CHECK: extern prototypes should be avoided in .h files
#59: FILE: include/linux/sched/isolation.h:43:
+extern int housekeeping_update(struct cpumask *isol_mask);

WARNING: line length of 88 exceeds 80 columns
#105: FILE: kernel/sched/isolation.c:43:
+		/* CPU hotplug write locked, so cpuset partition can't be overwritten */

WARNING: line length of 83 exceeds 80 columns
#106: FILE: kernel/sched/isolation.c:44:
+		if (IS_ENABLED(CONFIG_HOTPLUG_CPU) && lockdep_is_cpus_write_held())

WARNING: line length of 81 exceeds 80 columns
#119: FILE: kernel/sched/isolation.c:57:
+static inline struct cpumask *housekeeping_cpumask_dereference(enum hk_type type)

WARNING: line length of 84 exceeds 80 columns
#163: FILE: kernel/sched/isolation.c:128:
+	cpumask_andnot(trial, housekeeping_cpumask(HK_TYPE_DOMAIN_BOOT), isol_mask);

WARNING: line length of 84 exceeds 80 columns
#175: FILE: kernel/sched/isolation.c:140:
+		WRITE_ONCE(housekeeping.flags, housekeeping.flags | HK_FLAG_DOMAIN);

total: 0 errors, 5 warnings, 1 checks, 138 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit dab62c14da9e ("cpuset: Update HK_TYPE_DOMAIN cpumask from cpuset") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 5 warnings, 1 checks, 138 lines checked