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Date: Tue, 21 Jul 2009 12:20:17 -0400
From: Jason Baron <jbaron@...hat.com>
To: mingo@...e.hu
Cc: linux-kernel@...r.kernel.org, paulus@...ba.org,
a.p.zijlstra@...llo.nl, rostedt@...dmis.org, fweisbec@...il.com
Subject: [PATCH 0/2] perf_counter: add tracepoint support
hi,
The following two patches build on Peter's initial tracepoint perf counter work.
The first patch, adds 'perf list' and 'perf stat' support to the perf tool. Thus,
we can specify tracepoint events as: '-e subsystem:event_name'. The second patch
looks for the debugfs filesystem in /proc/mounts, but also allows the user to
specify '--debugfs-dir=blah' or set the environment variable: 'PERF_DIR_DEBUGFS'
Below, I show the output of 'perf list', and 'perf stat' for a tbench run.
thanks,
-Jason
#perf list
List of pre-defined events (to be used in -e):
cpu-cycles OR cycles [Hardware event]
instructions [Hardware event]
cache-references [Hardware event]
cache-misses [Hardware event]
branch-instructions OR branches [Hardware event]
branch-misses [Hardware event]
bus-cycles [Hardware event]
cpu-clock [Software event]
task-clock [Software event]
page-faults OR faults [Software event]
minor-faults [Software event]
major-faults [Software event]
context-switches OR cs [Software event]
cpu-migrations OR migrations [Software event]
L1-dcache-loads [Hardware cache event]
L1-dcache-load-misses [Hardware cache event]
L1-dcache-stores [Hardware cache event]
L1-dcache-store-misses [Hardware cache event]
L1-dcache-prefetches [Hardware cache event]
L1-dcache-prefetch-misses [Hardware cache event]
L1-icache-loads [Hardware cache event]
L1-icache-load-misses [Hardware cache event]
L1-icache-prefetches [Hardware cache event]
L1-icache-prefetch-misses [Hardware cache event]
LLC-loads [Hardware cache event]
LLC-load-misses [Hardware cache event]
LLC-stores [Hardware cache event]
LLC-store-misses [Hardware cache event]
LLC-prefetches [Hardware cache event]
LLC-prefetch-misses [Hardware cache event]
dTLB-loads [Hardware cache event]
dTLB-load-misses [Hardware cache event]
dTLB-stores [Hardware cache event]
dTLB-store-misses [Hardware cache event]
dTLB-prefetches [Hardware cache event]
dTLB-prefetch-misses [Hardware cache event]
iTLB-loads [Hardware cache event]
iTLB-load-misses [Hardware cache event]
branch-loads [Hardware cache event]
branch-load-misses [Hardware cache event]
rNNN [raw hardware event descriptor]
skb:kfree_skb [Tracepoint event]
block:block_rq_abort [Tracepoint event]
block:block_rq_insert [Tracepoint event]
block:block_rq_issue [Tracepoint event]
block:block_rq_requeue [Tracepoint event]
block:block_rq_complete [Tracepoint event]
block:block_bio_bounce [Tracepoint event]
block:block_bio_complete [Tracepoint event]
block:block_bio_backmerge [Tracepoint event]
block:block_bio_frontmerge [Tracepoint event]
block:block_bio_queue [Tracepoint event]
block:block_getrq [Tracepoint event]
block:block_sleeprq [Tracepoint event]
block:block_plug [Tracepoint event]
block:block_unplug_timer [Tracepoint event]
block:block_unplug_io [Tracepoint event]
block:block_split [Tracepoint event]
block:block_remap [Tracepoint event]
kmem:kmalloc [Tracepoint event]
kmem:kmem_cache_alloc [Tracepoint event]
kmem:kmalloc_node [Tracepoint event]
kmem:kmem_cache_alloc_node [Tracepoint event]
kmem:kfree [Tracepoint event]
kmem:kmem_cache_free [Tracepoint event]
ftrace:kmem_free [Tracepoint event]
ftrace:kmem_alloc [Tracepoint event]
ftrace:power [Tracepoint event]
ftrace:hw_branch [Tracepoint event]
ftrace:branch [Tracepoint event]
ftrace:print [Tracepoint event]
ftrace:bprint [Tracepoint event]
ftrace:user_stack [Tracepoint event]
ftrace:kernel_stack [Tracepoint event]
ftrace:special [Tracepoint event]
ftrace:context_switch [Tracepoint event]
ftrace:wakeup [Tracepoint event]
ftrace:funcgraph_exit [Tracepoint event]
ftrace:funcgraph_entry [Tracepoint event]
ftrace:function [Tracepoint event]
workqueue:workqueue_insertion [Tracepoint event]
workqueue:workqueue_execution [Tracepoint event]
workqueue:workqueue_creation [Tracepoint event]
workqueue:workqueue_destruction [Tracepoint event]
irq:irq_handler_entry [Tracepoint event]
irq:irq_handler_exit [Tracepoint event]
irq:softirq_entry [Tracepoint event]
irq:softirq_exit [Tracepoint event]
sched:sched_kthread_stop [Tracepoint event]
sched:sched_kthread_stop_ret [Tracepoint event]
sched:sched_wait_task [Tracepoint event]
sched:sched_wakeup [Tracepoint event]
sched:sched_wakeup_new [Tracepoint event]
sched:sched_switch [Tracepoint event]
sched:sched_migrate_task [Tracepoint event]
sched:sched_process_free [Tracepoint event]
sched:sched_process_exit [Tracepoint event]
sched:sched_process_wait [Tracepoint event]
sched:sched_process_fork [Tracepoint event]
sched:sched_signal_send [Tracepoint event]
# perf stat -a -e sched:sched_switch -e sched:sched_wakeup -e irq:irq_handler_entry
tbench 4
Performance counter stats for 'tbench 4':
194658693 sched:sched_switch
97479295 sched:sched_wakeup
9122 irq:irq_handler_entry
720.171439729 seconds time elapsed
-add support for tracepoints to the perf tool
-add detection for debugfs mount directory
tools/perf/perf.c | 58 +++++++++++++-
tools/perf/util/cache.h | 1 +
tools/perf/util/parse-events.c | 176 +++++++++++++++++++++++++++++++++++++++-
tools/perf/util/parse-events.h | 3 +
tools/perf/util/string.h | 3 +
tools/perf/util/util.h | 2 +
6 files changed, 241 insertions(+), 2 deletions(-)
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