diff options
| author | Ross Zwisler <ross.zwisler@linux.intel.com> | 2017-05-08 16:00:16 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-08 17:15:16 -0700 |
| commit | b4440734583c3addf80558e8fde2b61e2d76328c (patch) | |
| tree | ca70107c520065f047a62288e5b0c5f877ab3628 /fs | |
| parent | f9bc3a07539bc80b4da9ff2f5d6c13d5c7a4f073 (diff) | |
| download | linux-b4440734583c3addf80558e8fde2b61e2d76328c.tar.gz | |
dax: add tracepoint to dax_insert_mapping()
Add a tracepoint to dax_insert_mapping(), following the same logging conventions as the rest of DAX. This tracepoint, along with the one in dax_load_hole(), lets us know how a DAX PTE fault was serviced. Here is an example DAX fault that inserts a PTE mapping: small-1126 [007] .... 145.451604: dax_pte_fault: dev 259:0 ino 0x1003 shared WRITE|ALLOW_RETRY|KILLABLE|USER address 0x10420000 pgoff 0x220 small-1126 [007] .... 145.452317: dax_insert_mapping: dev 259:0 ino 0x1003 shared write address 0x10420000 radix_entry 0x100006 small-1126 [007] .... 145.452399: dax_pte_fault_done: dev 259:0 ino 0x1003 shared WRITE|ALLOW_RETRY|KILLABLE|USER address 0x10420000 pgoff 0x220 MAJOR|NOPAGE Link: http://lkml.kernel.org/r/20170221195116.13278-7-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>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/dax.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/dax.c b/fs/dax.c index 9bec30e06211..66d79067eedf 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -925,6 +925,7 @@ static int dax_insert_mapping(struct address_space *mapping, return PTR_ERR(ret); *entryp = ret; + trace_dax_insert_mapping(mapping->host, vmf, ret); return vm_insert_mixed(vma, vaddr, pfn); } |