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-rw-r--r--MAINTAINERS5
-rw-r--r--drivers/acpi/acpi_pnp.c14
-rw-r--r--drivers/acpi/processor_idle.c2
-rw-r--r--drivers/acpi/processor_perflib.c38
-rw-r--r--drivers/acpi/tables.c3
-rw-r--r--drivers/cpufreq/intel_pstate.c14
-rw-r--r--include/acpi/actbl1.h2
7 files changed, 52 insertions, 26 deletions
diff --git a/MAINTAINERS b/MAINTAINERS
index fb1471cb5ed3..cf86459b2860 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -361,6 +361,8 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
F: Documentation/ABI/testing/configfs-acpi
F: Documentation/ABI/testing/sysfs-bus-acpi
F: Documentation/firmware-guide/acpi/
+F: arch/x86/kernel/acpi/
+F: arch/x86/pci/acpi.c
F: drivers/acpi/
F: drivers/pci/*/*acpi*
F: drivers/pci/*acpi*
@@ -20105,7 +20107,8 @@ L: linux-pm@vger.kernel.org
S: Supported
B: https://bugzilla.kernel.org
F: Documentation/power/
-F: arch/x86/kernel/acpi/
+F: arch/x86/kernel/acpi/sleep*
+F: arch/x86/kernel/acpi/wakeup*
F: drivers/base/power/
F: include/linux/freezer.h
F: include/linux/pm.h
diff --git a/drivers/acpi/acpi_pnp.c b/drivers/acpi/acpi_pnp.c
index ffdcfcd4a10d..01abf26764b0 100644
--- a/drivers/acpi/acpi_pnp.c
+++ b/drivers/acpi/acpi_pnp.c
@@ -348,10 +348,22 @@ static bool acpi_pnp_match(const char *idstr, const struct acpi_device_id **matc
return false;
}
+/*
+ * If one of the device IDs below is present in the list of device IDs of a
+ * given ACPI device object, the PNP scan handler will not attach to that
+ * object, because there is a proper non-PNP driver in the kernel for the
+ * device represented by it.
+ */
+static const struct acpi_device_id acpi_nonpnp_device_ids[] = {
+ {"INTC1080"},
+ {"INTC1081"},
+ {""},
+};
+
static int acpi_pnp_attach(struct acpi_device *adev,
const struct acpi_device_id *id)
{
- return 1;
+ return !!acpi_match_device_ids(adev, acpi_nonpnp_device_ids);
}
static struct acpi_scan_handler acpi_pnp_handler = {
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 7bf882fcd64b..5a01c2a1567f 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -147,7 +147,7 @@ static void lapic_timer_check_state(int state, struct acpi_processor *pr,
static void __lapic_timer_propagate_broadcast(void *arg)
{
- struct acpi_processor *pr = (struct acpi_processor *) arg;
+ struct acpi_processor *pr = arg;
if (pr->power.timer_broadcast_on_state < INT_MAX)
tick_broadcast_enable();
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index 970f04a958cd..4265814c74f8 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -53,6 +53,8 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
{
acpi_status status = 0;
unsigned long long ppc = 0;
+ s32 qos_value;
+ int index;
int ret;
if (!pr)
@@ -72,17 +74,30 @@ static int acpi_processor_get_platform_limit(struct acpi_processor *pr)
}
}
+ index = ppc;
+
+ if (pr->performance_platform_limit == index ||
+ ppc >= pr->performance->state_count)
+ return 0;
+
pr_debug("CPU %d: _PPC is %d - frequency %s limited\n", pr->id,
- (int)ppc, ppc ? "" : "not");
+ index, index ? "is" : "is not");
- pr->performance_platform_limit = (int)ppc;
+ pr->performance_platform_limit = index;
- if (ppc >= pr->performance->state_count ||
- unlikely(!freq_qos_request_active(&pr->perflib_req)))
+ if (unlikely(!freq_qos_request_active(&pr->perflib_req)))
return 0;
- ret = freq_qos_update_request(&pr->perflib_req,
- pr->performance->states[ppc].core_frequency * 1000);
+ /*
+ * If _PPC returns 0, it means that all of the available states can be
+ * used ("no limit").
+ */
+ if (index == 0)
+ qos_value = FREQ_QOS_MAX_DEFAULT_VALUE;
+ else
+ qos_value = pr->performance->states[index].core_frequency * 1000;
+
+ ret = freq_qos_update_request(&pr->perflib_req, qos_value);
if (ret < 0) {
pr_warn("Failed to update perflib freq constraint: CPU%d (%d)\n",
pr->id, ret);
@@ -166,9 +181,16 @@ void acpi_processor_ppc_init(struct cpufreq_policy *policy)
if (!pr)
continue;
+ /*
+ * Reset performance_platform_limit in case there is a stale
+ * value in it, so as to make it match the "no limit" QoS value
+ * below.
+ */
+ pr->performance_platform_limit = 0;
+
ret = freq_qos_add_request(&policy->constraints,
- &pr->perflib_req,
- FREQ_QOS_MAX, INT_MAX);
+ &pr->perflib_req, FREQ_QOS_MAX,
+ FREQ_QOS_MAX_DEFAULT_VALUE);
if (ret < 0)
pr_err("Failed to add freq constraint for CPU%d (%d)\n",
cpu, ret);
diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index 5fbc32b802d0..7b4680da57d7 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -555,7 +555,8 @@ static const char table_sigs[][ACPI_NAMESEG_SIZE] __initconst = {
ACPI_SIG_WDDT, ACPI_SIG_WDRT, ACPI_SIG_DSDT, ACPI_SIG_FADT,
ACPI_SIG_PSDT, ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT,
ACPI_SIG_IORT, ACPI_SIG_NFIT, ACPI_SIG_HMAT, ACPI_SIG_PPTT,
- ACPI_SIG_NHLT, ACPI_SIG_AEST, ACPI_SIG_CEDT, ACPI_SIG_AGDI };
+ ACPI_SIG_NHLT, ACPI_SIG_AEST, ACPI_SIG_CEDT, ACPI_SIG_AGDI,
+ ACPI_SIG_NBFT };
#define ACPI_HEADER_SIZE sizeof(struct acpi_table_header)
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index fd73d6d2b808..cb4beec27555 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -452,20 +452,6 @@ static void intel_pstate_init_acpi_perf_limits(struct cpufreq_policy *policy)
(u32) cpu->acpi_perf_data.states[i].control);
}
- /*
- * The _PSS table doesn't contain whole turbo frequency range.
- * This just contains +1 MHZ above the max non turbo frequency,
- * with control value corresponding to max turbo ratio. But
- * when cpufreq set policy is called, it will call with this
- * max frequency, which will cause a reduced performance as
- * this driver uses real max turbo frequency as the max
- * frequency. So correct this frequency in _PSS table to
- * correct max turbo frequency based on the turbo state.
- * Also need to convert to MHz as _PSS freq is in MHz.
- */
- if (!global.turbo_disabled)
- cpu->acpi_perf_data.states[0].core_frequency =
- policy->cpuinfo.max_freq / 1000;
cpu->valid_pss_table = true;
pr_debug("_PPC limits will be enforced\n");
diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index e8297cefde09..cdedccccc4f3 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -50,6 +50,8 @@
#define ACPI_SIG_S3PT "S3PT" /* S3 Performance (sub)Table */
#define ACPI_SIG_PCCS "PCC" /* PCC Shared Memory Region */
+#define ACPI_SIG_NBFT "NBFT" /* NVMe Boot Firmware Table */
+
/* Reserved table signatures */
#define ACPI_SIG_MATR "MATR" /* Memory Address Translation Table */
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-27 23:10:37 +0300