From 9cc63f8bcd560c760d0b12e15bba8f81c86237cf Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Fri, 14 Aug 2026 15:43:51 -0700 Subject: Merge branches 'expcb.2026.07.24a', 'misc.2026.07.30a', 'rcu-tasks.2026.07.30a', 'srcu.2026.08.11a' and 'torture.2026.08.14a' into HEAD Changes: Make expedited grace periods expedite normal RCU callbacks Miscellaneous fixes: * Improve diagnostic output with character task states. * Mark accesses to inform KCSAN of concurrency design. * Move from kmalloc() to kmalloc_obj(). * Documentation updates. * Improve handling of RCU deferred quiescent states. * Clean up unused function arguments and structure fields. * Reduce show_rcu_gp_kthreads() stack space. Tasks RCU updates: * Clean up after SRCU re-implementation of Tasks Trace RCU. * Mark accesses to inform KCSAN of concurrency design. * Add ->lazy_timer status to diagnostic output. * Remove an unnecessary memory barrier. * Fix a data race, courtesy of KCSAN. * Documentation updates. * Convert cond_resched_tasks_rcu_qs() from macro to static inline function. SRCU updates: * Add Rust helpers for SRCU. * Avoid losing queued work at cleanup_srcu_struct() time. Torture-test updates: * Preparation work for immediate RCU priority deboosting. * Test RCU readers from real interrupt handlers (as opposed to softirq). * Simplify code through use of cpumask_next_wrap(). * Improve diagnostic output with character task states. * Add rcutorture.nwriters parameter to allow lightweight stall testing, and rcutorture.stall_only to make doing so easier. * Test an RCU Tasks Trace grace period implying an RCU grace period. * Make RCU Tasks Trace torturing track reader batches. * Fix a data race, courtesy of KCSAN. * Plug a shuffle_tmp_mask memory leak on kthread spawn failure. --- include/asm-generic/video.h | 136 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 136 insertions(+) create mode 100644 include/asm-generic/video.h (limited to 'include/asm-generic/video.h') diff --git a/include/asm-generic/video.h b/include/asm-generic/video.h new file mode 100644 index 000000000..b1da2309d --- /dev/null +++ b/include/asm-generic/video.h @@ -0,0 +1,136 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __ASM_GENERIC_VIDEO_H_ +#define __ASM_GENERIC_VIDEO_H_ + +/* + * Only include this header file from your architecture's . + */ + +#include +#include +#include +#include + +struct device; + +#ifndef pgprot_framebuffer +#define pgprot_framebuffer pgprot_framebuffer +static inline pgprot_t pgprot_framebuffer(pgprot_t prot, + unsigned long vm_start, unsigned long vm_end, + unsigned long offset) +{ + return pgprot_writecombine(prot); +} +#endif + +#ifndef video_is_primary_device +#define video_is_primary_device video_is_primary_device +static inline bool video_is_primary_device(struct device *dev) +{ + return false; +} +#endif + +/* + * I/O helpers for the framebuffer. Prefer these functions over their + * regular counterparts. The regular I/O functions provide in-order + * access and swap bytes to/from little-endian ordering. Neither is + * required for framebuffers. Instead, the helpers read and write + * raw framebuffer data. Independent operations can be reordered for + * improved performance. + */ + +#ifndef fb_readb +static inline u8 fb_readb(const volatile void __iomem *addr) +{ + return __raw_readb(addr); +} +#define fb_readb fb_readb +#endif + +#ifndef fb_readw +static inline u16 fb_readw(const volatile void __iomem *addr) +{ + return __raw_readw(addr); +} +#define fb_readw fb_readw +#endif + +#ifndef fb_readl +static inline u32 fb_readl(const volatile void __iomem *addr) +{ + return __raw_readl(addr); +} +#define fb_readl fb_readl +#endif + +#ifndef fb_readq +#if defined(__raw_readq) +static inline u64 fb_readq(const volatile void __iomem *addr) +{ + return __raw_readq(addr); +} +#define fb_readq fb_readq +#endif +#endif + +#ifndef fb_writeb +static inline void fb_writeb(u8 b, volatile void __iomem *addr) +{ + __raw_writeb(b, addr); +} +#define fb_writeb fb_writeb +#endif + +#ifndef fb_writew +static inline void fb_writew(u16 b, volatile void __iomem *addr) +{ + __raw_writew(b, addr); +} +#define fb_writew fb_writew +#endif + +#ifndef fb_writel +static inline void fb_writel(u32 b, volatile void __iomem *addr) +{ + __raw_writel(b, addr); +} +#define fb_writel fb_writel +#endif + +#ifndef fb_writeq +#if defined(__raw_writeq) +static inline void fb_writeq(u64 b, volatile void __iomem *addr) +{ + __raw_writeq(b, addr); +} +#define fb_writeq fb_writeq +#endif +#endif + +#ifndef fb_memcpy_fromio +static inline void fb_memcpy_fromio(void *to, const volatile void __iomem *from, size_t n) +{ + memcpy_fromio(to, from, n); +} +#define fb_memcpy_fromio fb_memcpy_fromio +#endif + +#ifndef fb_memcpy_toio +static inline void fb_memcpy_toio(volatile void __iomem *to, const void *from, size_t n) +{ + memcpy_toio(to, from, n); +} +#define fb_memcpy_toio fb_memcpy_toio +#endif + +#ifndef fb_memset +static inline void fb_memset_io(volatile void __iomem *addr, int c, size_t n) +{ + memset_io(addr, c, n); +} +#define fb_memset fb_memset_io +#endif + +#endif /* __ASM_GENERIC_VIDEO_H_ */ -- cgit v1.3.1