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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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df9ee29270
Fix the IRQ flag handling naming. In linux/irqflags.h under one configuration, it maps: local_irq_enable() -> raw_local_irq_enable() local_irq_disable() -> raw_local_irq_disable() local_irq_save() -> raw_local_irq_save() ... and under the other configuration, it maps: raw_local_irq_enable() -> local_irq_enable() raw_local_irq_disable() -> local_irq_disable() raw_local_irq_save() -> local_irq_save() ... This is quite confusing. There should be one set of names expected of the arch, and this should be wrapped to give another set of names that are expected by users of this facility. Change this to have the arch provide: flags = arch_local_save_flags() flags = arch_local_irq_save() arch_local_irq_restore(flags) arch_local_irq_disable() arch_local_irq_enable() arch_irqs_disabled_flags(flags) arch_irqs_disabled() arch_safe_halt() Then linux/irqflags.h wraps these to provide: raw_local_save_flags(flags) raw_local_irq_save(flags) raw_local_irq_restore(flags) raw_local_irq_disable() raw_local_irq_enable() raw_irqs_disabled_flags(flags) raw_irqs_disabled() raw_safe_halt() with type checking on the flags 'arguments', and then wraps those to provide: local_save_flags(flags) local_irq_save(flags) local_irq_restore(flags) local_irq_disable() local_irq_enable() irqs_disabled_flags(flags) irqs_disabled() safe_halt() with tracing included if enabled. The arch functions can now all be inline functions rather than some of them having to be macros. Signed-off-by: David Howells <dhowells@redhat.com> [X86, FRV, MN10300] Signed-off-by: Chris Metcalf <cmetcalf@tilera.com> [Tile] Signed-off-by: Michal Simek <monstr@monstr.eu> [Microblaze] Tested-by: Catalin Marinas <catalin.marinas@arm.com> [ARM] Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> [AVR] Acked-by: Tony Luck <tony.luck@intel.com> [IA-64] Acked-by: Hirokazu Takata <takata@linux-m32r.org> [M32R] Acked-by: Greg Ungerer <gerg@uclinux.org> [M68K/M68KNOMMU] Acked-by: Ralf Baechle <ralf@linux-mips.org> [MIPS] Acked-by: Kyle McMartin <kyle@mcmartin.ca> [PA-RISC] Acked-by: Paul Mackerras <paulus@samba.org> [PowerPC] Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> [S390] Acked-by: Chen Liqin <liqin.chen@sunplusct.com> [Score] Acked-by: Matt Fleming <matt@console-pimps.org> [SH] Acked-by: David S. Miller <davem@davemloft.net> [Sparc] Acked-by: Chris Zankel <chris@zankel.net> [Xtensa] Reviewed-by: Richard Henderson <rth@twiddle.net> [Alpha] Reviewed-by: Yoshinori Sato <ysato@users.sourceforge.jp> [H8300] Cc: starvik@axis.com [CRIS] Cc: jesper.nilsson@axis.com [CRIS] Cc: linux-cris-kernel@axis.com
73 lines
1.5 KiB
C
73 lines
1.5 KiB
C
/*
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* Copyright IBM Corp. 2006,2010
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* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
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*/
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#ifndef __ASM_IRQFLAGS_H
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#define __ASM_IRQFLAGS_H
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#include <linux/types.h>
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/* store then OR system mask. */
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#define __arch_local_irq_stosm(__or) \
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({ \
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unsigned long __mask; \
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asm volatile( \
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" stosm %0,%1" \
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: "=Q" (__mask) : "i" (__or) : "memory"); \
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__mask; \
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})
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/* store then AND system mask. */
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#define __arch_local_irq_stnsm(__and) \
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({ \
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unsigned long __mask; \
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asm volatile( \
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" stnsm %0,%1" \
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: "=Q" (__mask) : "i" (__and) : "memory"); \
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__mask; \
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})
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/* set system mask. */
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static inline void __arch_local_irq_ssm(unsigned long flags)
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{
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asm volatile("ssm %0" : : "Q" (flags) : "memory");
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}
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static inline unsigned long arch_local_save_flags(void)
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{
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return __arch_local_irq_stosm(0x00);
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}
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static inline unsigned long arch_local_irq_save(void)
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{
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return __arch_local_irq_stnsm(0xfc);
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}
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static inline void arch_local_irq_disable(void)
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{
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arch_local_irq_save();
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}
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static inline void arch_local_irq_enable(void)
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{
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__arch_local_irq_stosm(0x03);
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}
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static inline void arch_local_irq_restore(unsigned long flags)
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{
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__arch_local_irq_ssm(flags);
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}
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static inline bool arch_irqs_disabled_flags(unsigned long flags)
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{
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return !(flags & (3UL << (BITS_PER_LONG - 8)));
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}
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static inline bool arch_irqs_disabled(void)
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{
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return arch_irqs_disabled_flags(arch_local_save_flags());
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}
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#endif /* __ASM_IRQFLAGS_H */
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