Hi, Ping on this issue. Any idea or pointer.
Cheers, Jean On 17 September 2013 14:02, Jean Pihet <[email protected]> wrote: > Hi, > > I am running the perf record and report commands, which are running OK > but I do not get any kernel symbol resolved when using a built and > installed kernel. > Using the distro installed kernel is OK though. > The setup is: Marvell ARMv7 quad core, Linaro Ubuntu release. > > Here are the commands in use: > - perf record -g dwarf -- stress --cpu 2 --io 2 --vm 2 --timeout 1s > - perf report -vvv > > With a vmlinux found at /lib/modules/<version>/build I get the > following in the trace output: > ... > Looking at the vmlinux_path (6 entries long) > Using /lib/modules/3.11.0-00003-g0d4d4a1/build/vmlinux for symbols > ... > dso: [kernel.kallsyms] > (/lib/modules/3.11.0-00003-g0d4d4a1/build/vmlinux, Functions, loaded, > 0000000000000000000000000000000000000000) > c00081c0-c00081c3 g asm_do_IRQ > ... > dso: [kernel.kallsyms].head.text ([kernel.kallsyms], Functions, loaded, > 00000000 > 00000000000000000000000000000000) > c0008000-c0008077 g stext > c0008000-c0008000 g _text > c0008084-c0008127 l __create_page_tables > ... > dso: [kernel.kallsyms].init.text ([kernel.kallsyms], Functions, loaded, > 00000000 > 00000000000000000000000000000000) > c04f3260-c04f32af l __fixup_smp > > > Without any vmlinux found I get the following: > ... > Looking at the vmlinux_path (6 entries long) > Using /proc/kallsyms for symbols > ... > dso: [kernel.kallsyms] ([kernel.kallsyms], Functions, loaded, > 0000000000000000000000000000000000000000) > 0-beffffff l __vectors_start > dso: [kernel.kallsyms] ([kernel.kallsyms], Variables, NOT loaded, > 0000000000000000000000000000000000000000) > dso: stress (/usr/bin/stress, Functions, loaded, > bdf57306ab106fb0ce9835c95dae5b173f238b61) > ... > > > In any case the symbols are not resolved although vmlinux contains > symbols and /proc/kallsyms is accessible and working correctly. > Any idea on where to look at? I guess the problem is in the kernel > installation. > > Thx & regards, > Jean -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
