Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754183AbYKXX11 (ORCPT ); Mon, 24 Nov 2008 18:27:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752477AbYKXX1T (ORCPT ); Mon, 24 Nov 2008 18:27:19 -0500 Received: from e3.ny.us.ibm.com ([32.97.182.143]:38042 "EHLO e3.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753126AbYKXX1R (ORCPT ); Mon, 24 Nov 2008 18:27:17 -0500 Subject: [Patch 1/3] OProfile SPU event profiling support for IBM Cell processor From: Carl Love To: Arnd Bergmann , linux-kernel , linuxppc-dev@ozlabs.org, oprofile-list@lists.sourceforge.net, cel , cbe-oss-dev Content-Type: text/plain Date: Mon, 24 Nov 2008 15:26:22 -0800 Message-Id: <1227569182.6509.212.camel@carll-linux-desktop> Mime-Version: 1.0 X-Mailer: Evolution 2.12.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 12470 Lines: 258 This patch adds the SPU events for the IBM Cell processor to the list of available events to the user level tool. Signed-off-by: Carl Love Index: oprofile-0.9.4/events/ppc64/cell-be/events =================================================================== --- oprofile-0.9.4.orig/events/ppc64/cell-be/events +++ oprofile-0.9.4/events/ppc64/cell-be/events @@ -108,12 +108,42 @@ event:0xdbe counters:0,1,2,3 um:PPU_0_cy event:0xdbf counters:0,1,2,3 um:PPU_0_cycles minimum:10000 name:stb_not_empty : At least one store gather buffer not empty. # Cell BE Island 4 - Synergistic Processor Unit (SPU) - +# +# OPROFILE FOR CELL ONLY SUPPORTS PROFILING ON ONE SPU EVENT AT A TIME +# # CBE Signal Group 41 - SPU (NClk) +event:0x1004 counters:0 um:SPU_02_cycles minimum:10000 name:dual_instrctn_commit : Dual instruction committed. +event:0x1005 counters:0 um:SPU_02_cycles minimum:10000 name:sngl_instrctn_commit : Single instruction committed. +event:0x1006 counters:0 um:SPU_02_cycles minimum:10000 name:ppln0_instrctn_commit : Pipeline 0 instruction committed. +event:0x1007 counters:0 um:SPU_02_cycles minimum:10000 name:ppln1_instrctn_commit : Pipeline 1 instruction committed. +event:0x1008 counters:0 um:SPU_02_cycles_or_edges minimum:10000 name:instrctn_ftch_stll : Instruction fetch stall. +event:0x1009 counters:0 um:SPU_02_cycles_or_edges minimum:10000 name:lcl_strg_bsy : Local storage busy. +event:0x100A counters:0 um:SPU_02_cycles minimum:10000 name:dma_cnflct_ld_st : DMA may conflict with load or store. +event:0x100B counters:0 um:SPU_02_cycles minimum:10000 name:str_to_lcl_strg : Store instruction to local storage issued. +event:0x100C counters:0 um:SPU_02_cycles minimum:10000 name:ld_frm_lcl_strg : Load intruction from local storage issued. +event:0x100D counters:0 um:SPU_02_cycles minimum:10000 name:fpu_exctn : Floating-Point Unit (FPU) exception. +event:0x100E counters:0 um:SPU_02_cycles minimum:10000 name:brnch_instrctn_commit : Branch instruction committed. +event:0x100F counters:0 um:SPU_02_cycles minimum:10000 name:change_of_flow : Non-sequential change of the SPU program counter, which can be caused by branch, asynchronous interrupt, stalled wait on channel, error correction code (ECC) error, and so forth. +event:0x1010 counters:0 um:SPU_02_cycles minimum:10000 name:brnch_not_tkn : Branch not taken. +event:0x1011 counters:0 um:SPU_02_cycles minimum:10000 name:brnch_mss_prdctn : Branch miss prediction; not exact. Certain other code sequences can cause additional pulses on this signal (see Note 2). +event:0x1012 counters:0 um:SPU_02_cycles minimum:10000 name:brnch_hnt_mss_prdctn : Branch hint miss prediction; not exact. Certain other code sequences can cause additional pulses on this signal (see Note 2). +event:0x1013 counters:0 um:SPU_02_cycles minimum:10000 name:instrctn_seqnc_err : Instruction sequence error. +event:0x1015 counters:0 um:SPU_02_cycles_or_edges minimum:10000 name:stlld_wait_on_chnl_wrt : Stalled waiting on any blocking channel write (see Note 3). +event:0x1016 counters:0 um:SPU_02_cycles_or_edges minimum:10000 name:stlld_wait_on_chnl0 : Stalled waiting on External Event Status (Channel 0) (see Note 3). +event:0x1017 counters:0 um:SPU_02_cycles_or_edges minimum:10000 name:stlld_wait_on_chnl3 : Stalled waiting on Signal Notification 1 (Channel 3) (see Note 3). +event:0x1018 counters:0 um:SPU_02_cycles_or_edges minimum:10000 name:stlld_wait_on_chnl4 : Stalled waiting on Signal Notification 2 (Channel 4) (see Note 3). +event:0x1019 counters:0 um:SPU_02_cycles_or_edges minimum:10000 name:stlld_wait_on_chnl21 : Stalled waiting on DMA Command Opcode or ClassID Register (Channel 21) (see Note 3). +event:0x101A counters:0 um:SPU_02_cycles_or_edges minimum:10000 name:stlld_wait_on_chnl24 : Stalled waiting on Tag Group Status (Channel 24) (see Note 3). +event:0x101B counters:0 um:SPU_02_cycles_or_edges minimum:10000 name:stlld_wait_on_chnl25 : Stalled waiting on List Stall-and-Notify Tag Status (Channel 25) (see Note 3). +event:0x101C counters:0 um:SPU_02_cycles_or_edges minimum:10000 name:stlld_wait_on_chnl28 : Stalled waiting on PPU Mailbox (Channel 28) (see Note 3). +event:0x1022 counters:0 um:SPU_02_cycles_or_edges minimum:10000 name:stlld_wait_on_chnl29 : Stalled waiting on SPU Mailbox (Channel 29) (see Note 3). + # CBE Signal Group 42 - SPU Trigger (NClk) +event:0x10A1 counters:0 um:SPU_Trigger_cycles_or_edges minimum:10000 name:stld_wait_chnl_op : Stalled waiting on channel operation (See Note 2). # CBE Signal Group 43 - SPU Event (NClk) +event:0x1107 counters:0 um:SPU_Event_cycles_or_edges minimum:10000 name:instrctn_ftch_stll : Instruction fetch stall. # Cell BE Island 6 - Element Interconnect Bus (EIB) Index: oprofile-0.9.4/events/ppc64/cell-be/unit_masks =================================================================== --- oprofile-0.9.4.orig/events/ppc64/cell-be/unit_masks +++ oprofile-0.9.4/events/ppc64/cell-be/unit_masks @@ -72,3 +72,66 @@ name:PPU_0123_cycles type:bitmask defaul 0x002 Positive polarity [default ] 0x030 PPU Bus Word 0/1 [default ] 0x0c0 PPU Bus Word 2/3 [optional ] +name:SPU_02_cycles type:bitmask default:0x0113 + 0x0001 Count cycles [mandatory] + 0x0000 Negative polarity [optional ] + 0x0002 Positive polarity [default ] + 0x0110 SPU Bus Word 0 [default ] + 0x0140 SPU Bus Word 2 [optional ] + 0x0000 SPU 0 [default ] + 0x1000 SPU 1 [optional ] + 0x2000 SPU 2 [optional ] + 0x3000 SPU 3 [optional ] + 0x4000 SPU 4 [optional ] + 0x5000 SPU 5 [optional ] + 0x6000 SPU 6 [optional ] + 0x7000 SPU 7 [optional ] +name:SPU_02_cycles_or_edges type:bitmask default:0x0113 + 0x0000 Count edges [optional ] + 0x0001 Count cycles [default ] + 0x0000 Negative polarity [optional ] + 0x0002 Positive polarity [default ] + 0x0110 SPU Bus Word 0 [default ] + 0x0140 SPU Bus Word 2 [optional ] + 0x0000 SPU 0 [default ] + 0x1000 SPU 1 [optional ] + 0x2000 SPU 2 [optional ] + 0x3000 SPU 3 [optional ] + 0x4000 SPU 4 [optional ] + 0x5000 SPU 5 [optional ] + 0x6000 SPU 6 [optional ] + 0x7000 SPU 7 [optional ] +name:SPU_Trigger_cycles_or_edges type:bitmask default:0x0107 + 0x0000 Count edges [optional ] + 0x0001 Count cycles [default ] + 0x0000 Negative polarity [optional ] + 0x0002 Positive polarity [default ] + 0x0104 SPU Trigger 0 [default ] + 0x0114 SPU Trigger 1 [optional ] + 0x0124 SPU Trigger 2 [optional ] + 0x0134 SPU Trigger 3 [optional ] + 0x0000 SPU 0 [default ] + 0x1000 SPU 1 [optional ] + 0x2000 SPU 2 [optional ] + 0x3000 SPU 3 [optional ] + 0x4000 SPU 4 [optional ] + 0x5000 SPU 5 [optional ] + 0x6000 SPU 6 [optional ] + 0x7000 SPU 7 [optional ] +name:SPU_Event_cycles_or_edges type:bitmask default:0x0147 + 0x0000 Count edges [optional ] + 0x0001 Count cycles [default ] + 0x0000 Negative polarity [optional ] + 0x0002 Positive polarity [default ] + 0x0144 SPU Event 0 [default ] + 0x0154 SPU Event 1 [optional ] + 0x0164 SPU Event 2 [optional ] + 0x0174 SPU Event 3 [optional ] + 0x0000 SPU 0 [default ] + 0x1000 SPU 1 [optional ] + 0x2000 SPU 2 [optional ] + 0x3000 SPU 3 [optional ] + 0x4000 SPU 4 [optional ] + 0x5000 SPU 5 [optional ] + 0x6000 SPU 6 [optional ] + 0x7000 SPU 7 [optional ] Index: oprofile-0.9.4/ChangeLog =================================================================== --- oprofile-0.9.4.orig/ChangeLog +++ oprofile-0.9.4/ChangeLog @@ -1,3 +1,11 @@ +2008-11-17 Carl Love * configure.in: bump version in AM_INIT_AUTOMAKE to 0.9.4 Index: oprofile-0.9.4/utils/opcontrol =================================================================== --- oprofile-0.9.4.orig/utils/opcontrol +++ oprofile-0.9.4/utils/opcontrol @@ -1154,31 +1154,56 @@ check_event_mapping_data() fi if [ "$CPUTYPE" = "ppc64/cell-be" ]; then event_num=`echo $EVENT_STR | awk '{print $1}'` - if [ "$event_num" = "2" ] ; then - if [ "$CYCLES" = "1" \ - -o "$GRP_NUM_CK_VAL" != "" ] ; then - echo "ERROR: SPU CYCLES cannot be counted with any other events." >&2 - exit 1 - else - SPU_CYCLES=2 - return - fi - fi - if [ "$event_num" = "1" ] ; then - # CYCLES is compatible with any event except SPU_CYCLES - if [ "$SPU_CYCLES" = "2" ] ; then - echo "ERROR: PPU CYCLES and SPU CYCLES cannot be counted simultaneously." >&2 - exit 1 - else - CYCLES=1 - return - fi + # PPU event and cycle events can be measured at + # the same time. SPU event can not be measured + # at the same time as any other event. Similarly for + # SPU Cycles + + # We use EVNT_MSK to track what events have already + # been seen. Valid values are: + # NULL string - no events seen yet + # 1 - PPU CYCLES or PPU Event seen + # 2 - SPU CYCLES seen + # 3 - SPU EVENT seen + + # check if event is PPU_CYCLES + if [ "$event_num" = "1" ]; then + if [ "$EVNT_MSK" = "1" ] || [ "$EVNT_MSK" = "" ]; then + EVNT_MSK=1 + else + echo "PPU CYCLES not compatible with previously specified event" + exit 1 + fi + + # check if event is SPU_CYCLES + elif [ "$event_num" = "2" ]; then + if [ "$EVNT_MSK" = "" ]; then + EVNT_MSK=2 + else + echo "SPU CYCLES not compatible with any other event" + exit 1 + fi + + # check if event is SPU Event profiling + elif [ "$event_num" -ge "4100" ] && [ "$event_num" -le "4163" ] ; then + if [ "$EVNT_MSK" = "" ]; then + EVNT_MSK=3 + else + echo "SPU event profiling not compatible with any other event" + exit 1 + fi + + # check if event is PPU Event profiling (all other events + # are PPU events) else - if [ "$SPU_CYCLES" = "2" ] ; then - echo "ERROR: SPU CYCLES cannot be counted with any other events." >&2 + if [ "$EVNT_MSK" = "1" ] || [ "$EVNT_MSK" = "" ]; then + EVNT_MSK=1 + else + echo "PPU profiling not compatible with previously specified event" exit 1 - fi + fi fi + len=`echo -n $event_num | wc -m` num_chars_in_grpid=`expr $len - 2` GRP_NUM_VAL=`echo | awk '{print substr("'"${event_num}"'",1,"'"${num_chars_in_grpid}"'")}'` Index: oprofile-0.9.4/doc/oprofile.xml =================================================================== --- oprofile-0.9.4.orig/doc/oprofile.xml +++ oprofile-0.9.4/doc/oprofile.xml @@ -123,6 +123,10 @@ For information on how to use OProfile's of 2.6.22 or more recent. Additionally, full support of SPE profiling requires a BFD library from binutils code dated January 2007 or later. To ensure the proper BFD support exists, run the configure utility with --with-target=cell-be. + + Profiling the Cell Broadband Engine using SPU events requires a kernel version of 2.6.TBD or + more recent. + Attempting to profile SPEs with kernel versions older than 2.6.22 may cause the system to crash. @@ -1195,6 +1199,12 @@ is collected in the sample data in order the performance of each separate SPU is not necessary. +Profiling with an SPU event (events 4100 through 4163) is not compatible with any other +event. Further more, only one SPU event can be specified at a time. The hardware only +supports profiling on one SPU per node at a time. The OProfile kernel code time slices +between the eight SPUs to collect data on all SPUs. + + SPU profile reports have some unique characteristics compared to reports for standard architectures: -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/