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| author | Nicholas Piggin <npiggin@gmail.com> | 2023-02-03 08:18:34 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-03-29 01:20:08 +0200 |
| commit | aa464ba9a1e444d5ef95bb63ee3b2ef26fc96ed7 (patch) | |
| tree | 8cc333c84d7f897b47e159a4fb9f387105eb03bf /kernel/exit.c | |
| parent | kthread: simplify kthread_use_mm refcounting (diff) | |
| download | linux-aa464ba9a1e444d5ef95bb63ee3b2ef26fc96ed7.tar.xz linux-aa464ba9a1e444d5ef95bb63ee3b2ef26fc96ed7.zip | |
lazy tlb: introduce lazy tlb mm refcount helper functions
Add explicit _lazy_tlb annotated functions for lazy tlb mm refcounting.
This makes the lazy tlb mm references more obvious, and allows the
refcounting scheme to be modified in later changes. There is no
functional change with this patch.
Link: https://lkml.kernel.org/r/20230203071837.1136453-3-npiggin@gmail.com
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nadav Amit <nadav.amit@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'kernel/exit.c')
| -rw-r--r-- | kernel/exit.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index f2afdb0add7c..86902cb5ab78 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -537,7 +537,7 @@ static void exit_mm(void) return; sync_mm_rss(mm); mmap_read_lock(mm); - mmgrab(mm); + mmgrab_lazy_tlb(mm); BUG_ON(mm != current->active_mm); /* more a memory barrier than a real lock */ task_lock(current); |