AuxXxilium/linux_dsm_epyc7002
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Merge branches 'acpi-init', 'acpi-osl', 'acpi-bus', 'acpi-tables' and 'acpi-misc'

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* acpi-init:
  ACPI: probe ECDT before loading AML tables regardless of module-level code flag

* acpi-osl:
  ACPI / OSL: Use 'jiffies' as the time bassis for acpi_os_get_timer()

* acpi-bus:
  ACPI / glue: Split dev_is_platform() out of module for wide use

* acpi-tables:
  ACPI/PPTT: Handle architecturally unknown cache types
  drivers: base: cacheinfo: Do not populate sysfs for unknown cache types

* acpi-misc:
  ACPI: remove redundant 'default n' from Kconfig
  ACPI: custom_method: remove meaningless null check before debugfs_remove()
This commit is contained in:
Rafael J. Wysocki 2018-10-18 12:37:11 +02:00
commit bd371e088b
8 changed files with 43 additions and 63 deletions
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6
drivers/acpi/Kconfig
View File

@ -138,7 +138,6 @@ config ACPI_REV_OVERRIDE_POSSIBLE
config ACPI_EC_DEBUGFS
tristate "EC read/write access through /sys/kernel/debug/ec"
default n
help
Say N to disable Embedded Controller /sys/kernel/debug interface
@ -283,7 +282,6 @@ config ACPI_PROCESSOR
config ACPI_IPMI
tristate "IPMI"
depends on IPMI_HANDLER
default n
help
This driver enables the ACPI to access the BMC controller. And it
uses the IPMI request/response message to communicate with BMC
@ -361,7 +359,6 @@ config ACPI_TABLE_UPGRADE
config ACPI_DEBUG
bool "Debug Statements"
default n
help
The ACPI subsystem can produce debug output. Saying Y enables this
output and increases the kernel size by around 50K.
@ -374,7 +371,6 @@ config ACPI_DEBUG
config ACPI_PCI_SLOT
bool "PCI slot detection driver"
depends on SYSFS
default n
help
This driver creates entries in /sys/bus/pci/slots/ for all PCI
slots in the system. This can help correlate PCI bus addresses,
@ -436,7 +432,6 @@ config ACPI_HED
config ACPI_CUSTOM_METHOD
tristate "Allow ACPI methods to be inserted/replaced at run time"
depends on DEBUG_FS
default n
help
This debug facility allows ACPI AML methods to be inserted and/or
replaced without rebooting the system. For details refer to:
@ -481,7 +476,6 @@ config ACPI_EXTLOG
tristate "Extended Error Log support"
depends on X86_MCE && X86_LOCAL_APIC && EDAC
select UEFI_CPER
default n
help
Certain usages such as Predictive Failure Analysis (PFA) require
more information about the error than what can be described in

44
drivers/acpi/bus.c
View File

@ -1054,15 +1054,17 @@ void __init acpi_early_init(void)
goto error0;
}
if (!acpi_gbl_execute_tables_as_methods &&
acpi_gbl_group_module_level_code) {
status = acpi_load_tables();
if (ACPI_FAILURE(status)) {
printk(KERN_ERR PREFIX
"Unable to load the System Description Tables\n");
goto error0;
}
}
/*
* ACPI 2.0 requires the EC driver to be loaded and work before
* the EC device is found in the namespace (i.e. before
* acpi_load_tables() is called).
*
* This is accomplished by looking for the ECDT table, and getting
* the EC parameters out of that.
*
* Ignore the result. Not having an ECDT is not fatal.
*/
status = acpi_ec_ecdt_probe();
#ifdef CONFIG_X86
if (!acpi_ioapic) {
@ -1133,25 +1135,11 @@ static int __init acpi_bus_init(void)
acpi_os_initialize1();
/*
* ACPI 2.0 requires the EC driver to be loaded and work before
* the EC device is found in the namespace (i.e. before
* acpi_load_tables() is called).
*
* This is accomplished by looking for the ECDT table, and getting
* the EC parameters out of that.
*/
status = acpi_ec_ecdt_probe();
/* Ignore result. Not having an ECDT is not fatal. */
if (acpi_gbl_execute_tables_as_methods ||
!acpi_gbl_group_module_level_code) {
status = acpi_load_tables();
if (ACPI_FAILURE(status)) {
printk(KERN_ERR PREFIX
"Unable to load the System Description Tables\n");
goto error1;
}
status = acpi_load_tables();
if (ACPI_FAILURE(status)) {
printk(KERN_ERR PREFIX
"Unable to load the System Description Tables\n");
goto error1;
}
status = acpi_enable_subsystem(ACPI_NO_ACPI_ENABLE);

3
drivers/acpi/custom_method.c
View File

@ -92,8 +92,7 @@ static int __init acpi_custom_method_init(void)
static void __exit acpi_custom_method_exit(void)
{
if (cm_dentry)
debugfs_remove(cm_dentry);
debugfs_remove(cm_dentry);
}
module_init(acpi_custom_method_init);

2
drivers/acpi/glue.c
View File

@ -320,7 +320,7 @@ static int acpi_platform_notify(struct device *dev)
if (!adev)
goto out;
if (dev->bus == &platform_bus_type)
if (dev_is_platform(dev))
acpi_configure_pmsi_domain(dev);
if (type && type->setup)

15
drivers/acpi/osl.c
View File

@ -617,15 +617,18 @@ void acpi_os_stall(u32 us)
}
/*
* Support ACPI 3.0 AML Timer operand
* Returns 64-bit free-running, monotonically increasing timer
* with 100ns granularity
* Support ACPI 3.0 AML Timer operand. Returns a 64-bit free-running,
* monotonically increasing timer with 100ns granularity. Do not use
* ktime_get() to implement this function because this function may get
* called after timekeeping has been suspended. Note: calling this function
* after timekeeping has been suspended may lead to unexpected results
* because when timekeeping is suspended the jiffies counter is not
* incremented. See also timekeeping_suspend().
*/
u64 acpi_os_get_timer(void)
{
u64 time_ns = ktime_to_ns(ktime_get());
do_div(time_ns, 100);
return time_ns;
return (get_jiffies_64() - INITIAL_JIFFIES) *
(ACPI_100NSEC_PER_SEC / HZ);
}
acpi_status acpi_os_read_port(acpi_io_address port, u32 * value, u32 width)

33
drivers/acpi/pptt.c
View File

@ -338,9 +338,6 @@ static struct acpi_pptt_cache *acpi_find_cache_node(struct acpi_table_header *ta
return found;
}
/* total number of attributes checked by the properties code */
#define PPTT_CHECKED_ATTRIBUTES 4
/**
* update_cache_properties() - Update cacheinfo for the given processor
* @this_leaf: Kernel cache info structure being updated
@ -357,25 +354,15 @@ static void update_cache_properties(struct cacheinfo *this_leaf,
struct acpi_pptt_cache *found_cache,
struct acpi_pptt_processor *cpu_node)
{
int valid_flags = 0;
this_leaf->fw_token = cpu_node;
if (found_cache->flags & ACPI_PPTT_SIZE_PROPERTY_VALID) {
if (found_cache->flags & ACPI_PPTT_SIZE_PROPERTY_VALID)
this_leaf->size = found_cache->size;
valid_flags++;
}
if (found_cache->flags & ACPI_PPTT_LINE_SIZE_VALID) {
if (found_cache->flags & ACPI_PPTT_LINE_SIZE_VALID)
this_leaf->coherency_line_size = found_cache->line_size;
valid_flags++;
}
if (found_cache->flags & ACPI_PPTT_NUMBER_OF_SETS_VALID) {
if (found_cache->flags & ACPI_PPTT_NUMBER_OF_SETS_VALID)
this_leaf->number_of_sets = found_cache->number_of_sets;
valid_flags++;
}
if (found_cache->flags & ACPI_PPTT_ASSOCIATIVITY_VALID) {
if (found_cache->flags & ACPI_PPTT_ASSOCIATIVITY_VALID)
this_leaf->ways_of_associativity = found_cache->associativity;
valid_flags++;
}
if (found_cache->flags & ACPI_PPTT_WRITE_POLICY_VALID) {
switch (found_cache->attributes & ACPI_PPTT_MASK_WRITE_POLICY) {
case ACPI_PPTT_CACHE_POLICY_WT:
@ -402,11 +389,17 @@ static void update_cache_properties(struct cacheinfo *this_leaf,
}
}
/*
* If the above flags are valid, and the cache type is NOCACHE
* update the cache type as well.
* If cache type is NOCACHE, then the cache hasn't been specified
* via other mechanisms. Update the type if a cache type has been
* provided.
*
* Note, we assume such caches are unified based on conventional system
* design and known examples. Significant work is required elsewhere to
* fully support data/instruction only type caches which are only
* specified in PPTT.
*/
if (this_leaf->type == CACHE_TYPE_NOCACHE &&
valid_flags == PPTT_CHECKED_ATTRIBUTES)
found_cache->flags & ACPI_PPTT_CACHE_TYPE_VALID)
this_leaf->type = CACHE_TYPE_UNIFIED;
}

2
drivers/base/cacheinfo.c
View File

@ -615,6 +615,8 @@ static int cache_add_dev(unsigned int cpu)
this_leaf = this_cpu_ci->info_list + i;
if (this_leaf->disable_sysfs)
continue;
if (this_leaf->type == CACHE_TYPE_NOCACHE)
break;
cache_groups = cache_get_attribute_groups(this_leaf);
ci_dev = cpu_device_create(parent, this_leaf, cache_groups,
"index%1u", i);

1
include/linux/platform_device.h
View File

@ -40,6 +40,7 @@ struct platform_device {
#define platform_get_device_id(pdev) ((pdev)->id_entry)
#define dev_is_platform(dev) ((dev)->bus == &platform_bus_type)
#define to_platform_device(x) container_of((x), struct platform_device, dev)
extern int platform_device_register(struct platform_device *);