| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <200707091529.04073.fenkes@de.ibm.com>
Date: Mon, 9 Jul 2007 15:29:03 +0200
From: Joachim Fenkes <fenkes@...ibm.com>
To: "LinuxPPC-Dev" <linuxppc-dev@...abs.org>,
LKML <linux-kernel@...r.kernel.org>,
"OF-General" <general@...ts.openfabrics.org>,
Roland Dreier <rolandd@...co.com>
Cc: "Hoang-Nam Nguyen" <hnguyen@...ibm.com>,
Christoph Raisch <raisch@...ibm.com>,
Stefan Roscher <stefan.roscher@...ibm.com>
Subject: [PATCH 08/13] IB/ehca: Lock renaming, static initializers
- Renamed all spinlock flags to "flags", matching the vast majority of kernel
code.
- Moved hcall_lock into the only module it's used in.
- Replaced spin_lock_init() and friends with static initializers for
global variables.
Signed-off-by: Joachim Fenkes <fenkes@...ibm.com>
---
drivers/infiniband/hw/ehca/ehca_classes.h | 1 -
drivers/infiniband/hw/ehca/ehca_cq.c | 12 ++++++------
drivers/infiniband/hw/ehca/ehca_main.c | 18 ++++--------------
drivers/infiniband/hw/ehca/ehca_qp.c | 6 +++---
drivers/infiniband/hw/ehca/ehca_reqs.c | 24 ++++++++++++------------
drivers/infiniband/hw/ehca/hcp_if.c | 2 ++
6 files changed, 27 insertions(+), 36 deletions(-)
diff --git a/drivers/infiniband/hw/ehca/ehca_classes.h b/drivers/infiniband/hw/ehca/ehca_classes.h
index 9d689ae..3550047 100644
--- a/drivers/infiniband/hw/ehca/ehca_classes.h
+++ b/drivers/infiniband/hw/ehca/ehca_classes.h
@@ -295,7 +295,6 @@ void ehca_cleanup_mrmw_cache(void);
extern spinlock_t ehca_qp_idr_lock;
extern spinlock_t ehca_cq_idr_lock;
-extern spinlock_t hcall_lock;
extern struct idr ehca_qp_idr;
extern struct idr ehca_cq_idr;
diff --git a/drivers/infiniband/hw/ehca/ehca_cq.c b/drivers/infiniband/hw/ehca/ehca_cq.c
index 67f0670..94bad27 100644
--- a/drivers/infiniband/hw/ehca/ehca_cq.c
+++ b/drivers/infiniband/hw/ehca/ehca_cq.c
@@ -56,11 +56,11 @@ int ehca_cq_assign_qp(struct ehca_cq *cq, struct ehca_qp *qp)
{
unsigned int qp_num = qp->real_qp_num;
unsigned int key = qp_num & (QP_HASHTAB_LEN-1);
- unsigned long spl_flags;
+ unsigned long flags;
- spin_lock_irqsave(&cq->spinlock, spl_flags);
+ spin_lock_irqsave(&cq->spinlock, flags);
hlist_add_head(&qp->list_entries, &cq->qp_hashtab[key]);
- spin_unlock_irqrestore(&cq->spinlock, spl_flags);
+ spin_unlock_irqrestore(&cq->spinlock, flags);
ehca_dbg(cq->ib_cq.device, "cq_num=%x real_qp_num=%x",
cq->cq_number, qp_num);
@@ -74,9 +74,9 @@ int ehca_cq_unassign_qp(struct ehca_cq *cq, unsigned int real_qp_num)
unsigned int key = real_qp_num & (QP_HASHTAB_LEN-1);
struct hlist_node *iter;
struct ehca_qp *qp;
- unsigned long spl_flags;
+ unsigned long flags;
- spin_lock_irqsave(&cq->spinlock, spl_flags);
+ spin_lock_irqsave(&cq->spinlock, flags);
hlist_for_each(iter, &cq->qp_hashtab[key]) {
qp = hlist_entry(iter, struct ehca_qp, list_entries);
if (qp->real_qp_num == real_qp_num) {
@@ -88,7 +88,7 @@ int ehca_cq_unassign_qp(struct ehca_cq *cq, unsigned int real_qp_num)
break;
}
}
- spin_unlock_irqrestore(&cq->spinlock, spl_flags);
+ spin_unlock_irqrestore(&cq->spinlock, flags);
if (ret)
ehca_err(cq->ib_cq.device,
"qp not found cq_num=%x real_qp_num=%x",
diff --git a/drivers/infiniband/hw/ehca/ehca_main.c b/drivers/infiniband/hw/ehca/ehca_main.c
index 9bd749c..77db890 100644
--- a/drivers/infiniband/hw/ehca/ehca_main.c
+++ b/drivers/infiniband/hw/ehca/ehca_main.c
@@ -96,15 +96,13 @@ MODULE_PARM_DESC(static_rate,
MODULE_PARM_DESC(scaling_code,
"set scaling code (0: disabled/default, 1: enabled)");
-spinlock_t ehca_qp_idr_lock;
-spinlock_t ehca_cq_idr_lock;
-spinlock_t hcall_lock;
+DEFINE_SPINLOCK(ehca_qp_idr_lock);
+DEFINE_SPINLOCK(ehca_cq_idr_lock);
DEFINE_IDR(ehca_qp_idr);
DEFINE_IDR(ehca_cq_idr);
-
-static struct list_head shca_list; /* list of all registered ehcas */
-static spinlock_t shca_list_lock;
+static LIST_HEAD(shca_list); /* list of all registered ehcas */
+static DEFINE_SPINLOCK(shca_list_lock);
static struct timer_list poll_eqs_timer;
@@ -864,14 +862,6 @@ int __init ehca_module_init(void)
printk(KERN_INFO "eHCA Infiniband Device Driver "
"(Rel.: SVNEHCA_0023)\n");
- idr_init(&ehca_qp_idr);
- idr_init(&ehca_cq_idr);
- spin_lock_init(&ehca_qp_idr_lock);
- spin_lock_init(&ehca_cq_idr_lock);
- spin_lock_init(&hcall_lock);
-
- INIT_LIST_HEAD(&shca_list);
- spin_lock_init(&shca_list_lock);
if ((ret = ehca_create_comp_pool())) {
ehca_gen_err("Cannot create comp pool.");
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
index 989f75e..ac4ff26 100644
--- a/drivers/infiniband/hw/ehca/ehca_qp.c
+++ b/drivers/infiniband/hw/ehca/ehca_qp.c
@@ -933,7 +933,7 @@ static int internal_modify_qp(struct ib_qp *ibqp,
u64 h_ret;
int bad_wqe_cnt = 0;
int squeue_locked = 0;
- unsigned long spl_flags = 0;
+ unsigned long flags = 0;
/* do query_qp to obtain current attr values */
mqpcb = ehca_alloc_fw_ctrlblock(GFP_KERNEL);
@@ -1074,7 +1074,7 @@ static int internal_modify_qp(struct ib_qp *ibqp,
if (!ibqp->uobject) {
struct ehca_wqe *wqe;
/* lock send queue */
- spin_lock_irqsave(&my_qp->spinlock_s, spl_flags);
+ spin_lock_irqsave(&my_qp->spinlock_s, flags);
squeue_locked = 1;
/* mark next free wqe */
wqe = (struct ehca_wqe*)
@@ -1360,7 +1360,7 @@ static int internal_modify_qp(struct ib_qp *ibqp,
modify_qp_exit2:
if (squeue_locked) { /* this means: sqe -> rts */
- spin_unlock_irqrestore(&my_qp->spinlock_s, spl_flags);
+ spin_unlock_irqrestore(&my_qp->spinlock_s, flags);
my_qp->sqerr_purgeflag = 1;
}
diff --git a/drivers/infiniband/hw/ehca/ehca_reqs.c b/drivers/infiniband/hw/ehca/ehca_reqs.c
index b5664fa..73f0c06 100644
--- a/drivers/infiniband/hw/ehca/ehca_reqs.c
+++ b/drivers/infiniband/hw/ehca/ehca_reqs.c
@@ -363,10 +363,10 @@ int ehca_post_send(struct ib_qp *qp,
struct ehca_wqe *wqe_p;
int wqe_cnt = 0;
int ret = 0;
- unsigned long spl_flags;
+ unsigned long flags;
/* LOCK the QUEUE */
- spin_lock_irqsave(&my_qp->spinlock_s, spl_flags);
+ spin_lock_irqsave(&my_qp->spinlock_s, flags);
/* loop processes list of send reqs */
for (cur_send_wr = send_wr; cur_send_wr != NULL;
@@ -408,7 +408,7 @@ int ehca_post_send(struct ib_qp *qp,
post_send_exit0:
/* UNLOCK the QUEUE */
- spin_unlock_irqrestore(&my_qp->spinlock_s, spl_flags);
+ spin_unlock_irqrestore(&my_qp->spinlock_s, flags);
iosync(); /* serialize GAL register access */
hipz_update_sqa(my_qp, wqe_cnt);
return ret;
@@ -423,7 +423,7 @@ static int internal_post_recv(struct ehca_qp *my_qp,
struct ehca_wqe *wqe_p;
int wqe_cnt = 0;
int ret = 0;
- unsigned long spl_flags;
+ unsigned long flags;
if (unlikely(!HAS_RQ(my_qp))) {
ehca_err(dev, "QP has no RQ ehca_qp=%p qp_num=%x ext_type=%d",
@@ -432,7 +432,7 @@ static int internal_post_recv(struct ehca_qp *my_qp,
}
/* LOCK the QUEUE */
- spin_lock_irqsave(&my_qp->spinlock_r, spl_flags);
+ spin_lock_irqsave(&my_qp->spinlock_r, flags);
/* loop processes list of send reqs */
for (cur_recv_wr = recv_wr; cur_recv_wr != NULL;
@@ -473,7 +473,7 @@ static int internal_post_recv(struct ehca_qp *my_qp,
} /* eof for cur_recv_wr */
post_recv_exit0:
- spin_unlock_irqrestore(&my_qp->spinlock_r, spl_flags);
+ spin_unlock_irqrestore(&my_qp->spinlock_r, flags);
iosync(); /* serialize GAL register access */
hipz_update_rqa(my_qp, wqe_cnt);
return ret;
@@ -536,7 +536,7 @@ poll_cq_one_read_cqe:
if (unlikely(cqe->status & WC_STATUS_PURGE_BIT)) {
struct ehca_qp *qp=ehca_cq_get_qp(my_cq, cqe->local_qp_number);
int purgeflag;
- unsigned long spl_flags;
+ unsigned long flags;
if (!qp) {
ehca_err(cq->device, "cq_num=%x qp_num=%x "
"could not find qp -> ignore cqe",
@@ -546,9 +546,9 @@ poll_cq_one_read_cqe:
/* ignore this purged cqe */
goto poll_cq_one_read_cqe;
}
- spin_lock_irqsave(&qp->spinlock_s, spl_flags);
+ spin_lock_irqsave(&qp->spinlock_s, flags);
purgeflag = qp->sqerr_purgeflag;
- spin_unlock_irqrestore(&qp->spinlock_s, spl_flags);
+ spin_unlock_irqrestore(&qp->spinlock_s, flags);
if (purgeflag) {
ehca_dbg(cq->device, "Got CQE with purged bit qp_num=%x "
@@ -633,7 +633,7 @@ int ehca_poll_cq(struct ib_cq *cq, int num_entries, struct ib_wc *wc)
int nr;
struct ib_wc *current_wc = wc;
int ret = 0;
- unsigned long spl_flags;
+ unsigned long flags;
if (num_entries < 1) {
ehca_err(cq->device, "Invalid num_entries=%d ehca_cq=%p "
@@ -642,14 +642,14 @@ int ehca_poll_cq(struct ib_cq *cq, int num_entries, struct ib_wc *wc)
goto poll_cq_exit0;
}
- spin_lock_irqsave(&my_cq->spinlock, spl_flags);
+ spin_lock_irqsave(&my_cq->spinlock, flags);
for (nr = 0; nr < num_entries; nr++) {
ret = ehca_poll_cq_one(cq, current_wc);
if (ret)
break;
current_wc++;
} /* eof for nr */
- spin_unlock_irqrestore(&my_cq->spinlock, spl_flags);
+ spin_unlock_irqrestore(&my_cq->spinlock, flags);
if (ret == -EAGAIN || !ret)
ret = nr;
diff --git a/drivers/infiniband/hw/ehca/hcp_if.c b/drivers/infiniband/hw/ehca/hcp_if.c
index b078377..5b927a6 100644
--- a/drivers/infiniband/hw/ehca/hcp_if.c
+++ b/drivers/infiniband/hw/ehca/hcp_if.c
@@ -81,6 +81,8 @@
#define H_MP_SHUTDOWN EHCA_BMASK_IBM(48, 48)
#define H_MP_RESET_QKEY_CTR EHCA_BMASK_IBM(49, 49)
+DEFINE_SPINLOCK(hcall_lock);
+
static u32 get_longbusy_msecs(int longbusy_rc)
{
switch (longbusy_rc) {
--
1.5.2
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists