Commit 095928ae authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

intel_idle: Annotate initialization code and data structures 



Annotate the functions that are only used at the initialization time
with __init and the data structures used by them with __initdata or
__initconst.

No intentional functional impact.

Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 0755a9bd

drivers/idle/intel_idle.c

+14 −13
Original line number Diff line number Diff line
@@ -1148,7 +1148,7 @@ static const struct x86_cpu_id intel_mwait_ids[] __initconst = { 
	{}

};



static bool intel_idle_max_cstate_reached(int cstate)

static bool __init intel_idle_max_cstate_reached(int cstate)

{

	if (cstate + 1 > max_cstate) {

		pr_info("max_cstate %d reached\n", max_cstate);
@@ -1164,7 +1164,7 @@ static bool no_acpi __read_mostly; 
module_param(no_acpi, bool, 0444);

MODULE_PARM_DESC(no_acpi, "Do not use ACPI _CST for building the idle states list");



static struct acpi_processor_power acpi_state_table;

static struct acpi_processor_power acpi_state_table __initdata;



/**

 * intel_idle_cst_usable - Check if the _CST information can be used.
@@ -1172,7 +1172,7 @@ static struct acpi_processor_power acpi_state_table; 
 * Check if all of the C-states listed by _CST in the max_cstate range are

 * ACPI_CSTATE_FFH, which means that they should be entered via MWAIT.

 */

static bool intel_idle_cst_usable(void)

static bool __init intel_idle_cst_usable(void)

{

	int cstate, limit;
@@ -1189,7 +1189,7 @@ static bool intel_idle_cst_usable(void) 
	return true;

}



static bool intel_idle_acpi_cst_extract(void)

static bool __init intel_idle_acpi_cst_extract(void)

{

	unsigned int cpu;
@@ -1224,7 +1224,7 @@ static bool intel_idle_acpi_cst_extract(void) 
	return false;

}



static void intel_idle_init_cstates_acpi(struct cpuidle_driver *drv)

static void __init intel_idle_init_cstates_acpi(struct cpuidle_driver *drv)

{

	int cstate, limit = min_t(int, CPUIDLE_STATE_MAX, acpi_state_table.count);
@@ -1268,7 +1268,7 @@ static void intel_idle_init_cstates_acpi(struct cpuidle_driver *drv) 
	}

}



static bool intel_idle_off_by_default(u32 mwait_hint)

static bool __init intel_idle_off_by_default(u32 mwait_hint)

{

	int cstate, limit;
@@ -1302,7 +1302,7 @@ static inline bool intel_idle_off_by_default(u32 mwait_hint) { return false; } 
 * Tune IVT multi-socket targets

 * Assumption: num_sockets == (max_package_num + 1)

 */

static void ivt_idle_state_table_update(void)

static void __init ivt_idle_state_table_update(void)

{

	/* IVT uses a different table for 1-2, 3-4, and > 4 sockets */

	int cpu, package_num, num_sockets = 1;
@@ -1329,10 +1329,11 @@ static void ivt_idle_state_table_update(void) 
 * Translate IRTL (Interrupt Response Time Limit) MSR to usec

 */



static unsigned int irtl_ns_units[] = {

	1, 32, 1024, 32768, 1048576, 33554432, 0, 0 };

static const unsigned int irtl_ns_units[] __initconst = {

	1, 32, 1024, 32768, 1048576, 33554432, 0, 0

};



static unsigned long long irtl_2_usec(unsigned long long irtl)

static unsigned long long __init irtl_2_usec(unsigned long long irtl)

{

	unsigned long long ns;
@@ -1349,7 +1350,7 @@ static unsigned long long irtl_2_usec(unsigned long long irtl) 
 * On BXT, we trust the IRTL to show the definitive maximum latency

 * We use the same value for target_residency.

 */

static void bxt_idle_state_table_update(void)

static void __init bxt_idle_state_table_update(void)

{

	unsigned long long msr;

	unsigned int usec;
@@ -1396,7 +1397,7 @@ static void bxt_idle_state_table_update(void) 
 * On SKL-H (model 0x5e) disable C8 and C9 if:

 * C10 is enabled and SGX disabled

 */

static void sklh_idle_state_table_update(void)

static void __init sklh_idle_state_table_update(void)

{

	unsigned long long msr;

	unsigned int eax, ebx, ecx, edx;
@@ -1433,7 +1434,7 @@ static void sklh_idle_state_table_update(void) 
	skl_cstates[6].flags |= CPUIDLE_FLAG_UNUSABLE;	/* C9-SKL */

}



static void intel_idle_init_cstates_icpu(struct cpuidle_driver *drv)

static void __init intel_idle_init_cstates_icpu(struct cpuidle_driver *drv)

{

	int cstate;