From 653b2ea3396fda0b5e23a37b3356dd2ca82fe5c1 Mon Sep 17 00:00:00 2001 From: Ross Zwisler Date: Wed, 22 Feb 2017 15:39:57 -0800 Subject: 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 Reviewed-by: Jan Kara Acked-by: Steven Rostedt Cc: Dave Chinner Cc: Dave Jiang Cc: Matthew Wilcox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/trace/events/fs_dax.h | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) (limited to 'include/trace') 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 */ -- cgit v1.2.3