[PATCH 08/16] IB/hfi1: Add MMU tracing
DORMANTno replies
REVIEWED: 2 (0M)
From: Dennis Dalessandro <hidden>
Date: 2016-03-08 19:14:59
Subsystem:
infiniband subsystem, the rest · Maintainers:
Jason Gunthorpe, Leon Romanovsky, Linus Torvalds
2 review trailers.
From: Mitko Haralanov <redacted> Add a new tracepoint type for the MMU functions and calls to that tracepoint to allow tracing of MMU functionality. Reviewed-by: Dennis Dalessandro <redacted> Reviewed-by: Dean Luick <redacted> Signed-off-by: Mitko Haralanov <redacted> Signed-off-by: Jubin John <redacted> --- drivers/infiniband/hw/hfi1/mmu_rb.c | 10 ++++++++++ drivers/infiniband/hw/hfi1/trace.c | 1 + drivers/infiniband/hw/hfi1/trace.h | 1 + 3 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/drivers/infiniband/hw/hfi1/mmu_rb.c b/drivers/infiniband/hw/hfi1/mmu_rb.c
index 540e267..c30373d 100644
--- a/drivers/infiniband/hw/hfi1/mmu_rb.c
+++ b/drivers/infiniband/hw/hfi1/mmu_rb.c@@ -157,6 +157,8 @@ int hfi1_mmu_rb_insert(struct rb_root *root, struct mmu_rb_node *mnode) return -EINVAL; spin_lock_irqsave(&handler->lock, flags); + hfi1_cdbg(MMU, "Inserting node addr 0x%llx, len %u", mnode->addr, + mnode->len); node = __mmu_rb_search(handler, mnode->addr, mnode->len); if (node) { ret = -EINVAL;
@@ -181,7 +183,11 @@ static struct mmu_rb_node *__mmu_rb_search(struct mmu_rb_handler *handler, { struct mmu_rb_node *node; + hfi1_cdbg(MMU, "Searching for addr 0x%llx, len %u", addr, len); node = __mmu_int_rb_iter_first(handler->root, addr, len); + if (node) + hfi1_cdbg(MMU, "Found node addr 0x%llx, len %u", node->addr, + node->len); return node; }
@@ -189,6 +195,8 @@ static void __mmu_rb_remove(struct mmu_rb_handler *handler, struct mmu_rb_node *node, bool arg) { /* Validity of handler and node pointers has been checked by caller. */ + hfi1_cdbg(MMU, "Removing node addr 0x%llx, len %u", node->addr, + node->len); __mmu_int_rb_remove(node, handler->root); if (handler->ops->remove) handler->ops->remove(handler->root, node, arg);
@@ -266,6 +274,8 @@ static void mmu_notifier_mem_invalidate(struct mmu_notifier *mn, spin_lock_irqsave(&handler->lock, flags); for (node = __mmu_int_rb_iter_first(root, start, end); node; node = __mmu_int_rb_iter_next(node, start, end)) { + hfi1_cdbg(MMU, "Invalidating node addr 0x%llx, len %u", + node->addr, node->len); if (handler->ops->invalidate(root, node)) __mmu_rb_remove(handler, node, true); }
diff --git a/drivers/infiniband/hw/hfi1/trace.c b/drivers/infiniband/hw/hfi1/trace.c
index 6821d7c..8b62fef 100644
--- a/drivers/infiniband/hw/hfi1/trace.c
+++ b/drivers/infiniband/hw/hfi1/trace.c@@ -232,3 +232,4 @@ __hfi1_trace_fn(DC8051); __hfi1_trace_fn(FIRMWARE); __hfi1_trace_fn(RCVCTRL); __hfi1_trace_fn(TID); +__hfi1_trace_fn(MMU);
diff --git a/drivers/infiniband/hw/hfi1/trace.h b/drivers/infiniband/hw/hfi1/trace.h
index 4d91c18..963dc94 100644
--- a/drivers/infiniband/hw/hfi1/trace.h
+++ b/drivers/infiniband/hw/hfi1/trace.h@@ -1340,6 +1340,7 @@ __hfi1_trace_def(DC8051); __hfi1_trace_def(FIRMWARE); __hfi1_trace_def(RCVCTRL); __hfi1_trace_def(TID); +__hfi1_trace_def(MMU); #define hfi1_cdbg(which, fmt, ...) \ __hfi1_trace_##which(__func__, fmt, ##__VA_ARGS__) --
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