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<category name="Ftrace">
<!--
Ftrace counters require Linux 3.10 or later. If you do you see ftrace counters in counter configuration, please check your Linux version.
'counter' attribute must start with ftrace_ and be unique
the regex item in () is the value shown or, if the parentheses are missing, the number of regex matches is counted
'enable' (optional) is the ftrace event to enable associated with the gator event
-->
<!--
<event counter="ftrace_trace_marker_numbers" title="ftrace" name="trace_marker" regex="^tracing_mark_write: ([0-9]+)\s$" class="absolute" description="Numbers written to /sys/kernel/debug/tracing/trace_marker, ex: echo 42 > /sys/kernel/debug/tracing/trace_marker"/>
-->
<!-- ftrace counters -->
<event counter="ftrace_kmem_kmalloc" title="Kmem" name="kmalloc" regex="^kmalloc:.* bytes_alloc=([0-9]+) " enable="kmem/kmalloc" class="incident" description="Number of bytes allocated in the kernel using kmalloc"/>
<event counter="ftrace_ext4_ext4_da_write" title="Ext4" name="ext4_da_write" regex="^ext4_da_write_end:.* len ([0-9]+) " enable="ext4/ext4_da_write_end" class="incident" description="Number of bytes written to an ext4 filesystem"/>
<event counter="ftrace_f2fs_f2fs_write" title="F2FS" name="f2fs_write" regex="^f2fs_write_end:.* len ([0-9]+), " enable="f2fs/f2fs_write_end" class="incident" description="Number of bytes written to an f2fs filesystem"/>
<event counter="ftrace_power_clock_set_rate" title="Power" name="clock_set_rate" regex="^clock_set_rate:.* state=([0-9]+) " enable="power/clock_set_rate" class="absolute" description="Clock rate state"/>
<!-- counting ftrace counters -->
<event counter="ftrace_block_block_rq_complete" title="Block" name="block_rq_complete" regex="^block_rq_complete: " enable="block/block_rq_complete" class="delta" description="Number of block IO operations completed by device driver"/>
<event counter="ftrace_block_block_rq_issue" title="Block" name="block_rq_issue" regex="^block_rq_issue: " enable="block/block_rq_issue" class="delta" description="Number of block IO operations issued to device driver"/>
<event counter="ftrace_power_cpu_idle" title="Power" name="cpu_idle" regex="^cpu_idle: " enable="power/cpu_idle" class="delta" description="Number of times cpu_idle is entered or exited"/>
</category>
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