[PATCH]powerpc/xive: Export XIVE IPI information for online-only processors.

[PATCH]powerpc/xive: Export XIVE IPI information for online-only processors.

[Sachin Sant]

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Cédric pointed out that XIVE IPI information exported via sysfs
(debug/powerpc/xive) display empty lines for processors which are
not online.

Switch to using for_each_online_cpu() so that information is
displayed for online-only processors.

Reported-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Sachin Sant <sachinp@linux.ibm.com>
--- 
diff -Naurp a/arch/p werpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c
--- a/arch/powerpc/sysdev/xive/common.c	2022-01-05 08:52:59.460118219 -0500
+++ b/arch/powerpc/sysdev/xive/common.c	2022-01-06 02:34:20.994513145 -0500
@@ -1791,7 +1791,7 @@ static int xive_ipi_debug_show(struct se
 	if (xive_ops->debug_show)
 		xive_ops->debug_show(m, private);
 
-	for_each_possible_cpu(cpu)
+	for_each_online_cpu(cpu)
 		xive_debug_show_ipi(m, cpu);
 	return 0;
 }

Re: [PATCH]powerpc/xive: Export XIVE IPI information for online-only processors.

[Cédric Le Goater]

On 1/6/22 12:03, Sachin Sant wrote:
> Cédric pointed out that XIVE IPI information exported via sysfs
> (debug/powerpc/xive) display empty lines for processors which are
> not online.
> 
> Switch to using for_each_online_cpu() so that information is
> displayed for online-only processors.
> 
> Reported-by: Cédric Le Goater <clg@kaod.org>
> Signed-off-by: Sachin Sant <sachinp@linux.ibm.com>

Reviewed-by: Cédric Le Goater <clg@kaod.org>

Thanks,

C.

> ---
> diff -Naurp a/arch/p werpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c
> --- a/arch/powerpc/sysdev/xive/common.c	2022-01-05 08:52:59.460118219 -0500
> +++ b/arch/powerpc/sysdev/xive/common.c	2022-01-06 02:34:20.994513145 -0500
> @@ -1791,7 +1791,7 @@ static int xive_ipi_debug_show(struct se
>   	if (xive_ops->debug_show)
>   		xive_ops->debug_show(m, private);
>   
> -	for_each_possible_cpu(cpu)
> +	for_each_online_cpu(cpu)
>   		xive_debug_show_ipi(m, cpu);
>   	return 0;
>   }
> 

Re: [PATCH]powerpc/xive: Export XIVE IPI information for online-only processors.

[Michael Ellerman]

On Thu, 06 Jan 2022 16:33:53 +0530, Sachin Sant wrote:
> Cédric pointed out that XIVE IPI information exported via sysfs
> (debug/powerpc/xive) display empty lines for processors which are
> not online.
> 
> Switch to using for_each_online_cpu() so that information is
> displayed for online-only processors.
> 
> [...]

Applied to powerpc/next.

[1/1] powerpc/xive: Export XIVE IPI information for online-only processors.
      https://git.kernel.org/powerpc/c/279d1a72c0f8021520f68ddb0a1346ff9ba1ea8c

cheers