linux-kernel - Re: [PATCH 18/31] Add debugger entry points for C6X

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Message-ID: <1455231177.3767.62.camel@redhat.com>
Date:	Thu, 11 Feb 2016 17:52:57 -0500
From:	Mark Salter <msalter@...hat.com>
To:	Jeffrey Merkey <jeffmerkey@...il.com>, linux-kernel@...r.kernel.org
Cc:	a-jacquiot@...com, linux.mdb@...il.com, linux-c6x-dev@...ux-c6x.org
Subject: Re: [PATCH 18/31] Add debugger entry points for C6X

On Thu, 2016-01-28 at 12:47 -0700, Jeffrey Merkey wrote:
> This patch series adds an export which can be set by system debuggers to
> direct the hard lockup and soft lockup detector to trigger a breakpoint
> exception and enter a debugger if one is active.  It is assumed that if
> someone sets this variable, then an breakpoint handler of some sort will
> be actively loaded or registered via the notify die handler chain.
> 
> This addition is extremely useful for debugging hard and soft lockups
> real time and quickly from a console debugger.
> 
> Signed-off-by: Jeffrey Merkey <jeffmerkey@...il.com>
> ---

Acked-by: Mark Salter <msalter@...hat.com>

>  arch/c6x/include/asm/kdebug.h | 4 ++++
>  1 file changed, 4 insertions(+)
>  create mode 100644 arch/c6x/include/asm/kdebug.h
> 
> diff --git a/arch/c6x/include/asm/kdebug.h b/arch/c6x/include/asm/kdebug.h
> new file mode 100644
> index 0000000..5d09de1
> --- /dev/null
> +++ b/arch/c6x/include/asm/kdebug.h
> @@ -0,0 +1,4 @@
> +
> +static inline void arch_breakpoint(void)
> +{
> +}