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Message-Id: <1337335173-3226-5-git-send-email-vipul@chelsio.com>
Date: Fri, 18 May 2012 15:29:27 +0530
From: Vipul Pandya <vipul@...lsio.com>
To: linux-rdma@...r.kernel.org, netdev@...r.kernel.org
Cc: roland@...estorage.com, davem@...emloft.net, divy@...lsio.com,
dm@...lsio.com, kumaras@...lsio.com, swise@...ngridcomputing.com,
Vipul Pandya <vipul@...lsio.com>
Subject: [PATCH 04/10] RDMA/cxgb4: Add debugfs rdma memory stats
Signed-off-by: Vipul Pandya <vipul@...lsio.com>
Signed-off-by: Steve Wise <swise@...ngridcomputing.com>
---
drivers/infiniband/hw/cxgb4/device.c | 78 +++++++++++++++++++++++++++++++-
drivers/infiniband/hw/cxgb4/iw_cxgb4.h | 17 +++++++
drivers/infiniband/hw/cxgb4/mem.c | 11 ++++-
drivers/infiniband/hw/cxgb4/provider.c | 8 +++
drivers/infiniband/hw/cxgb4/resource.c | 44 ++++++++++++++++++
5 files changed, 155 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index 6d0df6e..8483111 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -240,6 +240,62 @@ static const struct file_operations stag_debugfs_fops = {
.llseek = default_llseek,
};
+static int stats_show(struct seq_file *seq, void *v)
+{
+ struct c4iw_dev *dev = seq->private;
+
+ seq_printf(seq, " Object: %10s %10s %10s\n", "Total", "Current", "Max");
+ seq_printf(seq, " PDID: %10llu %10llu %10llu\n",
+ dev->rdev.stats.pd.total, dev->rdev.stats.pd.cur,
+ dev->rdev.stats.pd.max);
+ seq_printf(seq, " QID: %10llu %10llu %10llu\n",
+ dev->rdev.stats.qid.total, dev->rdev.stats.qid.cur,
+ dev->rdev.stats.qid.max);
+ seq_printf(seq, " TPTMEM: %10llu %10llu %10llu\n",
+ dev->rdev.stats.stag.total, dev->rdev.stats.stag.cur,
+ dev->rdev.stats.stag.max);
+ seq_printf(seq, " PBLMEM: %10llu %10llu %10llu\n",
+ dev->rdev.stats.pbl.total, dev->rdev.stats.pbl.cur,
+ dev->rdev.stats.pbl.max);
+ seq_printf(seq, " RQTMEM: %10llu %10llu %10llu\n",
+ dev->rdev.stats.rqt.total, dev->rdev.stats.rqt.cur,
+ dev->rdev.stats.rqt.max);
+ seq_printf(seq, " OCQPMEM: %10llu %10llu %10llu\n",
+ dev->rdev.stats.ocqp.total, dev->rdev.stats.ocqp.cur,
+ dev->rdev.stats.ocqp.max);
+ return 0;
+}
+
+static int stats_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, stats_show, inode->i_private);
+}
+
+static ssize_t stats_clear(struct file *file, const char __user *buf,
+ size_t count, loff_t *pos)
+{
+ struct c4iw_dev *dev = ((struct seq_file *)file->private_data)->private;
+
+ mutex_lock(&dev->rdev.stats.lock);
+ dev->rdev.stats.pd.max = 0;
+ dev->rdev.stats.qid.max = 0;
+ dev->rdev.stats.stag.max = 0;
+ dev->rdev.stats.pbl.max = 0;
+ dev->rdev.stats.rqt.max = 0;
+ dev->rdev.stats.ocqp.max = 0;
+ mutex_unlock(&dev->rdev.stats.lock);
+ return count;
+}
+
+static const struct file_operations stats_debugfs_fops = {
+ .owner = THIS_MODULE,
+ .open = stats_open,
+ .release = single_release,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .write = stats_clear,
+};
+
static int setup_debugfs(struct c4iw_dev *devp)
{
struct dentry *de;
@@ -256,6 +312,12 @@ static int setup_debugfs(struct c4iw_dev *devp)
(void *)devp, &stag_debugfs_fops);
if (de && de->d_inode)
de->d_inode->i_size = 4096;
+
+ de = debugfs_create_file("stats", S_IWUSR, devp->debugfs_root,
+ (void *)devp, &stats_debugfs_fops);
+ if (de && de->d_inode)
+ de->d_inode->i_size = 4096;
+
return 0;
}
@@ -269,9 +331,13 @@ void c4iw_release_dev_ucontext(struct c4iw_rdev *rdev,
list_for_each_safe(pos, nxt, &uctx->qpids) {
entry = list_entry(pos, struct c4iw_qid_list, entry);
list_del_init(&entry->entry);
- if (!(entry->qid & rdev->qpmask))
+ if (!(entry->qid & rdev->qpmask)) {
c4iw_put_resource(&rdev->resource.qid_fifo, entry->qid,
- &rdev->resource.qid_fifo_lock);
+ &rdev->resource.qid_fifo_lock);
+ mutex_lock(&rdev->stats.lock);
+ rdev->stats.qid.cur -= rdev->qpmask + 1;
+ mutex_unlock(&rdev->stats.lock);
+ }
kfree(entry);
}
@@ -332,6 +398,13 @@ static int c4iw_rdev_open(struct c4iw_rdev *rdev)
goto err1;
}
+ rdev->stats.pd.total = T4_MAX_NUM_PD;
+ rdev->stats.stag.total = rdev->lldi.vr->stag.size;
+ rdev->stats.pbl.total = rdev->lldi.vr->pbl.size;
+ rdev->stats.rqt.total = rdev->lldi.vr->rq.size;
+ rdev->stats.ocqp.total = rdev->lldi.vr->ocq.size;
+ rdev->stats.qid.total = rdev->lldi.vr->qp.size;
+
err = c4iw_init_resource(rdev, c4iw_num_stags(rdev), T4_MAX_NUM_PD);
if (err) {
printk(KERN_ERR MOD "error %d initializing resources\n", err);
@@ -440,6 +513,7 @@ static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop)
idr_init(&devp->qpidr);
idr_init(&devp->mmidr);
spin_lock_init(&devp->lock);
+ mutex_init(&devp->rdev.stats.lock);
if (c4iw_debugfs_root) {
devp->debugfs_root = debugfs_create_dir(
diff --git a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
index 1357c5b..a849074 100644
--- a/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
+++ b/drivers/infiniband/hw/cxgb4/iw_cxgb4.h
@@ -103,6 +103,22 @@ enum c4iw_rdev_flags {
T4_FATAL_ERROR = (1<<0),
};
+struct c4iw_stat {
+ u64 total;
+ u64 cur;
+ u64 max;
+};
+
+struct c4iw_stats {
+ struct mutex lock;
+ struct c4iw_stat qid;
+ struct c4iw_stat pd;
+ struct c4iw_stat stag;
+ struct c4iw_stat pbl;
+ struct c4iw_stat rqt;
+ struct c4iw_stat ocqp;
+};
+
struct c4iw_rdev {
struct c4iw_resource resource;
unsigned long qpshift;
@@ -117,6 +133,7 @@ struct c4iw_rdev {
struct cxgb4_lld_info lldi;
unsigned long oc_mw_pa;
void __iomem *oc_mw_kva;
+ struct c4iw_stats stats;
};
static inline int c4iw_fatal_error(struct c4iw_rdev *rdev)
diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
index 40c8353..2a87379 100644
--- a/drivers/infiniband/hw/cxgb4/mem.c
+++ b/drivers/infiniband/hw/cxgb4/mem.c
@@ -135,6 +135,11 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry,
&rdev->resource.tpt_fifo_lock);
if (!stag_idx)
return -ENOMEM;
+ mutex_lock(&rdev->stats.lock);
+ rdev->stats.stag.cur += 32;
+ if (rdev->stats.stag.cur > rdev->stats.stag.max)
+ rdev->stats.stag.max = rdev->stats.stag.cur;
+ mutex_unlock(&rdev->stats.lock);
*stag = (stag_idx << 8) | (atomic_inc_return(&key) & 0xff);
}
PDBG("%s stag_state 0x%0x type 0x%0x pdid 0x%0x, stag_idx 0x%x\n",
@@ -165,9 +170,13 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry,
(rdev->lldi.vr->stag.start >> 5),
sizeof(tpt), &tpt);
- if (reset_tpt_entry)
+ if (reset_tpt_entry) {
c4iw_put_resource(&rdev->resource.tpt_fifo, stag_idx,
&rdev->resource.tpt_fifo_lock);
+ mutex_lock(&rdev->stats.lock);
+ rdev->stats.stag.cur -= 32;
+ mutex_unlock(&rdev->stats.lock);
+ }
return err;
}
diff --git a/drivers/infiniband/hw/cxgb4/provider.c b/drivers/infiniband/hw/cxgb4/provider.c
index be1c18f..8d58736 100644
--- a/drivers/infiniband/hw/cxgb4/provider.c
+++ b/drivers/infiniband/hw/cxgb4/provider.c
@@ -190,6 +190,9 @@ static int c4iw_deallocate_pd(struct ib_pd *pd)
PDBG("%s ibpd %p pdid 0x%x\n", __func__, pd, php->pdid);
c4iw_put_resource(&rhp->rdev.resource.pdid_fifo, php->pdid,
&rhp->rdev.resource.pdid_fifo_lock);
+ mutex_lock(&rhp->rdev.stats.lock);
+ rhp->rdev.stats.pd.cur--;
+ mutex_unlock(&rhp->rdev.stats.lock);
kfree(php);
return 0;
}
@@ -222,6 +225,11 @@ static struct ib_pd *c4iw_allocate_pd(struct ib_device *ibdev,
return ERR_PTR(-EFAULT);
}
}
+ mutex_lock(&rhp->rdev.stats.lock);
+ rhp->rdev.stats.pd.cur++;
+ if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max)
+ rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur;
+ mutex_unlock(&rhp->rdev.stats.lock);
PDBG("%s pdid 0x%0x ptr 0x%p\n", __func__, pdid, php);
return &php->ibpd;
}
diff --git a/drivers/infiniband/hw/cxgb4/resource.c b/drivers/infiniband/hw/cxgb4/resource.c
index 407ff39..1b948d1 100644
--- a/drivers/infiniband/hw/cxgb4/resource.c
+++ b/drivers/infiniband/hw/cxgb4/resource.c
@@ -185,6 +185,9 @@ u32 c4iw_get_cqid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx)
&rdev->resource.qid_fifo_lock);
if (!qid)
goto out;
+ mutex_lock(&rdev->stats.lock);
+ rdev->stats.qid.cur += rdev->qpmask + 1;
+ mutex_unlock(&rdev->stats.lock);
for (i = qid+1; i & rdev->qpmask; i++) {
entry = kmalloc(sizeof *entry, GFP_KERNEL);
if (!entry)
@@ -213,6 +216,10 @@ u32 c4iw_get_cqid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx)
out:
mutex_unlock(&uctx->lock);
PDBG("%s qid 0x%x\n", __func__, qid);
+ mutex_lock(&rdev->stats.lock);
+ if (rdev->stats.qid.cur > rdev->stats.qid.max)
+ rdev->stats.qid.max = rdev->stats.qid.cur;
+ mutex_unlock(&rdev->stats.lock);
return qid;
}
@@ -249,6 +256,9 @@ u32 c4iw_get_qpid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx)
&rdev->resource.qid_fifo_lock);
if (!qid)
goto out;
+ mutex_lock(&rdev->stats.lock);
+ rdev->stats.qid.cur += rdev->qpmask + 1;
+ mutex_unlock(&rdev->stats.lock);
for (i = qid+1; i & rdev->qpmask; i++) {
entry = kmalloc(sizeof *entry, GFP_KERNEL);
if (!entry)
@@ -277,6 +287,10 @@ u32 c4iw_get_qpid(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx)
out:
mutex_unlock(&uctx->lock);
PDBG("%s qid 0x%x\n", __func__, qid);
+ mutex_lock(&rdev->stats.lock);
+ if (rdev->stats.qid.cur > rdev->stats.qid.max)
+ rdev->stats.qid.max = rdev->stats.qid.cur;
+ mutex_unlock(&rdev->stats.lock);
return qid;
}
@@ -315,12 +329,22 @@ u32 c4iw_pblpool_alloc(struct c4iw_rdev *rdev, int size)
if (!addr)
printk_ratelimited(KERN_WARNING MOD "%s: Out of PBL memory\n",
pci_name(rdev->lldi.pdev));
+ if (addr) {
+ mutex_lock(&rdev->stats.lock);
+ rdev->stats.pbl.cur += roundup(size, 1 << MIN_PBL_SHIFT);
+ if (rdev->stats.pbl.cur > rdev->stats.pbl.max)
+ rdev->stats.pbl.max = rdev->stats.pbl.cur;
+ mutex_unlock(&rdev->stats.lock);
+ }
return (u32)addr;
}
void c4iw_pblpool_free(struct c4iw_rdev *rdev, u32 addr, int size)
{
PDBG("%s addr 0x%x size %d\n", __func__, addr, size);
+ mutex_lock(&rdev->stats.lock);
+ rdev->stats.pbl.cur -= roundup(size, 1 << MIN_PBL_SHIFT);
+ mutex_unlock(&rdev->stats.lock);
gen_pool_free(rdev->pbl_pool, (unsigned long)addr, size);
}
@@ -377,12 +401,22 @@ u32 c4iw_rqtpool_alloc(struct c4iw_rdev *rdev, int size)
if (!addr)
printk_ratelimited(KERN_WARNING MOD "%s: Out of RQT memory\n",
pci_name(rdev->lldi.pdev));
+ if (addr) {
+ mutex_lock(&rdev->stats.lock);
+ rdev->stats.rqt.cur += roundup(size << 6, 1 << MIN_RQT_SHIFT);
+ if (rdev->stats.rqt.cur > rdev->stats.rqt.max)
+ rdev->stats.rqt.max = rdev->stats.rqt.cur;
+ mutex_unlock(&rdev->stats.lock);
+ }
return (u32)addr;
}
void c4iw_rqtpool_free(struct c4iw_rdev *rdev, u32 addr, int size)
{
PDBG("%s addr 0x%x size %d\n", __func__, addr, size << 6);
+ mutex_lock(&rdev->stats.lock);
+ rdev->stats.rqt.cur -= roundup(size << 6, 1 << MIN_RQT_SHIFT);
+ mutex_unlock(&rdev->stats.lock);
gen_pool_free(rdev->rqt_pool, (unsigned long)addr, size << 6);
}
@@ -433,12 +467,22 @@ u32 c4iw_ocqp_pool_alloc(struct c4iw_rdev *rdev, int size)
{
unsigned long addr = gen_pool_alloc(rdev->ocqp_pool, size);
PDBG("%s addr 0x%x size %d\n", __func__, (u32)addr, size);
+ if (addr) {
+ mutex_lock(&rdev->stats.lock);
+ rdev->stats.ocqp.cur += roundup(size, 1 << MIN_OCQP_SHIFT);
+ if (rdev->stats.ocqp.cur > rdev->stats.ocqp.max)
+ rdev->stats.ocqp.max = rdev->stats.ocqp.cur;
+ mutex_unlock(&rdev->stats.lock);
+ }
return (u32)addr;
}
void c4iw_ocqp_pool_free(struct c4iw_rdev *rdev, u32 addr, int size)
{
PDBG("%s addr 0x%x size %d\n", __func__, addr, size);
+ mutex_lock(&rdev->stats.lock);
+ rdev->stats.ocqp.cur -= roundup(size, 1 << MIN_OCQP_SHIFT);
+ mutex_unlock(&rdev->stats.lock);
gen_pool_free(rdev->ocqp_pool, (unsigned long)addr, size);
}
--
1.7.1
--
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