summaryrefslogtreecommitdiff
path: root/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'kernel')
-rw-r--r--kernel/bpf/btf.c2
-rw-r--r--kernel/bpf/sockmap.c91
-rw-r--r--kernel/bpf/verifier.c2
-rw-r--r--kernel/dma/Kconfig3
-rw-r--r--kernel/events/core.c21
-rw-r--r--kernel/events/hw_breakpoint.c13
-rw-r--r--kernel/jump_label.c2
-rw-r--r--kernel/locking/lockdep.c1
-rw-r--r--kernel/locking/mutex.c3
-rw-r--r--kernel/locking/test-ww_mutex.c2
-rw-r--r--kernel/pid.c2
-rw-r--r--kernel/printk/printk.c12
-rw-r--r--kernel/sched/core.c2
-rw-r--r--kernel/sched/deadline.c2
-rw-r--r--kernel/sched/fair.c92
-rw-r--r--kernel/sched/sched.h3
-rw-r--r--kernel/sys.c3
-rw-r--r--kernel/trace/ring_buffer.c2
18 files changed, 190 insertions, 68 deletions
diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 2590700237c1..138f0302692e 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -1844,7 +1844,7 @@ static int btf_check_all_metas(struct btf_verifier_env *env)
hdr = &btf->hdr;
cur = btf->nohdr_data + hdr->type_off;
- end = btf->nohdr_data + hdr->type_len;
+ end = cur + hdr->type_len;
env->log_type_id = 1;
while (cur < end) {
diff --git a/kernel/bpf/sockmap.c b/kernel/bpf/sockmap.c
index 488ef9663c01..0a0f2ec75370 100644
--- a/kernel/bpf/sockmap.c
+++ b/kernel/bpf/sockmap.c
@@ -132,6 +132,7 @@ struct smap_psock {
struct work_struct gc_work;
struct proto *sk_proto;
+ void (*save_unhash)(struct sock *sk);
void (*save_close)(struct sock *sk, long timeout);
void (*save_data_ready)(struct sock *sk);
void (*save_write_space)(struct sock *sk);
@@ -143,6 +144,7 @@ static int bpf_tcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
static int bpf_tcp_sendmsg(struct sock *sk, struct msghdr *msg, size_t size);
static int bpf_tcp_sendpage(struct sock *sk, struct page *page,
int offset, size_t size, int flags);
+static void bpf_tcp_unhash(struct sock *sk);
static void bpf_tcp_close(struct sock *sk, long timeout);
static inline struct smap_psock *smap_psock_sk(const struct sock *sk)
@@ -184,6 +186,7 @@ static void build_protos(struct proto prot[SOCKMAP_NUM_CONFIGS],
struct proto *base)
{
prot[SOCKMAP_BASE] = *base;
+ prot[SOCKMAP_BASE].unhash = bpf_tcp_unhash;
prot[SOCKMAP_BASE].close = bpf_tcp_close;
prot[SOCKMAP_BASE].recvmsg = bpf_tcp_recvmsg;
prot[SOCKMAP_BASE].stream_memory_read = bpf_tcp_stream_read;
@@ -217,6 +220,7 @@ static int bpf_tcp_init(struct sock *sk)
return -EBUSY;
}
+ psock->save_unhash = sk->sk_prot->unhash;
psock->save_close = sk->sk_prot->close;
psock->sk_proto = sk->sk_prot;
@@ -305,30 +309,12 @@ static struct smap_psock_map_entry *psock_map_pop(struct sock *sk,
return e;
}
-static void bpf_tcp_close(struct sock *sk, long timeout)
+static void bpf_tcp_remove(struct sock *sk, struct smap_psock *psock)
{
- void (*close_fun)(struct sock *sk, long timeout);
struct smap_psock_map_entry *e;
struct sk_msg_buff *md, *mtmp;
- struct smap_psock *psock;
struct sock *osk;
- lock_sock(sk);
- rcu_read_lock();
- psock = smap_psock_sk(sk);
- if (unlikely(!psock)) {
- rcu_read_unlock();
- release_sock(sk);
- return sk->sk_prot->close(sk, timeout);
- }
-
- /* The psock may be destroyed anytime after exiting the RCU critial
- * section so by the time we use close_fun the psock may no longer
- * be valid. However, bpf_tcp_close is called with the sock lock
- * held so the close hook and sk are still valid.
- */
- close_fun = psock->save_close;
-
if (psock->cork) {
free_start_sg(psock->sock, psock->cork, true);
kfree(psock->cork);
@@ -379,6 +365,42 @@ static void bpf_tcp_close(struct sock *sk, long timeout)
kfree(e);
e = psock_map_pop(sk, psock);
}
+}
+
+static void bpf_tcp_unhash(struct sock *sk)
+{
+ void (*unhash_fun)(struct sock *sk);
+ struct smap_psock *psock;
+
+ rcu_read_lock();
+ psock = smap_psock_sk(sk);
+ if (unlikely(!psock)) {
+ rcu_read_unlock();
+ if (sk->sk_prot->unhash)
+ sk->sk_prot->unhash(sk);
+ return;
+ }
+ unhash_fun = psock->save_unhash;
+ bpf_tcp_remove(sk, psock);
+ rcu_read_unlock();
+ unhash_fun(sk);
+}
+
+static void bpf_tcp_close(struct sock *sk, long timeout)
+{
+ void (*close_fun)(struct sock *sk, long timeout);
+ struct smap_psock *psock;
+
+ lock_sock(sk);
+ rcu_read_lock();
+ psock = smap_psock_sk(sk);
+ if (unlikely(!psock)) {
+ rcu_read_unlock();
+ release_sock(sk);
+ return sk->sk_prot->close(sk, timeout);
+ }
+ close_fun = psock->save_close;
+ bpf_tcp_remove(sk, psock);
rcu_read_unlock();
release_sock(sk);
close_fun(sk, timeout);
@@ -2097,8 +2119,12 @@ static int sock_map_update_elem(struct bpf_map *map,
return -EINVAL;
}
+ /* ULPs are currently supported only for TCP sockets in ESTABLISHED
+ * state.
+ */
if (skops.sk->sk_type != SOCK_STREAM ||
- skops.sk->sk_protocol != IPPROTO_TCP) {
+ skops.sk->sk_protocol != IPPROTO_TCP ||
+ skops.sk->sk_state != TCP_ESTABLISHED) {
fput(socket->file);
return -EOPNOTSUPP;
}
@@ -2453,6 +2479,16 @@ static int sock_hash_update_elem(struct bpf_map *map,
return -EINVAL;
}
+ /* ULPs are currently supported only for TCP sockets in ESTABLISHED
+ * state.
+ */
+ if (skops.sk->sk_type != SOCK_STREAM ||
+ skops.sk->sk_protocol != IPPROTO_TCP ||
+ skops.sk->sk_state != TCP_ESTABLISHED) {
+ fput(socket->file);
+ return -EOPNOTSUPP;
+ }
+
lock_sock(skops.sk);
preempt_disable();
rcu_read_lock();
@@ -2543,10 +2579,22 @@ const struct bpf_map_ops sock_hash_ops = {
.map_check_btf = map_check_no_btf,
};
+static bool bpf_is_valid_sock_op(struct bpf_sock_ops_kern *ops)
+{
+ return ops->op == BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB ||
+ ops->op == BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB;
+}
BPF_CALL_4(bpf_sock_map_update, struct bpf_sock_ops_kern *, bpf_sock,
struct bpf_map *, map, void *, key, u64, flags)
{
WARN_ON_ONCE(!rcu_read_lock_held());
+
+ /* ULPs are currently supported only for TCP sockets in ESTABLISHED
+ * state. This checks that the sock ops triggering the update is
+ * one indicating we are (or will be soon) in an ESTABLISHED state.
+ */
+ if (!bpf_is_valid_sock_op(bpf_sock))
+ return -EOPNOTSUPP;
return sock_map_ctx_update_elem(bpf_sock, map, key, flags);
}
@@ -2565,6 +2613,9 @@ BPF_CALL_4(bpf_sock_hash_update, struct bpf_sock_ops_kern *, bpf_sock,
struct bpf_map *, map, void *, key, u64, flags)
{
WARN_ON_ONCE(!rcu_read_lock_held());
+
+ if (!bpf_is_valid_sock_op(bpf_sock))
+ return -EOPNOTSUPP;
return sock_hash_ctx_update_elem(bpf_sock, map, key, flags);
}
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 92246117d2b0..bb07e74b34a2 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -3163,7 +3163,7 @@ static int adjust_reg_min_max_vals(struct bpf_verifier_env *env,
* an arbitrary scalar. Disallow all math except
* pointer subtraction
*/
- if (opcode == BPF_SUB){
+ if (opcode == BPF_SUB && env->allow_ptr_leaks) {
mark_reg_unknown(env, regs, insn->dst_reg);
return 0;
}
diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig
index 9bd54304446f..1b1d63b3634b 100644
--- a/kernel/dma/Kconfig
+++ b/kernel/dma/Kconfig
@@ -23,6 +23,9 @@ config ARCH_HAS_SYNC_DMA_FOR_CPU
bool
select NEED_DMA_MAP_STATE
+config ARCH_HAS_SYNC_DMA_FOR_CPU_ALL
+ bool
+
config DMA_DIRECT_OPS
bool
depends on HAS_DMA
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 2a62b96600ad..dcb093e7b377 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -2867,16 +2867,11 @@ static int perf_event_modify_breakpoint(struct perf_event *bp,
_perf_event_disable(bp);
err = modify_user_hw_breakpoint_check(bp, attr, true);
- if (err) {
- if (!bp->attr.disabled)
- _perf_event_enable(bp);
- return err;
- }
-
- if (!attr->disabled)
+ if (!bp->attr.disabled)
_perf_event_enable(bp);
- return 0;
+
+ return err;
}
static int perf_event_modify_attr(struct perf_event *event,
@@ -3940,6 +3935,12 @@ int perf_event_read_local(struct perf_event *event, u64 *value,
goto out;
}
+ /* If this is a pinned event it must be running on this CPU */
+ if (event->attr.pinned && event->oncpu != smp_processor_id()) {
+ ret = -EBUSY;
+ goto out;
+ }
+
/*
* If the event is currently on this CPU, its either a per-task event,
* or local to this CPU. Furthermore it means its ACTIVE (otherwise
@@ -5948,6 +5949,7 @@ perf_output_sample_ustack(struct perf_output_handle *handle, u64 dump_size,
unsigned long sp;
unsigned int rem;
u64 dyn_size;
+ mm_segment_t fs;
/*
* We dump:
@@ -5965,7 +5967,10 @@ perf_output_sample_ustack(struct perf_output_handle *handle, u64 dump_size,
/* Data. */
sp = perf_user_stack_pointer(regs);
+ fs = get_fs();
+ set_fs(USER_DS);
rem = __output_copy_user(handle, (void *) sp, dump_size);
+ set_fs(fs);
dyn_size = dump_size - rem;
perf_output_skip(handle, rem);
diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c
index b3814fce5ecb..d6b56180827c 100644
--- a/kernel/events/hw_breakpoint.c
+++ b/kernel/events/hw_breakpoint.c
@@ -509,6 +509,8 @@ modify_user_hw_breakpoint_check(struct perf_event *bp, struct perf_event_attr *a
*/
int modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *attr)
{
+ int err;
+
/*
* modify_user_hw_breakpoint can be invoked with IRQs disabled and hence it
* will not be possible to raise IPIs that invoke __perf_event_disable.
@@ -520,15 +522,12 @@ int modify_user_hw_breakpoint(struct perf_event *bp, struct perf_event_attr *att
else
perf_event_disable(bp);
- if (!attr->disabled) {
- int err = modify_user_hw_breakpoint_check(bp, attr, false);
+ err = modify_user_hw_breakpoint_check(bp, attr, false);
- if (err)
- return err;
+ if (!bp->attr.disabled)
perf_event_enable(bp);
- bp->attr.disabled = 0;
- }
- return 0;
+
+ return err;
}
EXPORT_SYMBOL_GPL(modify_user_hw_breakpoint);
diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index 01ebdf1f9f40..2e62503bea0d 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -678,7 +678,7 @@ jump_label_module_notify(struct notifier_block *self, unsigned long val,
case MODULE_STATE_COMING:
ret = jump_label_add_module(mod);
if (ret) {
- WARN(1, "Failed to allocatote memory: jump_label may not work properly.\n");
+ WARN(1, "Failed to allocate memory: jump_label may not work properly.\n");
jump_label_del_module(mod);
}
break;
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index e406c5fdb41e..dd13f865ad40 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -55,7 +55,6 @@
#include "lockdep_internals.h"
-#include <trace/events/preemptirq.h>
#define CREATE_TRACE_POINTS
#include <trace/events/lock.h>
diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c
index 1a81a1257b3f..3f8a35104285 100644
--- a/kernel/locking/mutex.c
+++ b/kernel/locking/mutex.c
@@ -389,7 +389,7 @@ static bool __ww_mutex_wound(struct mutex *lock,
/*
* wake_up_process() paired with set_current_state()
* inserts sufficient barriers to make sure @owner either sees
- * it's wounded in __ww_mutex_lock_check_stamp() or has a
+ * it's wounded in __ww_mutex_check_kill() or has a
* wakeup pending to re-read the wounded state.
*/
if (owner != current)
@@ -946,7 +946,6 @@ __mutex_lock_common(struct mutex *lock, long state, unsigned int subclass,
}
debug_mutex_lock_common(lock, &waiter);
- debug_mutex_add_waiter(lock, &waiter, current);
lock_contended(&lock->dep_map, ip);
diff --git a/kernel/locking/test-ww_mutex.c b/kernel/locking/test-ww_mutex.c
index 5b915b370d5a..0be047dbd897 100644
--- a/kernel/locking/test-ww_mutex.c
+++ b/kernel/locking/test-ww_mutex.c
@@ -324,7 +324,7 @@ static int __test_cycle(unsigned int nthreads)
if (!cycle->result)
continue;
- pr_err("cylic deadlock not resolved, ret[%d/%d] = %d\n",
+ pr_err("cyclic deadlock not resolved, ret[%d/%d] = %d\n",
n, nthreads, cycle->result);
ret = -EINVAL;
break;
diff --git a/kernel/pid.c b/kernel/pid.c
index de1cfc4f75a2..cdf63e53a014 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -195,7 +195,7 @@ struct pid *alloc_pid(struct pid_namespace *ns)
idr_preload_end();
if (nr < 0) {
- retval = nr;
+ retval = (nr == -ENOSPC) ? -EAGAIN : nr;
goto out_free;
}
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index fd6f8ed28e01..9bf5404397e0 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -351,7 +351,6 @@ static int console_msg_format = MSG_FORMAT_DEFAULT;
*/
enum log_flags {
- LOG_NOCONS = 1, /* suppress print, do not print to console */
LOG_NEWLINE = 2, /* text ended with a newline */
LOG_PREFIX = 4, /* text started with a prefix */
LOG_CONT = 8, /* text is a fragment of a continuation line */
@@ -1881,9 +1880,6 @@ int vprintk_store(int facility, int level,
if (dict)
lflags |= LOG_PREFIX|LOG_NEWLINE;
- if (suppress_message_printing(level))
- lflags |= LOG_NOCONS;
-
return log_output(facility, level, lflags,
dict, dictlen, text, text_len);
}
@@ -2032,6 +2028,7 @@ static void call_console_drivers(const char *ext_text, size_t ext_len,
const char *text, size_t len) {}
static size_t msg_print_text(const struct printk_log *msg,
bool syslog, char *buf, size_t size) { return 0; }
+static bool suppress_message_printing(int level) { return false; }
#endif /* CONFIG_PRINTK */
@@ -2368,10 +2365,11 @@ skip:
break;
msg = log_from_idx(console_idx);
- if (msg->flags & LOG_NOCONS) {
+ if (suppress_message_printing(msg->level)) {
/*
- * Skip record if !ignore_loglevel, and
- * record has level above the console loglevel.
+ * Skip record we have buffered and already printed
+ * directly to the console when we received it, and
+ * record that has level above the console loglevel.
*/
console_idx = log_next(console_idx);
console_seq++;
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 625bc9897f62..ad97f3ba5ec5 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1167,7 +1167,7 @@ void set_task_cpu(struct task_struct *p, unsigned int new_cpu)
if (task_cpu(p) != new_cpu) {
if (p->sched_class->migrate_task_rq)
- p->sched_class->migrate_task_rq(p);
+ p->sched_class->migrate_task_rq(p, new_cpu);
p->se.nr_migrations++;
rseq_migrate(p);
perf_event_task_migrate(p);
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index 997ea7b839fa..91e4202b0634 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -1607,7 +1607,7 @@ out:
return cpu;
}
-static void migrate_task_rq_dl(struct task_struct *p)
+static void migrate_task_rq_dl(struct task_struct *p, int new_cpu __maybe_unused)
{
struct rq *rq;
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 6bd142d19549..1d92ed2eca8b 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1492,6 +1492,21 @@ struct task_numa_env {
static void task_numa_assign(struct task_numa_env *env,
struct task_struct *p, long imp)
{
+ struct rq *rq = cpu_rq(env->dst_cpu);
+
+ /* Bail out if run-queue part of active NUMA balance. */
+ if (xchg(&rq->numa_migrate_on, 1))
+ return;
+
+ /*
+ * Clear previous best_cpu/rq numa-migrate flag, since task now
+ * found a better CPU to move/swap.
+ */
+ if (env->best_cpu != -1) {
+ rq = cpu_rq(env->best_cpu);
+ WRITE_ONCE(rq->numa_migrate_on, 0);
+ }
+
if (env->best_task)
put_task_struct(env->best_task);
if (p)
@@ -1531,6 +1546,13 @@ static bool load_too_imbalanced(long src_load, long dst_load,
}
/*
+ * Maximum NUMA importance can be 1998 (2*999);
+ * SMALLIMP @ 30 would be close to 1998/64.
+ * Used to deter task migration.
+ */
+#define SMALLIMP 30
+
+/*
* This checks if the overall compute and NUMA accesses of the system would
* be improved if the source tasks was migrated to the target dst_cpu taking
* into account that it might be best if task running on the dst_cpu should
@@ -1547,6 +1569,9 @@ static void task_numa_compare(struct task_numa_env *env,
long moveimp = imp;
int dist = env->dist;
+ if (READ_ONCE(dst_rq->numa_migrate_on))
+ return;
+
rcu_read_lock();
cur = task_rcu_dereference(&dst_rq->curr);
if (cur && ((cur->flags & PF_EXITING) || is_idle_task(cur)))
@@ -1560,7 +1585,7 @@ static void task_numa_compare(struct task_numa_env *env,
goto unlock;
if (!cur) {
- if (maymove || imp > env->best_imp)
+ if (maymove && moveimp >= env->best_imp)
goto assign;
else
goto unlock;
@@ -1603,16 +1628,22 @@ static void task_numa_compare(struct task_numa_env *env,
task_weight(cur, env->dst_nid, dist);
}
- if (imp <= env->best_imp)
- goto unlock;
-
if (maymove && moveimp > imp && moveimp > env->best_imp) {
- imp = moveimp - 1;
+ imp = moveimp;
cur = NULL;
goto assign;
}
/*
+ * If the NUMA importance is less than SMALLIMP,
+ * task migration might only result in ping pong
+ * of tasks and also hurt performance due to cache
+ * misses.
+ */
+ if (imp < SMALLIMP || imp <= env->best_imp + SMALLIMP / 2)
+ goto unlock;
+
+ /*
* In the overloaded case, try and keep the load balanced.
*/
load = task_h_load(env->p) - task_h_load(cur);
@@ -1688,6 +1719,7 @@ static int task_numa_migrate(struct task_struct *p)
.best_cpu = -1,
};
struct sched_domain *sd;
+ struct rq *best_rq;
unsigned long taskweight, groupweight;
int nid, ret, dist;
long taskimp, groupimp;
@@ -1783,20 +1815,17 @@ static int task_numa_migrate(struct task_struct *p)
if (env.best_cpu == -1)
return -EAGAIN;
- /*
- * Reset the scan period if the task is being rescheduled on an
- * alternative node to recheck if the tasks is now properly placed.
- */
- p->numa_scan_period = task_scan_start(p);
-
+ best_rq = cpu_rq(env.best_cpu);
if (env.best_task == NULL) {
ret = migrate_task_to(p, env.best_cpu);
+ WRITE_ONCE(best_rq->numa_migrate_on, 0);
if (ret != 0)
trace_sched_stick_numa(p, env.src_cpu, env.best_cpu);
return ret;
}
ret = migrate_swap(p, env.best_task, env.best_cpu, env.src_cpu);
+ WRITE_ONCE(best_rq->numa_migrate_on, 0);
if (ret != 0)
trace_sched_stick_numa(p, env.src_cpu, task_cpu(env.best_task));
@@ -2574,6 +2603,39 @@ void task_tick_numa(struct rq *rq, struct task_struct *curr)
}
}
+static void update_scan_period(struct task_struct *p, int new_cpu)
+{
+ int src_nid = cpu_to_node(task_cpu(p));
+ int dst_nid = cpu_to_node(new_cpu);
+
+ if (!static_branch_likely(&sched_numa_balancing))
+ return;
+
+ if (!p->mm || !p->numa_faults || (p->flags & PF_EXITING))
+ return;
+
+ if (src_nid == dst_nid)
+ return;
+
+ /*
+ * Allow resets if faults have been trapped before one scan
+ * has completed. This is most likely due to a new task that
+ * is pulled cross-node due to wakeups or load balancing.
+ */
+ if (p->numa_scan_seq) {
+ /*
+ * Avoid scan adjustments if moving to the preferred
+ * node or if the task was not previously running on
+ * the preferred node.
+ */
+ if (dst_nid == p->numa_preferred_nid ||
+ (p->numa_preferred_nid != -1 && src_nid != p->numa_preferred_nid))
+ return;
+ }
+
+ p->numa_scan_period = task_scan_start(p);
+}
+
#else
static void task_tick_numa(struct rq *rq, struct task_struct *curr)
{
@@ -2587,6 +2649,10 @@ static inline void account_numa_dequeue(struct rq *rq, struct task_struct *p)
{
}
+static inline void update_scan_period(struct task_struct *p, int new_cpu)
+{
+}
+
#endif /* CONFIG_NUMA_BALANCING */
static void
@@ -6280,7 +6346,7 @@ static void detach_entity_cfs_rq(struct sched_entity *se);
* cfs_rq_of(p) references at time of call are still valid and identify the
* previous CPU. The caller guarantees p->pi_lock or task_rq(p)->lock is held.
*/
-static void migrate_task_rq_fair(struct task_struct *p)
+static void migrate_task_rq_fair(struct task_struct *p, int new_cpu)
{
/*
* As blocked tasks retain absolute vruntime the migration needs to
@@ -6333,6 +6399,8 @@ static void migrate_task_rq_fair(struct task_struct *p)
/* We have migrated, no longer consider this task hot */
p->se.exec_start = 0;
+
+ update_scan_period(p, new_cpu);
}
static void task_dead_fair(struct task_struct *p)
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 3a4ef8f73f08..632804fa0b12 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -787,6 +787,7 @@ struct rq {
#ifdef CONFIG_NUMA_BALANCING
unsigned int nr_numa_running;
unsigned int nr_preferred_running;
+ unsigned int numa_migrate_on;
#endif
#define CPU_LOAD_IDX_MAX 5
unsigned long cpu_load[CPU_LOAD_IDX_MAX];
@@ -1531,7 +1532,7 @@ struct sched_class {
#ifdef CONFIG_SMP
int (*select_task_rq)(struct task_struct *p, int task_cpu, int sd_flag, int flags);
- void (*migrate_task_rq)(struct task_struct *p);
+ void (*migrate_task_rq)(struct task_struct *p, int new_cpu);
void (*task_woken)(struct rq *this_rq, struct task_struct *task);
diff --git a/kernel/sys.c b/kernel/sys.c
index cf5c67533ff1..123bd73046ec 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -71,9 +71,6 @@
#include <asm/io.h>
#include <asm/unistd.h>
-/* Hardening for Spectre-v1 */
-#include <linux/nospec.h>
-
#include "uid16.h"
#ifndef SET_UNALIGN_CTL
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 1d92d4a982fd..65bd4616220d 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -1546,6 +1546,8 @@ rb_remove_pages(struct ring_buffer_per_cpu *cpu_buffer, unsigned long nr_pages)
tmp_iter_page = first_page;
do {
+ cond_resched();
+
to_remove_page = tmp_iter_page;
rb_inc_page(cpu_buffer, &tmp_iter_page);
generated by cgit (git 2.34.1) at 2024-06-09 06:40:20 +0000