diff options
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 4 | ||||
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 6 |
2 files changed, 3 insertions, 7 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 04545725f187..83e2ef192de9 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -4068,9 +4068,7 @@ see CONFIG_RAS_CEC help text. rcu_nocbs= [KNL] - The argument is a cpu list, as described above, - except that the string "all" can be used to - specify every CPU on the system. + The argument is a cpu list, as described above. In kernels built with CONFIG_RCU_NOCB_CPU=y, set the specified list of CPUs to be no-callback CPUs. diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 2d603771c7dc..0b955627d609 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1464,14 +1464,12 @@ static void rcu_cleanup_after_idle(void) /* * Parse the boot-time rcu_nocb_mask CPU list from the kernel parameters. - * The string after the "rcu_nocbs=" is either "all" for all CPUs, or a - * comma-separated list of CPUs and/or CPU ranges. If an invalid list is - * given, a warning is emitted and all CPUs are offloaded. + * If the list is invalid, a warning is emitted and all CPUs are offloaded. */ static int __init rcu_nocb_setup(char *str) { alloc_bootmem_cpumask_var(&rcu_nocb_mask); - if (!strcasecmp(str, "all")) + if (!strcasecmp(str, "all")) /* legacy: use "0-N" instead */ cpumask_setall(rcu_nocb_mask); else if (cpulist_parse(str, rcu_nocb_mask)) { |