This patch set enables perf user stack dump on powerpc Example with "ls" command as user program ./perf record --call-graph=dwarf,8192 ls
./perf script ---------8< ----- .. ... perf 12549 75938.934539: 1771 cycles:ppp: 210d90 .perf_event_exec (/boot/vmlinux) 34b914 .load_elf_binary (/boot/vmlinux) 2dcabc .search_binary_handler (/boot/vmlinux) 2dd6f0 .do_execveat_common.isra.28 (/boot/vmlinux) 2ddcd8 .sys_execve (/boot/vmlinux) 19258 system_call (/boot/vmlinux) perf 12549 75938.934549: 8415 cycles:ppp: 207a88 .perf_event_aux_ctx (/boot/vmlinux) 0 [unknown] ([unknown]) 214ab8 .perf_event_comm (/boot/vmlinux) 2dcfb8 .__set_task_comm (/boot/vmlinux) 2ddb44 .setup_new_exec (/boot/vmlinux) 34b914 .load_elf_binary (/boot/vmlinux) 2dcabc .search_binary_handler (/boot/vmlinux) 2dd6f0 .do_execveat_common.isra.28 (/boot/vmlinux) 2ddcd8 .sys_execve (/boot/vmlinux) 19258 system_call (/boot/vmlinux) ls 12549 75938.934562: 33745 cycles:ppp: ee570 .task_work_add (/boot/vmlinux) 0 [unknown] ([unknown]) 2ce380 .filp_close (/boot/vmlinux) 2fc464 .do_close_on_exec (/boot/vmlinux) 2ddbd8 .setup_new_exec (/boot/vmlinux) 34b914 .load_elf_binary (/boot/vmlinux) 2dcabc .search_binary_handler (/boot/vmlinux) 2dd6f0 .do_execveat_common.isra.28 (/boot/vmlinux) 2ddcd8 .sys_execve (/boot/vmlinux) 19258 system_call (/boot/vmlinux) ls 12549 75938.934587: 116078 cycles:ppp: 6ff94 .__clear_user (/boot/vmlinux) 944400 .padzero ([kernel.vmlinux].text.unlikely) 34bd28 .load_elf_binary (/boot/vmlinux) 2dcabc .search_binary_handler (/boot/vmlinux) 2dd6f0 .do_execveat_common.isra.28 (/boot/vmlinux) 2ddcd8 .sys_execve (/boot/vmlinux) 19258 system_call (/boot/vmlinux) ... .. ----- 8< ----- Chandan Kumar (2): powerpc: Add HAVE_PERF_USER_STACK_DUMP support powerpc/perf: Add support for unwinding perf-stackdump Naveen N. Rao (1): perf tools: Fix perf regs mask generation .../features/perf/perf-regs/arch-support.txt | 2 +- .../features/perf/perf-stackdump/arch-support.txt | 2 +- arch/powerpc/Kconfig | 1 + tools/perf/arch/powerpc/util/Build | 1 + tools/perf/arch/powerpc/util/unwind-libunwind.c | 96 ++++++++++++++++++++++ tools/perf/config/Makefile | 1 + tools/perf/util/perf_regs.c | 8 +- 7 files changed, 105 insertions(+), 6 deletions(-) create mode 100644 tools/perf/arch/powerpc/util/unwind-libunwind.c -- 1.9.3