From a72afd873089c697053e9daa85ff343b3140d2e7 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Wed, 27 Jan 2021 23:53:45 +0000 Subject: tlb: mmu_gather: Remove start/end arguments from tlb_gather_mmu() The 'start' and 'end' arguments to tlb_gather_mmu() are no longer needed now that there is a separate function for 'fullmm' flushing. Remove the unused arguments and update all callers. Suggested-by: Linus Torvalds Signed-off-by: Will Deacon Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Yu Zhao Acked-by: Peter Zijlstra (Intel) Acked-by: Linus Torvalds Link: https://lore.kernel.org/r/CAHk-=wjQWa14_4UpfDf=fiineNP+RH74kZeDMo_f1D35xNzq9w@mail.gmail.com --- mm/mmu_gather.c | 22 ++++++++-------------- 1 file changed, 8 insertions(+), 14 deletions(-) (limited to 'mm/mmu_gather.c') diff --git a/mm/mmu_gather.c b/mm/mmu_gather.c index 5f5e45d9eb50..0dc7149b0c61 100644 --- a/mm/mmu_gather.c +++ b/mm/mmu_gather.c @@ -253,21 +253,17 @@ void tlb_flush_mmu(struct mmu_gather *tlb) * tlb_gather_mmu - initialize an mmu_gather structure for page-table tear-down * @tlb: the mmu_gather structure to initialize * @mm: the mm_struct of the target address space - * @start: start of the region that will be removed from the page-table - * @end: end of the region that will be removed from the page-table + * @fullmm: @mm is without users and we're going to destroy the full address + * space (exit/execve) * * Called to initialize an (on-stack) mmu_gather structure for page-table - * tear-down from @mm. The @start and @end are set to 0 and -1 - * respectively when @mm is without users and we're going to destroy - * the full address space (exit/execve). + * tear-down from @mm. */ static void __tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, - unsigned long start, unsigned long end) + bool fullmm) { tlb->mm = mm; - - /* Is it from 0 to ~0? */ - tlb->fullmm = !(start | (end+1)); + tlb->fullmm = fullmm; #ifndef CONFIG_MMU_GATHER_NO_GATHER tlb->need_flush_all = 0; @@ -287,16 +283,14 @@ static void __tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, inc_tlb_flush_pending(tlb->mm); } -void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, - unsigned long start, unsigned long end) +void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm) { - WARN_ON(!(start | (end + 1))); /* Use _fullmm() instead */ - __tlb_gather_mmu(tlb, mm, start, end); + __tlb_gather_mmu(tlb, mm, false); } void tlb_gather_mmu_fullmm(struct mmu_gather *tlb, struct mm_struct *mm) { - __tlb_gather_mmu(tlb, mm, 0, -1); + __tlb_gather_mmu(tlb, mm, true); } /** -- cgit v1.2.3