From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e34.co.us.ibm.com (e34.co.us.ibm.com [32.97.110.152]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e34.co.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 5CBBADDF7F for ; Fri, 13 Jun 2008 08:16:05 +1000 (EST) Received: from d03relay02.boulder.ibm.com (d03relay02.boulder.ibm.com [9.17.195.227]) by e34.co.us.ibm.com (8.13.8/8.13.8) with ESMTP id m5CMG21d013948 for ; Thu, 12 Jun 2008 18:16:02 -0400 Received: from d03av04.boulder.ibm.com (d03av04.boulder.ibm.com [9.17.195.170]) by d03relay02.boulder.ibm.com (8.13.8/8.13.8/NCO v9.0) with ESMTP id m5CMG2cp174882 for ; Thu, 12 Jun 2008 16:16:02 -0600 Received: from d03av04.boulder.ibm.com (loopback [127.0.0.1]) by d03av04.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m5CMG16P018298 for ; Thu, 12 Jun 2008 16:16:02 -0600 Date: Thu, 12 Jun 2008 17:14:31 -0500 From: Robert Jennings To: paulus@samba.org Subject: [PATCH 09/19] powerpc: Add CMO paging statistics Message-ID: <20080612221431.GP30916@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20080612215312.GF30916@linux.vnet.ibm.com> Cc: Brian King , linuxppc-dev@ozlabs.org, David Darrington List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , =46rom: Brian King With the addition of Cooperative Memory Overcommitment (CMO) support for IBM Power Systems, two fields have been added to the VPA to report paging statistics. Add support in lparcfg to report them to userspace. Signed-off-by: Brian King --- arch/powerpc/kernel/lparcfg.c | 20 ++++++++++++++++++++ include/asm-powerpc/lppaca.h | 5 ++++- 2 files changed, 24 insertions(+), 1 deletion(-) Index: b/arch/powerpc/kernel/lparcfg.c =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --- a/arch/powerpc/kernel/lparcfg.c +++ b/arch/powerpc/kernel/lparcfg.c @@ -410,6 +410,25 @@ static int lparcfg_count_active_processo return count; } =20 +static void pseries_cmo_data(struct seq_file *m) +{ + int cpu; + unsigned long cmo_faults =3D 0; + unsigned long cmo_fault_time =3D 0; + + if (!firmware_has_feature(FW_FEATURE_CMO)) + return; + + for_each_possible_cpu(cpu) { + cmo_faults +=3D lppaca[cpu].cmo_faults; + cmo_fault_time +=3D lppaca[cpu].cmo_fault_time; + } + + seq_printf(m, "cmo_faults=3D%lu\n", cmo_faults); + seq_printf(m, "cmo_fault_time_usec=3D%lu\n", + cmo_fault_time / tb_ticks_per_usec); +} + static int pseries_lparcfg_data(struct seq_file *m, void *v) { int partition_potential_processors; @@ -435,6 +454,7 @@ static int pseries_lparcfg_data(struct s parse_system_parameter_string(m); parse_ppp_data(m); parse_mpp_data(m); + pseries_cmo_data(m); =20 seq_printf(m, "purr=3D%ld\n", get_purr()); =20 Index: b/include/asm-powerpc/lppaca.h =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --- a/include/asm-powerpc/lppaca.h +++ b/include/asm-powerpc/lppaca.h @@ -125,7 +125,10 @@ struct lppaca { // NOTE: This value will ALWAYS be zero for dedicated processors and // will NEVER be zero for shared processors (ie, initialized to a 1). volatile u32 yield_count; // PLIC increments each dispatchx00-x03 - u8 reserved6[124]; // Reserved x04-x7F + u32 reserved6; + volatile u64 cmo_faults; // CMO page fault count x08-x0F + volatile u64 cmo_fault_time; // CMO page fault time x10-x17 + u8 reserved7[104]; // Reserved x18-x7F =20 //=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D // CACHE_LINE_4-5 0x0180 - 0x027F Contains PMC interrupt data