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authorPaul E. McKenney <paulmck@kernel.org>2021-04-22 21:55:43 +0300
committerPaul E. McKenney <paulmck@kernel.org>2021-05-11 01:39:19 +0300
commite5bd61e82b7a60c92bc09a618a0d8a612689037b (patch)
tree2b7d401482dedb984c3d1b46e3edbdeeff8686f8 /tools/testing/selftests/rcutorture
parent58d0db869d7ab8ca97b521f167022caa2c42cbe7 (diff)
downloadlinux-e5bd61e82b7a60c92bc09a618a0d8a612689037b.tar.xz
tools/rcu: Add drgn script to dump number of RCU callbacks
This commit adds an rcu-cbs.py drgn script that computes the number of RCU callbacks waiting to be invoked. This information can be helpful when managing systems that are short of memory and that have software components that make heavy use of RCU, for example, by opening and closing files in tight loops. (But please note that there are almost always better ways to get your job done than by opening and closing files in tight loops.) Reported-by: Richard Weinberger <richard@nod.at> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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