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 majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
