mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 12:45:16 +07:00
1b5ba35078
Arm TC2 fails cpu hotplug stress test.
This issue was tracked down to a missing copy of the new affinity
cpumask for the vexpress-spc interrupt into struct
irq_common_data.affinity when the interrupt is migrated in
migrate_one_irq().
Fix it by replacing the arm specific hotplug cpu migration with the
generic irq code.
This is the counterpart implementation to commit 217d453d47 ("arm64:
fix a migrating irq bug when hotplug cpu").
Tested with cpu hotplug stress test on Arm TC2 (multi_v7_defconfig plus
CONFIG_ARM_BIG_LITTLE_CPUFREQ=y and CONFIG_ARM_VEXPRESS_SPC_CPUFREQ=y).
The vexpress-spc interrupt (irq=22) on this board is affine to CPU0.
Its affinity cpumask now changes correctly e.g. from 0 to 1-4 when
CPU0 is hotplugged out.
Suggested-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
48 lines
859 B
C
48 lines
859 B
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __ASM_ARM_IRQ_H
|
|
#define __ASM_ARM_IRQ_H
|
|
|
|
#define NR_IRQS_LEGACY 16
|
|
|
|
#ifndef CONFIG_SPARSE_IRQ
|
|
#include <mach/irqs.h>
|
|
#else
|
|
#define NR_IRQS NR_IRQS_LEGACY
|
|
#endif
|
|
|
|
#ifndef irq_canonicalize
|
|
#define irq_canonicalize(i) (i)
|
|
#endif
|
|
|
|
/*
|
|
* Use this value to indicate lack of interrupt
|
|
* capability
|
|
*/
|
|
#ifndef NO_IRQ
|
|
#define NO_IRQ ((unsigned int)(-1))
|
|
#endif
|
|
|
|
#ifndef __ASSEMBLY__
|
|
struct irqaction;
|
|
struct pt_regs;
|
|
|
|
extern void asm_do_IRQ(unsigned int, struct pt_regs *);
|
|
void handle_IRQ(unsigned int, struct pt_regs *);
|
|
void init_IRQ(void);
|
|
|
|
#ifdef CONFIG_SMP
|
|
extern void arch_trigger_cpumask_backtrace(const cpumask_t *mask,
|
|
bool exclude_self);
|
|
#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
|
|
#endif
|
|
|
|
static inline int nr_legacy_irqs(void)
|
|
{
|
|
return NR_IRQS_LEGACY;
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|