From: "Ahmed S. Darwish" <a.darwish@linutronix.de>
To: "James E.J. Bottomley" <jejb@linux.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
John Garry <john.garry@huawei.com>,
Jason Yan <yanaijie@huawei.com>, Daniel Wagner <dwagner@suse.de>,
Artur Paszkiewicz <artur.paszkiewicz@intel.com>,
Jack Wang <jinpu.wang@cloud.ionos.com>
Cc: linux-scsi@vger.kernel.org, intel-linux-scu@intel.com,
LKML <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
"Sebastian A. Siewior" <bigeasy@linutronix.de>,
"Ahmed S. Darwish" <a.darwish@linutronix.de>
Subject: [PATCH v2 11/19] scsi: hisi_sas: Pass gfp_t flags to libsas event notifiers
Date: Tue, 12 Jan 2021 12:06:39 +0100
Message-ID: <20210112110647.627783-12-a.darwish@linutronix.de> (raw)
In-Reply-To: <20210112110647.627783-1-a.darwish@linutronix.de>
Use the new libsas event notifiers API, which requires callers to
explicitly pass the gfp_t memory allocation flags.
Below are the context analysis for modified functions:
=> hisi_sas_bytes_dmaed():
Since it is invoked from both process and atomic contexts, let its
callers pass the gfp_t flags:
* hisi_sas_main.c:
------------------
hisi_sas_phyup_work(): workqueue context
-> hisi_sas_bytes_dmaed(..., GFP_KERNEL)
hisi_sas_controller_reset_done(): has an msleep()
-> hisi_sas_rescan_topology()
-> hisi_sas_phy_down()
-> hisi_sas_bytes_dmaed(..., GFP_KERNEL)
hisi_sas_debug_I_T_nexus_reset(): calls wait_for_completion_timeout()
-> hisi_sas_phy_down()
-> hisi_sas_bytes_dmaed(..., GFP_KERNEL)
* hisi_sas_v1_hw.c:
-------------------
int_abnormal_v1_hw(): irq handler
-> hisi_sas_phy_down()
-> hisi_sas_bytes_dmaed(..., GFP_ATOMIC)
* hisi_sas_v[23]_hw.c:
----------------------
int_phy_updown_v[23]_hw(): irq handler
-> phy_down_v[23]_hw()
-> hisi_sas_phy_down()
-> hisi_sas_bytes_dmaed(..., GFP_ATOMIC)
=> int_bcast_v1_hw() and phy_bcast_v3_hw():
Both are invoked exclusively from irq handlers. Pass GFP_ATOMIC.
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Cc: John Garry <john.garry@huawei.com>
---
drivers/scsi/hisi_sas/hisi_sas.h | 3 ++-
drivers/scsi/hisi_sas/hisi_sas_main.c | 25 ++++++++++++++-----------
drivers/scsi/hisi_sas/hisi_sas_v1_hw.c | 5 +++--
drivers/scsi/hisi_sas/hisi_sas_v2_hw.c | 5 +++--
drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 5 +++--
5 files changed, 25 insertions(+), 18 deletions(-)
diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index e821dd32dd28..873bfffa626d 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -637,7 +637,8 @@ extern void hisi_sas_scan_start(struct Scsi_Host *shost);
extern int hisi_sas_host_reset(struct Scsi_Host *shost, int reset_type);
extern void hisi_sas_phy_enable(struct hisi_hba *hisi_hba, int phy_no,
int enable);
-extern void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy);
+extern void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy,
+ gfp_t gfp_flags);
extern void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba,
struct sas_task *task,
struct hisi_sas_slot *slot);
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 76f8fc3fad59..f781b52c6441 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -612,7 +612,8 @@ static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
return rc;
}
-static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
+static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no,
+ gfp_t gfp_flags)
{
struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
struct asd_sas_phy *sas_phy = &phy->sas_phy;
@@ -626,7 +627,7 @@ static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
return;
}
- sas_notify_phy_event(sas_phy, PHYE_OOB_DONE);
+ sas_notify_phy_event_gfp(sas_phy, PHYE_OOB_DONE, gfp_flags);
if (sas_phy->phy) {
struct sas_phy *sphy = sas_phy->phy;
@@ -654,7 +655,7 @@ static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
}
sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
- sas_notify_port_event(sas_phy, PORTE_BYTES_DMAED);
+ sas_notify_port_event_gfp(sas_phy, PORTE_BYTES_DMAED, gfp_flags);
}
static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
@@ -860,7 +861,7 @@ static void hisi_sas_phyup_work(struct work_struct *work)
if (phy->identify.target_port_protocols == SAS_PROTOCOL_SSP)
hisi_hba->hw->sl_notify_ssp(hisi_hba, phy_no);
- hisi_sas_bytes_dmaed(hisi_hba, phy_no);
+ hisi_sas_bytes_dmaed(hisi_hba, phy_no, GFP_KERNEL);
}
static void hisi_sas_linkreset_work(struct work_struct *work)
@@ -1429,11 +1430,12 @@ static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 state)
_sas_port = sas_port;
if (dev_is_expander(dev->dev_type))
- sas_notify_port_event(sas_phy,
- PORTE_BROADCAST_RCVD);
+ sas_notify_port_event_gfp(sas_phy,
+ PORTE_BROADCAST_RCVD,
+ GFP_KERNEL);
}
} else {
- hisi_sas_phy_down(hisi_hba, phy_no, 0);
+ hisi_sas_phy_down(hisi_hba, phy_no, 0, GFP_KERNEL);
}
}
}
@@ -1787,7 +1789,7 @@ static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
/* report PHY down if timed out */
if (!ret)
- hisi_sas_phy_down(hisi_hba, sas_phy->id, 0);
+ hisi_sas_phy_down(hisi_hba, sas_phy->id, 0, GFP_KERNEL);
} else if (sas_dev->dev_status != HISI_SAS_DEV_INIT) {
/*
* If in init state, we rely on caller to wait for link to be
@@ -2187,7 +2189,8 @@ static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy)
spin_unlock_irqrestore(&phy->lock, flags);
}
-void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy)
+void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy,
+ gfp_t gfp_flags)
{
struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
struct asd_sas_phy *sas_phy = &phy->sas_phy;
@@ -2195,7 +2198,7 @@ void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy)
if (rdy) {
/* Phy down but ready */
- hisi_sas_bytes_dmaed(hisi_hba, phy_no);
+ hisi_sas_bytes_dmaed(hisi_hba, phy_no, gfp_flags);
hisi_sas_port_notify_formed(sas_phy);
} else {
struct hisi_sas_port *port = phy->port;
@@ -2206,7 +2209,7 @@ void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy)
return;
}
/* Phy down and not ready */
- sas_notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL);
+ sas_notify_phy_event_gfp(sas_phy, PHYE_LOSS_OF_SIGNAL, gfp_flags);
sas_phy_disconnected(sas_phy);
if (port) {
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
index 22eecc89d41b..b0a72ffce4f0 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v1_hw.c
@@ -1423,7 +1423,7 @@ static irqreturn_t int_bcast_v1_hw(int irq, void *p)
}
if (!test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))
- sas_notify_port_event(sas_phy, PORTE_BROADCAST_RCVD);
+ sas_notify_port_event_gfp(sas_phy, PORTE_BROADCAST_RCVD, GFP_ATOMIC);
end:
hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT2,
@@ -1452,7 +1452,8 @@ static irqreturn_t int_abnormal_v1_hw(int irq, void *p)
u32 phy_state = hisi_sas_read32(hisi_hba, PHY_STATE);
hisi_sas_phy_down(hisi_hba, phy_no,
- (phy_state & 1 << phy_no) ? 1 : 0);
+ (phy_state & 1 << phy_no) ? 1 : 0,
+ GFP_ATOMIC);
}
if (irq_value & CHL_INT0_ID_TIMEOUT_MSK)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
index 10ba0680da04..d8f8fb2ed63b 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v2_hw.c
@@ -2734,7 +2734,8 @@ static int phy_down_v2_hw(int phy_no, struct hisi_hba *hisi_hba)
phy_state = hisi_sas_read32(hisi_hba, PHY_STATE);
dev_info(dev, "phydown: phy%d phy_state=0x%x\n", phy_no, phy_state);
- hisi_sas_phy_down(hisi_hba, phy_no, (phy_state & 1 << phy_no) ? 1 : 0);
+ hisi_sas_phy_down(hisi_hba, phy_no, (phy_state & 1 << phy_no) ? 1 : 0,
+ GFP_ATOMIC);
sl_ctrl = hisi_sas_phy_read32(hisi_hba, phy_no, SL_CONTROL);
hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL,
@@ -2824,7 +2825,7 @@ static void phy_bcast_v2_hw(int phy_no, struct hisi_hba *hisi_hba)
bcast_status = hisi_sas_phy_read32(hisi_hba, phy_no, RX_PRIMS_STATUS);
if ((bcast_status & RX_BCAST_CHG_MSK) &&
!test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))
- sas_notify_port_event(sas_phy, PORTE_BROADCAST_RCVD);
+ sas_notify_port_event_gfp(sas_phy, PORTE_BROADCAST_RCVD, GFP_ATOMIC);
hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0,
CHL_INT0_SL_RX_BCST_ACK_MSK);
hisi_sas_phy_write32(hisi_hba, phy_no, SL_RX_BCAST_CHK_MSK, 0);
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 9d9dcc11a866..87392de60e9d 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -1580,7 +1580,8 @@ static irqreturn_t phy_down_v3_hw(int phy_no, struct hisi_hba *hisi_hba)
phy_state = hisi_sas_read32(hisi_hba, PHY_STATE);
dev_info(dev, "phydown: phy%d phy_state=0x%x\n", phy_no, phy_state);
- hisi_sas_phy_down(hisi_hba, phy_no, (phy_state & 1 << phy_no) ? 1 : 0);
+ hisi_sas_phy_down(hisi_hba, phy_no, (phy_state & 1 << phy_no) ? 1 : 0,
+ GFP_ATOMIC);
sl_ctrl = hisi_sas_phy_read32(hisi_hba, phy_no, SL_CONTROL);
hisi_sas_phy_write32(hisi_hba, phy_no, SL_CONTROL,
@@ -1606,7 +1607,7 @@ static irqreturn_t phy_bcast_v3_hw(int phy_no, struct hisi_hba *hisi_hba)
bcast_status = hisi_sas_phy_read32(hisi_hba, phy_no, RX_PRIMS_STATUS);
if ((bcast_status & RX_BCAST_CHG_MSK) &&
!test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))
- sas_notify_port_event(sas_phy, PORTE_BROADCAST_RCVD);
+ sas_notify_port_event_gfp(sas_phy, PORTE_BROADCAST_RCVD, GFP_ATOMIC);
hisi_sas_phy_write32(hisi_hba, phy_no, CHL_INT0,
CHL_INT0_SL_RX_BCST_ACK_MSK);
hisi_sas_phy_write32(hisi_hba, phy_no, SL_RX_BCAST_CHK_MSK, 0);
--
2.30.0
next prev parent reply index
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-12 11:06 [PATCH v2 00/19] scsi: libsas: Remove in_interrupt() check Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 01/19] Documentation: scsi: libsas: Remove notify_ha_event() Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 02/19] scsi: libsas and users: Remove notifier indirection Ahmed S. Darwish
2021-01-12 11:36 ` John Garry
2021-01-12 12:09 ` Ahmed S. Darwish
2021-01-12 13:07 ` [PATCH v3 " Ahmed S. Darwish
2021-01-12 15:43 ` Christoph Hellwig
2021-01-12 11:06 ` [PATCH v2 03/19] scsi: libsas: Introduce a _gfp() variant of event notifiers Ahmed S. Darwish
2021-01-12 15:45 ` Christoph Hellwig
2021-01-12 17:12 ` Sebastian A. Siewior
2021-01-12 11:06 ` [PATCH v2 04/19] scsi: mvsas: Pass gfp_t flags to libsas " Ahmed S. Darwish
2021-01-12 15:46 ` Christoph Hellwig
2021-01-12 17:03 ` Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 05/19] scsi: isci: port: link down: Pass gfp_t flags Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 06/19] scsi: isci: port: link up: " Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 07/19] scsi: isci: port: broadcast change: " Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 08/19] scsi: libsas: Pass gfp_t flags to event notifiers Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 09/19] scsi: pm80xx: Pass gfp_t flags to libsas " Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 10/19] scsi: aic94xx: " Ahmed S. Darwish
2021-01-12 11:06 ` Ahmed S. Darwish [this message]
2021-01-12 11:06 ` [PATCH v2 12/19] scsi: libsas: event notifiers API: Add gfp_t flags parameter Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 13/19] scsi: hisi_sas: Switch back to original libsas event notifiers Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 14/19] scsi: aic94xx: " Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 15/19] scsi: pm80xx: " Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 16/19] scsi: libsas: Switch back to original event notifiers API Ahmed S. Darwish
2021-01-12 14:42 ` John Garry
2021-01-12 11:06 ` [PATCH v2 17/19] scsi: isci: Switch back to original libsas event notifiers Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 18/19] scsi: mvsas: " Ahmed S. Darwish
2021-01-12 11:06 ` [PATCH v2 19/19] scsi: libsas: Remove temporarily-added _gfp() API variants Ahmed S. Darwish
2021-01-12 11:53 ` [PATCH v2 00/19] scsi: libsas: Remove in_interrupt() check John Garry
2021-01-12 13:19 ` Ahmed S. Darwish
2021-01-12 16:00 ` John Garry
2021-01-12 17:33 ` Ahmed S. Darwish
2021-01-14 9:51 ` John Garry
2021-01-15 16:27 ` Ahmed S. Darwish
2021-01-15 16:29 ` John Garry
2021-01-15 16:41 ` Ahmed S. Darwish
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210112110647.627783-12-a.darwish@linutronix.de \
--to=a.darwish@linutronix.de \
--cc=artur.paszkiewicz@intel.com \
--cc=bigeasy@linutronix.de \
--cc=dwagner@suse.de \
--cc=intel-linux-scu@intel.com \
--cc=jejb@linux.ibm.com \
--cc=jinpu.wang@cloud.ionos.com \
--cc=john.garry@huawei.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=martin.petersen@oracle.com \
--cc=tglx@linutronix.de \
--cc=yanaijie@huawei.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
LKML Archive on lore.kernel.org
Archives are clonable:
git clone --mirror https://lkml.kernel.org/lkml/0 lkml/git/0.git
git clone --mirror https://lkml.kernel.org/lkml/1 lkml/git/1.git
git clone --mirror https://lkml.kernel.org/lkml/2 lkml/git/2.git
git clone --mirror https://lkml.kernel.org/lkml/3 lkml/git/3.git
git clone --mirror https://lkml.kernel.org/lkml/4 lkml/git/4.git
git clone --mirror https://lkml.kernel.org/lkml/5 lkml/git/5.git
git clone --mirror https://lkml.kernel.org/lkml/6 lkml/git/6.git
git clone --mirror https://lkml.kernel.org/lkml/7 lkml/git/7.git
git clone --mirror https://lkml.kernel.org/lkml/8 lkml/git/8.git
git clone --mirror https://lkml.kernel.org/lkml/9 lkml/git/9.git
# If you have public-inbox 1.1+ installed, you may
# initialize and index your mirror using the following commands:
public-inbox-init -V2 lkml lkml/ https://lkml.kernel.org/lkml \
linux-kernel@vger.kernel.org
public-inbox-index lkml
Example config snippet for mirrors
Newsgroup available over NNTP:
nntp://nntp.lore.kernel.org/org.kernel.vger.linux-kernel
AGPL code for this site: git clone https://public-inbox.org/public-inbox.git