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perf script: Add drop monitor script

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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 <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1309801217-22450-1-git-send-email-nhorman@tuxdriver.com
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Neil Horman 2011-07-04 13:40:17 -04:00 • committed by Arnaldo Carvalho de Melo
parent 98dfd55d80
commit 63e03724b5
3 changed files with 78 additions and 0 deletions
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2
tools/perf/scripts/python/bin/net_dropmonitor-record Executable file
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#!/bin/bash
perf record -e skb:kfree_skb $@

4
tools/perf/scripts/python/bin/net_dropmonitor-report Executable file
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#!/bin/bash
# description: display a table of dropped frames
perf script -s "$PERF_EXEC_PATH"/scripts/python/net_dropmonitor.py $@