From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37326) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UoF2W-0005ZE-GW for qemu-devel@nongnu.org; Sun, 16 Jun 2013 11:38:49 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UoF2V-0000QN-De for qemu-devel@nongnu.org; Sun, 16 Jun 2013 11:38:48 -0400 Received: from e28smtp01.in.ibm.com ([122.248.162.1]:46508) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UoF2U-0000Pn-PJ for qemu-devel@nongnu.org; Sun, 16 Jun 2013 11:38:47 -0400 Received: from /spool/local by e28smtp01.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sun, 16 Jun 2013 21:02:02 +0530 Received: from d28relay03.in.ibm.com (d28relay03.in.ibm.com [9.184.220.60]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id 17F0AE0053 for ; Sun, 16 Jun 2013 21:08:01 +0530 (IST) Received: from d28av01.in.ibm.com (d28av01.in.ibm.com [9.184.220.63]) by d28relay03.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r5GFceds31522940 for ; Sun, 16 Jun 2013 21:08:41 +0530 Received: from d28av01.in.ibm.com (loopback [127.0.0.1]) by d28av01.in.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r5GFcbjR019232 for ; Sun, 16 Jun 2013 15:38:37 GMT From: Lei Li Date: Sun, 16 Jun 2013 23:37:29 +0800 Message-Id: <1371397053-4503-4-git-send-email-lilei@linux.vnet.ibm.com> In-Reply-To: <1371397053-4503-1-git-send-email-lilei@linux.vnet.ibm.com> References: <1371397053-4503-1-git-send-email-lilei@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH 3/7] arch_init: add ram_madvise_free() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: lagarcia@br.ibm.com, aliguori@us.ibm.com, Lei Li , quintela@redhat.com Signed-off-by: Lei Li --- arch_init.c | 13 +++++++++++++ include/migration/migration.h | 3 +++ 2 files changed, 16 insertions(+), 0 deletions(-) diff --git a/arch_init.c b/arch_init.c index 872020e..fc66bd2 100644 --- a/arch_init.c +++ b/arch_init.c @@ -524,6 +524,19 @@ uint64_t ram_bytes_total(void) return total; } +void ram_madvise_free(ram_addr_t size) +{ + void *ram; + RAMBlock *block = NULL; + + ram = memory_region_get_ram_ptr(block->mr); + + /* XXX. Here just simplely madvise(.., MADV_DONTNEED) the whole ram + * pages, need more work to keep MADV_DONTNEED ram pages that + * already sent. */ + qemu_madvise(ram, size, MADV_DONTNEED); +} + static void migration_end(void) { if (migration_bitmap) { diff --git a/include/migration/migration.h b/include/migration/migration.h index 8866c3c..9cc5285 100644 --- a/include/migration/migration.h +++ b/include/migration/migration.h @@ -21,6 +21,7 @@ #include "qapi/error.h" #include "migration/vmstate.h" #include "qapi-types.h" +#include "exec/memory.h" enum { MIG_STATE_ERROR, @@ -100,6 +101,8 @@ uint64_t ram_bytes_remaining(void); uint64_t ram_bytes_transferred(void); uint64_t ram_bytes_total(void); +void ram_madvise_free(ram_addr_t size); + extern SaveVMHandlers savevm_ram_handlers; uint64_t dup_mig_bytes_transferred(void); -- 1.7.7.6