From: Benjamin Block <bblock@linux.ibm.com>
To: Bart Van Assche <bvanassche@acm.org>
Cc: Steffen Maier <maier@linux.ibm.com>,
jwi@linux.ibm.com, martin.petersen@oracle.com,
jejb@linux.ibm.com, linux-scsi@vger.kernel.org,
gregkh@linuxfoundation.org, linux-next@vger.kernel.org,
linux-s390@vger.kernel.org
Subject: Re: [PATCH v3] scsi: core: Fix early registration of sysfs attributes for scsi_device
Date: Fri, 29 Oct 2021 19:55:40 +0200 [thread overview]
Message-ID: <YXw1nMzFwE9Ud7ch@t480-pf1aa2c2.linux.ibm.com> (raw)
In-Reply-To: <ab1a9bfd-c1d2-e101-a9f3-f969ed3d1cad@acm.org>
On Tue, Oct 26, 2021 at 02:48:55PM -0700, Bart Van Assche wrote:
> On 10/26/21 3:00 AM, Benjamin Block wrote:
> > Hmm, maybe this is out of scope for this fix, but couldn't we
> > essentially do the same thing for the host attributes. Have the
> > `shost_class` take the `scsi_shost_attr_group` as default attributes for
> > the shost class, and then assign the `shost_groups` from the LLDD
> > template to `shost_dev.groups` as optional attributes?
> >
> > Then we get rid of the indirection loop in `hosts.c` as well, that was
> > introduce with he original patch by Bart.
> >
> > Just a shot in the dark, I don't know whether the `struct class` behaves
> > the same in this case as `struct device_type`.
>
> Is something like this what you have in mind?
Yes, exactly. That's what I meant. That make host and dev similar again.
I just wasn't really sure whether `.dev_groups` in class behaves the
same as with what Steffen did. From the documentation it does though.
>
> Thanks,
>
> Bart.
>
>
> Subject: [PATCH] scsi: core: Remove Scsi_Host.shost_dev_attr_groups
>
> Suggested-by: Benjamin Block <bblock@linux.ibm.com>
> Signed-off-by: Bart Van Assche <bvanassche@acm.org>
> ---
> drivers/scsi/hosts.c | 15 +++------------
> drivers/scsi/scsi_priv.h | 2 +-
> drivers/scsi/scsi_sysfs.c | 7 ++++++-
> include/scsi/scsi_host.h | 6 ------
> 4 files changed, 10 insertions(+), 20 deletions(-)
>
> diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
> index 17aef936bc90..f88e7ed77dbb 100644
> --- a/drivers/scsi/hosts.c
> +++ b/drivers/scsi/hosts.c
> @@ -61,6 +61,7 @@ static void scsi_host_cls_release(struct device *dev)
> static struct class shost_class = {
> .name = "scsi_host",
> .dev_release = scsi_host_cls_release,
> + .dev_groups = scsi_shost_groups,
> };
>
> /**
> @@ -376,7 +377,7 @@ static struct device_type scsi_host_type = {
> struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
> {
> struct Scsi_Host *shost;
> - int index, i, j = 0;
> + int index;
>
> shost = kzalloc(sizeof(struct Scsi_Host) + privsize, GFP_KERNEL);
> if (!shost)
> @@ -481,17 +482,7 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
> shost->shost_dev.parent = &shost->shost_gendev;
> shost->shost_dev.class = &shost_class;
> dev_set_name(&shost->shost_dev, "host%d", shost->host_no);
> - shost->shost_dev.groups = shost->shost_dev_attr_groups;
> - shost->shost_dev_attr_groups[j++] = &scsi_shost_attr_group;
> - if (sht->shost_groups) {
> - for (i = 0; sht->shost_groups[i] &&
> - j < ARRAY_SIZE(shost->shost_dev_attr_groups);
> - i++, j++) {
> - shost->shost_dev_attr_groups[j] =
> - sht->shost_groups[i];
> - }
> - }
> - WARN_ON_ONCE(j >= ARRAY_SIZE(shost->shost_dev_attr_groups));
> + shost->shost_dev.groups = sht->shost_groups;
>
> shost->ehandler = kthread_run(scsi_error_handler, shost,
> "scsi_eh_%d", shost->host_no);
> diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h
> index a278fc8948f4..0f5743f4769b 100644
> --- a/drivers/scsi/scsi_priv.h
> +++ b/drivers/scsi/scsi_priv.h
> @@ -144,7 +144,7 @@ extern struct scsi_transport_template blank_transport_template;
> extern void __scsi_remove_device(struct scsi_device *);
>
> extern struct bus_type scsi_bus_type;
> -extern const struct attribute_group scsi_shost_attr_group;
> +extern const struct attribute_group *scsi_shost_groups[];
>
> /* scsi_netlink.c */
> #ifdef CONFIG_SCSI_NETLINK
> diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
> index c26f0e29e8cd..f360154b5241 100644
> --- a/drivers/scsi/scsi_sysfs.c
> +++ b/drivers/scsi/scsi_sysfs.c
> @@ -424,10 +424,15 @@ static struct attribute *scsi_sysfs_shost_attrs[] = {
> NULL
> };
>
> -const struct attribute_group scsi_shost_attr_group = {
> +static const struct attribute_group scsi_shost_attr_group = {
> .attrs = scsi_sysfs_shost_attrs,
> };
>
> +const struct attribute_group *scsi_shost_groups[] = {
> + &scsi_shost_attr_group,
> + NULL
> +};
> +
> static void scsi_device_cls_release(struct device *class_dev)
> {
> struct scsi_device *sdev;
> diff --git a/include/scsi/scsi_host.h b/include/scsi/scsi_host.h
> index ae715959f886..97cdad14de56 100644
> --- a/include/scsi/scsi_host.h
> +++ b/include/scsi/scsi_host.h
> @@ -690,12 +690,6 @@ struct Scsi_Host {
>
> /* ldm bits */
> struct device shost_gendev, shost_dev;
> - /*
> - * The array size 3 provides space for one attribute group defined by
> - * the SCSI core, one attribute group defined by the SCSI LLD and one
> - * terminating NULL pointer.
> - */
> - const struct attribute_group *shost_dev_attr_groups[3];
>
> /*
> * Points to the transport data (if any) which is allocated
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
--
Best Regards, Benjamin Block / Linux on IBM Z Kernel Development / IBM Systems
IBM Deutschland Research & Development GmbH / https://www.ibm.com/privacy
Vorsitz. AufsR.: Gregor Pillen / Geschäftsführung: Dirk Wittkopp
Sitz der Gesellschaft: Böblingen / Registergericht: AmtsG Stuttgart, HRB 243294
next prev parent reply other threads:[~2021-10-29 17:55 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-12 23:35 [PATCH v4 00/46] Register SCSI sysfs attributes earlier Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 01/46] scsi: core: Register " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 02/46] ata: Switch to attribute groups Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 03/46] firewire: sbp2: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 04/46] RDMA/srp: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 05/46] scsi: message: fusion: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 06/46] scsi: zfcp: " Bart Van Assche
2021-10-13 17:34 ` Benjamin Block
2021-10-12 23:35 ` [PATCH v4 07/46] scsi: 3w-9xxx: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 08/46] scsi: 3w-sas: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 09/46] scsi: 3w-xxxx: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 10/46] scsi: 53c700: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 11/46] scsi: aacraid: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 12/46] scsi: arcmsr: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 13/46] scsi: be2iscsi: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 14/46] scsi: bfa: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 15/46] scsi: bnx2fc: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 16/46] scsi: bnx2i: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 17/46] scsi: csiostor: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 18/46] scsi: cxlflash: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 19/46] scsi: fnic: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 20/46] scsi: hisi_sas: " Bart Van Assche
2021-10-13 8:22 ` John Garry
2021-10-12 23:35 ` [PATCH v4 21/46] scsi: hpsa: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 22/46] scsi: hptiop: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 23/46] scsi: ibmvscsi: " Bart Van Assche
2021-10-14 18:30 ` Tyrel Datwyler
2021-10-12 23:35 ` [PATCH v4 24/46] scsi: ibmvfc: " Bart Van Assche
2021-10-14 18:31 ` Tyrel Datwyler
2021-10-12 23:35 ` [PATCH v4 25/46] scsi: ipr: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 26/46] scsi: isci: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 27/46] scsi: lpfc: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 28/46] scsi: megaraid: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 29/46] scsi: mpt3sas: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 30/46] scsi: mvsas: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 31/46] scsi: myrb: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 32/46] scsi: myrs: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 33/46] scsi: ncr53c8xx: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 34/46] scsi: sym53c500_cs: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 35/46] scsi: pm8001: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 36/46] scsi: pmcraid: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 37/46] scsi: qedf: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 38/46] scsi: qedi: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 39/46] scsi: qla2xxx: Remove a declaration Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 40/46] scsi: qla2xxx: Switch to attribute groups Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 41/46] scsi: qla4xxx: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 42/46] scsi: smartpqi: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 43/46] scsi: snic: " Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 44/46] scsi: unisys: Remove the shost_attrs member Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 45/46] scsi: usb: Switch to attribute groups Bart Van Assche
2021-10-12 23:35 ` [PATCH v4 46/46] scsi: core: Remove two host template members that are no longer used Bart Van Assche
2021-10-17 1:48 ` [PATCH v4 00/46] Register SCSI sysfs attributes earlier Martin K. Petersen
2021-10-21 3:42 ` Martin K. Petersen
2021-10-23 20:54 ` Missing driver-specific sysfs attributes of scsi_device [was: Re: [PATCH v4 00/46] Register SCSI sysfs attributes earlier] Steffen Maier
2021-10-24 0:39 ` Steffen Maier
2021-10-24 2:55 ` Bart Van Assche
2021-10-24 11:18 ` [PATCH] scsi: core: Fix early registration of sysfs attributes for scsi_device Steffen Maier
2021-10-24 21:25 ` Bart Van Assche
2021-10-24 22:16 ` [PATCH v2] " Steffen Maier
2021-10-25 9:23 ` Julian Wiedmann
2021-10-25 16:00 ` Bart Van Assche
2021-10-26 1:42 ` [PATCH v3] " Steffen Maier
2021-10-26 10:00 ` Benjamin Block
2021-10-26 21:48 ` Bart Van Assche
2021-10-29 17:55 ` Benjamin Block [this message]
2021-10-26 18:31 ` Bart Van Assche
2021-10-29 17:56 ` Benjamin Block
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