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Date: Mon, 29 Jul 2013 17:24:47 -0300 From: Arnaldo Carvalho de Melo <acme@...stprotocols.net> To: David Ahern <dsahern@...il.com> Cc: linux-kernel@...r.kernel.org Subject: Re: [PATCH] perf tool: Fix symbol offset computation for some dsos Em Sun, Jul 28, 2013 at 09:48:32AM -0600, David Ahern escreveu: > For some dsos (e.g., libc, libpthread, kernel modules) the symbol offset > is huge. e.g., > > qemu-kvm 17238/17242 [007] 762235.640311: > ffffffff816288a1 __schedule+0x451 ([kernel.kallsyms]) > ffffffff81629609 schedule+0x29 ([kernel.kallsyms]) > ffffffffa00a6ded kvm_vcpu_block+0xffffffffa00a106d (/lib/modules/3.11.0-rc1+/kernel/arch/x86/kvm/kvm.ko) > ffffffffa00bae6b kvm_arch_vcpu_ioctl_run+0xffffffffa00a118b (/lib/modules/3.11.0-rc1+/kernel/arch/x86/kvm/kvm.ko) > ffffffffa00a4d7a kvm_vcpu_ioctl+0xffffffffa00a141a (/lib/modules/3.11.0-rc1+/kernel/arch/x86/kvm/kvm.ko) > ffffffff811a7bdb do_vfs_ioctl+0x8b ([kernel.kallsyms]) > ffffffff811a80c1 sys_ioctl+0x91 ([kernel.kallsyms]) > ffffffff81633182 system_call+0x72 ([kernel.kallsyms]) > 7f882a97af27 __GI___ioctl+0x7f882a891007 (/lib64/libc-2.14.90.so) > 100000002 [unknown] ([unknown]) > > It seems to be maps with a non-0 start. Taking that into account the > offsets are correct: Humm, first reaction is that this should be solved by using one of the ->map/->unmap methods, no? - Arnaldo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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