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IB/qib: Convert opcode counters to per-context

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This fix changes the opcode relative counters for receive to per
context.

Profiling has shown that when mulitple contexts are being used there
is a lot of cache activity associated with these counters.

The code formerly kept these counters per port, but only provided the
interface to read per HCA.  This patch converts the read of counters
to per HCA and adds the debugfs hooks to be able to read the file as a
sequence of opcodes.

Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Mike Marciniszyn
2013-06-15 17:07:03 -04:00
committed by Roland Dreier
parent 85caafe307
commit ddb8876589
8 changed files with 284 additions and 23 deletions
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41
drivers/infiniband/hw/qib/qib_init.c
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@@ -46,6 +46,10 @@
#include "qib.h"
#include "qib_common.h"
#include "qib_mad.h"
#ifdef CONFIG_DEBUG_FS
#include "qib_debugfs.h"
#include "qib_verbs.h"
#endif
#undef pr_fmt
#define pr_fmt(fmt) QIB_DRV_NAME ": " fmt
@@ -188,7 +192,18 @@ struct qib_ctxtdata *qib_create_ctxtdata(struct qib_pportdata *ppd, u32 ctxt,
rcd->cnt = 1;
rcd->ctxt = ctxt;
dd->rcd[ctxt] = rcd;
#ifdef CONFIG_DEBUG_FS
if (ctxt < dd->first_user_ctxt) { /* N/A for PSM contexts */
rcd->opstats = kzalloc_node(sizeof(*rcd->opstats),
GFP_KERNEL, node_id);
if (!rcd->opstats) {
kfree(rcd);
qib_dev_err(dd,
"Unable to allocate per ctxt stats buffer\n");
return NULL;
}
}
#endif
dd->f_init_ctxt(rcd);
/*
@@ -959,6 +974,10 @@ void qib_free_ctxtdata(struct qib_devdata *dd, struct qib_ctxtdata *rcd)
vfree(rcd->subctxt_uregbase);
vfree(rcd->subctxt_rcvegrbuf);
vfree(rcd->subctxt_rcvhdr_base);
#ifdef CONFIG_DEBUG_FS
kfree(rcd->opstats);
rcd->opstats = NULL;
#endif
kfree(rcd);
}
@@ -1048,7 +1067,6 @@ done:
dd->f_set_armlaunch(dd, 1);
}
void qib_free_devdata(struct qib_devdata *dd)
{
unsigned long flags;
@@ -1058,6 +1076,9 @@ void qib_free_devdata(struct qib_devdata *dd)
list_del(&dd->list);
spin_unlock_irqrestore(&qib_devs_lock, flags);
#ifdef CONFIG_DEBUG_FS
qib_dbg_ibdev_exit(&dd->verbs_dev);
#endif
ib_dealloc_device(&dd->verbs_dev.ibdev);
}
@@ -1081,6 +1102,10 @@ struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra)
goto bail;
}
#ifdef CONFIG_DEBUG_FS
qib_dbg_ibdev_init(&dd->verbs_dev);
#endif
idr_preload(GFP_KERNEL);
spin_lock_irqsave(&qib_devs_lock, flags);
@@ -1096,6 +1121,9 @@ struct qib_devdata *qib_alloc_devdata(struct pci_dev *pdev, size_t extra)
if (ret < 0) {
qib_early_err(&pdev->dev,
"Could not allocate unit ID: error %d\n", -ret);
#ifdef CONFIG_DEBUG_FS
qib_dbg_ibdev_exit(&dd->verbs_dev);
#endif
ib_dealloc_device(&dd->verbs_dev.ibdev);
dd = ERR_PTR(ret);
goto bail;
@@ -1222,6 +1250,9 @@ static int __init qlogic_ib_init(void)
#ifdef CONFIG_INFINIBAND_QIB_DCA
dca_register_notify(&dca_notifier);
#endif
#ifdef CONFIG_DEBUG_FS
qib_dbg_init();
#endif
ret = pci_register_driver(&qib_driver);
if (ret < 0) {
@@ -1237,6 +1268,9 @@ static int __init qlogic_ib_init(void)
bail_dev:
#ifdef CONFIG_INFINIBAND_QIB_DCA
dca_unregister_notify(&dca_notifier);
#endif
#ifdef CONFIG_DEBUG_FS
qib_dbg_exit();
#endif
idr_destroy(&qib_unit_table);
qib_dev_cleanup();
@@ -1263,6 +1297,9 @@ static void __exit qlogic_ib_cleanup(void)
dca_unregister_notify(&dca_notifier);
#endif
pci_unregister_driver(&qib_driver);
#ifdef CONFIG_DEBUG_FS
qib_dbg_exit();
#endif
qib_cpulist_count = 0;
kfree(qib_cpulist);