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2023-03-12tools: rcu: Add usage function and check for argumentBhaskar Chowdhury1-6/+20
This commit converts extract-stall.sh script's header comment to a usage() function, and adds an argument check. While in the area, make this script be executable. [ paulmck: Strength argument check, remove extraneous comment. ] Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
2021-09-16tools/rcu: Add an extract-stall scriptPaul E. McKenney1-0/+34
This commit adds a script that extracts RCU CPU stall warnings from console output. The user can optionally specify the number of lines preceding the stall to output, and also the number of lines of stall-warning text. Signed-off-by: Paul E. McKenney <paulmck@kernel.org>