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1 # SPDX-License-Identifier: GPL-2.0-only
3 # RCU-related debugging configuration options
19 	  false-positive splats, we keep it default disabled but once all
34 	  tests on the RCU infrastructure.  The kernel module may be built
37 	  Say Y here if you want RCU performance tests to be built into
50 	  on the RCU infrastructure.  The kernel module may be built
53 	  Say Y here if you want RCU torture tests to be built into
59 	tristate "Scalability tests for read-side synchronization (RCU and others)"
66 	  useful comparing RCU with various read-side synchronization mechanisms.
67 	  The kernel module may be built after the fact on the running kernel to be
70 	  Say Y here if you want these performance tests built into the kernel.
75 	int "RCU CPU stall timeout in seconds"
86 	int "Expedited RCU CPU stall timeout in milliseconds"
104 	  This option enables additional tracepoints for ftrace-style
114 	  This option provides consistency checks in RCU's handling of
115 	  NO_HZ.  These checks have proven quite helpful in detecting
116 	  bugs in arch-specific NO_HZ code.
129 	  scalability, destroys real-time response, degrades battery
131 	  machines, as in systems with more than about 10 or 20 CPUs.
132 	  But in conjunction with tools like KASAN, it can be helpful
134 	  too-short RCU read-side critical sections.