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linux/include/trace/events/fs_dax.h
Ross Zwisler 27a7ffaccd 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>
2017-02-22 16:41:26 -08:00

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#undef TRACE_SYSTEM
#define TRACE_SYSTEM fs_dax
#if !defined(_TRACE_FS_DAX_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_FS_DAX_H
#include <linux/tracepoint.h>
DECLARE_EVENT_CLASS(dax_pmd_fault_class,
TP_PROTO(struct inode *inode, struct vm_area_struct *vma,
unsigned long address, unsigned int flags, pgoff_t pgoff,
pgoff_t max_pgoff, int result),
TP_ARGS(inode, vma, address, flags, pgoff, max_pgoff, result),
TP_STRUCT__entry(
__field(unsigned long, ino)
__field(unsigned long, vm_start)
__field(unsigned long, vm_end)
__field(unsigned long, vm_flags)
__field(unsigned long, address)
__field(pgoff_t, pgoff)
__field(pgoff_t, max_pgoff)
__field(dev_t, dev)
__field(unsigned int, flags)
__field(int, result)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->vm_start = vma->vm_start;
__entry->vm_end = vma->vm_end;
__entry->vm_flags = vma->vm_flags;
__entry->address = address;
__entry->flags = flags;
__entry->pgoff = pgoff;
__entry->max_pgoff = max_pgoff;
__entry->result = result;
),
TP_printk("dev %d:%d ino %#lx %s %s address %#lx vm_start "
"%#lx vm_end %#lx pgoff %#lx max_pgoff %#lx %s",
MAJOR(__entry->dev),
MINOR(__entry->dev),
__entry->ino,
__entry->vm_flags & VM_SHARED ? "shared" : "private",
__print_flags(__entry->flags, "|", FAULT_FLAG_TRACE),
__entry->address,
__entry->vm_start,
__entry->vm_end,
__entry->pgoff,
__entry->max_pgoff,
__print_flags(__entry->result, "|", VM_FAULT_RESULT_TRACE)
)
)
#define DEFINE_PMD_FAULT_EVENT(name) \
DEFINE_EVENT(dax_pmd_fault_class, name, \
TP_PROTO(struct inode *inode, struct vm_area_struct *vma, \
unsigned long address, unsigned int flags, pgoff_t pgoff, \
pgoff_t max_pgoff, int result), \
TP_ARGS(inode, vma, address, flags, pgoff, max_pgoff, result))
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);
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 */
#include <trace/define_trace.h>
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