Use the new pseudo keyword "fallthrough;" and not the various /* fallthrough */ style comments.
Signed-off-by: Joe Perches <j...@perches.com> --- This is a single patch for the kernel/ source tree, which would otherwise be sent through as separate patches to 19 maintainer sections. compilation tested only. Done by the script in this email: https://lore.kernel.org/lkml/9fe980f7e28242c2835ffae34914c5f68e8268a7.ca...@perches.com/ kernel/auditfilter.c | 2 +- kernel/bpf/cgroup.c | 4 ++-- kernel/bpf/verifier.c | 4 ++-- kernel/capability.c | 2 +- kernel/compat.c | 6 +++--- kernel/debug/gdbstub.c | 6 +++--- kernel/debug/kdb/kdb_keyboard.c | 4 ++-- kernel/debug/kdb/kdb_support.c | 6 +++--- kernel/events/core.c | 3 +-- kernel/futex.c | 4 ++-- kernel/gcov/gcc_3_4.c | 6 +++--- kernel/irq/handle.c | 3 +-- kernel/irq/manage.c | 5 ++--- kernel/kallsyms.c | 4 ++-- kernel/pid.c | 2 +- kernel/power/hibernate.c | 2 +- kernel/power/qos.c | 4 ++-- kernel/printk/printk.c | 2 +- kernel/sched/core.c | 2 +- kernel/sched/topology.c | 6 +++--- kernel/signal.c | 2 +- kernel/sys.c | 3 +-- kernel/time/hrtimer.c | 2 +- kernel/time/posix-timers.c | 4 ++-- kernel/time/tick-broadcast.c | 2 +- kernel/time/timer.c | 2 +- kernel/trace/blktrace.c | 2 +- kernel/trace/trace_events_filter.c | 4 ++-- 28 files changed, 47 insertions(+), 51 deletions(-) diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c index b0126e9c0743..471cd680479d 100644 --- a/kernel/auditfilter.c +++ b/kernel/auditfilter.c @@ -674,7 +674,7 @@ static struct audit_rule_data *audit_krule_to_data(struct audit_krule *krule) data->values[i] = AUDIT_UID_UNSET; break; } - /* fall through - if set */ + fallthrough; /* if set */ default: data->values[i] = f->val; } diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c index ddd8addcdb5c..955631f1b77d 100644 --- a/kernel/bpf/cgroup.c +++ b/kernel/bpf/cgroup.c @@ -797,7 +797,7 @@ cgroup_base_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) case BPF_FUNC_trace_printk: if (capable(CAP_SYS_ADMIN)) return bpf_get_trace_printk_proto(); - /* fall through */ + fallthrough; default: return NULL; } @@ -1439,7 +1439,7 @@ static bool cg_sockopt_is_valid_access(int off, int size, return prog->expected_attach_type == BPF_CGROUP_GETSOCKOPT; case offsetof(struct bpf_sockopt, optname): - /* fallthrough */ + fallthrough; case offsetof(struct bpf_sockopt, level): if (size != size_default) return false; diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index ffc3e53f5300..d2b6fd8545e2 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -2249,7 +2249,7 @@ static bool may_access_direct_pkt_data(struct bpf_verifier_env *env, case BPF_PROG_TYPE_CGROUP_SKB: if (t == BPF_WRITE) return false; - /* fallthrough */ + fallthrough; /* Program types with direct read + write access go here! */ case BPF_PROG_TYPE_SCHED_CLS: @@ -4381,7 +4381,7 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env, off_reg == dst_reg ? dst : src); return -EACCES; } - /* fall-through */ + fallthrough; default: break; } diff --git a/kernel/capability.c b/kernel/capability.c index 1444f3954d75..7c59b096c98a 100644 --- a/kernel/capability.c +++ b/kernel/capability.c @@ -93,7 +93,7 @@ static int cap_validate_magic(cap_user_header_t header, unsigned *tocopy) break; case _LINUX_CAPABILITY_VERSION_2: warn_deprecated_v2(); - /* fall through - v3 is otherwise equivalent to v2. */ + fallthrough; /* v3 is otherwise equivalent to v2 */ case _LINUX_CAPABILITY_VERSION_3: *tocopy = _LINUX_CAPABILITY_U32S_3; break; diff --git a/kernel/compat.c b/kernel/compat.c index a2bc1d6ceb57..d9c61f4317be 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -343,11 +343,11 @@ get_compat_sigset(sigset_t *set, const compat_sigset_t __user *compat) return -EFAULT; switch (_NSIG_WORDS) { case 4: set->sig[3] = v.sig[6] | (((long)v.sig[7]) << 32 ); - /* fall through */ + fallthrough; case 3: set->sig[2] = v.sig[4] | (((long)v.sig[5]) << 32 ); - /* fall through */ + fallthrough; case 2: set->sig[1] = v.sig[2] | (((long)v.sig[3]) << 32 ); - /* fall through */ + fallthrough; case 1: set->sig[0] = v.sig[0] | (((long)v.sig[1]) << 32 ); } #else diff --git a/kernel/debug/gdbstub.c b/kernel/debug/gdbstub.c index 4b280fc7dd67..b9d8b7248964 100644 --- a/kernel/debug/gdbstub.c +++ b/kernel/debug/gdbstub.c @@ -1033,14 +1033,14 @@ int gdb_serial_stub(struct kgdb_state *ks) return DBG_PASS_EVENT; } #endif - /* Fall through */ + fallthrough; case 'C': /* Exception passing */ tmp = gdb_cmd_exception_pass(ks); if (tmp > 0) goto default_handle; if (tmp == 0) break; - /* Fall through - on tmp < 0 */ + fallthrough; /* on tmp < 0 */ case 'c': /* Continue packet */ case 's': /* Single step packet */ if (kgdb_contthread && kgdb_contthread != current) { @@ -1049,7 +1049,7 @@ int gdb_serial_stub(struct kgdb_state *ks) break; } dbg_activate_sw_breakpoints(); - /* Fall through - to default processing */ + fallthrough; /* to default processing */ default: default_handle: error = kgdb_arch_handle_exception(ks->ex_vector, diff --git a/kernel/debug/kdb/kdb_keyboard.c b/kernel/debug/kdb/kdb_keyboard.c index 750497b0003a..f877a0a0d7cf 100644 --- a/kernel/debug/kdb/kdb_keyboard.c +++ b/kernel/debug/kdb/kdb_keyboard.c @@ -173,11 +173,11 @@ int kdb_get_kbd_char(void) case KT_LATIN: if (isprint(keychar)) break; /* printable characters */ - /* fall through */ + fallthrough; case KT_SPEC: if (keychar == K_ENTER) break; - /* fall through */ + fallthrough; default: return -1; /* ignore unprintables */ } diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c index b8e6306e7e13..d636506f695a 100644 --- a/kernel/debug/kdb/kdb_support.c +++ b/kernel/debug/kdb/kdb_support.c @@ -432,7 +432,7 @@ int kdb_getphysword(unsigned long *word, unsigned long addr, size_t size) *word = w8; break; } - /* fall through */ + fallthrough; default: diag = KDB_BADWIDTH; kdb_printf("kdb_getphysword: bad width %ld\n", (long) size); @@ -481,7 +481,7 @@ int kdb_getword(unsigned long *word, unsigned long addr, size_t size) *word = w8; break; } - /* fall through */ + fallthrough; default: diag = KDB_BADWIDTH; kdb_printf("kdb_getword: bad width %ld\n", (long) size); @@ -525,7 +525,7 @@ int kdb_putword(unsigned long addr, unsigned long word, size_t size) diag = kdb_putarea(addr, w8); break; } - /* fall through */ + fallthrough; default: diag = KDB_BADWIDTH; kdb_printf("kdb_putword: bad width %ld\n", (long) size); diff --git a/kernel/events/core.c b/kernel/events/core.c index 9ec0b0bfddbd..04e75b1144c5 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -9361,8 +9361,7 @@ perf_event_parse_addr_filter(struct perf_event *event, char *fstr, case IF_SRC_KERNELADDR: case IF_SRC_KERNEL: kernel = 1; - /* fall through */ - + fallthrough; case IF_SRC_FILEADDR: case IF_SRC_FILE: if (state != IF_STATE_SOURCE) diff --git a/kernel/futex.c b/kernel/futex.c index bd18f60e4c6c..ab12b6229d2d 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -3639,12 +3639,12 @@ long do_futex(u32 __user *uaddr, int op, u32 val, ktime_t *timeout, switch (cmd) { case FUTEX_WAIT: val3 = FUTEX_BITSET_MATCH_ANY; - /* fall through */ + fallthrough; case FUTEX_WAIT_BITSET: return futex_wait(uaddr, flags, val, timeout, val3); case FUTEX_WAKE: val3 = FUTEX_BITSET_MATCH_ANY; - /* fall through */ + fallthrough; case FUTEX_WAKE_BITSET: return futex_wake(uaddr, flags, val, val3); case FUTEX_REQUEUE: diff --git a/kernel/gcov/gcc_3_4.c b/kernel/gcov/gcc_3_4.c index 801ee4b0b969..32fc3278166f 100644 --- a/kernel/gcov/gcc_3_4.c +++ b/kernel/gcov/gcc_3_4.c @@ -455,7 +455,7 @@ int gcov_iter_next(struct gcov_iterator *iter) case RECORD_COUNT: /* Advance to next count */ iter->count++; - /* fall through */ + fallthrough; case RECORD_COUNT_LEN: if (iter->count < get_func(iter)->n_ctrs[iter->type]) { iter->record = 9; @@ -465,7 +465,7 @@ int gcov_iter_next(struct gcov_iterator *iter) get_type(iter)->offset += iter->count; iter->count = 0; iter->type++; - /* fall through */ + fallthrough; case RECORD_FUNCTION_CHECK: if (iter->type < iter->num_types) { iter->record = 7; @@ -474,7 +474,7 @@ int gcov_iter_next(struct gcov_iterator *iter) /* Advance to next function */ iter->type = 0; iter->function++; - /* fall through */ + fallthrough; case RECORD_TIME_STAMP: if (iter->function < iter->info->n_functions) iter->record = 3; diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index a4ace611f47f..b38d2fd70fe1 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -165,8 +165,7 @@ irqreturn_t __handle_irq_event_percpu(struct irq_desc *desc, unsigned int *flags } __irq_wake_thread(desc, action); - - /* Fall through - to add to randomness */ + fallthrough; /* to add to randomness */ case IRQ_HANDLED: *flags |= action->flags; break; diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c index 1753486b440c..baa86020f243 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -222,7 +222,7 @@ int irq_do_set_affinity(struct irq_data *data, const struct cpumask *mask, case IRQ_SET_MASK_OK: case IRQ_SET_MASK_OK_DONE: cpumask_copy(desc->irq_common_data.affinity, mask); - /* fall through */ + fallthrough; case IRQ_SET_MASK_OK_NOCOPY: irq_validate_effective_affinity(data); irq_set_thread_affinity(desc); @@ -792,8 +792,7 @@ int __irq_set_trigger(struct irq_desc *desc, unsigned long flags) case IRQ_SET_MASK_OK_DONE: irqd_clear(&desc->irq_data, IRQD_TRIGGER_MASK); irqd_set(&desc->irq_data, flags); - /* fall through */ - + fallthrough; case IRQ_SET_MASK_OK_NOCOPY: flags = irqd_get_trigger_type(&desc->irq_data); irq_settings_set_trigger_mask(desc, flags); diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c index 136ce049c4ad..05ce8a4d4729 100644 --- a/kernel/kallsyms.c +++ b/kernel/kallsyms.c @@ -651,11 +651,11 @@ int kallsyms_show_value(void) case 0: if (kallsyms_for_perf()) return 1; - /* fallthrough */ + fallthrough; case 1: if (has_capability_noaudit(current, CAP_SYSLOG)) return 1; - /* fallthrough */ + fallthrough; default: return 0; } diff --git a/kernel/pid.c b/kernel/pid.c index 0a9f2e437217..b2a005a6dea1 100644 --- a/kernel/pid.c +++ b/kernel/pid.c @@ -144,7 +144,7 @@ void free_pid(struct pid *pid) /* Handle a fork failure of the first process */ WARN_ON(ns->child_reaper); ns->pid_allocated = 0; - /* fall through */ + fallthrough; case 0: schedule_work(&ns->proc_work); break; diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index 3c0a5a8170b0..d091dcd57557 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -647,7 +647,7 @@ static void power_down(void) break; case HIBERNATION_PLATFORM: hibernation_platform_enter(); - /* Fall through */ + fallthrough; case HIBERNATION_SHUTDOWN: if (pm_power_off) kernel_power_off(); diff --git a/kernel/power/qos.c b/kernel/power/qos.c index 9568a2fe7c11..6bf5295b2ade 100644 --- a/kernel/power/qos.c +++ b/kernel/power/qos.c @@ -236,7 +236,7 @@ int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node, * changed */ plist_del(node, &c->list); - /* fall through */ + fallthrough; case PM_QOS_ADD_REQ: plist_node_init(node, new_value); plist_add(node, &c->list); @@ -309,7 +309,7 @@ bool pm_qos_update_flags(struct pm_qos_flags *pqf, break; case PM_QOS_UPDATE_REQ: pm_qos_flags_remove_req(pqf, req); - /* fall through */ + fallthrough; case PM_QOS_ADD_REQ: req->flags = val; INIT_LIST_HEAD(&req->node); diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index ca65327a6de8..6b3d7c68e6fe 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -1531,7 +1531,7 @@ int do_syslog(int type, char __user *buf, int len, int source) /* Read/clear last kernel messages */ case SYSLOG_ACTION_READ_CLEAR: clear = true; - /* FALL THRU */ + fallthrough; /* Read last kernel messages */ case SYSLOG_ACTION_READ_ALL: if (!buf || len < 0) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index dd05a378631a..050b728728f4 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2068,7 +2068,7 @@ static int select_fallback_rq(int cpu, struct task_struct *p) state = possible; break; } - /* Fall-through */ + fallthrough; case possible: do_set_cpus_allowed(p, cpu_possible_mask); state = fail; diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index b5667a273bf6..7d6b84e0caca 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -1224,13 +1224,13 @@ static void __free_domain_allocs(struct s_data *d, enum s_alloc what, case sa_rootdomain: if (!atomic_read(&d->rd->refcount)) free_rootdomain(&d->rd->rcu); - /* Fall through */ + fallthrough; case sa_sd: free_percpu(d->sd); - /* Fall through */ + fallthrough; case sa_sd_storage: __sdt_free(cpu_map); - /* Fall through */ + fallthrough; case sa_none: break; } diff --git a/kernel/signal.c b/kernel/signal.c index c4da1ef56fdf..73bdcc1f2561 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -846,7 +846,7 @@ static int check_kill_permission(int sig, struct kernel_siginfo *info, */ if (!sid || sid == task_session(current)) break; - /* fall through */ + fallthrough; default: return -EPERM; } diff --git a/kernel/sys.c b/kernel/sys.c index a611d1d58c7d..bad4f30e7f37 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1737,8 +1737,7 @@ void getrusage(struct task_struct *p, int who, struct rusage *r) if (who == RUSAGE_CHILDREN) break; - /* fall through */ - + fallthrough; case RUSAGE_SELF: thread_group_cputime_adjusted(p, &tgutime, &tgstime); utime += tgutime; diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index 0d4dc241c0fb..8060a35682e1 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -373,7 +373,7 @@ static bool hrtimer_fixup_activate(void *addr, enum debug_obj_state state) switch (state) { case ODEBUG_STATE_ACTIVE: WARN_ON(1); - /* fall through */ + fallthrough; default: return false; } diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index 0ec5b7a1d769..6cc658391702 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -413,12 +413,12 @@ static struct pid *good_sigevent(sigevent_t * event) rtn = pid_task(pid, PIDTYPE_PID); if (!rtn || !same_thread_group(rtn, current)) return NULL; - /* FALLTHRU */ + fallthrough; case SIGEV_SIGNAL: case SIGEV_THREAD: if (event->sigev_signo <= 0 || event->sigev_signo > SIGRTMAX) return NULL; - /* FALLTHRU */ + fallthrough; case SIGEV_NONE: return pid; default: diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index e51778c312f1..36d7464c8962 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -381,7 +381,7 @@ void tick_broadcast_control(enum tick_broadcast_mode mode) switch (mode) { case TICK_BROADCAST_FORCE: tick_broadcast_forced = 1; - /* fall through */ + fallthrough; case TICK_BROADCAST_ON: cpumask_set_cpu(cpu, tick_broadcast_on); if (!cpumask_test_and_set_cpu(cpu, tick_broadcast_mask)) { diff --git a/kernel/time/timer.c b/kernel/time/timer.c index 4820823515e9..6512d721ef57 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -653,7 +653,7 @@ static bool timer_fixup_activate(void *addr, enum debug_obj_state state) case ODEBUG_STATE_ACTIVE: WARN_ON(1); - /* fall through */ + fallthrough; default: return false; } diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 2d6e93ab0478..0a1753dc69d3 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -717,7 +717,7 @@ int blk_trace_ioctl(struct block_device *bdev, unsigned cmd, char __user *arg) #endif case BLKTRACESTART: start = 1; - /* fall through */ + fallthrough; case BLKTRACESTOP: ret = __blk_trace_startstop(q, start); break; diff --git a/kernel/trace/trace_events_filter.c b/kernel/trace/trace_events_filter.c index c9a74f82b14a..78b0bfc4d72e 100644 --- a/kernel/trace/trace_events_filter.c +++ b/kernel/trace/trace_events_filter.c @@ -499,7 +499,7 @@ predicate_parse(const char *str, int nr_parens, int nr_preds, ptr++; break; } - /* fall through */ + fallthrough; default: parse_error(pe, FILT_ERR_TOO_MANY_PREDS, next - str); @@ -1273,7 +1273,7 @@ static int parse_pred(const char *str, void *data, switch (op) { case OP_NE: pred->not = 1; - /* Fall through */ + fallthrough; case OP_GLOB: case OP_EQ: break;
