add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/perf/Documentation/perf-bench.txt
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@@ -49,6 +49,9 @@
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 'sched'::
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 	Scheduler and IPC mechanisms.
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+'syscall'::
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+	System call performance (throughput).
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+
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 'mem'::
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 	Memory access performance.
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@@ -57,6 +60,12 @@
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 'futex'::
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 	Futex stressing benchmarks.
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+'epoll'::
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+	Eventpoll (epoll) stressing benchmarks.
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+'internals'::
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+	Benchmark internal perf functionality.
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 'all'::
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 	All benchmark subsystems.
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                 59004 ops/sec
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 ---------------------
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+SUITES FOR 'syscall'
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+~~~~~~~~~~~~~~~~~~
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+*basic*::
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+Suite for evaluating performance of core system call throughput (both usecs/op and ops/sec metrics).
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+This uses a single thread simply doing getppid(2), which is a simple syscall where the result is not
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+cached by glibc.
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+
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 SUITES FOR 'mem'
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 ~~~~~~~~~~~~~~~~
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 *memcpy*::
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 *lock-pi*::
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 Suite for evaluating futex lock_pi calls.
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+SUITES FOR 'epoll'
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+~~~~~~~~~~~~~~~~~~
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+*wait*::
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+Suite for evaluating concurrent epoll_wait calls.
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+*ctl*::
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+Suite for evaluating multiple epoll_ctl calls.
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+SUITES FOR 'internals'
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+~~~~~~~~~~~~~~~~~~~~~~
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+*synthesize*::
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+Suite for evaluating perf's event synthesis performance.
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 SEE ALSO
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