From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933375AbbFIMem (ORCPT ); Tue, 9 Jun 2015 08:34:42 -0400 Received: from terminus.zytor.com ([198.137.202.10]:51982 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932341AbbFIMec (ORCPT ); Tue, 9 Jun 2015 08:34:32 -0400 Date: Tue, 9 Jun 2015 05:33:54 -0700 From: tip-bot for Dave Hansen Message-ID: Cc: tglx@linutronix.de, akpm@linux-foundation.org, mingo@kernel.org, hpa@zytor.com, peterz@infradead.org, linux-kernel@vger.kernel.org, dave.hansen@linux.intel.com, torvalds@linux-foundation.org, dave@sr71.net Reply-To: tglx@linutronix.de, mingo@kernel.org, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, dave.hansen@linux.intel.com, peterz@infradead.org, hpa@zytor.com, dave@sr71.net, torvalds@linux-foundation.org In-Reply-To: <20150607183704.EC23A93E@viggo.jf.intel.com> References: <20150607183704.EC23A93E@viggo.jf.intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/fpu] x86/mpx: Trace allocation of new bounds tables Git-Commit-ID: cd4996dce18b619bd7b3acf75c91f49c77f05a97 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: cd4996dce18b619bd7b3acf75c91f49c77f05a97 Gitweb: http://git.kernel.org/tip/cd4996dce18b619bd7b3acf75c91f49c77f05a97 Author: Dave Hansen AuthorDate: Sun, 7 Jun 2015 11:37:04 -0700 Committer: Ingo Molnar CommitDate: Tue, 9 Jun 2015 12:24:32 +0200 x86/mpx: Trace allocation of new bounds tables Bounds tables are a significant consumer of memory. It is important to know when they are being allocated. Add a trace point to trace whenever an allocation occurs and also its virtual address. Signed-off-by: Dave Hansen Reviewed-by: Thomas Gleixner Cc: Andrew Morton Cc: Dave Hansen Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20150607183704.EC23A93E@viggo.jf.intel.com Signed-off-by: Ingo Molnar --- arch/x86/include/asm/trace/mpx.h | 16 ++++++++++++++++ arch/x86/mm/mpx.c | 1 + 2 files changed, 17 insertions(+) diff --git a/arch/x86/include/asm/trace/mpx.h b/arch/x86/include/asm/trace/mpx.h index c13c6fa..173dd3b 100644 --- a/arch/x86/include/asm/trace/mpx.h +++ b/arch/x86/include/asm/trace/mpx.h @@ -95,6 +95,22 @@ DEFINE_EVENT(mpx_range_trace, mpx_unmap_search, TP_ARGS(start, end) ); +TRACE_EVENT(mpx_new_bounds_table, + + TP_PROTO(unsigned long table_vaddr), + TP_ARGS(table_vaddr), + + TP_STRUCT__entry( + __field(unsigned long, table_vaddr) + ), + + TP_fast_assign( + __entry->table_vaddr = table_vaddr; + ), + + TP_printk("table vaddr:%p", (void *)__entry->table_vaddr) +); + #else /* diff --git a/arch/x86/mm/mpx.c b/arch/x86/mm/mpx.c index 55729ee..c17fd27 100644 --- a/arch/x86/mm/mpx.c +++ b/arch/x86/mm/mpx.c @@ -483,6 +483,7 @@ static int allocate_bt(long __user *bd_entry) ret = -EINVAL; goto out_unmap; } + trace_mpx_new_bounds_table(bt_addr); return 0; out_unmap: vm_munmap(bt_addr & MPX_BT_ADDR_MASK, MPX_BT_SIZE_BYTES);