[PATCH][GIT PULL] tracing: Add __used annotation to event variable
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From: Steven Rostedt on 25 May 2010 09:40 Ingo, This fixes the warning/error on PowerPC. Please pull the latest tip/perf/core tree, which can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git tip/perf/core Steven Rostedt (1): tracing: Add __used annotation to event variable ---- include/trace/ftrace.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) --------------------------- commit 49c177461bfbedeccbab22bf3905db2f9da7f1c3 Author: Steven Rostedt <srostedt(a)redhat.com> Date: Tue May 25 06:19:35 2010 -0700 tracing: Add __used annotation to event variable The TRACE_EVENT() macros automate creation of trace events. To automate initialization, the set up variables are loaded in a special section that is read on boot up. GCC is not aware that these static variables are used and will complain about them if we do not inform GCC that they are indeed used. One of the declarations of the event element was missing a __used annotation. This patch adds it. Reported-by: Ingo Molnar <mingo(a)elte.hu> Signed-off-by: Steven Rostedt <rostedt(a)goodmis.org> diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index 0152b86..34bead7 100644 --- a/include/trace/ftrace.h +++ b/include/trace/ftrace.h @@ -68,7 +68,7 @@ #undef DEFINE_EVENT #define DEFINE_EVENT(template, name, proto, args) \ - static struct ftrace_event_call \ + static struct ftrace_event_call __used \ __attribute__((__aligned__(4))) event_##name #undef DEFINE_EVENT_PRINT -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |