From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx104.postini.com [74.125.245.104]) by kanga.kvack.org (Postfix) with SMTP id A5E5C6B0072 for ; Wed, 2 Jan 2013 23:28:16 -0500 (EST) From: Minchan Kim Subject: [RFC 8/8] extend PGVOLATILE vmstat to kswapd Date: Thu, 3 Jan 2013 13:28:06 +0900 Message-Id: <1357187286-18759-9-git-send-email-minchan@kernel.org> In-Reply-To: <1357187286-18759-1-git-send-email-minchan@kernel.org> References: <1357187286-18759-1-git-send-email-minchan@kernel.org> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Minchan Kim Now kswapd can discard volatile pages so let's cover it for vmstat. Signed-off-by: Minchan Kim --- include/linux/vm_event_item.h | 3 ++- mm/mvolatile.c | 5 ++++- mm/vmstat.c | 3 ++- 3 files changed, 8 insertions(+), 3 deletions(-) diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index 721d096..4efa3bf 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -26,7 +26,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, PGFREE, PGACTIVATE, PGDEACTIVATE, PGFAULT, PGMAJFAULT, #ifdef CONFIG_VOLATILE_PAGE - PGVOLATILE, + PGVOLATILE_DIRECT, + PGVOLATILE_KSWAPD, #endif FOR_ALL_ZONES(PGREFILL), FOR_ALL_ZONES(PGSTEAL_KSWAPD), diff --git a/mm/mvolatile.c b/mm/mvolatile.c index 1c7bf5a..08a7eb3 100644 --- a/mm/mvolatile.c +++ b/mm/mvolatile.c @@ -246,7 +246,10 @@ int discard_volatile_page(struct page *page, enum ttu_flags ttu_flags) if (try_to_volatile_page(page, ttu_flags)) { if (page_freeze_refs(page, 1)) { unlock_page(page); - count_vm_event(PGVOLATILE); + if (current_is_kswapd()) + count_vm_event(PGVOLATILE_KSWAPD); + else + count_vm_event(PGVOLATILE_DIRECT); return 1; } } diff --git a/mm/vmstat.c b/mm/vmstat.c index 3d08e1a..416f550 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -754,7 +754,8 @@ const char * const vmstat_text[] = { "pgmajfault", #ifdef CONFIG_VOLATILE_PAGE - "pgvolatile", + "pgvolatile_direct", + "pgvolatile_kswapd", #endif TEXTS_FOR_ZONES("pgrefill") TEXTS_FOR_ZONES("pgsteal_kswapd") -- 1.7.9.5 -- 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