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Commit bdea9e34 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

rcutorture: Documentation for rcuperf kernel parameters 



This commit adds documentation for the new rcuperf module's kernel
boot parameters.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent 8704baab

Documentation/kernel-parameters.txt

+32 −0
Original line number Diff line number Diff line
@@ -3284,6 +3284,38 @@ bytes respectively. Such letter suffixes can also be entirely omitted. 
			Lazy RCU callbacks are those which RCU can

			prove do nothing more than free memory.



	rcuperf.gp_exp= [KNL]

			Measure performance of expedited synchronous

			grace-period primitives.



	rcuperf.nreaders= [KNL]

			Set number of RCU readers.  The value -1 selects

			N, where N is the number of CPUs.  A value

			"n" less than -1 selects N-n+1, where N is again

			the number of CPUs.  For example, -2 selects N

			(the number of CPUs), -3 selects N+1, and so on.

			A value of "n" less than or equal to -N selects

			a single reader.



	rcuperf.nwriters= [KNL]

			Set number of RCU writers.  The values operate

			the same as for rcuperf.nreaders.

			N, where N is the number of CPUs



	rcuperf.perf_runnable= [BOOT]

			Start rcuperf running at boot time.



	rcuperf.shutdown= [KNL]

			Shut the system down after performance tests

			complete.  This is useful for hands-off automated

			testing.



	rcuperf.perf_type= [KNL]

			Specify the RCU implementation to test.



	rcuperf.verbose= [KNL]

			Enable additional printk() statements.



	rcutorture.cbflood_inter_holdoff= [KNL]

			Set holdoff time (jiffies) between successive

			callback-flood tests.