Release 4.16 drivers/scsi/libsas/sas_event.c
/*
* Serial Attached SCSI (SAS) Event processing
*
* Copyright (C) 2005 Adaptec, Inc. All rights reserved.
* Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
*
* This file is licensed under GPLv2.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <linux/export.h>
#include <scsi/scsi_host.h>
#include "sas_internal.h"
#include "sas_dump.h"
int sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw)
{
/* it's added to the defer_q when draining so return succeed */
int rc = 1;
if (!test_bit(SAS_HA_REGISTERED, &ha->state))
return 0;
if (test_bit(SAS_HA_DRAINING, &ha->state)) {
/* add it to the defer list, if not already pending */
if (list_empty(&sw->drain_node))
list_add_tail(&sw->drain_node, &ha->defer_q);
} else
rc = queue_work(ha->event_q, &sw->work);
return rc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dan J Williams | 75 | 80.65% | 2 | 33.33% |
| Johannes Thumshirn | 13 | 13.98% | 1 | 16.67% |
| Jason Yan | 4 | 4.30% | 2 | 33.33% |
| Xiang Chen | 1 | 1.08% | 1 | 16.67% |
| Total | 93 | 100.00% | 6 | 100.00% |
static int sas_queue_event(int event, struct sas_work *work,
struct sas_ha_struct *ha)
{
unsigned long flags;
int rc;
spin_lock_irqsave(&ha->lock, flags);
rc = sas_queue_work(ha, work);
spin_unlock_irqrestore(&ha->lock, flags);
return rc;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dan J Williams | 49 | 84.48% | 3 | 60.00% |
| Johannes Thumshirn | 6 | 10.34% | 1 | 20.00% |
| Jason Yan | 3 | 5.17% | 1 | 20.00% |
| Total | 58 | 100.00% | 5 | 100.00% |
void __sas_drain_work(struct sas_ha_struct *ha)
{
struct sas_work *sw, *_sw;
int ret;
set_bit(SAS_HA_DRAINING, &ha->state);
/* flush submitters */
spin_lock_irq(&ha->lock);
spin_unlock_irq(&ha->lock);
drain_workqueue(ha->event_q);
drain_workqueue(ha->disco_q);
spin_lock_irq(&ha->lock);
clear_bit(SAS_HA_DRAINING, &ha->state);
list_for_each_entry_safe(sw, _sw, &ha->defer_q, drain_node) {
list_del_init(&sw->drain_node);
ret = sas_queue_work(ha, sw);
if (ret != 1)
sas_free_event(to_asd_sas_event(&sw->work));
}
spin_unlock_irq(&ha->lock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dan J Williams | 102 | 76.12% | 4 | 66.67% |
| Jason Yan | 32 | 23.88% | 2 | 33.33% |
| Total | 134 | 100.00% | 6 | 100.00% |
int sas_drain_work(struct sas_ha_struct *ha)
{
int err;
err = mutex_lock_interruptible(&ha->drain_mutex);
if (err)
return err;
if (test_bit(SAS_HA_REGISTERED, &ha->state))
__sas_drain_work(ha);
mutex_unlock(&ha->drain_mutex);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dan J Williams | 58 | 100.00% | 2 | 100.00% |
| Total | 58 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL_GPL(sas_drain_work);
void sas_disable_revalidation(struct sas_ha_struct *ha)
{
mutex_lock(&ha->disco_mutex);
set_bit(SAS_HA_ATA_EH_ACTIVE, &ha->state);
mutex_unlock(&ha->disco_mutex);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dan J Williams | 36 | 100.00% | 1 | 100.00% |
| Total | 36 | 100.00% | 1 | 100.00% |
void sas_enable_revalidation(struct sas_ha_struct *ha)
{
int i;
mutex_lock(&ha->disco_mutex);
clear_bit(SAS_HA_ATA_EH_ACTIVE, &ha->state);
for (i = 0; i < ha->num_phys; i++) {
struct asd_sas_port *port = ha->sas_port[i];
const int ev = DISCE_REVALIDATE_DOMAIN;
struct sas_discovery *d = &port->disc;
struct asd_sas_phy *sas_phy;
if (!test_and_clear_bit(ev, &d->pending))
continue;
if (list_empty(&port->phy_list))
continue;
sas_phy = container_of(port->phy_list.next, struct asd_sas_phy,
port_phy_el);
ha->notify_port_event(sas_phy, PORTE_BROADCAST_RCVD);
}
mutex_unlock(&ha->disco_mutex);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dan J Williams | 106 | 76.26% | 1 | 50.00% |
| Jason Yan | 33 | 23.74% | 1 | 50.00% |
| Total | 139 | 100.00% | 2 | 100.00% |
static void sas_port_event_worker(struct work_struct *work)
{
struct asd_sas_event *ev = to_asd_sas_event(work);
sas_port_event_fns[ev->event](work);
sas_free_event(ev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jason Yan | 36 | 100.00% | 1 | 100.00% |
| Total | 36 | 100.00% | 1 | 100.00% |
static void sas_phy_event_worker(struct work_struct *work)
{
struct asd_sas_event *ev = to_asd_sas_event(work);
sas_phy_event_fns[ev->event](work);
sas_free_event(ev);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jason Yan | 36 | 100.00% | 1 | 100.00% |
| Total | 36 | 100.00% | 1 | 100.00% |
static int sas_notify_port_event(struct asd_sas_phy *phy, enum port_event event)
{
struct asd_sas_event *ev;
struct sas_ha_struct *ha = phy->ha;
int ret;
BUG_ON(event >= PORT_NUM_EVENTS);
ev = sas_alloc_event(phy);
if (!ev)
return -ENOMEM;
INIT_SAS_EVENT(ev, sas_port_event_worker, phy, event);
ret = sas_queue_event(event, &ev->work, ha);
if (ret != 1)
sas_free_event(ev);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jason Yan | 52 | 55.32% | 2 | 40.00% |
| James Bottomley | 38 | 40.43% | 1 | 20.00% |
| Johannes Thumshirn | 3 | 3.19% | 1 | 20.00% |
| David Howells | 1 | 1.06% | 1 | 20.00% |
| Total | 94 | 100.00% | 5 | 100.00% |
int sas_notify_phy_event(struct asd_sas_phy *phy, enum phy_event event)
{
struct asd_sas_event *ev;
struct sas_ha_struct *ha = phy->ha;
int ret;
BUG_ON(event >= PHY_NUM_EVENTS);
ev = sas_alloc_event(phy);
if (!ev)
return -ENOMEM;
INIT_SAS_EVENT(ev, sas_phy_event_worker, phy, event);
ret = sas_queue_event(event, &ev->work, ha);
if (ret != 1)
sas_free_event(ev);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jason Yan | 51 | 54.84% | 1 | 20.00% |
| James Bottomley | 37 | 39.78% | 1 | 20.00% |
| Johannes Thumshirn | 3 | 3.23% | 1 | 20.00% |
| Dan J Williams | 1 | 1.08% | 1 | 20.00% |
| David Howells | 1 | 1.08% | 1 | 20.00% |
| Total | 93 | 100.00% | 5 | 100.00% |
int sas_init_events(struct sas_ha_struct *sas_ha)
{
sas_ha->notify_port_event = sas_notify_port_event;
sas_ha->notify_phy_event = sas_notify_phy_event;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| James Bottomley | 22 | 88.00% | 1 | 25.00% |
| Jason Yan | 1 | 4.00% | 1 | 25.00% |
| David Howells | 1 | 4.00% | 1 | 25.00% |
| Dan J Williams | 1 | 4.00% | 1 | 25.00% |
| Total | 25 | 100.00% | 4 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Dan J Williams | 436 | 53.17% | 6 | 42.86% |
| Jason Yan | 248 | 30.24% | 4 | 28.57% |
| James Bottomley | 107 | 13.05% | 1 | 7.14% |
| Johannes Thumshirn | 25 | 3.05% | 1 | 7.14% |
| David Howells | 3 | 0.37% | 1 | 7.14% |
| Xiang Chen | 1 | 0.12% | 1 | 7.14% |
| Total | 820 | 100.00% | 14 | 100.00% |
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