kernel.git/include/trace/events/btrfs.h, branch linux-3.13.y

btrfs: Use trace condition for get_extent tracepoint

2013-11-21T01:44:47Z

Doing an if statement to test some condition to know if we should trigger a tracepoint is pointless when tracing is disabled. This just adds overhead and wastes a branch prediction. This is why the TRACE_EVENT_CONDITION() was created. It places the check inside the jump label so that the branch does not happen unless tracing is enabled. That is, instead of doing: if (em) trace_btrfs_get_extent(root, em); Which is basically this: if (em) if (static_key(trace_btrfs_get_extent)) { Using a TRACE_EVENT_CONDITION() we can just do: trace_btrfs_get_extent(root, em); And the condition trace event will do: if (static_key(trace_btrfs_get_extent)) { if (em) { ... The static key is a non conditional jump (or nop) that is faster than having to check if em is NULL or not. Signed-off-by: Steven Rostedt Signed-off-by: Josef Bacik Signed-off-by: Chris Mason

btrfs: add lockdep and tracing annotations for uuid tree

2013-09-21T14:58:56Z

Signed-off-by: David Sterba Signed-off-by: Josef Bacik Signed-off-by: Chris Mason

Btrfs/tracepoint: update delayed ref tracepoints

2013-09-01T11:57:39Z

This shows exactly how btrfs processes the delayed refs onto disks, which is very helpful on understanding delayed ref mechanism and debugging related bugs. Signed-off-by: Liu Bo Signed-off-by: Josef Bacik Signed-off-by: Chris Mason

Btrfs: update new flags for tracepoint

2013-06-14T15:30:00Z

Adding new flags to keep tracepoints consistent with btrfs. Signed-off-by: Liu Bo Signed-off-by: Josef Bacik

Btrfs: parse parent 0 into correct value in tracepoint

2012-12-17T01:46:18Z

Value 0 is not a tree id, so besides an upper limit, a lower limit is necessary as well while parsing root types of tracepoint. Signed-off-by: Liu Bo Signed-off-by: Chris Mason

Btrfs: update delayed ref's tracepoints to show sequence

2012-10-01T19:19:17Z

We've added a new field 'sequence' to delayed ref node, so update related tracepoints. Signed-off-by: Liu Bo

btrfs: return void in functions without error conditions

2012-03-22T00:45:34Z

Signed-off-by: Jeff Mahoney

Btrfs: space leak tracepoints

2012-01-16T20:29:43Z

This in addition to a script in my btrfs-tracing tree will help track down space leaks when we're getting space left over in block groups on umount. Thanks, Signed-off-by: Josef Bacik

Btrfs: add allocator tracepoints

2012-01-16T20:29:42Z

I used these tracepoints when figuring out what the cluster stuff was doing, so add them to mainline in case we need to profile this stuff again. Thanks, Signed-off-by: Josef Bacik

writeback: remove .nonblocking and .encountered_congestion

2011-06-08T00:25:23Z

Remove two unused struct writeback_control fields: .encountered_congestion (completely unused) .nonblocking (never set, checked/showed in XFS,NFS/btrfs) The .for_background check in nfs_write_inode() is also removed btw, as .for_background implies WB_SYNC_NONE. Reviewed-by: Jan Kara Proposed-by: Christoph Hellwig Signed-off-by: Wu Fengguang