Commit Graph

34 Commits

Author SHA1 Message Date
Darrick J. Wong
6ca444cfd6 xfs: prepare xfs_btree_cur for dynamic cursor heights
Split out the btree level information into a separate struct and put it
at the end of the cursor structure as a VLA.  Files with huge data forks
(and in the future, the realtime rmap btree) will require the ability to
support many more levels than a per-AG btree cursor, which means that
we're going to create per-btree type cursor caches to conserve memory
for the more common case.

Note that a subsequent patch actually introduces dynamic cursor heights.
This one merely rearranges the structure to prepare for that.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2021-10-19 11:45:14 -07:00
Darrick J. Wong
e5f2e54a90 xfs: start documenting common units and tags used in tracepoints
Because there are a lot of tracepoints that express numeric data with
an associated unit and tag, document what they are to help everyone else
keep these thigns straight.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
2021-08-19 10:07:11 -07:00
Darrick J. Wong
c03e4b9e6b xfs: decode scrub flags in ftrace output
When using pretty-printed scrub tracepoints, decode the meaning of the
scrub flags as strings for easier reading.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
2021-08-19 10:07:11 -07:00
Darrick J. Wong
b641851cb8 xfs: standardize inode generation formatting in ftrace output
Always print inode generation in hexadecimal and preceded with the unit
"gen".

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
2021-08-19 10:07:11 -07:00
Darrick J. Wong
f93f85f77a xfs: resolve fork names in trace output
Emit whichfork values as text strings in the ftrace output.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
2021-08-19 10:07:10 -07:00
Darrick J. Wong
7989accc6e xfs: disambiguate units for ftrace fields tagged "len"
Some of our tracepoints have a field known as "len".  That name doesn't
describe any units, which makes the fields not very useful.  Rename the
fields to capture units and ensure the format is hexadecimal.

"fsbcount" are in units of fs blocks
"bbcount" are in units of 512b blocks
"ireccount" are in units of inodes

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
2021-08-19 10:07:10 -07:00
Darrick J. Wong
49e68c91da xfs: disambiguate units for ftrace fields tagged "offset"
Some of our tracepoints describe fields as "offset".  That name doesn't
describe any units, which makes the fields not very useful.  Rename the
fields to capture units and ensure the format is hexadecimal.

"fileoff" means file offset, in units of fs blocks
"pos" means file offset, in bytes
"forkoff" means inode fork offset, in bytes

The one remaining "offset" value is for iclogs, since that's the byte
offset of the end of where we've written into the current iclog.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
2021-08-19 10:07:09 -07:00
Darrick J. Wong
97f4f9153d xfs: standardize rmap owner number formatting in ftrace output
Always print rmap owner number in hexadecimal and preceded with the unit
"owner".

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
2021-08-19 10:07:09 -07:00
Darrick J. Wong
f7b08163b7 xfs: standardize AG block number formatting in ftrace output
Always print allocation group block numbers in hexadecimal and preceded
with the unit "agbno".

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
2021-08-19 10:07:09 -07:00
Darrick J. Wong
9febf39dfe xfs: standardize AG number formatting in ftrace output
Always print allocation group numbers in hexadecimal and preceded with
the unit "agno".

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
2021-08-19 10:07:09 -07:00
Darrick J. Wong
af6265a008 xfs: standardize inode number formatting in ftrace output
Always print inode numbers in hexadecimal and preceded with the unit
"ino" or "agino", as apropriate.  Fix one tracepoint that used "ino %u"
for an inode btree block count to reduce confusion.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
2021-08-19 10:07:08 -07:00
Darrick J. Wong
3fd7cb845b xfs: fix incorrect unit conversion in scrub tracepoint
XFS_DADDR_TO_FSB converts a raw disk address (in units of 512b blocks)
to a raw disk address (in units of fs blocks).  Unfortunately, the
xchk_block_error_class tracepoints incorrectly uses this to decode
xfs_daddr_t into segmented AG number and AG block addresses.  Use the
correct translation code.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
2021-08-19 10:07:08 -07:00
Dave Chinner
92219c292a xfs: convert btree cursor inode-private member names
bc_private.b -> bc_ino conversion via script:

$ sed -i 's/bc_private\.b/bc_ino/g' fs/xfs/*[ch] fs/xfs/*/*[ch]

And then revert the change to the bc_ino #define in
fs/xfs/libxfs/xfs_btree.h manually.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
[darrick: tweak the subject line slightly]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
2020-03-13 10:37:14 -07:00
Peter Zijlstra
04ae87a520 ftrace: Rework event_create_dir()
Rework event_create_dir() to use an array of static data instead of
function pointers where possible.

The problem is that it would call the function pointer on module load
before parse_args(), possibly even before jump_labels were initialized.
Luckily the generated functions don't use jump_labels but it still seems
fragile. It also gets in the way of changing when we make the module map
executable.

The generated function are basically calling trace_define_field() with a
bunch of static arguments. So instead of a function, capture these
arguments in a static array, avoiding the function call.

Now there are a number of cases where the fields are dynamic (syscall
arguments, kprobes and uprobes), in which case a static array does not
work, for these we preserve the function call. Luckily all these cases
are not related to modules and so we can retain the function call for
them.

Also fix up all broken tracepoint definitions that now generate a
compile error.

Tested-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20191111132458.342979914@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-27 07:44:25 +01:00
Darrick J. Wong
75efa57d0b xfs: add online scrub for superblock counters
Teach online scrub how to check the filesystem summary counters.  We use
the incore delalloc block counter along with the incore AG headers to
compute expected values for fdblocks, icount, and ifree, and then check
that the percpu counter is within a certain threshold of the expected
value.  This is done to avoid having to freeze or otherwise lock the
filesystem, which means that we're only checking that the counters are
fairly close, not that they're exactly correct.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-04-30 08:19:13 -07:00
Darrick J. Wong
b9454fe056 xfs: clean up the inode cluster checking in the inobt scrub
The code to check inobt records against inode clusters is a mess of
poorly named variables and unnecessary parameters.  Clean the
unnecessary inode number parameters out of _check_cluster_freemask in
favor of computing them inside the function instead of making the caller
do it.  In xchk_iallocbt_check_cluster, rename the variables to make it
more obvious just what chunk_ino and cluster_ino represent.

Add a tracepoint to make it easier to track each inode cluster as we
scrub it.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-02-11 16:06:39 -08:00
Darrick J. Wong
86d163dbfe xfs: stringify scrub types in ftrace output
Use __print_symbolic to print the scrub type in ftrace output.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
2018-12-19 14:02:01 -08:00
Darrick J. Wong
c494213f30 xfs: stringify btree cursor types in ftrace output
Use __print_symbolic to print the btree type in ftrace output.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
2018-12-19 14:02:01 -08:00
Darrick J. Wong
7af8150f99 xfs: fix function pointer type in ftrace format
Use %pS instead of %pF in ftrace strings so that we record the actual
function address instead of the function descriptor.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
2018-12-19 14:02:00 -08:00
Darrick J. Wong
86d969b425 xfs: refactor the xrep_extent_list into xfs_bitmap
As mentioned previously, the xrep_extent_list basically implements a
bitmap with two functions: set and disjoint union.  Rename all these
functions to xfs_bitmap to shorten the name and make it more obvious
what we're doing.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
2018-07-31 13:18:08 -07:00
Darrick J. Wong
1d8a748a8a xfs: shorten struct xfs_scrub_context to struct xfs_scrub
Shorten the name of the online fsck context structure.  Whitespace
damage will be fixed by a subsequent patch.  There are no functional
changes.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
2018-07-23 09:08:00 -07:00
Darrick J. Wong
b5e2196e9c xfs: shorten xfs_repair_ prefix to xrep_
Shorten all the metadata repair xfs_repair_* symbols to xrep_.
Whitespace damage will be fixed by a subsequent patch.  There are no
functional changes.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
2018-07-23 09:08:00 -07:00
Darrick J. Wong
c517b3aa02 xfs: shorten xfs_scrub_ prefix
Shorten all the metadata checking xfs_scrub_ prefixes to xchk_.  After
this, the only xfs_scrub* symbols are the ones that pertain to both
scrub and repair.  Whitespace damage will be fixed in a subsequent
patch.  There are no functional changes.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
2018-07-23 09:08:00 -07:00
Dave Chinner
0b61f8a407 xfs: convert to SPDX license tags
Remove the verbose license text from XFS files and replace them
with SPDX tags. This does not change the license of any of the code,
merely refers to the common, up-to-date license files in LICENSES/

This change was mostly scripted. fs/xfs/Makefile and
fs/xfs/libxfs/xfs_fs.h were modified by hand, the rest were detected
and modified by the following command:

for f in `git grep -l "GNU General" fs/xfs/` ; do
	echo $f
	cat $f | awk -f hdr.awk > $f.new
	mv -f $f.new $f
done

And the hdr.awk script that did the modification (including
detecting the difference between GPL-2.0 and GPL-2.0+ licenses)
is as follows:

$ cat hdr.awk
BEGIN {
	hdr = 1.0
	tag = "GPL-2.0"
	str = ""
}

/^ \* This program is free software/ {
	hdr = 2.0;
	next
}

/any later version./ {
	tag = "GPL-2.0+"
	next
}

/^ \*\// {
	if (hdr > 0.0) {
		print "// SPDX-License-Identifier: " tag
		print str
		print $0
		str=""
		hdr = 0.0
		next
	}
	print $0
	next
}

/^ \* / {
	if (hdr > 1.0)
		next
	if (hdr > 0.0) {
		if (str != "")
			str = str "\n"
		str = str $0
		next
	}
	print $0
	next
}

/^ \*/ {
	if (hdr > 0.0)
		next
	print $0
	next
}

// {
	if (hdr > 0.0) {
		if (str != "")
			str = str "\n"
		str = str $0
		next
	}
	print $0
}

END { }
$

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-06-06 14:17:53 -07:00
Darrick J. Wong
718fa74b15 xfs: create tracepoints for online repair
These tracepoints will be used to debug the online repair routines.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2018-05-15 18:12:50 -07:00
Darrick J. Wong
7e56d9eaea xfs: remove xfs_buf parameter from inode scrub methods
Now that we no longer do raw inode buffer scrubbing, the bp parameter is
no longer used anywhere we're dealing with an inode, so remove it and
all the useless NULL parameters that go with it.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
2018-03-23 18:05:08 -07:00
Darrick J. Wong
67a3f6d014 xfs: make tracepoint inode number format consistent
Fix all the inode number formats to be consistently (0x%llx) in all
trace point definitions.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
2018-01-29 07:27:22 -08:00
Darrick J. Wong
64b12563b2 xfs: set up scrub cross-referencing helpers
Create some helper functions that we'll use later to deal with problems
we might encounter while cross referencing metadata with other metadata.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2018-01-17 21:00:44 -08:00
Darrick J. Wong
aff68a5502 xfs: use %pS printk format for direct instruction addresses
Use the %pS instead of the %pF printk format specifier for printing
symbols from direct addresses. This is needed for the ia64, ppc64 and
parisc64 architectures.

While we're at it, be consistent with the capitalization of the 'S'.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2018-01-12 14:09:08 -08:00
Darrick J. Wong
37f3fa7f16 xfs: scrub btree keys and records
Add to the btree scrubber the ability to check that the keys and
records are in the right order and actually call out to our record
iterator to do actual checking of the records.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2017-10-26 15:38:24 -07:00
Darrick J. Wong
537964bceb xfs: create helpers to scrub a metadata btree
Create helper functions and tracepoints to deal with errors while
scrubbing a metadata btree.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2017-10-26 15:38:24 -07:00
Darrick J. Wong
4700d22980 xfs: create helpers to record and deal with scrub problems
Create helper functions to record crc and corruption problems, and
deal with any other runtime errors that arise.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2017-10-26 15:38:24 -07:00
Darrick J. Wong
a56371865e xfs: dispatch metadata scrub subcommands
Create structures needed to hold scrubbing context and dispatch incoming
commands to the individual scrubbers.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2017-10-26 15:38:23 -07:00
Darrick J. Wong
36fd6e863c xfs: create an ioctl to scrub AG metadata
Create an ioctl that can be used to scrub internal filesystem metadata.
The new ioctl takes the metadata type, an (optional) AG number, an
(optional) inode number and generation, and a flags argument.  This will
be used by the upcoming XFS online scrub tool.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2017-10-26 15:38:23 -07:00