dwarf info). Definetely, it actually doesn't use DWARF at all, its just the symtabs that are used. It prefers -debuginfo packages because those have richer symtabs, but if just the stripped file is used it will try to use ..dynsym, etc. Look at tools/perf/builtin-test.c, it has a regression test for the symbol lib, should be enough. - Arnaldo -- 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/ |