[GIT PULL] tracing/function_graph fixes for 2.6.31

[Frederic Weisbecker <fweisbec@gmail.com>]

On Tue, Jul 28, 2009 at 11:55:32PM +0200, Frederic Weisbecker wrote:
> Ingo, Thomas,
> 
> Those are two fixes for the function graph tracer for .31
> 
> The first one fixes a possible race condition between a function graph trace
> reader and ring buffer writers, leading to a mixup inside an event entry, or
> worst.
> 
> The second one fixes some issues in the output of the function graph tracer
> while using splice on the trace_pipe file or ftrace_dump().
> 
> Both fixes should also be backported on .30 for the -stable branch.
> 
> Thanks,
> Frederic.



(Changing the title with the [GIT PULL] prefix, in case you miss it.)

Thanks.

 
> The following changes since commit 4733fd328f14280900435d9dbae1487d110a4d56:
>   Benjamin Herrenschmidt (1):
>         mm: Remove duplicate definitions in MIPS and SH
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing.git tracing/fixes
> 
> Lai Jiangshan (2):
>       tracing: Fix invalid function_graph entry
>       tracing: Fix missing function_graph events when we splice_read from trace_pipe
> 
>  kernel/trace/trace.c                 |   10 +++++++---
>  kernel/trace/trace_functions_graph.c |   11 +++++++++--
>  2 files changed, 16 insertions(+), 5 deletions(-)