On Fri, 24 Aug 2018 13:32:06 +1000 Stephen Rothwell <s...@canb.auug.org.au> wrote:
> Hi all, > > After merging the origin tree, today's linux-next build (powerpc > allyesconfig) produced these warnings: > > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_selftest_dynamic.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_kprobe_selftest.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_clock.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/ftrace.o' being > placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/ring_buffer.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/ring_buffer_benchmark.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace.o' being > placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_output.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_seq.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_stat.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_printk.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/tracing_map.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_sched_switch.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_functions.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_preemptirq.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_irqsoff.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_sched_wakeup.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_hwlat.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_nop.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_stack.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_functions_graph.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/blktrace.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_events.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_export.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_syscalls.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_event_perf.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_events_filter.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_events_trigger.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_events_hist.o' being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/bpf_trace.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_kprobe.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/power-traces.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/rpm-traces.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_kdb.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_probe.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from `kernel/trace/trace_uprobe.o' > being placed in section `.data..LPBX1' > ld: warning: orphan section `.data..LPBX1' from > `kernel/trace/trace_benchmark.o' being placed in section `.data..LPBX1' > > Maybe introduced by commit > > 6b7dca401cb1 ("tracing: Allow gcov profiling on only ftrace subsystem") > > I am guessing, but that is the only new thing that affects all of > kernel/trace ... Yes, I agree. But I just followed Documentation/dev-tools/gcov.rst to enable profiling in kernel/trace. Hmm, doesn't ppc64 support GCOV_PROFILE? (But as far as I can see, ARCH_HAS_GCOV_PROFILE_ALL is enabled in arch/powerpc/Kconfig) Anyway, I'll try to reproduce it. Thanks, -- Masami Hiramatsu <mhira...@kernel.org>