From: Yury Norov Date: Wed, 21 Apr 2021 03:13:26 +0000 (-0700) Subject: rcu/tree_plugin: Don't handle the case of 'all' CPU range X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a6814a79f2ca09a5e15e69324213dad29a5844ad;p=linux.git rcu/tree_plugin: Don't handle the case of 'all' CPU range The 'all' semantics is now supported by the bitmap_parselist() so we can drop supporting it as a special case in RCU code. Since 'all' is properly supported in core bitmap code, also drop legacy comment in RCU for it. This patch does not make any functional changes for existing users. Reviewed-by: Andy Shevchenko Signed-off-by: Yury Norov Signed-off-by: Paul E. McKenney --- diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index ad0156b869371..3f7a345b3814f 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1535,13 +1535,10 @@ static void rcu_cleanup_after_idle(void) static int __init rcu_nocb_setup(char *str) { alloc_bootmem_cpumask_var(&rcu_nocb_mask); - if (!strcasecmp(str, "all")) /* legacy: use "0-N" instead */ + if (cpulist_parse(str, rcu_nocb_mask)) { + pr_warn("rcu_nocbs= bad CPU range, all CPUs set\n"); cpumask_setall(rcu_nocb_mask); - else - if (cpulist_parse(str, rcu_nocb_mask)) { - pr_warn("rcu_nocbs= bad CPU range, all CPUs set\n"); - cpumask_setall(rcu_nocb_mask); - } + } return 1; } __setup("rcu_nocbs=", rcu_nocb_setup);