From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt Date: Tue, 07 Aug 2007 17:19:46 +1000 Subject: [RFC/PATCH 1/12] remove frv usage of flush_tlb_pgtables() In-Reply-To: <1186471185.826251.312410898174.qpush@grosgo> Message-Id: <20070807071952.E421FDDE09@ozlabs.org> Sender: owner-linux-mm@kvack.org Return-Path: To: Linux Memory Management Cc: linux-kernel@vger.kernel.org List-ID: frv is the last user in the tree of that dubious hook, and it's my understanding that it's not even needed. It's only called by memory.c free_pgd_range() which is always called within an mmu_gather, and tlb_flush() on frv will do a flush_tlb_mm(), which from my reading of the code, seems to do what flush_tlb_ptables() does, which is to clear the cached PGE. Signed-off-by: Benjamin Herrenschmidt --- include/asm-frv/tlbflush.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) Index: linux-work/include/asm-frv/tlbflush.h =================================================================== --- linux-work.orig/include/asm-frv/tlbflush.h 2007-07-27 09:40:38.000000000 +1000 +++ linux-work/include/asm-frv/tlbflush.h 2007-07-27 09:43:17.000000000 +1000 @@ -57,8 +57,7 @@ do { \ #define __flush_tlb_global() flush_tlb_all() #define flush_tlb() flush_tlb_all() #define flush_tlb_kernel_range(start, end) flush_tlb_all() -#define flush_tlb_pgtables(mm,start,end) \ - asm volatile("movgs %0,scr0 ! movgs %0,scr1" :: "r"(ULONG_MAX) : "memory"); +#define flush_tlb_pgtables(mm,start,end) do { } while(0) #else -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org