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| author |   Ross Zwisler <ross.zwisler@linux.intel.com> | 2017-02-22 15:39:57 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-22 16:41:26 -0800 |
| commit | 653b2ea3396fda0b5e23a37b3356dd2ca82fe5c1 (patch) | |
| tree | 4f383b42124f84f8e8e6a3b319c61737e84e8974 /include/trace/events/fs_dax.h | |
| parent | dax: update MAINTAINERS entries for FS DAX (diff) | |
| download | linux-dev-653b2ea3396fda0b5e23a37b3356dd2ca82fe5c1.tar.xz linux-dev-653b2ea3396fda0b5e23a37b3356dd2ca82fe5c1.zip | |
dax: add tracepoints to dax_pmd_load_hole()
Add tracepoints to dax_pmd_load_hole(), following the same logging
conventions as the tracepoints in dax_iomap_pmd_fault().
Here is an example PMD fault showing the new tracepoints:
read_big-1478 [004] .... 238.242188: xfs_filemap_pmd_fault: dev 259:0 ino 0x1003
read_big-1478 [004] .... 238.242191: dax_pmd_fault: dev 259:0 ino 0x1003 shared ALLOW_RETRY|KILLABLE|USER address 0x10400000 vm_start 0x10200000 vm_end 0x10600000 pgoff 0x200 max_pgoff 0x1400
read_big-1478 [004] .... 238.242390: dax_pmd_load_hole: dev 259:0 ino 0x1003 shared address 0x10400000 zero_page ffffea0002c20000 radix_entry 0x1e
read_big-1478 [004] .... 238.242392: dax_pmd_fault_done: dev 259:0 ino 0x1003 shared ALLOW_RETRY|KILLABLE|USER address 0x10400000 vm_start 0x10200000 vm_end 0x10600000 pgoff 0x200 max_pgoff 0x1400 NOPAGE
Link: http://lkml.kernel.org/r/1484085142-2297-5-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 '')
| -rw-r--r-- | include/trace/events/fs_dax.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/include/trace/events/fs_dax.h b/include/trace/events/fs_dax.h index 58b0b5612683..43f1263131a4 100644 --- a/include/trace/events/fs_dax.h +++ b/include/trace/events/fs_dax.h @@ -61,6 +61,48 @@ DEFINE_EVENT(dax_pmd_fault_class, name, \ DEFINE_PMD_FAULT_EVENT(dax_pmd_fault); DEFINE_PMD_FAULT_EVENT(dax_pmd_fault_done); +DECLARE_EVENT_CLASS(dax_pmd_load_hole_class, + TP_PROTO(struct inode *inode, struct vm_area_struct *vma, + unsigned long address, struct page *zero_page, + void *radix_entry), + TP_ARGS(inode, vma, address, zero_page, radix_entry), + TP_STRUCT__entry( + __field(unsigned long, ino) + __field(unsigned long, vm_flags) + __field(unsigned long, address) + __field(struct page *, zero_page) + __field(void *, radix_entry) + __field(dev_t, dev) + ), + 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->zero_page = zero_page; + __entry->radix_entry = radix_entry; + ), + TP_printk("dev %d:%d ino %#lx %s address %#lx zero_page %p " + "radix_entry %#lx", + MAJOR(__entry->dev), + MINOR(__entry->dev), + __entry->ino, + __entry->vm_flags & VM_SHARED ? "shared" : "private", + __entry->address, + __entry->zero_page, + (unsigned long)__entry->radix_entry + ) +) + +#define DEFINE_PMD_LOAD_HOLE_EVENT(name) \ +DEFINE_EVENT(dax_pmd_load_hole_class, name, \ + TP_PROTO(struct inode *inode, struct vm_area_struct *vma, \ + unsigned long address, struct page *zero_page, \ + void *radix_entry), \ + TP_ARGS(inode, vma, address, zero_page, radix_entry)) + +DEFINE_PMD_LOAD_HOLE_EVENT(dax_pmd_load_hole); +DEFINE_PMD_LOAD_HOLE_EVENT(dax_pmd_load_hole_fallback); #endif /* _TRACE_FS_DAX_H */ |