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x86/mpparse: Remove the physid_t bitmap wrapper

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physid_t is a wrapper around bitmap. Just remove the onion layer and use
bitmap functionality directly.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Link: https://lore.kernel.org/r/20240212154639.994904510@linutronix.de
This commit is contained in:
Thomas Gleixner 2024-02-13 22:05:17 +01:00
parent de6aec2417
commit 350b5e2730
6 changed files with 30 additions and 58 deletions
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32
arch/x86/include/asm/mpspec.h
View File

@ -2,6 +2,7 @@
#ifndef _ASM_X86_MPSPEC_H
#define _ASM_X86_MPSPEC_H
#include <linux/types.h>
#include <asm/mpspec_def.h>
#include <asm/x86_init.h>
@ -62,32 +63,17 @@ static inline void e820__memblock_alloc_reserved_mpc_new(void) { }
int generic_processor_info(int apicid);
#define PHYSID_ARRAY_SIZE BITS_TO_LONGS(MAX_LOCAL_APIC)
extern DECLARE_BITMAP(phys_cpu_present_map, MAX_LOCAL_APIC);
struct physid_mask {
unsigned long mask[PHYSID_ARRAY_SIZE];
};
typedef struct physid_mask physid_mask_t;
#define physid_set(physid, map) set_bit(physid, (map).mask)
#define physid_isset(physid, map) test_bit(physid, (map).mask)
#define physids_clear(map) \
bitmap_zero((map).mask, MAX_LOCAL_APIC)
#define physids_empty(map) \
bitmap_empty((map).mask, MAX_LOCAL_APIC)
static inline void physid_set_mask_of_physid(int physid, physid_mask_t *map)
static inline void reset_phys_cpu_present_map(u32 apicid)
{
physids_clear(*map);
physid_set(physid, *map);
bitmap_zero(phys_cpu_present_map, MAX_LOCAL_APIC);
set_bit(apicid, phys_cpu_present_map);
}
#define PHYSID_MASK_ALL { {[0 ... PHYSID_ARRAY_SIZE-1] = ~0UL} }
#define PHYSID_MASK_NONE { {[0 ... PHYSID_ARRAY_SIZE-1] = 0UL} }
extern physid_mask_t phys_cpu_present_map;
static inline void copy_phys_cpu_present_map(unsigned long *dst)
{
bitmap_copy(dst, phys_cpu_present_map, MAX_LOCAL_APIC);
}
#endif /* _ASM_X86_MPSPEC_H */

11
arch/x86/kernel/apic/apic.c
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@ -19,6 +19,7 @@
#include <linux/kernel_stat.h>
#include <linux/mc146818rtc.h>
#include <linux/acpi_pmtmr.h>
#include <linux/bitmap.h>
#include <linux/clockchips.h>
#include <linux/interrupt.h>
#include <linux/memblock.h>
@ -77,10 +78,8 @@ EXPORT_SYMBOL_GPL(boot_cpu_physical_apicid);
u8 boot_cpu_apic_version __ro_after_init;
/*
* Bitmask of physically existing CPUs:
*/
physid_mask_t phys_cpu_present_map;
/* Bitmap of physically present CPUs. */
DECLARE_BITMAP(phys_cpu_present_map, MAX_LOCAL_APIC);
/*
* Processor to be disabled specified by kernel parameter
@ -2387,7 +2386,7 @@ static void cpu_update_apic(int cpu, u32 apicid)
early_per_cpu(x86_cpu_to_apicid, cpu) = apicid;
#endif
set_cpu_possible(cpu, true);
physid_set(apicid, phys_cpu_present_map);
set_bit(apicid, phys_cpu_present_map);
set_cpu_present(cpu, true);
num_processors++;
@ -2489,7 +2488,7 @@ static void __init apic_bsp_up_setup(void)
#ifdef CONFIG_X86_64
apic_write(APIC_ID, apic->set_apic_id(boot_cpu_physical_apicid));
#endif
physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);
reset_phys_cpu_present_map(boot_cpu_physical_apicid);
}
/**

12
arch/x86/kernel/apic/apic_common.c
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@ -18,16 +18,6 @@ u32 apic_flat_calc_apicid(unsigned int cpu)
return 1U << cpu;
}
bool default_check_apicid_used(physid_mask_t *map, u32 apicid)
{
return physid_isset(apicid, *map);
}
void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap)
{
*retmap = *phys_map;
}
u32 default_cpu_present_to_apicid(int mps_cpu)
{
if (mps_cpu < nr_cpu_ids && cpu_present(mps_cpu))
@ -39,7 +29,7 @@ EXPORT_SYMBOL_GPL(default_cpu_present_to_apicid);
bool default_apic_id_registered(void)
{
return physid_isset(read_apic_id(), phys_cpu_present_map);
return test_bit(read_apic_id(), phys_cpu_present_map);
}
/*

24
arch/x86/kernel/apic/io_apic.c
View File

@ -1460,7 +1460,7 @@ void restore_boot_irq_mode(void)
*/
static void __init setup_ioapic_ids_from_mpc_nocheck(void)
{
physid_mask_t phys_id_present_map;
DECLARE_BITMAP(phys_id_present_map, MAX_LOCAL_APIC);
const u32 broadcast_id = 0xF;
union IO_APIC_reg_00 reg_00;
unsigned char old_id;
@ -1471,7 +1471,7 @@ static void __init setup_ioapic_ids_from_mpc_nocheck(void)
* This is broken; anything with a real cpu count has to
* circumvent this idiocy regardless.
*/
phys_id_present_map = phys_cpu_present_map;
copy_phys_cpu_present_map(phys_id_present_map);
/*
* Set the IOAPIC ID to the value stored in the MPC table.
@ -1496,21 +1496,21 @@ static void __init setup_ioapic_ids_from_mpc_nocheck(void)
* system must have a unique ID or we get lots of nice
* 'stuck on smp_invalidate_needed IPI wait' messages.
*/
if (physid_isset(mpc_ioapic_id(ioapic_idx), phys_id_present_map)) {
if (test_bit(mpc_ioapic_id(ioapic_idx), phys_id_present_map)) {
pr_err(FW_BUG "IO-APIC#%d ID %d is already used!...\n",
ioapic_idx, mpc_ioapic_id(ioapic_idx));
for (i = 0; i < broadcast_id; i++)
if (!physid_isset(i, phys_id_present_map))
if (!test_bit(i, phys_id_present_map))
break;
if (i >= broadcast_id)
panic("Max APIC ID exceeded!\n");
pr_err("... fixing up to %d. (tell your hw vendor)\n", i);
physid_set(i, phys_id_present_map);
set_bit(i, phys_id_present_map);
ioapics[ioapic_idx].mp_config.apicid = i;
} else {
apic_printk(APIC_VERBOSE, "Setting %d in the phys_id_present_map\n",
mpc_ioapic_id(ioapic_idx));
physid_set(mpc_ioapic_id(ioapic_idx), phys_id_present_map);
set_bit(mpc_ioapic_id(ioapic_idx), phys_id_present_map);
}
/*
@ -2491,15 +2491,15 @@ unsigned int arch_dynirq_lower_bound(unsigned int from)
#ifdef CONFIG_X86_32
static int io_apic_get_unique_id(int ioapic, int apic_id)
{
static physid_mask_t apic_id_map = PHYSID_MASK_NONE;
static DECLARE_BITMAP(apic_id_map, MAX_LOCAL_APIC);
const u32 broadcast_id = 0xF;
union IO_APIC_reg_00 reg_00;
unsigned long flags;
int i = 0;
/* Initialize the ID map */
if (physids_empty(apic_id_map))
apic_id_map = phys_cpu_present_map;
if (bitmap_empty(apic_id_map, MAX_LOCAL_APIC))
copy_phys_cpu_present_map(apic_id_map);
raw_spin_lock_irqsave(&ioapic_lock, flags);
reg_00.raw = io_apic_read(ioapic, 0);
@ -2512,9 +2512,9 @@ static int io_apic_get_unique_id(int ioapic, int apic_id)
}
/* Every APIC in a system must have a unique ID */
if (physid_isset(apic_id, apic_id_map)) {
if (test_bit(apic_id, apic_id_map)) {
for (i = 0; i < broadcast_id; i++) {
if (!physid_isset(i, apic_id_map))
if (!test_bit(i, apic_id_map))
break;
}
@ -2525,7 +2525,7 @@ static int io_apic_get_unique_id(int ioapic, int apic_id)
apic_id = i;
}
physid_set(apic_id, apic_id_map);
set_bit(apic_id, apic_id_map);
if (reg_00.bits.ID != apic_id) {
reg_00.bits.ID = apic_id;

1
arch/x86/kernel/apic/local.h
View File

@ -63,7 +63,6 @@ void default_send_IPI_all(int vector);
void default_send_IPI_self(int vector);
bool default_apic_id_registered(void);
bool default_check_apicid_used(physid_mask_t *map, u32 apicid);
#ifdef CONFIG_X86_32
void default_send_IPI_mask_sequence_logical(const struct cpumask *mask, int vector);

8
arch/x86/kernel/smpboot.c
View File

@ -1072,7 +1072,7 @@ int native_kick_ap(unsigned int cpu, struct task_struct *tidle)
pr_debug("++++++++++++++++++++=_---CPU UP %u\n", cpu);
if (apicid == BAD_APICID || !physid_isset(apicid, phys_cpu_present_map) ||
if (apicid == BAD_APICID || !test_bit(apicid, phys_cpu_present_map) ||
!apic_id_valid(apicid)) {
pr_err("%s: bad cpu %d\n", __func__, cpu);
return -EINVAL;
@ -1147,10 +1147,8 @@ static __init void disable_smp(void)
init_cpu_present(cpumask_of(0));
init_cpu_possible(cpumask_of(0));
if (smp_found_config)
physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);
else
physid_set_mask_of_physid(0, &phys_cpu_present_map);
reset_phys_cpu_present_map(smp_found_config ? boot_cpu_physical_apicid : 0);
cpumask_set_cpu(0, topology_sibling_cpumask(0));
cpumask_set_cpu(0, topology_core_cpumask(0));
cpumask_set_cpu(0, topology_die_cpumask(0));