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linux/include/trace/events/fs_dax.h
Linus Torvalds a3841f94c7 libnvdimm for 4.15 
* Introduce MAP_SYNC and MAP_SHARED_VALIDATE, a mechanism to enable
  'userspace flush' of persistent memory updates via filesystem-dax
   mappings. It arranges for any filesystem metadata updates that may be
   required to satisfy a write fault to also be flushed ("on disk") before
   the kernel returns to userspace from the fault handler. Effectively
   every write-fault that dirties metadata completes an fsync() before
   returning from the fault handler. The new MAP_SHARED_VALIDATE mapping
   type guarantees that the MAP_SYNC flag is validated as supported by the
   filesystem's ->mmap() file operation.
 
 * Add support for the standard ACPI 6.2 label access methods that
   replace the NVDIMM_FAMILY_INTEL (vendor specific) label methods. This
   enables interoperability with environments that only implement the
   standardized methods.
 
 * Add support for the ACPI 6.2 NVDIMM media error injection methods.
 
 * Add support for the NVDIMM_FAMILY_INTEL v1.6 DIMM commands for latch
   last shutdown status, firmware update, SMART error injection, and
   SMART alarm threshold control.
 
 * Cleanup physical address information disclosures to be root-only.
 
 * Fix revalidation of the DIMM "locked label area" status to support
   dynamic unlock of the label area.
 
 * Expand unit test infrastructure to mock the ACPI 6.2 Translate SPA
   (system-physical-address) command and error injection commands.
 
 Acknowledgements that came after the commits were pushed to -next:
 
 957ac8c421 dax: fix PMD faults on zero-length files
 Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
 
 a39e596baa xfs: support for synchronous DAX faults
 Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
 
 7b565c9f96 xfs: Implement xfs_filemap_pfn_mkwrite() using __xfs_filemap_fault()
 Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
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Merge tag 'libnvdimm-for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm and dax updates from Dan Williams:
 "Save for a few late fixes, all of these commits have shipped in -next
  releases since before the merge window opened, and 0day has given a
  build success notification.

  The ext4 touches came from Jan, and the xfs touches have Darrick's
  reviewed-by. An xfstest for the MAP_SYNC feature has been through
  a few round of reviews and is on track to be merged.

   - Introduce MAP_SYNC and MAP_SHARED_VALIDATE, a mechanism to enable
     'userspace flush' of persistent memory updates via filesystem-dax
     mappings. It arranges for any filesystem metadata updates that may
     be required to satisfy a write fault to also be flushed ("on disk")
     before the kernel returns to userspace from the fault handler.
     Effectively every write-fault that dirties metadata completes an
     fsync() before returning from the fault handler. The new
     MAP_SHARED_VALIDATE mapping type guarantees that the MAP_SYNC flag
     is validated as supported by the filesystem's ->mmap() file
     operation.

   - Add support for the standard ACPI 6.2 label access methods that
     replace the NVDIMM_FAMILY_INTEL (vendor specific) label methods.
     This enables interoperability with environments that only implement
     the standardized methods.

   - Add support for the ACPI 6.2 NVDIMM media error injection methods.

   - Add support for the NVDIMM_FAMILY_INTEL v1.6 DIMM commands for
     latch last shutdown status, firmware update, SMART error injection,
     and SMART alarm threshold control.

   - Cleanup physical address information disclosures to be root-only.

   - Fix revalidation of the DIMM "locked label area" status to support
     dynamic unlock of the label area.

   - Expand unit test infrastructure to mock the ACPI 6.2 Translate SPA
     (system-physical-address) command and error injection commands.

  Acknowledgements that came after the commits were pushed to -next:

   - 957ac8c421 ("dax: fix PMD faults on zero-length files"):
       Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>

   - a39e596baa ("xfs: support for synchronous DAX faults") and
     7b565c9f96 ("xfs: Implement xfs_filemap_pfn_mkwrite() using __xfs_filemap_fault()")
        Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>"

* tag 'libnvdimm-for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (49 commits)
  acpi, nfit: add 'Enable Latch System Shutdown Status' command support
  dax: fix general protection fault in dax_alloc_inode
  dax: fix PMD faults on zero-length files
  dax: stop requiring a live device for dax_flush()
  brd: remove dax support
  dax: quiet bdev_dax_supported()
  fs, dax: unify IOMAP_F_DIRTY read vs write handling policy in the dax core
  tools/testing/nvdimm: unit test clear-error commands
  acpi, nfit: validate commands against the device type
  tools/testing/nvdimm: stricter bounds checking for error injection commands
  xfs: support for synchronous DAX faults
  xfs: Implement xfs_filemap_pfn_mkwrite() using __xfs_filemap_fault()
  ext4: Support for synchronous DAX faults
  ext4: Simplify error handling in ext4_dax_huge_fault()
  dax: Implement dax_finish_sync_fault()
  dax, iomap: Add support for synchronous faults
  mm: Define MAP_SYNC and VM_SYNC flags
  dax: Allow tuning whether dax_insert_mapping_entry() dirties entry
  dax: Allow dax_iomap_fault() to return pfn
  dax: Fix comment describing dax_iomap_fault()
  ...
2017-11-17 09:51:57 -08:00

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/* SPDX-License-Identifier: GPL-2.0 */
#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_fault *vmf,
pgoff_t max_pgoff, int result),
TP_ARGS(inode, vmf, 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 = vmf->vma->vm_start;
__entry->vm_end = vmf->vma->vm_end;
__entry->vm_flags = vmf->vma->vm_flags;
__entry->address = vmf->address;
__entry->flags = vmf->flags;
__entry->pgoff = vmf->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_fault *vmf, \
pgoff_t max_pgoff, int result), \
TP_ARGS(inode, vmf, 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_fault *vmf,
struct page *zero_page,
void *radix_entry),
TP_ARGS(inode, vmf, 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 = vmf->vma->vm_flags;
__entry->address = vmf->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_fault *vmf, \
struct page *zero_page, void *radix_entry), \
TP_ARGS(inode, vmf, 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_fault *vmf,
long length, pfn_t pfn, void *radix_entry),
TP_ARGS(inode, vmf, 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 = vmf->vma->vm_flags;
__entry->address = vmf->address;
__entry->write = vmf->flags & FAULT_FLAG_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_fault *vmf, \
long length, pfn_t pfn, void *radix_entry), \
TP_ARGS(inode, vmf, length, pfn, radix_entry))
DEFINE_PMD_INSERT_MAPPING_EVENT(dax_pmd_insert_mapping);
DECLARE_EVENT_CLASS(dax_pte_fault_class,
TP_PROTO(struct inode *inode, struct vm_fault *vmf, int result),
TP_ARGS(inode, vmf, result),
TP_STRUCT__entry(
__field(unsigned long, ino)
__field(unsigned long, vm_flags)
__field(unsigned long, address)
__field(pgoff_t, 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_flags = vmf->vma->vm_flags;
__entry->address = vmf->address;
__entry->flags = vmf->flags;
__entry->pgoff = vmf->pgoff;
__entry->result = result;
),
TP_printk("dev %d:%d ino %#lx %s %s address %#lx 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->pgoff,
__print_flags(__entry->result, "|", VM_FAULT_RESULT_TRACE)
)
)
#define DEFINE_PTE_FAULT_EVENT(name) \
DEFINE_EVENT(dax_pte_fault_class, name, \
TP_PROTO(struct inode *inode, struct vm_fault *vmf, int result), \
TP_ARGS(inode, vmf, result))
DEFINE_PTE_FAULT_EVENT(dax_pte_fault);
DEFINE_PTE_FAULT_EVENT(dax_pte_fault_done);
DEFINE_PTE_FAULT_EVENT(dax_load_hole);
DEFINE_PTE_FAULT_EVENT(dax_insert_pfn_mkwrite_no_entry);
DEFINE_PTE_FAULT_EVENT(dax_insert_pfn_mkwrite);
TRACE_EVENT(dax_insert_mapping,
TP_PROTO(struct inode *inode, struct vm_fault *vmf, void *radix_entry),
TP_ARGS(inode, vmf, radix_entry),
TP_STRUCT__entry(
__field(unsigned long, ino)
__field(unsigned long, vm_flags)
__field(unsigned long, address)
__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 = vmf->vma->vm_flags;
__entry->address = vmf->address;
__entry->write = vmf->flags & FAULT_FLAG_WRITE;
__entry->radix_entry = radix_entry;
),
TP_printk("dev %d:%d ino %#lx %s %s address %#lx radix_entry %#lx",
MAJOR(__entry->dev),
MINOR(__entry->dev),
__entry->ino,
__entry->vm_flags & VM_SHARED ? "shared" : "private",
__entry->write ? "write" : "read",
__entry->address,
(unsigned long)__entry->radix_entry
)
)
DECLARE_EVENT_CLASS(dax_writeback_range_class,
TP_PROTO(struct inode *inode, pgoff_t start_index, pgoff_t end_index),
TP_ARGS(inode, start_index, end_index),
TP_STRUCT__entry(
__field(unsigned long, ino)
__field(pgoff_t, start_index)
__field(pgoff_t, end_index)
__field(dev_t, dev)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->start_index = start_index;
__entry->end_index = end_index;
),
TP_printk("dev %d:%d ino %#lx pgoff %#lx-%#lx",
MAJOR(__entry->dev),
MINOR(__entry->dev),
__entry->ino,
__entry->start_index,
__entry->end_index
)
)
#define DEFINE_WRITEBACK_RANGE_EVENT(name) \
DEFINE_EVENT(dax_writeback_range_class, name, \
TP_PROTO(struct inode *inode, pgoff_t start_index, pgoff_t end_index),\
TP_ARGS(inode, start_index, end_index))
DEFINE_WRITEBACK_RANGE_EVENT(dax_writeback_range);
DEFINE_WRITEBACK_RANGE_EVENT(dax_writeback_range_done);
TRACE_EVENT(dax_writeback_one,
TP_PROTO(struct inode *inode, pgoff_t pgoff, pgoff_t pglen),
TP_ARGS(inode, pgoff, pglen),
TP_STRUCT__entry(
__field(unsigned long, ino)
__field(pgoff_t, pgoff)
__field(pgoff_t, pglen)
__field(dev_t, dev)
),
TP_fast_assign(
__entry->dev = inode->i_sb->s_dev;
__entry->ino = inode->i_ino;
__entry->pgoff = pgoff;
__entry->pglen = pglen;
),
TP_printk("dev %d:%d ino %#lx pgoff %#lx pglen %#lx",
MAJOR(__entry->dev),
MINOR(__entry->dev),
__entry->ino,
__entry->pgoff,
__entry->pglen
)
)
#endif /* _TRACE_FS_DAX_H */
/* This part must be outside protection */
#include <trace/define_trace.h>
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