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| author | Ingo Molnar <mingo@kernel.org> | 2023-01-18 12:14:01 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-01-18 12:16:47 +0100 |
| commit | 188a569658584e93930ab60334c5a1079c0330d8 (patch) | |
| tree | 6ce09e489b47df3172ee819c9b80bc11feefc34d /lib | |
| parent | blk-mq: Build default queue map via group_cpus_evenly() (diff) | |
| download | linux-188a569658584e93930ab60334c5a1079c0330d8.tar.xz linux-188a569658584e93930ab60334c5a1079c0330d8.zip | |
genirq/affinity: Only build SMP-only helper functions on SMP kernels
allnoconfig grew these new build warnings in lib/group_cpus.c:
lib/group_cpus.c:247:12: warning: ‘__group_cpus_evenly’ defined but not used [-Wunused-function]
lib/group_cpus.c:75:13: warning: ‘build_node_to_cpumask’ defined but not used [-Wunused-function]
lib/group_cpus.c:66:13: warning: ‘free_node_to_cpumask’ defined but not used [-Wunused-function]
lib/group_cpus.c:43:23: warning: ‘alloc_node_to_cpumask’ defined but not used [-Wunused-function]
Widen the #ifdef CONFIG_SMP block to not expose unused helpers on
non-SMP builds.
Also annotate the preprocessor branches for better readability.
Fixes: f7b3ea8cf72f ("genirq/affinity: Move group_cpus_evenly() into lib/")
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20221227022905.352674-6-ming.lei@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/group_cpus.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/group_cpus.c b/lib/group_cpus.c index 99f08c6cb9d9..9c837a35fef7 100644 --- a/lib/group_cpus.c +++ b/lib/group_cpus.c @@ -9,6 +9,8 @@ #include <linux/sort.h> #include <linux/group_cpus.h> +#ifdef CONFIG_SMP + static void grp_spread_init_one(struct cpumask *irqmsk, struct cpumask *nmsk, unsigned int cpus_per_grp) { @@ -327,7 +329,6 @@ static int __group_cpus_evenly(unsigned int startgrp, unsigned int numgrps, return done; } -#ifdef CONFIG_SMP /** * group_cpus_evenly - Group all CPUs evenly per NUMA/CPU locality * @numgrps: number of groups @@ -412,7 +413,7 @@ struct cpumask *group_cpus_evenly(unsigned int numgrps) } return masks; } -#else +#else /* CONFIG_SMP */ struct cpumask *group_cpus_evenly(unsigned int numgrps) { struct cpumask *masks = kcalloc(numgrps, sizeof(*masks), GFP_KERNEL); @@ -424,4 +425,4 @@ struct cpumask *group_cpus_evenly(unsigned int numgrps) cpumask_copy(&masks[0], cpu_possible_mask); return masks; } -#endif +#endif /* CONFIG_SMP */ |