summaryrefslogtreecommitdiffstats
path: root/drivers/base
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--drivers/base/arch_numa.c2
-rw-r--r--drivers/base/core.c15
-rw-r--r--drivers/base/cpu.c8
-rw-r--r--drivers/base/power/domain.c2
4 files changed, 21 insertions, 6 deletions
diff --git a/drivers/base/arch_numa.c b/drivers/base/arch_numa.c
index eaa31e567..5b59d133b 100644
--- a/drivers/base/arch_numa.c
+++ b/drivers/base/arch_numa.c
@@ -144,7 +144,7 @@ void __init early_map_cpu_to_node(unsigned int cpu, int nid)
unsigned long __per_cpu_offset[NR_CPUS] __read_mostly;
EXPORT_SYMBOL(__per_cpu_offset);
-static int __init early_cpu_to_node(int cpu)
+int __init early_cpu_to_node(int cpu)
{
return cpu_to_node_map[cpu];
}
diff --git a/drivers/base/core.c b/drivers/base/core.c
index af90bfb0c..3078f44dc 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -337,10 +337,12 @@ static bool device_is_ancestor(struct device *dev, struct device *target)
return false;
}
+#define DL_MARKER_FLAGS (DL_FLAG_INFERRED | \
+ DL_FLAG_CYCLE | \
+ DL_FLAG_MANAGED)
static inline bool device_link_flag_is_sync_state_only(u32 flags)
{
- return (flags & ~(DL_FLAG_INFERRED | DL_FLAG_CYCLE)) ==
- (DL_FLAG_SYNC_STATE_ONLY | DL_FLAG_MANAGED);
+ return (flags & ~DL_MARKER_FLAGS) == DL_FLAG_SYNC_STATE_ONLY;
}
/**
@@ -2054,9 +2056,14 @@ static int fw_devlink_create_devlink(struct device *con,
/*
* SYNC_STATE_ONLY device links don't block probing and supports cycles.
- * So cycle detection isn't necessary and shouldn't be done.
+ * So, one might expect that cycle detection isn't necessary for them.
+ * However, if the device link was marked as SYNC_STATE_ONLY because
+ * it's part of a cycle, then we still need to do cycle detection. This
+ * is because the consumer and supplier might be part of multiple cycles
+ * and we need to detect all those cycles.
*/
- if (!(flags & DL_FLAG_SYNC_STATE_ONLY)) {
+ if (!device_link_flag_is_sync_state_only(flags) ||
+ flags & DL_FLAG_CYCLE) {
device_links_write_lock();
if (__fw_devlink_relax_cycles(con, sup_handle)) {
__fwnode_link_cycle(link);
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c
index dab70a653..31da94afe 100644
--- a/drivers/base/cpu.c
+++ b/drivers/base/cpu.c
@@ -589,6 +589,12 @@ ssize_t __weak cpu_show_spec_rstack_overflow(struct device *dev,
return sysfs_emit(buf, "Not affected\n");
}
+ssize_t __weak cpu_show_reg_file_data_sampling(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ return sysfs_emit(buf, "Not affected\n");
+}
+
static DEVICE_ATTR(meltdown, 0444, cpu_show_meltdown, NULL);
static DEVICE_ATTR(spectre_v1, 0444, cpu_show_spectre_v1, NULL);
static DEVICE_ATTR(spectre_v2, 0444, cpu_show_spectre_v2, NULL);
@@ -602,6 +608,7 @@ static DEVICE_ATTR(mmio_stale_data, 0444, cpu_show_mmio_stale_data, NULL);
static DEVICE_ATTR(retbleed, 0444, cpu_show_retbleed, NULL);
static DEVICE_ATTR(gather_data_sampling, 0444, cpu_show_gds, NULL);
static DEVICE_ATTR(spec_rstack_overflow, 0444, cpu_show_spec_rstack_overflow, NULL);
+static DEVICE_ATTR(reg_file_data_sampling, 0444, cpu_show_reg_file_data_sampling, NULL);
static struct attribute *cpu_root_vulnerabilities_attrs[] = {
&dev_attr_meltdown.attr,
@@ -617,6 +624,7 @@ static struct attribute *cpu_root_vulnerabilities_attrs[] = {
&dev_attr_retbleed.attr,
&dev_attr_gather_data_sampling.attr,
&dev_attr_spec_rstack_overflow.attr,
+ &dev_attr_reg_file_data_sampling.attr,
NULL
};
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index 56ceba469..d238b47f7 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1052,7 +1052,7 @@ static int __init genpd_power_off_unused(void)
return 0;
}
-late_initcall(genpd_power_off_unused);
+late_initcall_sync(genpd_power_off_unused);
#ifdef CONFIG_PM_SLEEP