[Crash-utility] [PATCH] Skip alternate hz calculation in Linux 4.8+

[lijiang]

在 2021年04月23日 00:00, crash-utility-request at redhat.com 写道:
> Date: Thu, 22 Apr 2021 12:06:29 +0000
> From: "Moore, Martin (Linux ERT)" <martin.moore at hpe.com>
> To: "Discussion list for crash utility usage,	maintenance and
> 	development"	<crash-utility at redhat.com>
> Subject: Re: [Crash-utility] [PATCH] Skip alternate hz calculation in
> 	Linux	4.8+
> Message-ID:
> 	<AT5PR8401MB1300438F403F7A3A9B6A12DC91469 at AT5PR8401MB1300.NAMPRD84.PROD.OUTLOOK.COM>
> 	
> Content-Type: text/plain; charset="us-ascii"
> 
> Hi Kazu,
> 
>> Thank you for the report and patch, there is another discussion about the HZ calculation [1], but anyway I think we should have this patch.
>> Acked-by: Kazuhito Hagio <k-hagio-ab at nec.com>
>> Could I have your Signed-off-by: tag?
> Yes, included below.  Thanks.
> 
> --- task.c.orig 2021-04-14 16:07:52.021137849 -0400
> +++ task.c      2021-04-14 16:11:03.406626370 -0400
> @@ -417,7 +417,8 @@
> 
>         STRUCT_SIZE_INIT(cputime_t, "cputime_t");
> 
> -       if (symbol_exists("cfq_slice_async")) {
> +       if ((THIS_KERNEL_VERSION < LINUX(4,8,0)) &&
> +            symbol_exists("cfq_slice_async")) {
>                 uint cfq_slice_async;
> 
>                 get_symbol_data("cfq_slice_async", sizeof(int),
> 
> Signed-off-by: Martin Moore <martin.moore at hpe.com>

Acked-by: Lianbo Jiang <lijiang at redhat.com>