(2010/12/13 23:21), Arnaldo Carvalho de Melo wrote: > There are two problems here: > > on the 'report' header, as we didn't collect "cycles", but > "probe:icmp_rcv" events, that is another fix that needs to be backported to > fedora, but a minor one. > > Also 'perf probe -L' should look use > /usr/src/debug/kernel-2.6.35.fc14/linux-2.6.35.x86_64 as a prefix to look for > sources. > > That can be found using: > > [r...@felicio linux-2.6.35.x86_64]# readelf -wi > /usr/lib/debug/lib/modules/2.6.35.9-64.fc14.x86_64/vmlinux | grep > DW_AT_comp_dir | head -5 > <2e> DW_AT_comp_dir : > /usr/src/debug////////kernel-2.6.35.fc14/linux-2.6.35.x86_64 > <95> DW_AT_comp_dir : (indirect string, offset: 0x24d0): > /usr/src/debug/kernel-2.6.35.fc14/linux-2.6.35.x86_64 > <75e8> DW_AT_comp_dir : (indirect string, offset: 0x24d0): > /usr/src/debug/kernel-2.6.35.fc14/linux-2.6.35.x86_64 > <900e> DW_AT_comp_dir : (indirect string, offset: 0x24d0): > /usr/src/debug/kernel-2.6.35.fc14/linux-2.6.35.x86_64 > <16670> DW_AT_comp_dir : (indirect string, offset: 0x24d0): > /usr/src/debug/kernel-2.6.35.fc14/linux-2.6.35.x86_64 > [r...@felicio linux-2.6.35.x86_64]# > > <0><8b>: Abbrev Number: 1 (DW_TAG_compile_unit) > <8c> DW_AT_producer : (indirect string, offset: 0x22f4): GNU C 4.5.1 > 20100924 (Red Hat 4.5.1-4) > <90> DW_AT_language : 1 (ANSI C) > <91> DW_AT_name : (indirect string, offset: 0x37a): > arch/x86/kernel/head64.c > <95> DW_AT_comp_dir : (indirect string, offset: 0x24d0): > /usr/src/debug/kernel-2.6.35.fc14/linux-2.6.35.x86_64 > <99> DW_AT_low_pc : 0x0 > <a1> DW_AT_entry_pc : 0x0 > <a9> DW_AT_ranges : 0x340 > <ad> DW_AT_stmt_list : 0x114 > > I.e. using the DW_AT_comp_dir attribute in the DW_TAG_compile_unit DWARF tags, > Masami?
It already supports DW_AT_comp_dir on upstream kernel, see find_line_range() in utils/probe-finder.c ;-) Thank you, -- Masami HIRAMATSU 2nd Dept. Linux Technology Center Hitachi, Ltd., Systems Development Laboratory E-mail: masami.hiramatsu...@hitachi.com -- To unsubscribe from this list: send the line "unsubscribe linux-perf-users" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
