summaryrefslogtreecommitdiff
path: root/include
diff options
context:
space:
mode:
authorRoss Zwisler <ross.zwisler@linux.intel.com>2017-02-23 02:40:00 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-23 03:41:26 +0300
commit27a7ffaccd915675c88045ba83493804a0267ab7 (patch)
treef53228b40b5d4901b86a21fe84bbe7a321372619 /include
parent653b2ea3396fda0b5e23a37b3356dd2ca82fe5c1 (diff)
downloadlinux-27a7ffaccd915675c88045ba83493804a0267ab7.tar.xz
dax: add tracepoints to dax_pmd_insert_mapping()
Add tracepoints to dax_pmd_insert_mapping(), following the same logging conventions as the tracepoints in dax_iomap_pmd_fault(). Here is an example PMD fault showing the new tracepoints: big-1504 [001] .... 326.960743: xfs_filemap_pmd_fault: dev 259:0 ino 0x1003 big-1504 [001] .... 326.960753: dax_pmd_fault: dev 259:0 ino 0x1003 shared WRITE|ALLOW_RETRY|KILLABLE|USER address 0x10505000 vm_start 0x10200000 vm_end 0x10700000 pgoff 0x200 max_pgoff 0x1400 big-1504 [001] .... 326.960981: dax_pmd_insert_mapping: dev 259:0 ino 0x1003 shared write address 0x10505000 length 0x200000 pfn 0x100600 DEV|MAP radix_entry 0xc000e big-1504 [001] .... 326.960986: dax_pmd_fault_done: dev 259:0 ino 0x1003 shared WRITE|ALLOW_RETRY|KILLABLE|USER address 0x10505000 vm_start 0x10200000 vm_end 0x10700000 pgoff 0x200 max_pgoff 0x1400 NOPAGE Link: http://lkml.kernel.org/r/1484085142-2297-6-git-send-email-ross.zwisler@linux.intel.com Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Dave Chinner <david@fromorbit.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/pfn_t.h6
-rw-r--r--include/trace/events/fs_dax.h51
2 files changed, 57 insertions, 0 deletions
diff --git a/include/linux/pfn_t.h b/include/linux/pfn_t.h
index a3d90b9da18d..033fc7bbcefa 100644
--- a/include/linux/pfn_t.h
+++ b/include/linux/pfn_t.h
@@ -15,6 +15,12 @@
#define PFN_DEV (1ULL << (BITS_PER_LONG_LONG - 3))
#define PFN_MAP (1ULL << (BITS_PER_LONG_LONG - 4))
+#define PFN_FLAGS_TRACE \
+ { PFN_SG_CHAIN, "SG_CHAIN" }, \
+ { PFN_SG_LAST, "SG_LAST" }, \
+ { PFN_DEV, "DEV" }, \
+ { PFN_MAP, "MAP" }
+
static inline pfn_t __pfn_to_pfn_t(unsigned long pfn, u64 flags)
{
pfn_t pfn_t = { .val = pfn | (flags & PFN_FLAGS_MASK), };
diff --git a/include/trace/events/fs_dax.h b/include/trace/events/fs_dax.h
index 43f1263131a4..c3b0aae216dc 100644
--- a/include/trace/events/fs_dax.h
+++ b/include/trace/events/fs_dax.h
@@ -104,6 +104,57 @@ DEFINE_EVENT(dax_pmd_load_hole_class, name, \
DEFINE_PMD_LOAD_HOLE_EVENT(dax_pmd_load_hole);
DEFINE_PMD_LOAD_HOLE_EVENT(dax_pmd_load_hole_fallback);
+DECLARE_EVENT_CLASS(dax_pmd_insert_mapping_class,
+ TP_PROTO(struct inode *inode, struct vm_area_struct *vma,
+ unsigned long address, int write, long length, pfn_t pfn,
+ void *radix_entry),
+ TP_ARGS(inode, vma, address, write, length, pfn, radix_entry),
+ TP_STRUCT__entry(
+ __field(unsigned long, ino)
+ __field(unsigned long, vm_flags)
+ __field(unsigned long, address)
+ __field(long, length)
+ __field(u64, pfn_val)
+ __field(void *, radix_entry)
+ __field(dev_t, dev)
+ __field(int, write)
+ ),
+ TP_fast_assign(
+ __entry->dev = inode->i_sb->s_dev;
+ __entry->ino = inode->i_ino;
+ __entry->vm_flags = vma->vm_flags;
+ __entry->address = address;
+ __entry->write = write;
+ __entry->length = length;
+ __entry->pfn_val = pfn.val;
+ __entry->radix_entry = radix_entry;
+ ),
+ TP_printk("dev %d:%d ino %#lx %s %s address %#lx length %#lx "
+ "pfn %#llx %s radix_entry %#lx",
+ MAJOR(__entry->dev),
+ MINOR(__entry->dev),
+ __entry->ino,
+ __entry->vm_flags & VM_SHARED ? "shared" : "private",
+ __entry->write ? "write" : "read",
+ __entry->address,
+ __entry->length,
+ __entry->pfn_val & ~PFN_FLAGS_MASK,
+ __print_flags_u64(__entry->pfn_val & PFN_FLAGS_MASK, "|",
+ PFN_FLAGS_TRACE),
+ (unsigned long)__entry->radix_entry
+ )
+)
+
+#define DEFINE_PMD_INSERT_MAPPING_EVENT(name) \
+DEFINE_EVENT(dax_pmd_insert_mapping_class, name, \
+ TP_PROTO(struct inode *inode, struct vm_area_struct *vma, \
+ unsigned long address, int write, long length, pfn_t pfn, \
+ void *radix_entry), \
+ TP_ARGS(inode, vma, address, write, length, pfn, radix_entry))
+
+DEFINE_PMD_INSERT_MAPPING_EVENT(dax_pmd_insert_mapping);
+DEFINE_PMD_INSERT_MAPPING_EVENT(dax_pmd_insert_mapping_fallback);
+
#endif /* _TRACE_FS_DAX_H */
/* This part must be outside protection */