From: Quinn Tran <quinn.tran@xxxxxxxxxx>
> cat /sys/kernel/debug/qla2xxx/*/irq_cpuid
qla2xxx_81
IRQ Name Vector CPUID
qla2xxx (default) 150 9
qla2xxx (rsp_q) 151 9
qla2xxx (atio_q) 152 9
Signed-off-by: Quinn Tran <quinn.tran@xxxxxxxxxx>
Signed-off-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_def.h | 2 +
drivers/scsi/qla2xxx/qla_dfs.c | 49 ++++++++++++++++++++++++++++++++++++++++
drivers/scsi/qla2xxx/qla_isr.c | 16 +++++++++++++
3 files changed, 67 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index e6c5bcf..c6cc519 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -2722,6 +2722,7 @@ struct qla_msix_entry {
int have_irq;
uint32_t vector;
uint16_t entry;
+ const char *name;
struct rsp_que *rsp;
struct irq_affinity_notify irq_notify;
int cpuid;
@@ -3377,6 +3378,7 @@ struct qla_hw_data {
struct dentry *dfs_fce;
struct dentry *dfs_tgt_counters;
struct dentry *dfs_fw_resource_cnt;
+ struct dentry *dfs_irq_cpuid;
dma_addr_t fce_dma;
void *fce;
diff --git a/drivers/scsi/qla2xxx/qla_dfs.c b/drivers/scsi/qla2xxx/qla_dfs.c
index 34272fd..4ff17f6 100644
--- a/drivers/scsi/qla2xxx/qla_dfs.c
+++ b/drivers/scsi/qla2xxx/qla_dfs.c
@@ -13,6 +13,41 @@ static struct dentry *qla2x00_dfs_root;
static atomic_t qla2x00_dfs_root_count;
static int
+qla2x00_dfs_irq_cpuid_show(struct seq_file *s, void *unused)
+{
+ scsi_qla_host_t *vha = s->private;
+ struct qla_hw_data *ha = vha->hw;
+ struct qla_msix_entry *qentry;
+ int i;
+
+ seq_printf(s, "%s\n",vha->host_str);
+ seq_printf(s, "%20s Vector CPUID\n","IRQ Name");
+
+ for (i = 0; i < ha->msix_count; i++) {
+ qentry = &ha->msix_entries[i];
+ if (qentry->have_irq)
+ seq_printf(s, "%20s %3d %d\n", qentry->name,
+ qentry->vector, qentry->cpuid);
+ }
+
+ return 0;
+}
+
+static int
+qla2x00_dfs_irq_cpuid_open(struct inode *inode, struct file *file)
+{
+ scsi_qla_host_t *vha = inode->i_private;
+ return single_open(file, qla2x00_dfs_irq_cpuid_show, vha);
+}
+
+static const struct file_operations dfs_irq_cpuid_ops = {
+ .open = qla2x00_dfs_irq_cpuid_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int
qla2x00_dfs_tgt_sess_show(struct seq_file *s, void *unused)
{
scsi_qla_host_t *vha = s->private;
@@ -298,6 +333,15 @@ create_nodes:
goto out;
}
+ ha->dfs_irq_cpuid = debugfs_create_file("irq_cpuid",
+ S_IRUSR, ha->dfs_dir, vha, &dfs_irq_cpuid_ops);
+ if (!ha->dfs_irq_cpuid) {
+ ql_log(ql_log_warn, vha, 0xffff,
+ "Unable to create debugFS irq_cpuid node.\n");
+ goto out;
+ }
+
+
out:
return 0;
}
@@ -307,6 +351,11 @@ qla2x00_dfs_remove(scsi_qla_host_t *vha)
{
struct qla_hw_data *ha = vha->hw;
+ if (ha->dfs_irq_cpuid) {
+ debugfs_remove(ha->dfs_irq_cpuid);
+ ha->dfs_irq_cpuid = NULL;
+ }
+
if (ha->tgt.dfs_tgt_sess) {
debugfs_remove(ha->tgt.dfs_tgt_sess);
ha->tgt.dfs_tgt_sess = NULL;
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 4af9547..d527189 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -3102,6 +3102,7 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
goto msix_register_fail;
qentry->have_irq = 1;
qentry->rsp = rsp;
+ qentry->name = msix_entries[i].name;
rsp->msix = qentry;
/* Register for CPU affinity notification. */
@@ -3128,7 +3129,22 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
0, qla83xx_msix_entries[ATIO_VECTOR].name, rsp);
qentry->have_irq = 1;
qentry->rsp = rsp;
+ qentry->name = qla83xx_msix_entries[ATIO_VECTOR].name;
+ qentry->irq_notify.notify = qla_irq_affinity_notify;
+ qentry->irq_notify.release = qla_irq_affinity_release;
rsp->msix = qentry;
+
+ /* Register for CPU affinity notification. */
+ irq_set_affinity_notifier(qentry->vector, &qentry->irq_notify);
+
+ /* Schedule work (ie. trigger a notification) to read cpu
+ * mask for this specific irq.
+ * kref_get is required because
+ * irq_affinity_notify() will do
+ * kref_put().
+ */
+ kref_get(&qentry->irq_notify.kref);
+ schedule_work(&qentry->irq_notify.work);
}
msix_register_fail:
--
1.7.7
--
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