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-rw-r--r--kernel/dma/contiguous.c5
-rw-r--r--kernel/events/core.c6
-rw-r--r--kernel/kexec_core.c1
-rw-r--r--kernel/module/main.c17
-rw-r--r--kernel/power/hibernate.c3
-rw-r--r--kernel/power/power.h5
-rw-r--r--kernel/power/suspend.c3
-rw-r--r--kernel/sched/core.c7
-rw-r--r--kernel/sched/deadline.c10
-rw-r--r--kernel/stop_machine.c20
10 files changed, 41 insertions, 36 deletions
diff --git a/kernel/dma/contiguous.c b/kernel/dma/contiguous.c
index 8df0dfaaca18..67af8a55185d 100644
--- a/kernel/dma/contiguous.c
+++ b/kernel/dma/contiguous.c
@@ -222,7 +222,10 @@ void __init dma_contiguous_reserve(phys_addr_t limit)
if (size_cmdline != -1) {
selected_size = size_cmdline;
selected_base = base_cmdline;
- selected_limit = min_not_zero(limit_cmdline, limit);
+
+ /* Hornor the user setup dma address limit */
+ selected_limit = limit_cmdline ?: limit;
+
if (base_cmdline + size_cmdline == limit_cmdline)
fixed = true;
} else {
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 7281230044d0..0db36b2b2448 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -951,8 +951,6 @@ static void perf_cgroup_switch(struct task_struct *task)
if (READ_ONCE(cpuctx->cgrp) == NULL)
return;
- WARN_ON_ONCE(cpuctx->ctx.nr_cgroups == 0);
-
cgrp = perf_cgroup_from_task(task, NULL);
if (READ_ONCE(cpuctx->cgrp) == cgrp)
return;
@@ -964,6 +962,8 @@ static void perf_cgroup_switch(struct task_struct *task)
if (READ_ONCE(cpuctx->cgrp) == NULL)
return;
+ WARN_ON_ONCE(cpuctx->ctx.nr_cgroups == 0);
+
perf_ctx_disable(&cpuctx->ctx, true);
ctx_sched_out(&cpuctx->ctx, NULL, EVENT_ALL|EVENT_CGROUP);
@@ -11116,7 +11116,7 @@ static int perf_uprobe_event_init(struct perf_event *event)
if (event->attr.type != perf_uprobe.type)
return -ENOENT;
- if (!perfmon_capable())
+ if (!capable(CAP_SYS_ADMIN))
return -EACCES;
/*
diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c
index 9c59fa480b0b..3a9a9f240dbc 100644
--- a/kernel/kexec_core.c
+++ b/kernel/kexec_core.c
@@ -1136,6 +1136,7 @@ int kernel_kexec(void)
Resume_devices:
dpm_resume_end(PMSG_RESTORE);
Resume_console:
+ pm_restore_gfp_mask();
console_resume_all();
thaw_processes();
Restore_console:
diff --git a/kernel/module/main.c b/kernel/module/main.c
index 413ac6ea3702..c2c08007029d 100644
--- a/kernel/module/main.c
+++ b/kernel/module/main.c
@@ -1573,8 +1573,14 @@ static int apply_relocations(struct module *mod, const struct load_info *info)
if (infosec >= info->hdr->e_shnum)
continue;
- /* Don't bother with non-allocated sections */
- if (!(info->sechdrs[infosec].sh_flags & SHF_ALLOC))
+ /*
+ * Don't bother with non-allocated sections.
+ * An exception is the percpu section, which has separate allocations
+ * for individual CPUs. We relocate the percpu section in the initial
+ * ELF template and subsequently copy it to the per-CPU destinations.
+ */
+ if (!(info->sechdrs[infosec].sh_flags & SHF_ALLOC) &&
+ (!infosec || infosec != info->index.pcpu))
continue;
if (info->sechdrs[i].sh_flags & SHF_RELA_LIVEPATCH)
@@ -2696,9 +2702,8 @@ static int find_module_sections(struct module *mod, struct load_info *info)
static int move_module(struct module *mod, struct load_info *info)
{
- int i;
- enum mod_mem_type t = 0;
- int ret = -ENOMEM;
+ int i, ret;
+ enum mod_mem_type t = MOD_MEM_NUM_TYPES;
bool codetag_section_found = false;
for_each_mod_mem_type(type) {
@@ -2776,7 +2781,7 @@ static int move_module(struct module *mod, struct load_info *info)
return 0;
out_err:
module_memory_restore_rox(mod);
- for (t--; t >= 0; t--)
+ while (t--)
module_memory_free(mod, t);
if (codetag_section_found)
codetag_free_module_sections(mod);
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index 519fb09de5e0..9216e3b91d3b 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -423,7 +423,6 @@ int hibernation_snapshot(int platform_mode)
}
console_suspend_all();
- pm_restrict_gfp_mask();
error = dpm_suspend(PMSG_FREEZE);
@@ -559,7 +558,6 @@ int hibernation_restore(int platform_mode)
pm_prepare_console();
console_suspend_all();
- pm_restrict_gfp_mask();
error = dpm_suspend_start(PMSG_QUIESCE);
if (!error) {
error = resume_target_kernel(platform_mode);
@@ -571,7 +569,6 @@ int hibernation_restore(int platform_mode)
BUG_ON(!error);
}
dpm_resume_end(PMSG_RECOVER);
- pm_restore_gfp_mask();
console_resume_all();
pm_restore_console();
return error;
diff --git a/kernel/power/power.h b/kernel/power/power.h
index cb1d71562002..7ccd709af93f 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -239,11 +239,6 @@ static inline void suspend_test_finish(const char *label) {}
/* kernel/power/main.c */
extern int pm_notifier_call_chain_robust(unsigned long val_up, unsigned long val_down);
extern int pm_notifier_call_chain(unsigned long val);
-void pm_restrict_gfp_mask(void);
-void pm_restore_gfp_mask(void);
-#else
-static inline void pm_restrict_gfp_mask(void) {}
-static inline void pm_restore_gfp_mask(void) {}
#endif
#ifdef CONFIG_HIGHMEM
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 76b141b9aac0..bb608b68fb30 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -540,6 +540,7 @@ int suspend_devices_and_enter(suspend_state_t state)
return error;
Recover_platform:
+ pm_restore_gfp_mask();
platform_recover(state);
goto Resume_devices;
}
@@ -606,9 +607,7 @@ static int enter_state(suspend_state_t state)
trace_suspend_resume(TPS("suspend_enter"), state, false);
pm_pr_dbg("Suspending system (%s)\n", mem_sleep_labels[state]);
- pm_restrict_gfp_mask();
error = suspend_devices_and_enter(state);
- pm_restore_gfp_mask();
Finish:
events_check_enabled = false;
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 8988d38d46a3..ec68fc686bd7 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -3943,6 +3943,11 @@ static inline bool ttwu_queue_cond(struct task_struct *p, int cpu)
if (!scx_allow_ttwu_queue(p))
return false;
+#ifdef CONFIG_SMP
+ if (p->sched_class == &stop_sched_class)
+ return false;
+#endif
+
/*
* Do not complicate things with the async wake_list while the CPU is
* in hotplug state.
@@ -7663,7 +7668,7 @@ const char *preempt_model_str(void)
if (IS_ENABLED(CONFIG_PREEMPT_DYNAMIC)) {
seq_buf_printf(&s, "(%s)%s",
- preempt_dynamic_mode > 0 ?
+ preempt_dynamic_mode >= 0 ?
preempt_modes[preempt_dynamic_mode] : "undef",
brace ? "}" : "");
return seq_buf_str(&s);
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index ad45a8fea245..89019a140826 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -1504,7 +1504,9 @@ static void update_curr_dl_se(struct rq *rq, struct sched_dl_entity *dl_se, s64
if (dl_entity_is_special(dl_se))
return;
- scaled_delta_exec = dl_scaled_delta_exec(rq, dl_se, delta_exec);
+ scaled_delta_exec = delta_exec;
+ if (!dl_server(dl_se))
+ scaled_delta_exec = dl_scaled_delta_exec(rq, dl_se, delta_exec);
dl_se->runtime -= scaled_delta_exec;
@@ -1611,7 +1613,7 @@ throttle:
*/
void dl_server_update_idle_time(struct rq *rq, struct task_struct *p)
{
- s64 delta_exec, scaled_delta_exec;
+ s64 delta_exec;
if (!rq->fair_server.dl_defer)
return;
@@ -1624,9 +1626,7 @@ void dl_server_update_idle_time(struct rq *rq, struct task_struct *p)
if (delta_exec < 0)
return;
- scaled_delta_exec = dl_scaled_delta_exec(rq, &rq->fair_server, delta_exec);
-
- rq->fair_server.runtime -= scaled_delta_exec;
+ rq->fair_server.runtime -= delta_exec;
if (rq->fair_server.runtime < 0) {
rq->fair_server.dl_defer_running = 0;
diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c
index 5d2d0562115b..3fe6b0c99f3d 100644
--- a/kernel/stop_machine.c
+++ b/kernel/stop_machine.c
@@ -82,18 +82,15 @@ static void cpu_stop_signal_done(struct cpu_stop_done *done)
}
static void __cpu_stop_queue_work(struct cpu_stopper *stopper,
- struct cpu_stop_work *work,
- struct wake_q_head *wakeq)
+ struct cpu_stop_work *work)
{
list_add_tail(&work->list, &stopper->works);
- wake_q_add(wakeq, stopper->thread);
}
/* queue @work to @stopper. if offline, @work is completed immediately */
static bool cpu_stop_queue_work(unsigned int cpu, struct cpu_stop_work *work)
{
struct cpu_stopper *stopper = &per_cpu(cpu_stopper, cpu);
- DEFINE_WAKE_Q(wakeq);
unsigned long flags;
bool enabled;
@@ -101,12 +98,13 @@ static bool cpu_stop_queue_work(unsigned int cpu, struct cpu_stop_work *work)
raw_spin_lock_irqsave(&stopper->lock, flags);
enabled = stopper->enabled;
if (enabled)
- __cpu_stop_queue_work(stopper, work, &wakeq);
+ __cpu_stop_queue_work(stopper, work);
else if (work->done)
cpu_stop_signal_done(work->done);
raw_spin_unlock_irqrestore(&stopper->lock, flags);
- wake_up_q(&wakeq);
+ if (enabled)
+ wake_up_process(stopper->thread);
preempt_enable();
return enabled;
@@ -264,7 +262,6 @@ static int cpu_stop_queue_two_works(int cpu1, struct cpu_stop_work *work1,
{
struct cpu_stopper *stopper1 = per_cpu_ptr(&cpu_stopper, cpu1);
struct cpu_stopper *stopper2 = per_cpu_ptr(&cpu_stopper, cpu2);
- DEFINE_WAKE_Q(wakeq);
int err;
retry:
@@ -300,8 +297,8 @@ retry:
}
err = 0;
- __cpu_stop_queue_work(stopper1, work1, &wakeq);
- __cpu_stop_queue_work(stopper2, work2, &wakeq);
+ __cpu_stop_queue_work(stopper1, work1);
+ __cpu_stop_queue_work(stopper2, work2);
unlock:
raw_spin_unlock(&stopper2->lock);
@@ -316,7 +313,10 @@ unlock:
goto retry;
}
- wake_up_q(&wakeq);
+ if (!err) {
+ wake_up_process(stopper1->thread);
+ wake_up_process(stopper2->thread);
+ }
preempt_enable();
return err;
generated by cgit (git 2.34.1) at 2025-07-12 15:05:09 +0000