Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751666AbZIZKxL (ORCPT ); Sat, 26 Sep 2009 06:53:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751074AbZIZKxK (ORCPT ); Sat, 26 Sep 2009 06:53:10 -0400 Received: from mga14.intel.com ([143.182.124.37]:7789 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751013AbZIZKxI (ORCPT ); Sat, 26 Sep 2009 06:53:08 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.44,455,1249282800"; d="scan'208";a="191961668" Date: Sat, 26 Sep 2009 18:52:59 +0800 From: Wu Fengguang To: Andi Kleen Cc: Andrew Morton , Hugh Dickins , Nick Piggin , "linux-mm@kvack.org" , LKML Subject: Re: [RFC][PATCH] HWPOISON: remove the unsafe __set_page_locked() Message-ID: <20090926105259.GA5496@localhost> References: <20090926031537.GA10176@localhost> <20090926034936.GK30185@one.firstfloor.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090926034936.GK30185@one.firstfloor.org> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 31600 Lines: 526 On Sat, Sep 26, 2009 at 11:49:36AM +0800, Andi Kleen wrote: > On Sat, Sep 26, 2009 at 11:15:37AM +0800, Wu Fengguang wrote: > > The swap cache and page cache code assume that they 'own' the newly > > allocated page and therefore can disregard the locking rules. However > > now hwpoison can hit any time on any page. > > > > So use the safer lock_page()/trylock_page(). The main intention is not > > to close such a small time window of memory corruption. But to avoid > > kernel oops that may result from such races, and also avoid raising > > false alerts in hwpoison stress tests. > > > > This in theory will slightly increase page cache/swap cache overheads, > > however it seems to be too small to be measurable in benchmark. > > Thanks. Can you please describe what benchmarks you used? Good question. The test case is to copy 1GB sparse file over NFS. I ran it 100 times (2 hours total wall time) and the overheads are ~0.008%. The average time reported by the function profiler: total time add_to_page_cache_lru percent before 1940083424.361 4841664.805 0.242% after 1914258447.188 4889044.435 0.250% The script used is: for i in `seq 1 100` do # copy 1GB sparse file over NFS echo 1 > /debug/tracing/function_profile_enabled cp /tmp/sparse/1G /dev/null echo 0 > /debug/tracing/function_profile_enabled fadvise /tmp/sparse/1G 0 0 dontneed cat /debug/tracing/trace_stat/function0 > function0.$i cat /debug/tracing/trace_stat/function1 > function1.$i done File function0.1 after patch: Function Hit Time Avg -------- --- ---- --- schedule 32492 474358128 us 14599.22 us schedule_timeout 26 99994288 us 3845934 us poll_schedule_timeout 8 52914376 us 6614297 us sys_poll 6 52914373 us 8819062 us schedule_hrtimeout_range 8 52914373 us 6614296 us do_sys_poll 6 52914355 us 8819059 us sys_read 86997 40703194 us 467.868 us vfs_read 87002 40550651 us 466.088 us do_sync_read 86987 40011054 us 459.965 us nfs_file_read 86985 39945631 us 459.224 us generic_file_aio_read 86985 39785858 us 457.387 us page_cache_async_readahead 2886 34379069 us 11912.35 us ondemand_readahead 2889 34371850 us 11897.49 us ra_submit 2891 34368378 us 11888.05 us __do_page_cache_readahead 2891 34360744 us 11885.41 us nfs_readpages 2876 33198107 us 11543.15 us read_cache_pages 2876 31617284 us 10993.49 us __rpc_execute 84468 25404441 us 300.758 us readpage_async_filler 174071 24947004 us 143.315 us do_softirq 44822 24829675 us 553.961 us __do_softirq 44822 24803408 us 553.375 us net_rx_action 38424 24357207 us 633.906 us e1000_clean 39042 24253141 us 621.206 us nfs_pageio_doio 43534 22993433 us 528.171 us nfs_pagein_one 43520 22939752 us 527.108 us nfs_read_rpcsetup 43513 22533176 us 517.849 us e1000_clean_rx_irq 39042 22047306 us 564.707 us rpc_run_task 43528 22042766 us 506.404 us call_transmit 45873 21842655 us 476.154 us nfs_pageio_add_request 174091 21583666 us 123.979 us rpc_execute 43528 21254402 us 488.292 us cpuidle_idle_call 18073 19445493 us 1075.941 us acpi_idle_enter_c1 17999 19396945 us 1077.667 us e1000_receive_skb 436279 18818686 us 43.134 us tcp_v4_do_rcv 513521 18681598 us 36.379 us xprt_transmit 43346 18532249 us 427.542 us tcp_rcv_established 513521 18384627 us 35.801 us napi_gro_receive 436279 18114586 us 41.520 us napi_skb_finish 436279 17130261 us 39.264 us netif_receive_skb 436279 16886046 us 38.704 us ip_rcv 436279 16500338 us 37.820 us xs_tcp_send_request 43346 16418581 us 378.779 us xs_sendpages 43346 16367619 us 377.603 us xs_send_kvec 43347 16310325 us 376.273 us kernel_sendmsg 43347 16254698 us 374.990 us sock_sendmsg 43347 16177184 us 373.201 us tcp_sendmsg 43347 16127746 us 372.061 us do_IRQ 45271 15968995 us 352.742 us ip_local_deliver 436279 15816133 us 36.252 us irq_exit 53709 15421475 us 287.130 us acpi_processor_ffh_cstate_ente 17999 15394735 us 855.310 us mwait_idle_with_hints 17999 15386089 us 854.830 us tcp_v4_rcv 436217 15173852 us 34.785 us release_sock 43364 13536313 us 312.155 us xs_tcp_data_ready 512045 10092920 us 19.711 us _spin_unlock_bh 518900 9851221 us 18.984 us local_bh_enable_ip 511352 9403704 us 18.389 us tcp_read_sock 1024090 8832051 us 8.624 us __tcp_ack_snd_check 512045 6644838 us 12.977 us add_to_page_cache_lru 174072 6287717 us 36.121 us tcp_transmit_skb 296572 5962431 us 20.104 us tcp_send_ack 253210 5775135 us 22.807 us __kfree_skb 802932 5216451 us 6.496 us add_to_page_cache_locked 174072 4716425 us 27.094 us [...] Detailed time before patch (100 runs * 2 CPU): Total add_to_page_cache_lru percent 1927694859.404 6703561 0.34775011030908648% 1994166534.446 7311783 0.36665859514242066% 2132812997.930 6249683 0.29302536162643533% 1972582396.980 7908593 0.40092586307715006% 2415371209.622 7670327 0.31756307144194151% 2163473353.153 7406991 0.34236571433640306% 1833544521.635 7952113 0.43370165851816772% 2087748556.683 7995535 0.38297404035585819% 2185868844.795 7117368 0.32560819085499598% 1980423680.193 6514699 0.32895481230385598% 1958021484.352 6745228 0.34449203207963308% 2008592063.702 7398967 0.36836583862444905% 2448117568.931 6224454 0.25425470079519025% 2213021186.789 6938228 0.31351837214297412% 1828902235.789 7479842 0.40897987074596959% 1866644864.837 7720792 0.41361868802366963% 2054526163.572 8475856 0.41254553727677401% 1902862587.026 8334661 0.43800645705196778% 2148449373.925 8672498 0.40366313050031155% 2104880443.231 7741619 0.36779376353160392% 2270646549.540 6486688 0.2856758134071597% 2250814274.826 7512331 0.33376058984612328% 2214008898.106 6391259 0.28867359139646992% 2446226035.589 7738434 0.31634173978271579% 1920377000.358 6464992 0.33665223020244384% 2030446733.714 6022617 0.2966153654759367% 2157128575.464 7375670 0.34192074055731642% 2185670134.683 7943199 0.36342167438509865% 2224381465.969 8492920 0.38181041021667828% 2479045291.455 8161934 0.32923698603382928% 1971641972.432 8114434 0.41155717485517562% 2208169216.013 8138519 0.36856410011433138% 1971312194.985 8122576 0.41203904793283169% 2279129743.345 7365286 0.3231622079219687% 2360162707.877 7412468 0.3140659741491984% 1885022652.013 8252339 0.43778460652382062% 2065345722.062 7985361 0.3866355600759942% 1975982196.916 7925371 0.4010851419799969% 2169738273.075 7203856 0.33201497569522709% 2034570957.887 7396992 0.36356520136717829% 1789538123.758 7380292 0.41241323121418116% 1912812047.546 8697404 0.45469203370807615% 2221047646.893 7451321 0.33548676951723994% 2163981380.559 7982481 0.36887937538251664% 1969189605.396 7353112 0.37340802428831149% 2278909389.270 7088803 0.31106120468750831% 2104996788.904 7342692 0.34882200479854836% 2374705789.293 7327329 0.30855733931492624% 2137944282.456 8112283 0.3794431438915179% 2268117031.230 6889022 0.30373309247909852% 1899091967.945 8173918 0.43041190937398177% 2098779842.987 7858621 0.37443760603377763% 2124662819.215 8156209 0.38388251190904155% 2317714239.959 7048899 0.30413149638864423% 2218944220.453 6659501 0.30012025262358577% 1945126557.801 7704643 0.3960998305791596% 2092060468.851 7616315 0.36405807161888715% 1933379809.531 7300893 0.37762331870896354% 1903832170.769 7508856 0.39440745435912067% 2435478683.656 6790800 0.27882814354203433% 2126189870.763 7104836 0.33415811530747125% 2161363441.772 7011298 0.32439236569356278% 2064449342.765 6822211 0.33046153561039859% 2116816508.947 8156178 0.38530396779913867% 1982774633.856 7131335 0.35966442571092105% 2323253766.182 7275361 0.3131539526978242% 1905927501.820 7477458 0.39232646534874271% 2252162684.001 8064426 0.35807475442552977% 2027146552.281 7875866 0.38851981328818402% 1845397260.011 7598767 0.41176862915439172% 2177206310.501 7366288 0.33833670077434846% 2041629016.560 6600368 0.32328929234759562% 2189308825.112 8348863 0.38134697600613249% 1930990433.231 7344038 0.38032492930126544% 2102320863.469 7299411 0.34720727586536809% 1895798071.683 8051595 0.42470741585110772% 2019648719.623 7992832 0.39575357448754711% 1961118039.267 7837733 0.39965636147681766% 2142238585.905 8084509 0.37738602288244455% 2263212432.641 7757018 0.34274369865263332% 2200111036.549 7069702 0.32133387281622078% 1941699880.568 7786856 0.4010329339734075% 1939777157.562 7729686 0.39848319534368681% 1983015138.927 8136252 0.41029701893261827% 2040218650.019 7968023 0.39054750332400873% 1850721920.862 7835912 0.42339758943095634% 2167986192.252 8656589 0.39929170356052646% 2128868496.040 8248906 0.38747841942065214% 1984840247.084 7754853 0.39070413910605312% 2130780080.168 7053725 0.33103955990821227% 2062729676.752 7968701 0.38631824081513272% 1995756518.448 7903687 0.39602461156666058% 1921150053.008 8307746 0.43243608103345821% 2253731991.230 8033382 0.35644797301810893% 2143807312.838 6755593 0.31512127790332323% 1948787937.040 7152297 0.36701258582622248% 2276500726.783 7277806 0.31969267193182554% 2282733838.581 6336839 0.27759867983291148% 2003104438.909 7092547 0.35407774363791977% 2239684291.880 6982252 0.3117516171950766% 1801833773.742 2645976 0.14684906224756283% 2016683111.150 2261656 0.11214731692329717% 1962727948.601 2767184 0.14098663046870061% 1845203884.375 2266317 0.1228220371304734% 1516914718.568 1975612 0.13023883121557553% 1557730294.184 2109274 0.13540688063108641% 2171303320.533 1865384 0.085910797554627022% 1617322895.641 2073254 0.12819048104666192% 1867107731.934 1901409 0.10183713384500154% 1772588329.145 2045529 0.11539786008783279% 2030802387.562 2161163 0.10641916777508319% 1853583237.019 1803299 0.097287187539531861% 1453728764.040 3231016 0.22225714176699726% 1989811798.738 2418414 0.1215398361560542% 1956758511.567 2254818 0.11523230826241863% 2001579398.410 1952360 0.097540971971978793% 1636515132.388 1532408 0.093638486419854422% 1926271619.408 1918912 0.09961793449408439% 1642519133.238 1384193 0.084272564744573439% 1677033195.955 1340416 0.07992781557533149% 1693983317.244 3135804 0.18511421972571418% 1487434932.071 2467493 0.1658891388656871% 1720442169.343 3034092 0.17635536108479918% 1640362983.552 1944463 0.11853858075908964% 1821382248.526 2659828 0.1460334864991977% 1947322513.836 3540608 0.18181929160904178% 1673422299.278 2769832 0.16551900863249205% 1836039325.613 2175872 0.11850900847526999% 1582929718.539 2072026 0.13089816785500888% 1476014468.174 1996943 0.13529291501257767% 1847131237.607 2120975 0.11482535495137695% 1734796451.802 1842211 0.10619176665287874% 1804827020.363 1988047 0.11015166426310204% 1647250758.752 2634152 0.15991202225917941% 1506833507.228 2271966 0.15077750720977479% 1919459367.994 1608374 0.083793073550751385% 1913364635.281 2126200 0.11112361756846952% 1733934046.047 2031440 0.11715785872197679% 1762796865.803 2285487 0.12965118354456009% 1711072016.023 2270996 0.13272357789349024% 2082560830.257 2273483 0.10916766353083858% 1857948273.729 1266725 0.06817870109255604% 1738287034.188 2404600 0.1383315846409251% 1618942973.292 2016207 0.12453848179100423% 1820789056.854 2369799 0.13015230902664757% 1561747605.669 2487149 0.15925422206327566% 1884502059.843 2512148 0.13330566485076115% 1352203145.315 2618029 0.19361210695824271% 1911003204.592 1648292 0.086252707271200574% 1525244016.511 2555354 0.16753738892517536% 2190575134.148 1939935 0.088558249829422828% 1643983673.168 1747429 0.10629235730989092% 1781900292.843 1686195 0.094629032094141294% 1566821289.746 2291057 0.14622324926229507% 1777199439.264 2456866 0.13824368530171682% 1633063412.403 1953080 0.11959609070698031% 1913601422.874 1821650 0.095194849785599556% 2094732749.709 2322465 0.11087166132876074% 1951529182.943 2270128 0.11632559839953495% 1450396654.276 2867633 0.19771370759479912% 1643954213.946 2460211 0.14965203891504558% 1845971802.604 2593942 0.14051904781757141% 1671974226.831 2552423 0.15265923116756236% 1792483105.554 1547320 0.086322710390164162% 1774273751.516 2101959 0.1184686973024323% 1797523443.598 1781759 0.099122990932099045% 1877038808.523 2131598 0.11356174365288201% 1485614991.186 1796722 0.12094129439052281% 2008042349.453 1972441 0.09822706182154485% 2178564679.489 1948988 0.089462021410222761% 1462911389.586 2076158 0.14191960051575969% 1976013519.965 2692701 0.13626936115536772% 1473561005.083 1369873 0.092963439944099252% 2190713955.687 2450228 0.11184609444967988% 1648795783.114 2557892 0.15513698095279177% 2116292380.702 1948901 0.092090347145394241% 1704227210.803 1980402 0.11620527987385389% 1984573918.515 2325530 0.11718031655581404% 1856414008.018 1798348 0.096872141248277158% 1401593348.875 2285205 0.16304336788086488% 1832475317.969 2373585 0.12952889333487622% 1840826298.949 2112188 0.11474129857911804% 2014475390.352 2104652 0.10447643143618861% 1730176303.748 1975645 0.11418749613667999% 2016553863.650 2009045 0.099627638825555156% 1891795883.646 2160557 0.11420666567029553% 1881160108.475 1492908 0.079361027978115894% 1562754135.542 1978972 0.12663361145505117% 2061996559.038 2071212 0.10044691834821971% 1519528906.706 2460493 0.16192472477103448% 1796244525.568 2099254 0.1168690548596764% 1998463642.677 1988093 0.099481069234609226% 1872169708.204 1762657 0.094150492462082555% 1664425938.102 1710870 0.10279039522485223% 1791543540.761 1992110 0.11119517637588673% 1883913354.514 1770358 0.093972368514618113% 1813806740.237 1877185 0.10349421238531283% 1547586337.236 2702003 0.17459465329900728% 2020313568.921 2100334 0.10396079263684484% 1727289498.314 2059429 0.1192289423405978% Detailed time after patch: Total add_to_page_cache_lru percent 2151489401.227 6287717 0.29224949918015392% 1919030541.464 6872841 0.3581413037208262% 2277104485.950 8538296 0.37496285535785828% 2142847301.255 7992466 0.37298345968558083% 1909650847.324 6960671 0.36449966808089612% 2109123648.836 6825371 0.32361170497361974% 2128503623.032 7728883 0.36311345286743746% 1925232499.136 7526064 0.39091714914315673% 1935780958.829 7499162 0.38739723964101919% 1722848267.832 7353451 0.42681942091473007% 1855159456.452 7600681 0.40970499724785564% 1862769335.900 8607712 0.46209221045831578% 2272365556.764 6895008 0.30342864419310028% 2049429274.204 7252089 0.35385895435775488% 2001218334.232 8155639 0.4075336938750293% 1947131845.644 7229822 0.37130623774523025% 1982915408.746 7513518 0.37891268416495716% 2038654062.353 7531559 0.36943781385386831% 2134879530.359 6738727 0.31564905205057731% 2029761134.284 7472398 0.36814174208907074% 1956557094.935 7280443 0.37210480690019776% 1740007857.373 6663035 0.38293131676196024% 2054278081.418 7765213 0.37800203732105886% 2367585922.353 7629987 0.32226864199365651% 2023763123.141 7730698 0.38199618876350999% 1826074987.177 7579606 0.41507638258150648% 2077873224.783 7414675 0.35683962387909118% 2103719398.720 7093390 0.33718327664402131% 2164758918.301 7181094 0.33172719323572736% 1953199921.042 7750654 0.39681826302067191% 2179298642.359 6395109 0.29344803303679207% 1971922836.328 7215479 0.36591081897688477% 2225552712.785 8153246 0.36634701812105075% 2124780733.448 7080842 0.33325048032177529% 2139511762.563 8708060 0.40701155059639843% 1934365642.348 6842114 0.35371358186939283% 1950765025.910 6818753 0.34954250816646476% 2013188877.577 6495929 0.32266863146086228% 1921391492.273 6536576 0.34020011154870117% 2164698840.945 6712421 0.31008567441509277% 1992440404.239 7467130 0.3747730664422067% 2073623249.374 7113197 0.34303227465005426% 1938481781.041 6902169 0.35606055561138211% 1963963682.421 7776006 0.39593430721765843% 1807704433.895 7206899 0.39867684477995868% 1902413226.299 7687850 0.40411041585093088% 1718395340.661 7096452 0.41296969516166576% 2014139552.830 7653595 0.37999328245384933% 1976902280.499 7781174 0.3936043818026207% 1920129734.441 6808420 0.3545812492707483% 1786139514.638 7179970 0.4019825966089316% 2011990483.317 6739406 0.33496212113733792% 2186643920.919 7830962 0.35812698743876015% 1822975832.465 8627042 0.47323951565143058% 1872249428.425 7264440 0.38800599373722838% 1971668701.573 6818269 0.34581210294408871% 2054585589.388 7261214 0.35341501651254642% 2252858576.565 7228902 0.32087686618225808% 2196771348.820 6634658 0.30201859668116204% 2224872312.502 6948714 0.31231967609798522% 1924947573.139 6935037 0.360271474235066% 2070207954.999 7564561 0.36540102078796494% 2070702822.858 6994172 0.33776802362912656% 2099826181.510 7199665 0.34286957003377627% 2369037401.585 7009501 0.29587971027009985% 2109093017.803 7056062 0.33455432929886414% 2141046841.968 7831694 0.36578807368835009% 2284785719.942 7358167 0.3220506385249462% 2088247084.213 6857813 0.32840045853982414% 1880913709.753 6697468 0.35607523967059107% 1984586172.943 7361786 0.37094816543455983% 2130320004.839 7840067 0.36802297223850727% 2314059227.236 6669054 0.28819720435443524% 1935408704.712 8309322 0.42933164348025787% 2239440115.241 7040432 0.31438357972087749% 2387500130.769 6555638 0.27458168129559291% 2497500671.323 6969731 0.27906823329532587% 2229438175.095 6759889 0.30321042653322067% 1979317661.013 7870099 0.39761677243723181% 2228213884.202 5883791 0.26405862748257614% 2264526373.743 6563122 0.28982316461838858% 2256376049.198 6670128 0.29561242694323103% 2085817937.654 6878115 0.32975624937505721% 2177225113.484 7421724 0.34087995559282069% 1843473456.551 7156295 0.38819625932607071% 2403022978.094 6958096 0.28955594946157931% 1935191866.634 6872608 0.35513832599730566% 1917810458.850 7816937 0.40759695328220108% 2016838266.381 7257719 0.35985627211562177% 1904575178.166 7484129 0.39295529448235278% 2087232238.930 7372521 0.35321996577532039% 1976631116.176 6438233 0.32571747693901715% 2004191806.805 6735567 0.33607397141980955% 2110550986.328 7174599 0.33993961986592813% 2152621184.889 7337361 0.34085704681840484% 2059135774.936 6363510 0.30903790208772336% 2353978555.486 7265456 0.30864580236160993% 1945677192.325 5927833 0.30466682877217138% 2255676557.335 6379740 0.28283044301074045% 2034627875.756 7319043 0.35972391252530572% 1712556465.847 3079747 0.17983331127577226% 1837380343.831 3111263 0.1693314620702272% 1680363376.083 1611968 0.095929727042585719% 1769978476.954 2017096 0.11396161175198416% 1829700109.543 2612874 0.14280340184559598% 1783959966.875 3184558 0.17851062014460206% 1772032973.967 2133741 0.12041203698502599% 1667688494.152 1985120 0.11903422053705601% 2001252356.720 2633874 0.13161128785961057% 2077009766.270 2858188 0.13761071548223289% 2076612330.379 2340135 0.11269002720276176% 1834812072.536 1713713 0.093399919569494547% 1787949752.795 2522212 0.14106727529994451% 1907464219.876 2476303 0.12982172741153589% 1609254879.065 1903707 0.11829741980375917% 2069557067.911 2484547 0.12005211349440528% 1725151836.363 2491288 0.1444097816486799% 2077004221.561 2508662 0.12078271069254648% 1650748196.246 3195100 0.19355465644403197% 1843881436.725 2731880 0.14815920078094685% 1677080490.297 2752567 0.16412849686853959% 2103777441.563 3252694 0.15461207710181613% 1598451912.768 2345538 0.1467381021139566% 1825835416.807 2381575 0.13043755083713246% 1969692431.120 2198750 0.11162910336969484% 1867823718.088 1813348 0.097083465770326324% 1929972836.031 2140104 0.11088777831718792% 1627140530.277 2519227 0.15482541016731566% 1779407314.725 2828755 0.15897175293095681% 1724839045.836 1937500 0.11232932166496305% 1780135194.997 2889504 0.16231935687361485% 1758590417.053 2193512 0.12473126082853507% 1729351400.188 1523643 0.088104881392778986% 1484255938.207 2153531 0.14509162096406991% 1504352024.282 1910774 0.12701641432044322% 1916441202.247 2423510 0.12645887581411155% 1651813655.113 2892863 0.1751325272705837% 1772411947.023 2693122 0.15194673024651262% 1738795901.180 3064160 0.17622309771495132% 1717902110.376 3266140 0.19012375503078779% 1858583685.387 2246750 0.12088505982619635% 1641867344.242 2901893 0.17674345069209688% 2037933222.333 3290649 0.16146991294606342% 1713754879.753 2136278 0.1246548164640615% 2265307843.106 2195967 0.096939010151886218% 2066343912.900 2117667 0.10248376307446183% 2033259596.459 2652081 0.13043494321230309% 2029016228.457 2447926 0.12064595470789147% 1649943910.454 2243384 0.13596728869302646% 2064977308.315 2517573 0.12191770775700743% 1962826877.902 2403546 0.12245328546596376% 1991037543.226 3214700 0.16145853255942866% 1469646744.644 1960481 0.133398111290676% 2195532272.023 1693642 0.077140382839349028% 1902754342.931 2542547 0.13362455376575119% 1922726134.774 2726990 0.14182935108023245% 1629134454.130 2814497 0.17276026499009955% 1442857977.322 2886065 0.2000241912483062% 1782430811.270 2884583 0.16183421997427802% 1574026949.337 2873023 0.18252692568003068% 2064769936.712 2717133 0.13159495165484839% 1621381781.294 2143854 0.13222388611576869% 1783777994.311 2515565 0.14102455619605617% 1561198792.593 2402227 0.15387066729728466% 1658682002.165 2924639 0.17632306832669586% 1675144757.604 2216513 0.13231769910860314% 1712859849.041 2274046 0.13276310967725691% 1448178253.374 2507727 0.17316424923226392% 1621787692.726 2822681 0.17404750403892047% 1924315582.555 2275728 0.11826168330344308% 2044659318.750 2606738 0.12749008972280165% 1559320878.499 2049522 0.13143683434629996% 1641314354.590 2786145 0.16975084585158451% 1769603624.855 2008994 0.11352790940200608% 1707747444.550 2813289 0.16473682973311757% 1366611645.499 2930513 0.21443641356721807% 1435165128.768 3161655 0.22029903992400404% 1440555681.860 2831258 0.19653929630435177% 1627011278.312 1956565 0.12025515901954331% 1668464384.654 3863649 0.23156916237089648% 1589045506.115 2743558 0.17265446391825656% 1766150748.153 3207045 0.18158387687765917% 1668645748.936 2997211 0.17961937109246526% 1808149919.182 2420007 0.13383884678626659% 1831096162.185 2226869 0.12161398434382248% 1473136553.216 2774496 0.18833936296964501% 1873520917.567 2427200 0.12955286366121929% 1971938578.205 2207736 0.11195764535473715% 1670588149.850 2437810 0.14592525394238479% 1912140400.200 2407058 0.12588291109524352% 1925513187.452 2415130 0.12542786077699639% 1658671061.956 3111210 0.18757245311382492% 1917423750.996 2888924 0.15066695603928745% 1553962205.772 3386946 0.21795549386076499% 1834101490.364 2367281 0.12907033838842713% 1626846627.678 3362957 0.20671629044711806% 1519340210.104 2320735 0.15274623712098975% 1725615314.262 3813557 0.22099693764197714% 1725823077.103 3137784 0.1818137699993643% 1633124107.941 2007344 0.12291435722731486% Thanks, Fengguang -- 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/