Re: [PATCH 5/5] arm64: Remove TIF_NOHZ

[Frederic Weisbecker <frederic@kernel.org>]

On Tue, Feb 18, 2020 at 08:57:09AM +0000, Will Deacon wrote:
> On Fri, Feb 14, 2020 at 04:26:15PM +0100, Frederic Weisbecker wrote:
> > The syscall slow path is spuriously invoked when context tracking is
> > activated while the entry code calls context tracking from fast path.
> > 
> > Remove that overhead and the unused flag itself while at it.
> > 
> > Signed-off-by: Frederic Weisbecker <frederic@kernel.org>
> > Cc: Thomas Gleixner <tglx@linutronix.de>
> > Cc: Ingo Molnar <mingo@redhat.com>
> > Cc: Peter Zijlstra <peterz@infradead.org>
> > Cc: Borislav Petkov <bp@alien8.de>
> > Cc: Catalin Marinas <catalin.marinas@arm.com>
> > Cc: Will Deacon <will@kernel.org>
> > ---
> >  arch/arm64/Kconfig                   | 1 -
> >  arch/arm64/include/asm/thread_info.h | 4 +---
> >  2 files changed, 1 insertion(+), 4 deletions(-)
> 
> Acked-by: Will Deacon <will@kernel.org>
> 
> Do you want this to go via the arm64 tree? It looks like it makes sense
> on its own to me, so I could pick it as a fix.

Thanks Will, unfortunately it depends on some patches on the series, so
the whole needs to go together.