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IB/hfi1: Add mmu_rb_node refcount to hfi1_mmu_rb_template tracepoints

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Add kref_read() of mmu_rb_node.refcount in hfi1_mmu_rb_template-type
tracepoint output.

Change hfi1_mmu_rb_template tracepoint to take a struct mmu_rb_node* and
record the values it needs from that. This makes the trace_hfi1_mmu*()
calls shorter and easier to read.

Add hfi1_mmu_release_node() tracepoint before all
mmu_rb_node->handler->ops->remove() calls.

Make hfi1_mmu_rb_search() tracepoint its own tracepoint type separate
from hfi1_mmu_rb_template since hfi1_mmu_rb_search() does not take a
struct mmu_rb_node*.

Link: https://lore.kernel.org/r/168451525987.3702129.12824880387615916700.stgit@awfm-02.cornelisnetworks.com
Reviewed-by: Dean Luick <dean.luick@cornelisnetworks.com>
Signed-off-by: Brendan Cunningham <bcunningham@cornelisnetworks.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Brendan Cunningham
2023-05-19 12:54:19 -04:00
committed by Jason Gunthorpe
parent c9358de193
commit e236e2eae5
2 changed files with 40 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/infiniband/hw/hfi1/mmu_rb.c
View File

@@ -124,7 +124,7 @@ int hfi1_mmu_rb_insert(struct mmu_rb_handler *handler,
unsigned long flags;
int ret = 0;
trace_hfi1_mmu_rb_insert(mnode->addr, mnode->len);
trace_hfi1_mmu_rb_insert(mnode);
if (current->mm != handler->mn.mm)
return -EPERM;
@@ -189,6 +189,7 @@ static void release_immediate(struct kref *refcount)
{
struct mmu_rb_node *mnode =
container_of(refcount, struct mmu_rb_node, refcount);
trace_hfi1_mmu_release_node(mnode);
mnode->handler->ops->remove(mnode->handler->ops_arg, mnode);
}
@@ -252,6 +253,7 @@ void hfi1_mmu_rb_evict(struct mmu_rb_handler *handler, void *evict_arg)
spin_unlock_irqrestore(&handler->lock, flags);
list_for_each_entry_safe(rbnode, ptr, &del_list, list) {
trace_hfi1_mmu_rb_evict(rbnode);
kref_put(&rbnode->refcount, release_immediate);
}
}
@@ -271,7 +273,7 @@ static int mmu_notifier_range_start(struct mmu_notifier *mn,
/* Guard against node removal. */
ptr = __mmu_int_rb_iter_next(node, range->start,
range->end - 1);
trace_hfi1_mmu_mem_invalidate(node->addr, node->len);
trace_hfi1_mmu_mem_invalidate(node);
/* Remove from rb tree and lru_list. */
__mmu_int_rb_remove(node, root);
list_del_init(&node->list);
@@ -304,6 +306,7 @@ static void handle_remove(struct work_struct *work)
while (!list_empty(&del_list)) {
node = list_first_entry(&del_list, struct mmu_rb_node, list);
list_del(&node->list);
trace_hfi1_mmu_release_node(node);
handler->ops->remove(handler->ops_arg, node);
}
}

48
drivers/infiniband/hw/hfi1/trace_mmu.h
View File

@@ -15,31 +15,53 @@
#define TRACE_SYSTEM hfi1_mmu
DECLARE_EVENT_CLASS(hfi1_mmu_rb_template,
TP_PROTO(unsigned long addr, unsigned long len),
TP_ARGS(addr, len),
TP_PROTO(struct mmu_rb_node *node),
TP_ARGS(node),
TP_STRUCT__entry(__field(unsigned long, addr)
__field(unsigned long, len)
__field(unsigned int, refcount)
),
TP_fast_assign(__entry->addr = addr;
__entry->len = len;
TP_fast_assign(__entry->addr = node->addr;
__entry->len = node->len;
__entry->refcount = kref_read(&node->refcount);
),
TP_printk("MMU node addr 0x%lx, len %lu",
TP_printk("MMU node addr 0x%lx, len %lu, refcount %u",
__entry->addr,
__entry->len
__entry->len,
__entry->refcount
)
);
DEFINE_EVENT(hfi1_mmu_rb_template, hfi1_mmu_rb_insert,
TP_PROTO(unsigned long addr, unsigned long len),
TP_ARGS(addr, len));
TP_PROTO(struct mmu_rb_node *node),
TP_ARGS(node));
DEFINE_EVENT(hfi1_mmu_rb_template, hfi1_mmu_rb_search,
TP_PROTO(unsigned long addr, unsigned long len),
TP_ARGS(addr, len));
TRACE_EVENT(hfi1_mmu_rb_search,
TP_PROTO(unsigned long addr, unsigned long len),
TP_ARGS(addr, len),
TP_STRUCT__entry(__field(unsigned long, addr)
__field(unsigned long, len)
),
TP_fast_assign(__entry->addr = addr;
__entry->len = len;
),
TP_printk("MMU node addr 0x%lx, len %lu",
__entry->addr,
__entry->len
)
);
DEFINE_EVENT(hfi1_mmu_rb_template, hfi1_mmu_mem_invalidate,
TP_PROTO(unsigned long addr, unsigned long len),
TP_ARGS(addr, len));
TP_PROTO(struct mmu_rb_node *node),
TP_ARGS(node));
DEFINE_EVENT(hfi1_mmu_rb_template, hfi1_mmu_rb_evict,
TP_PROTO(struct mmu_rb_node *node),
TP_ARGS(node));
DEFINE_EVENT(hfi1_mmu_rb_template, hfi1_mmu_release_node,
TP_PROTO(struct mmu_rb_node *node),
TP_ARGS(node));
#endif /* __HFI1_TRACE_RC_H */