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Date: Thu, 5 Jan 2012 16:04:48 -0800 From: Andrew Morton <akpm@...ux-foundation.org> To: Stephen Rothwell <sfr@...b.auug.org.au> Cc: Steven Rostedt <rostedt@...dmis.org>, Frederic Weisbecker <fweisbec@...il.com>, Ingo Molnar <mingo@...hat.com>, linux-next@...r.kernel.org, linux-kernel@...r.kernel.org, David Miller <davem@...emloft.net> Subject: Re: linux-next: build failure after merge of the final tree On Thu, 5 Jan 2012 19:04:05 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote: > Hi , > > After merging the final tree, today's linux-next build (sparc64 defconfig) > failed like this: > > In file included from include/trace/ftrace.h:567:0, > from include/trace/define_trace.h:86, > from include/trace/events/power.h:240, > from kernel/trace/power-traces.c:14: > include/trace/events/kmem.h: In function 'ftrace_test_probe_kmalloc': > include/trace/events/kmem.h:45:1: error: implicit declaration of function 'check_trace_callback_type_kmalloc' [-Werror=implicit-function-declaration] > include/trace/events/kmem.h: In function 'ftrace_test_probe_kmem_cache_alloc': > > ... > > include/trace/events/kmem.h:267:1: error: implicit declaration of function 'check_trace_callback_type_mm_page_alloc_extfrag' [-Werror=implicit-function-declaration] > In file included from include/trace/ftrace.h:774:0, > from include/trace/define_trace.h:86, > from include/trace/events/power.h:240, > from kernel/trace/power-traces.c:14: > include/trace/events/kmem.h: In function 'perf_test_probe_mm_page_pcpu_drain': > include/trace/events/kmem.h:256:1: error: implicit declaration of function 'check_trace_callback_type_mm_page_pcpu_drain' [-Werror=implicit-function-declaration] > > I have no idea what has gone wrong here, but I did not get this error > yesterday. The only thing that touched include/trace/events/kmem.h is > patch "mm-tracepoint: rename page-free events" from the akpm tree, but > that was there yesterday as well and doesn't look suspicious. Yes, it's not due to anything in the akpm tree. Tracing stuff blew up. > I just have to leave things broken for today in the hope that someone > figures something out. This does not affect my X86_64 allmodconfig build > or my PowerPC builds (including an allyesconfig build). It fails with sparc64 defconfig but succeeds with sparc64 allmodconfig. Some config-dependent thing. 3.2 is OK, so it's something in -next. It could be that some far-off sparc64 Kconfig change is newly triggering this. I suppose I could get off my ass and actually work out why it broke, but the tracing code is too icky. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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