From 678c9fd0430a1431bd9901c76f41e04fcb3eac87 Mon Sep 17 00:00:00 2001
From: Ross Zwisler <ross.zwisler@linux.intel.com>
Date: Mon, 8 May 2017 16:00:07 -0700
Subject: dax: add tracepoints to dax_load_hole()
Add tracepoints to dax_load_hole(), following the same logging conventions
as the rest of DAX.
Here is the logging generated by a PTE read from a hole:
read-1075 [002] ....
62.362108: dax_pte_fault: dev 259:0 ino 0x1003 shared ALLOW_RETRY|KILLABLE|USER address 0x10480000 pgoff 0x280
read-1075 [002] ....
62.362140: dax_load_hole: dev 259:0 ino 0x1003 shared ALLOW_RETRY|KILLABLE|USER address 0x10480000 pgoff 0x280 NOPAGE
read-1075 [002] ....
62.362141: dax_pte_fault_done: dev 259:0 ino 0x1003 shared ALLOW_RETRY|KILLABLE|USER address 0x10480000 pgoff 0x280 NOPAGE
Link: http://lkml.kernel.org/r/20170221195116.13278-4-ross.zwisler@linux.intel.com
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
include/trace/events/fs_dax.h | 1 +
1 file changed, 1 insertion(+)
(limited to 'include')
diff --git a/include/trace/events/fs_dax.h b/include/trace/events/fs_dax.h
index b5a520961f8d..2f15dfea7fb1 100644
--- a/include/trace/events/fs_dax.h
+++ b/include/trace/events/fs_dax.h
@@ -192,6 +192,7 @@ DEFINE_PTE_FAULT_EVENT(dax_pte_fault);
DEFINE_PTE_FAULT_EVENT(dax_pte_fault_done);
DEFINE_PTE_FAULT_EVENT(dax_pfn_mkwrite_no_entry);
DEFINE_PTE_FAULT_EVENT(dax_pfn_mkwrite);
+DEFINE_PTE_FAULT_EVENT(dax_load_hole);
#endif /* _TRACE_FS_DAX_H */
--
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