ACK: [PATCH 0/1][GROOVY] ftrace: Fix ftrace_trace_task return value

[Thadeu Lima de Souza Cascardo]

On Thu, Aug 13, 2020 at 05:52:28PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king at canonical.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/1891528
> 
> A couple of ftrace kernel self test regression tests are failing on
> systems with 1 CPU, notably small 1 CPU cloud instances. The two
> tests that are failing are:
> 
> [20] ftrace - function graph filters with stack tracer
> [21] ftrace - function graph filters
> 
> Bisected this down to commit 717e3f5ebc82 ("ftrace: Make function 
> trace pid filtering a bit more exact") in linux 5.6-rc4 and found
> and tested an upstream fix to this issue with the commit
> c58b6b0372de ("ftrace: Fix ftrace_trace_task return value").
> 
> Josef Bacik (1):
>   ftrace: Fix ftrace_trace_task return value
> 
>  kernel/trace/ftrace.c | 3 ---
>  kernel/trace/trace.h  | 7 ++++++-
>  2 files changed, 6 insertions(+), 4 deletions(-)
> 
> -- 
> 2.27.0

Acked-by: Thadeu Lima de Souza Cascardo <cascardo at canonical.com>