From: Michael Ellerman <michael@ellerman.id.au>
To: Gavin Shan <shangw@linux.vnet.ibm.com>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH 03/21] ppc/eeh: more logs for EEH initialization
Date: Thu, 28 Jun 2012 09:45:34 +1000 [thread overview]
Message-ID: <1340840734.23635.8.camel@concordia> (raw)
In-Reply-To: <1340812911-6793-4-git-send-email-shangw@linux.vnet.ibm.com>
On Thu, 2012-06-28 at 00:01 +0800, Gavin Shan wrote:
> The patch adds more logs to EEH initialization functions for
> debugging purpose. Also, the machine type ("pSeries") is checked
> in the platform initialization to assure it's the correct platform
> to invoke it.
Hi Gavin,
Our boot logs are full enough. pr_info() is not right for this sort of
stuff.
For debug use:
* pr_debug() - which can be enabled dynamically.
* pr_devel() - which needs to be built with #define DEBUG
* printk(KERN_DEBUG) - for things you always want printed, but
needn't go to the console by default.
> diff --git a/arch/powerpc/platforms/pseries/eeh_dev.c b/arch/powerpc/platforms/pseries/eeh_dev.c
> index 8e3443b..a0cee3a 100644
> --- a/arch/powerpc/platforms/pseries/eeh_dev.c
> +++ b/arch/powerpc/platforms/pseries/eeh_dev.c
> @@ -100,6 +100,8 @@ static int __init eeh_dev_phb_init(void)
> list_for_each_entry_safe(phb, tmp, &hose_list, list_node)
> eeh_dev_phb_init_dynamic(phb);
>
> + pr_info("EEH: devices created\n");
That's not actually very informative.
> diff --git a/arch/powerpc/platforms/pseries/eeh_pseries.c b/arch/powerpc/platforms/pseries/eeh_pseries.c
> index bcf0bb8..bb2bd90 100644
> --- a/arch/powerpc/platforms/pseries/eeh_pseries.c
> +++ b/arch/powerpc/platforms/pseries/eeh_pseries.c
> @@ -561,7 +561,18 @@ static struct eeh_ops pseries_eeh_ops = {
> */
> static int __init eeh_pseries_init(void)
> {
> - return eeh_ops_register(&pseries_eeh_ops);
> + int ret = -EINVAL;
> +
> + if (!machine_is(pseries))
> + return ret;
> +
> + ret = eeh_ops_register(&pseries_eeh_ops);
> + if (!ret)
> + pr_info("EEH: pSeries platform initialized\n");
> + else
> + pr_info("EEH: pSeries platform initialization failure\n");
> +
> + return ret;
> }
>
> early_initcall(eeh_pseries_init);
You can achieve the same with initcall_debug.
But if you want to keep it at least print the return code, that's the
first thing you will want to know if it fails.
cheers
next prev parent reply other threads:[~2012-06-27 23:45 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-27 16:01 [PATCH V2 00/16] powerpc/eeh: PE support Gavin Shan
2012-06-27 16:01 ` [PATCH 01/21] ppc/eeh: move EEH initialization around Gavin Shan
2012-06-27 16:01 ` [PATCH 02/21] ppc/eeh: use slab to allocate eeh devices Gavin Shan
2012-06-27 16:01 ` [PATCH 03/21] ppc/eeh: more logs for EEH initialization Gavin Shan
2012-06-27 23:45 ` Michael Ellerman [this message]
2012-06-28 2:40 ` Gavin Shan
2012-06-27 16:01 ` [PATCH 04/21] ppc/eeh: Introduce eeh_pe struct Gavin Shan
2012-06-27 16:01 ` [PATCH 05/21] ppc/eeh: introduce global mutex Gavin Shan
2012-06-27 16:01 ` [PATCH 06/21] ppc/eeh: Create PEs for PHBs Gavin Shan
2012-06-27 16:01 ` [PATCH 07/21] ppc/eeh: Search PE based on requirement Gavin Shan
2012-06-27 16:01 ` [PATCH 08/21] ppc/eeh: create PEs duing EEH initialization Gavin Shan
2012-06-27 16:01 ` [PATCH 09/21] ppc/eeh: remove PE at appropriate time Gavin Shan
2012-06-27 16:01 ` [PATCH 10/21] ppc/eeh: build EEH event based on PE Gavin Shan
2012-06-27 16:01 ` [PATCH 11/21] ppc/eeh: trace EEH state " Gavin Shan
2012-06-27 16:01 ` [PATCH 12/21] ppc/eeh: trace error based on PE from beginning Gavin Shan
2012-06-27 16:01 ` [PATCH 13/21] ppc/eeh: eeh options based on PE Gavin Shan
2012-06-27 16:01 ` [PATCH 14/21] ppc/eeh: device bars restore " Gavin Shan
2012-06-27 16:01 ` [PATCH 15/21] ppc/eeh: I/O enable and log retrival " Gavin Shan
2012-06-27 16:01 ` [PATCH 16/21] ppc/eeh: do reset " Gavin Shan
2012-06-27 16:01 ` [PATCH 17/21] ppc/eeh: make EEH handler PE sensitive Gavin Shan
2012-06-27 16:01 ` [PATCH 18/21] ppc/eeh: handle EEH error based on PE Gavin Shan
2012-06-27 16:01 ` [PATCH 19/21] ppc/eeh: move stats to PE Gavin Shan
2012-06-27 16:01 ` [PATCH 20/21] ppc/eeh: probe mode support Gavin Shan
2012-06-27 16:01 ` [PATCH 21/21] ppc/eeh: trace eeh device from I/O cache Gavin Shan
2012-06-27 16:05 ` [PATCH V2 00/16] powerpc/eeh: PE support Gavin Shan
-- strict thread matches above, loose matches on Subject: below --
2012-09-05 6:14 [PATCH 00/21 V3] " Gavin Shan
2012-09-05 6:14 ` [PATCH 03/21] ppc/eeh: more logs for EEH initialization Gavin Shan
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