From df561f6688fef775baa341a0f5d960becd248b11 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Sun, 23 Aug 2020 17:36:59 -0500 Subject: treewide: Use fallthrough pseudo-keyword Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva --- kernel/auditfilter.c | 2 +- kernel/bpf/cgroup.c | 2 +- kernel/bpf/cpumap.c | 2 +- kernel/bpf/syscall.c | 2 +- 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 | 2 +- kernel/irq/handle.c | 2 +- kernel/irq/manage.c | 4 ++-- kernel/kallsyms.c | 4 ++-- kernel/power/hibernate.c | 2 +- kernel/power/qos.c | 4 ++-- kernel/sched/core.c | 2 +- kernel/sched/topology.c | 6 +++--- kernel/signal.c | 2 +- kernel/sys.c | 2 +- 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 ++-- 26 files changed, 41 insertions(+), 41 deletions(-) (limited to 'kernel') diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c index a10e2997aa6c..333b3bcfc545 100644 --- a/kernel/auditfilter.c +++ b/kernel/auditfilter.c @@ -681,7 +681,7 @@ 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 83ff127ef7ae..e21de4f1754c 100644 --- a/kernel/bpf/cgroup.c +++ b/kernel/bpf/cgroup.c @@ -1794,7 +1794,7 @@ 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/cpumap.c b/kernel/bpf/cpumap.c index f1c46529929b..6386b7bb98f2 100644 --- a/kernel/bpf/cpumap.c +++ b/kernel/bpf/cpumap.c @@ -279,7 +279,7 @@ static int cpu_map_bpf_prog_run_xdp(struct bpf_cpu_map_entry *rcpu, break; default: bpf_warn_invalid_xdp_action(act); - /* fallthrough */ + fallthrough; case XDP_DROP: xdp_return_frame(xdpf); stats->drop++; diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 86299a292214..1bf960aa615c 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -2029,7 +2029,7 @@ bpf_prog_load_check_attach(enum bpf_prog_type prog_type, case BPF_PROG_TYPE_EXT: if (expected_attach_type) return -EINVAL; - /* fallthrough */ + fallthrough; default: return 0; } diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index ef938f17b944..47e74f09fa37 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -5236,7 +5236,7 @@ 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; } @@ -10988,7 +10988,7 @@ static int check_attach_btf_id(struct bpf_verifier_env *env) default: if (!prog_extension) return -EINVAL; - /* fallthrough */ + fallthrough; case BPF_MODIFY_RETURN: case BPF_LSM_MAC: case BPF_TRACE_FENTRY: 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 b8d2800bb4b7..05adfd6fa8bf 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -255,11 +255,11 @@ 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 a790026e42d0..cc3c43dfec44 100644 --- a/kernel/debug/gdbstub.c +++ b/kernel/debug/gdbstub.c @@ -1046,14 +1046,14 @@ 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) { @@ -1062,7 +1062,7 @@ 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 004c5b6c87f8..6226502ce049 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 5bfe8e3c6e44..7ed5248f0445 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -10034,7 +10034,7 @@ 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: diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c index a8e14c80b405..762a928e18f9 100644 --- a/kernel/irq/handle.c +++ b/kernel/irq/handle.c @@ -173,7 +173,7 @@ 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 52ac5391dcc6..5df903fccb60 100644 --- a/kernel/irq/manage.c +++ b/kernel/irq/manage.c @@ -271,7 +271,7 @@ 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); @@ -868,7 +868,7 @@ 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); diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c index 95cb74f73292..4fb15fa96734 100644 --- a/kernel/kallsyms.c +++ b/kernel/kallsyms.c @@ -684,12 +684,12 @@ bool kallsyms_show_value(const struct cred *cred) case 0: if (kallsyms_for_perf()) return true; - /* fallthrough */ + fallthrough; case 1: if (security_capable(cred, &init_user_ns, CAP_SYSLOG, CAP_OPT_NOAUDIT) == 0) return true; - /* fallthrough */ + fallthrough; default: return false; } diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index f33769f97aca..e7aa57fb2fdc 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -659,7 +659,7 @@ 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 db0bed2cae26..ec7e1e85923e 100644 --- a/kernel/power/qos.c +++ b/kernel/power/qos.c @@ -119,7 +119,7 @@ int pm_qos_update_target(struct pm_qos_constraints *c, struct plist_node *node, * and add, then see if the aggregate has 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); @@ -188,7 +188,7 @@ 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/sched/core.c b/kernel/sched/core.c index 8471a0f7eb32..2d95dc3f4644 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2320,7 +2320,7 @@ 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 007b0a6b0152..1bd7e3af904f 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -1219,13 +1219,13 @@ 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 42b67d2cea37..a38b3edc6851 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -851,7 +851,7 @@ 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 ca11af9d815d..ab6c409b1159 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1753,7 +1753,7 @@ 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); diff --git a/kernel/time/hrtimer.c b/kernel/time/hrtimer.c index c4038511d5c9..95b6a708b040 100644 --- a/kernel/time/hrtimer.c +++ b/kernel/time/hrtimer.c @@ -377,7 +377,7 @@ 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 07709ac30439..bf540f5a4115 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -439,12 +439,12 @@ 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 a16764b0116e..a50364df1054 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -666,7 +666,7 @@ 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 7ba62d68885a..4b3a42fc3b24 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -745,7 +745,7 @@ 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 bf44f6bbd0c3..78a678eeb140 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; -- cgit v1.2.3-70-g09d2