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Linux www 6.11.0-29-generic #29-Ubuntu SMP PREEMPT_DYNAMIC Fri Jun 13 20:29:41 UTC 2025 x86_64
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lib
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6.11.0-29-generic
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rcu
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View File Name :
rcu-updaters.sh
#!/bin/sh # SPDX-License-Identifier: GPL-2.0+ # # Run bpftrace to obtain a histogram of the types of primitives used to # initiate RCU grace periods. The count associated with rcu_gp_init() # is the number of normal (non-expedited) grace periods. # # Usage: rcu-updaters.sh [ duration-in-seconds ] # # Note that not all kernel builds have all of these functions. In those # that do not, this script will issue a diagnostic for each that is not # found, but continue normally for the rest of the functions. duration=${1} if test -n "${duration}" then exitclause='interval:s:'"${duration}"' { exit(); }' else echo 'Hit control-C to end sample and print results.' fi bpftrace -e 'kprobe:kvfree_call_rcu, kprobe:call_rcu, kprobe:call_rcu_tasks, kprobe:call_rcu_tasks_rude, kprobe:call_rcu_tasks_trace, kprobe:call_srcu, kprobe:rcu_barrier, kprobe:rcu_barrier_tasks, kprobe:rcu_barrier_tasks_rude, kprobe:rcu_barrier_tasks_trace, kprobe:srcu_barrier, kprobe:synchronize_rcu, kprobe:synchronize_rcu_expedited, kprobe:synchronize_rcu_tasks, kprobe:synchronize_rcu_tasks_rude, kprobe:synchronize_rcu_tasks_trace, kprobe:synchronize_srcu, kprobe:synchronize_srcu_expedited, kprobe:get_state_synchronize_rcu, kprobe:get_state_synchronize_rcu_full, kprobe:start_poll_synchronize_rcu, kprobe:start_poll_synchronize_rcu_expedited, kprobe:start_poll_synchronize_rcu_full, kprobe:start_poll_synchronize_rcu_expedited_full, kprobe:poll_state_synchronize_rcu, kprobe:poll_state_synchronize_rcu_full, kprobe:cond_synchronize_rcu, kprobe:cond_synchronize_rcu_full, kprobe:start_poll_synchronize_srcu, kprobe:poll_state_synchronize_srcu, kprobe:rcu_gp_init { @counts[func] = count(); } '"${exitclause}"