Commit Graph
6 Commits
Author SHA1 Message Date
Ben Hutchings 6b75c7357c perf: net_dropmonitor: Remove progress indicator
We can read /proc/kallsyms in a fraction of a second, so why waste
a further fraction of a second showing progress?

Signed-off-by: Ben Hutchings <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
2013-05-22 15:10:11 -07:00
Ben Hutchings 0ce58bae85 perf: net_dropmonitor: Use bisection in symbol lookup
Signed-off-by: Ben Hutchings <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
2013-05-22 15:10:10 -07:00
Ben Hutchings 326017c757 perf: net_dropmonitor: Do not assume ordering of dictionaries
The sort order of dictionaries in Python is undocumented.  Use
tuples instead, which are documented to be lexically ordered.

Signed-off-by: Ben Hutchings <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
2013-05-22 15:10:10 -07:00
Ben Hutchings 5a1e99dd20 perf: net_dropmonitor: Fix symbol-relative addresses
The comparison between traced and symbol addresses is backwards: if
the traced address doesn't exactly match a symbol (which we don't
expect it to), we'll show the next symbol and the offset to it,
whereas we should show the previous symbol and the offset from it.

Cc: [email protected]
Signed-off-by: Ben Hutchings <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
2013-05-22 15:10:10 -07:00
Ben Hutchings 140c3c6a2b perf: net_dropmonitor: Fix trace parameter order
This works much better if we don't treat protocol numbers as addresses.

Cc: [email protected]
Signed-off-by: Ben Hutchings <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
2013-05-22 15:10:10 -07:00
Neil Horman 63e03724b5 perf script: Add drop monitor script
A while back I created the dropmonitor protocol, which allowed users to get
reports of dropped frames communicated to them via a netlink socket.

While useful, several people have now asked that I integrate the ability
to do drop monitoring with perf, so they don't have to run additional
tools.

This patch adds a drop monitor script to the perf suite, and provides
the same output that the netlink socket does.

Cc: Ingo Molnar <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Neil Horman <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2011-09-29 16:41:37 -03:00