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authorPalmer Dabbelt <palmer@sifive.com>2018-10-02 12:15:02 -0700
committerPalmer Dabbelt <palmer@sifive.com>2018-10-22 17:03:36 -0700
commit46373cb442c56d2f8a4c8b3f777c89d20546c9d5 (patch)
tree54268e1abc962ff72a2c835cde3df095587b3d46 /arch
parent177fae4515889e2407810c5167a5227da8b37cce (diff)
RISC-V: Use mmgrab()
commit f1f1007644ff ("mm: add new mmgrab() helper") added a helper that we missed out on. Signed-off-by: Palmer Dabbelt <palmer@sifive.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/riscv/kernel/smpboot.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/riscv/kernel/smpboot.c b/arch/riscv/kernel/smpboot.c
index 4a232600cedb..17e748312afd 100644
--- a/arch/riscv/kernel/smpboot.c
+++ b/arch/riscv/kernel/smpboot.c
@@ -30,6 +30,7 @@
#include <linux/irq.h>
#include <linux/of.h>
#include <linux/sched/task_stack.h>
+#include <linux/sched/mm.h>
#include <asm/irq.h>
#include <asm/mmu_context.h>
#include <asm/tlbflush.h>
@@ -101,7 +102,7 @@ asmlinkage void __init smp_callin(void)
struct mm_struct *mm = &init_mm;
/* All kernel threads share the same mm context. */
- atomic_inc(&mm->mm_count);
+ mmgrab(mm);
current->active_mm = mm;
trap_init();