From: Aaron Lu <aaron.lu@amd.com> To: James Bottomley <James.Bottomley@HansenPartnership.com>, Jeff Garzik <jgarzik@pobox.com>, Alan Stern <stern@rowland.harvard.edu>, Sergei Shtylyov <sshtylyov@mvista.com>, Oliver Neukum <oneukum@suse.de> Cc: Jeff Wu <jeff.wu@amd.com>, Lin Ming <minggr@gmail.com>, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, Aaron Lu <aaron.lwe@gmail.com>, Aaron Lu <aaron.lu@amd.com> Subject: [PATCH v4 7/7] block: genhd: add an interface to set disk's poll interval Date: Fri, 27 Jul 2012 17:00:50 +0800 [thread overview] Message-ID: <1343379650-2867-8-git-send-email-aaron.lu@amd.com> (raw) In-Reply-To: <1343379650-2867-1-git-send-email-aaron.lu@amd.com> Set the ODD's in kernel poll interval to 2s for the user in case the user is using an old distro on which udev will not set the system wide block parameter events_dfl_poll_msecs. Signed-off-by: Aaron Lu <aaron.lu@amd.com> --- block/genhd.c | 23 +++++++++++++++++------ drivers/scsi/sr.c | 1 + include/linux/genhd.h | 1 + 3 files changed, 19 insertions(+), 6 deletions(-) diff --git a/block/genhd.c b/block/genhd.c index bdb3682..de9b9d9 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -1619,6 +1619,19 @@ static void disk_events_workfn(struct work_struct *work) kobject_uevent_env(&disk_to_dev(disk)->kobj, KOBJ_CHANGE, envp); } +int disk_events_set_poll_msecs(struct gendisk *disk, long intv) +{ + if (intv < 0 && intv != -1) + return -EINVAL; + + disk_block_events(disk); + disk->ev->poll_msecs = intv; + __disk_unblock_events(disk, true); + + return 0; +} +EXPORT_SYMBOL(disk_events_set_poll_msecs); + /* * A disk events enabled device has the following sysfs nodes under * its /sys/block/X/ directory. @@ -1675,16 +1688,14 @@ static ssize_t disk_events_poll_msecs_store(struct device *dev, { struct gendisk *disk = dev_to_disk(dev); long intv; + int ret; if (!count || !sscanf(buf, "%ld", &intv)) return -EINVAL; - if (intv < 0 && intv != -1) - return -EINVAL; - - disk_block_events(disk); - disk->ev->poll_msecs = intv; - __disk_unblock_events(disk, true); + ret = disk_events_set_poll_msecs(disk, intv); + if (ret) + return ret; return count; } diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index f0c4aa2..e6e5549 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -864,6 +864,7 @@ static int sr_probe(struct device *dev) dev_set_drvdata(dev, cd); disk->flags |= GENHD_FL_REMOVABLE; add_disk(disk); + disk_events_set_poll_msecs(disk, 2000); sdev_printk(KERN_DEBUG, sdev, "Attached scsi CD-ROM %s\n", cd->cdi.name); diff --git a/include/linux/genhd.h b/include/linux/genhd.h index ae0aaa9..308d47e 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -417,6 +417,7 @@ extern void disk_block_events(struct gendisk *disk); extern void disk_unblock_events(struct gendisk *disk); extern void disk_flush_events(struct gendisk *disk, unsigned int mask); extern unsigned int disk_clear_events(struct gendisk *disk, unsigned int mask); +extern int disk_events_set_poll_msecs(struct gendisk *disk, long intv); /* drivers/char/random.c */ extern void add_disk_randomness(struct gendisk *disk); -- 1.7.11.3
WARNING: multiple messages have this Message-ID (diff)
From: Aaron Lu <aaron.lu@amd.com> To: James Bottomley <James.Bottomley@HansenPartnership.com>, Jeff Garzik <jgarzik@pobox.com>, Alan Stern <stern@rowland.harvard.edu>, Sergei Shtylyov <sshtylyov@mvista.com>, Oliver Neukum <oneukum@suse.de> Cc: Jeff Wu <jeff.wu@amd.com>, Lin Ming <minggr@gmail.com>, <linux-kernel@vger.kernel.org>, <linux-pm@vger.kernel.org>, <linux-scsi@vger.kernel.org>, <linux-ide@vger.kernel.org>, Aaron Lu <aaron.lwe@gmail.com>, Aaron Lu <aaron.lu@amd.com> Subject: [PATCH v4 7/7] block: genhd: add an interface to set disk's poll interval Date: Fri, 27 Jul 2012 17:00:50 +0800 [thread overview] Message-ID: <1343379650-2867-8-git-send-email-aaron.lu@amd.com> (raw) In-Reply-To: <1343379650-2867-1-git-send-email-aaron.lu@amd.com> Set the ODD's in kernel poll interval to 2s for the user in case the user is using an old distro on which udev will not set the system wide block parameter events_dfl_poll_msecs. Signed-off-by: Aaron Lu <aaron.lu@amd.com> --- block/genhd.c | 23 +++++++++++++++++------ drivers/scsi/sr.c | 1 + include/linux/genhd.h | 1 + 3 files changed, 19 insertions(+), 6 deletions(-) diff --git a/block/genhd.c b/block/genhd.c index bdb3682..de9b9d9 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -1619,6 +1619,19 @@ static void disk_events_workfn(struct work_struct *work) kobject_uevent_env(&disk_to_dev(disk)->kobj, KOBJ_CHANGE, envp); } +int disk_events_set_poll_msecs(struct gendisk *disk, long intv) +{ + if (intv < 0 && intv != -1) + return -EINVAL; + + disk_block_events(disk); + disk->ev->poll_msecs = intv; + __disk_unblock_events(disk, true); + + return 0; +} +EXPORT_SYMBOL(disk_events_set_poll_msecs); + /* * A disk events enabled device has the following sysfs nodes under * its /sys/block/X/ directory. @@ -1675,16 +1688,14 @@ static ssize_t disk_events_poll_msecs_store(struct device *dev, { struct gendisk *disk = dev_to_disk(dev); long intv; + int ret; if (!count || !sscanf(buf, "%ld", &intv)) return -EINVAL; - if (intv < 0 && intv != -1) - return -EINVAL; - - disk_block_events(disk); - disk->ev->poll_msecs = intv; - __disk_unblock_events(disk, true); + ret = disk_events_set_poll_msecs(disk, intv); + if (ret) + return ret; return count; } diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index f0c4aa2..e6e5549 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -864,6 +864,7 @@ static int sr_probe(struct device *dev) dev_set_drvdata(dev, cd); disk->flags |= GENHD_FL_REMOVABLE; add_disk(disk); + disk_events_set_poll_msecs(disk, 2000); sdev_printk(KERN_DEBUG, sdev, "Attached scsi CD-ROM %s\n", cd->cdi.name); diff --git a/include/linux/genhd.h b/include/linux/genhd.h index ae0aaa9..308d47e 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -417,6 +417,7 @@ extern void disk_block_events(struct gendisk *disk); extern void disk_unblock_events(struct gendisk *disk); extern void disk_flush_events(struct gendisk *disk, unsigned int mask); extern unsigned int disk_clear_events(struct gendisk *disk, unsigned int mask); +extern int disk_events_set_poll_msecs(struct gendisk *disk, long intv); /* drivers/char/random.c */ extern void add_disk_randomness(struct gendisk *disk); -- 1.7.11.3
next prev parent reply other threads:[~2012-07-27 9:00 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-07-27 9:00 [PATCH v4 0/7] ZPODD patches Aaron Lu 2012-07-27 9:00 ` Aaron Lu 2012-07-27 9:00 ` [PATCH v4 1/7] scsi: sr: check support for device busy class events Aaron Lu 2012-07-27 9:00 ` Aaron Lu 2012-07-27 9:00 ` [PATCH v4 2/7] scsi: pm: add interface to autosuspend scsi device Aaron Lu 2012-07-27 9:00 ` Aaron Lu 2012-07-27 9:00 ` [PATCH v4 3/7] scsi: sr: support zero power ODD(ZPODD) Aaron Lu 2012-07-27 9:00 ` Aaron Lu 2012-07-27 9:00 ` [PATCH v4 4/7] scsi: sr: block events when runtime suspended Aaron Lu 2012-07-27 9:00 ` Aaron Lu 2012-08-03 9:50 ` Aaron Lu 2012-08-03 9:50 ` Aaron Lu 2012-08-03 14:52 ` Jeff Garzik 2012-08-07 6:18 ` Aaron Lu 2012-08-07 6:18 ` Aaron Lu 2012-07-27 9:00 ` [PATCH v4 5/7] scsi: pm: use runtime resume callback if available Aaron Lu 2012-07-27 9:00 ` Aaron Lu 2012-07-27 9:00 ` [PATCH v4 6/7] scsi: sr: balance sr disk events block depth Aaron Lu 2012-07-27 9:00 ` Aaron Lu 2012-07-27 9:00 ` Aaron Lu [this message] 2012-07-27 9:00 ` [PATCH v4 7/7] block: genhd: add an interface to set disk's poll interval Aaron Lu 2012-07-31 2:40 ` [PATCH v4 0/7] ZPODD patches Aaron Lu 2012-07-31 2:40 ` Aaron Lu 2012-07-31 8:39 ` James Bottomley
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