Update Linux to v5.4.148
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.4.148.tar.gz
Change-Id: Ib3d26c5ba9b022e2e03533005c4fed4d7c30b61b
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/include/linux/sched/coredump.h b/include/linux/sched/coredump.h
index ecdc654..dfd82ea 100644
--- a/include/linux/sched/coredump.h
+++ b/include/linux/sched/coredump.h
@@ -72,6 +72,7 @@
#define MMF_DISABLE_THP 24 /* disable THP for all VMAs */
#define MMF_OOM_VICTIM 25 /* mm is the oom victim */
#define MMF_OOM_REAP_QUEUED 26 /* mm was queued for oom_reaper */
+#define MMF_MULTIPROCESS 27 /* mm is shared between processes */
#define MMF_DISABLE_THP_MASK (1 << MMF_DISABLE_THP)
#define MMF_INIT_MASK (MMF_DUMPABLE_MASK | MMF_DUMP_FILTER_MASK |\
diff --git a/include/linux/sched/cpufreq.h b/include/linux/sched/cpufreq.h
index afa940c..cc6bcc1 100644
--- a/include/linux/sched/cpufreq.h
+++ b/include/linux/sched/cpufreq.h
@@ -12,6 +12,8 @@
#define SCHED_CPUFREQ_MIGRATION (1U << 1)
#ifdef CONFIG_CPU_FREQ
+struct cpufreq_policy;
+
struct update_util_data {
void (*func)(struct update_util_data *data, u64 time, unsigned int flags);
};
@@ -20,6 +22,7 @@
void (*func)(struct update_util_data *data, u64 time,
unsigned int flags));
void cpufreq_remove_update_util_hook(int cpu);
+bool cpufreq_this_cpu_can_update(struct cpufreq_policy *policy);
static inline unsigned long map_util_freq(unsigned long util,
unsigned long freq, unsigned long cap)
diff --git a/include/linux/sched/mm.h b/include/linux/sched/mm.h
index c49257a..3a1d899 100644
--- a/include/linux/sched/mm.h
+++ b/include/linux/sched/mm.h
@@ -49,6 +49,8 @@
__mmdrop(mm);
}
+void mmdrop(struct mm_struct *mm);
+
/*
* This has to be called after a get_task_mm()/mmget_not_zero()
* followed by taking the mmap_sem for writing before modifying the
@@ -165,7 +167,8 @@
* another oom-unkillable task does this it should blame itself.
*/
rcu_read_lock();
- ret = tsk->vfork_done && tsk->real_parent->mm == tsk->mm;
+ ret = tsk->vfork_done &&
+ rcu_dereference(tsk->real_parent)->mm == tsk->mm;
rcu_read_unlock();
return ret;
diff --git a/include/linux/sched/nohz.h b/include/linux/sched/nohz.h
index 1abe91f..6d67e9a 100644
--- a/include/linux/sched/nohz.h
+++ b/include/linux/sched/nohz.h
@@ -15,9 +15,11 @@
#ifdef CONFIG_NO_HZ_COMMON
void calc_load_nohz_start(void);
+void calc_load_nohz_remote(struct rq *rq);
void calc_load_nohz_stop(void);
#else
static inline void calc_load_nohz_start(void) { }
+static inline void calc_load_nohz_remote(struct rq *rq) { }
static inline void calc_load_nohz_stop(void) { }
#endif /* CONFIG_NO_HZ_COMMON */
diff --git a/include/linux/sched/signal.h b/include/linux/sched/signal.h
index 8805025..b3f8847 100644
--- a/include/linux/sched/signal.h
+++ b/include/linux/sched/signal.h
@@ -224,7 +224,15 @@
struct mutex cred_guard_mutex; /* guard against foreign influences on
* credential calculations
- * (notably. ptrace) */
+ * (notably. ptrace)
+ * Deprecated do not use in new code.
+ * Use exec_update_lock instead.
+ */
+ struct rw_semaphore exec_update_lock; /* Held while task_struct is
+ * being updated during exec,
+ * and may have inconsistent
+ * permissions.
+ */
} __randomize_layout;
/*
@@ -501,6 +509,17 @@
#define SEND_SIG_NOINFO ((struct kernel_siginfo *) 0)
#define SEND_SIG_PRIV ((struct kernel_siginfo *) 1)
+static inline int __on_sig_stack(unsigned long sp)
+{
+#ifdef CONFIG_STACK_GROWSUP
+ return sp >= current->sas_ss_sp &&
+ sp - current->sas_ss_sp < current->sas_ss_size;
+#else
+ return sp > current->sas_ss_sp &&
+ sp - current->sas_ss_sp <= current->sas_ss_size;
+#endif
+}
+
/*
* True if we are on the alternate signal stack.
*/
@@ -518,13 +537,7 @@
if (current->sas_ss_flags & SS_AUTODISARM)
return 0;
-#ifdef CONFIG_STACK_GROWSUP
- return sp >= current->sas_ss_sp &&
- sp - current->sas_ss_sp < current->sas_ss_size;
-#else
- return sp > current->sas_ss_sp &&
- sp - current->sas_ss_sp <= current->sas_ss_size;
-#endif
+ return __on_sig_stack(sp);
}
static inline int sas_ss_flags(unsigned long sp)