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author | Thomas Gleixner <tglx@linutronix.de> | 2017-11-23 16:29:05 +0100 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2017-11-23 16:29:05 +0100 |
commit | 866c9b94ef968445c52214b3748ecc52a8491bca (patch) | |
tree | 1fd073acb9be8e89e77b35c41e2964ac6feabee6 /arch/riscv/include/asm/tlbflush.h | |
parent | aea3706cfc4d952ed6d32b6d5845b5ecd99ed7f5 (diff) | |
parent | 841b86f3289dbe858daeceec36423d4ea286fac2 (diff) | |
download | linux-866c9b94ef968445c52214b3748ecc52a8491bca.tar.bz2 |
Merge tag 'for-linus-timers-conversion-final-v4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux into timers/urgent
Pull the last batch of manual timer conversions from Kees Cook:
- final batch of "non trivial" timer conversions (multi-tree dependencies,
things Coccinelle couldn't handle, etc).
- treewide conversions via Coccinelle, in 4 steps:
- DEFINE_TIMER() functions converted to struct timer_list * argument
- init_timer() -> setup_timer()
- setup_timer() -> timer_setup()
- setup_timer() -> timer_setup() (with a single embedded structure)
- deprecated timer API removals (init_timer(), setup_*timer())
- finalization of new API (remove global casts)
Diffstat (limited to 'arch/riscv/include/asm/tlbflush.h')
-rw-r--r-- | arch/riscv/include/asm/tlbflush.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/tlbflush.h b/arch/riscv/include/asm/tlbflush.h new file mode 100644 index 000000000000..5ee4ae370b5e --- /dev/null +++ b/arch/riscv/include/asm/tlbflush.h @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2009 Chen Liqin <liqin.chen@sunplusct.com> + * Copyright (C) 2012 Regents of the University of California + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, version 2. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _ASM_RISCV_TLBFLUSH_H +#define _ASM_RISCV_TLBFLUSH_H + +#ifdef CONFIG_MMU + +/* Flush entire local TLB */ +static inline void local_flush_tlb_all(void) +{ + __asm__ __volatile__ ("sfence.vma" : : : "memory"); +} + +/* Flush one page from local TLB */ +static inline void local_flush_tlb_page(unsigned long addr) +{ + __asm__ __volatile__ ("sfence.vma %0" : : "r" (addr) : "memory"); +} + +#ifndef CONFIG_SMP + +#define flush_tlb_all() local_flush_tlb_all() +#define flush_tlb_page(vma, addr) local_flush_tlb_page(addr) +#define flush_tlb_range(vma, start, end) local_flush_tlb_all() + +#else /* CONFIG_SMP */ + +#include <asm/sbi.h> + +#define flush_tlb_all() sbi_remote_sfence_vma(0, 0, -1) +#define flush_tlb_page(vma, addr) flush_tlb_range(vma, addr, 0) +#define flush_tlb_range(vma, start, end) \ + sbi_remote_sfence_vma(0, start, (end) - (start)) + +#endif /* CONFIG_SMP */ + +/* Flush the TLB entries of the specified mm context */ +static inline void flush_tlb_mm(struct mm_struct *mm) +{ + flush_tlb_all(); +} + +/* Flush a range of kernel pages */ +static inline void flush_tlb_kernel_range(unsigned long start, + unsigned long end) +{ + flush_tlb_all(); +} + +#endif /* CONFIG_MMU */ + +#endif /* _ASM_RISCV_TLBFLUSH_H */ |