• A
    x86/mm: Change the leave_mm() condition for local TLB flushes · 59f537c1
    Andy Lutomirski 提交于
    On a remote TLB flush, we leave_mm() if we're TLBSTATE_LAZY.  For a
    local flush_tlb_mm_range(), we leave_mm() if !current->mm.  These
    are approximately the same condition -- the scheduler sets lazy TLB
    mode when switching to a thread with no mm.
    
    I'm about to merge the local and remote flush code, but for ease of
    verifying and bisecting the patch, I want the local and remote flush
    behavior to match first.  This patch changes the local code to match
    the remote code.
    Signed-off-by: NAndy Lutomirski <luto@kernel.org>
    Acked-by: NRik van Riel <riel@redhat.com>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Arjan van de Ven <arjan@linux.intel.com>
    Cc: Borislav Petkov <bpetkov@suse.de>
    Cc: Dave Hansen <dave.hansen@intel.com>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Mel Gorman <mgorman@suse.de>
    Cc: Michal Hocko <mhocko@suse.com>
    Cc: Nadav Amit <nadav.amit@gmail.com>
    Cc: Nadav Amit <namit@vmware.com>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Rik van Riel <riel@redhat.com>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Cc: linux-mm@kvack.org
    Signed-off-by: NIngo Molnar <mingo@kernel.org>
    59f537c1
tlb.c 12.4 KB