From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Enhance the debug output by reporting at which line in the trace output
we locked a particular buffer.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
tools/xfsbuflock.py | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/tools/xfsbuflock.py b/tools/xfsbuflock.py
index cc15f582..954f0954 100755
--- a/tools/xfsbuflock.py
+++ b/tools/xfsbuflock.py
@@ -85,6 +85,7 @@ class Buffer:
self.locktime = None
self.owner = None
self.waiters = set()
+ self.lockline = 0
def trylock(self, process, time):
if not self.locked:
@@ -92,7 +93,8 @@ class Buffer:
def lockdone(self, process, time):
if self.locked:
- print('Buffer already locked on line %d?!' % nr)
+ print('Buffer 0x%x already locked at line %d? (line %d)' % \
+ (self.bno, self.lockline, nr))
# process.dump()
# self.dump()
# assert False
@@ -101,6 +103,7 @@ class Buffer:
self.locked = True
self.owner = process
self.locktime = time
+ self.lockline = nr
process.locked_bufs.add(self)
process.bufs.add(self)
locked_buffers.add(self)
@@ -118,7 +121,8 @@ class Buffer:
def dump(self):
if self.owner is not None:
- pid = '%s@%f' % (self.owner.pid, self.locktime)
+ pid = '%s@%f (line %d)' % \
+ (self.owner.pid, self.locktime, self.lockline)
else:
pid = ''
print('dev %s bno 0x%x nblks 0x%x lock %d owner %s' % \
--
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