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perf: Remove leftover useless options to record trace events from scripts
-f, -c 1, -R are now useless for trace events recording, moreover -M is useless and event hurts. Remove them from the documentation examples and from record scripts. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Tom Zanussi <tzanussi@gmail.com>
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@ -49,12 +49,10 @@ available as calls back into the perf executable (see below).
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As an example, the following perf record command can be used to record
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all sched_wakeup events in the system:
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# perf record -c 1 -f -a -M -R -e sched:sched_wakeup
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# perf record -a -e sched:sched_wakeup
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Traces meant to be processed using a script should be recorded with
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the above options: -c 1 says to sample every event, -a to enable
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system-wide collection, -M to multiplex the output, and -R to collect
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raw samples.
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the above option: -a to enable system-wide collection.
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The format file for the sched_wakep event defines the following fields
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(see /sys/kernel/debug/tracing/events/sched/sched_wakeup/format):
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@ -93,7 +93,7 @@ don't care how it exited, so we'll use 'perf record' to record only
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the sys_enter events:
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----
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# perf record -c 1 -f -a -M -R -e raw_syscalls:sys_enter
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# perf record -a -e raw_syscalls:sys_enter
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^C[ perf record: Woken up 1 times to write data ]
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[ perf record: Captured and wrote 56.545 MB perf.data (~2470503 samples) ]
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@ -359,7 +359,7 @@ your script:
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# cat kernel-source/tools/perf/scripts/python/bin/syscall-counts-record
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#!/bin/bash
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perf record -c 1 -f -a -M -R -e raw_syscalls:sys_enter
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perf record -a -e raw_syscalls:sys_enter
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----
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The 'report' script is also a shell script with the same base name as
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@ -449,12 +449,10 @@ available as calls back into the perf executable (see below).
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As an example, the following perf record command can be used to record
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all sched_wakeup events in the system:
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# perf record -c 1 -f -a -M -R -e sched:sched_wakeup
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# perf record -a -e sched:sched_wakeup
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Traces meant to be processed using a script should be recorded with
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the above options: -c 1 says to sample every event, -a to enable
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system-wide collection, -M to multiplex the output, and -R to collect
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raw samples.
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the above option: -a to enable system-wide collection.
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The format file for the sched_wakep event defines the following fields
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(see /sys/kernel/debug/tracing/events/sched/sched_wakeup/format):
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@ -1,2 +1,2 @@
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#!/bin/bash
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perf record -c 1 -f -a -M -R -e kmem:kmalloc -e irq:softirq_entry -e kmem:kfree
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perf record -a -e kmem:kmalloc -e irq:softirq_entry -e kmem:kfree
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@ -1,2 +1,2 @@
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#!/bin/bash
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perf record -c 1 -f -a -M -R -e raw_syscalls:sys_exit $@
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perf record -a -e raw_syscalls:sys_exit $@
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@ -1,3 +1,3 @@
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#!/bin/bash
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perf record -c 1 -f -a -M -R -e syscalls:sys_enter_read -e syscalls:sys_enter_write $@
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perf record -a -e syscalls:sys_enter_read -e syscalls:sys_enter_write $@
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@ -1,2 +1,2 @@
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#!/bin/bash
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perf record -c 1 -f -a -M -R -e syscalls:sys_enter_read -e syscalls:sys_exit_read -e syscalls:sys_enter_write -e syscalls:sys_exit_write $@
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perf record -a -e syscalls:sys_enter_read -e syscalls:sys_exit_read -e syscalls:sys_enter_write -e syscalls:sys_exit_write $@
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@ -1,2 +1,2 @@
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#!/bin/bash
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perf record -c 1 -f -a -M -R -e syscalls:sys_enter_read -e syscalls:sys_exit_read -e syscalls:sys_enter_write -e syscalls:sys_exit_write $@
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perf record -a -e syscalls:sys_enter_read -e syscalls:sys_exit_read -e syscalls:sys_enter_write -e syscalls:sys_exit_write $@
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@ -1,5 +1,5 @@
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#!/bin/bash
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perf record -c 1 -f -a -M -R -e sched:sched_switch -e sched:sched_wakeup $@
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perf record -a -e sched:sched_switch -e sched:sched_wakeup $@
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@ -1,2 +1,2 @@
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#!/bin/bash
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perf record -c 1 -f -a -M -R -e workqueue:workqueue_creation -e workqueue:workqueue_destruction -e workqueue:workqueue_execution -e workqueue:workqueue_insertion $@
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perf record -a -e workqueue:workqueue_creation -e workqueue:workqueue_destruction -e workqueue:workqueue_execution -e workqueue:workqueue_insertion $@
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@ -1,2 +1,2 @@
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#!/bin/bash
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perf record -c 1 -f -a -M -R -e raw_syscalls:sys_exit $@
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perf record -a -e raw_syscalls:sys_exit $@
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@ -1,2 +1,2 @@
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#!/bin/bash
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perf record -c 1 -f -a -M -R -e raw_syscalls:sys_enter $@
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perf record -a -e raw_syscalls:sys_enter $@
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@ -1,2 +1,2 @@
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#!/bin/bash
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perf record -c 1 -f -a -M -R -e raw_syscalls:sys_enter $@
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perf record -a -e raw_syscalls:sys_enter $@
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@ -1,2 +1,2 @@
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#!/bin/bash
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perf record -c 1 -f -a -M -R -e raw_syscalls:sys_enter $@
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perf record -a -e raw_syscalls:sys_enter $@
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