{"id":769492,"url":"http://patchwork.ozlabs.org/api/1.2/patches/769492/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20170601053440.28976-3-rashmica.g@gmail.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/1.2/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"<20170601053440.28976-3-rashmica.g@gmail.com>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/20170601053440.28976-3-rashmica.g@gmail.com/","date":"2017-06-01T05:34:40","name":"[v3,3/3] Add documentation for the powerpc memtrace debugfs files","commit_ref":"1f84c2624a2d75c9f69214ed83f11dd30a8ae83d","pull_url":null,"state":"accepted","archived":false,"hash":"58380bdba7af3f08b242868bb017d66355c20f1c","submitter":{"id":71056,"url":"http://patchwork.ozlabs.org/api/1.2/people/71056/?format=json","name":"Rashmica Gupta","email":"rashmica.g@gmail.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20170601053440.28976-3-rashmica.g@gmail.com/mbox/","series":[],"comments":"http://patchwork.ozlabs.org/api/patches/769492/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/769492/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":["patchwork-incoming@ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":["patchwork-incoming@ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Received":["from lists.ozlabs.org (lists.ozlabs.org [103.22.144.68])\n\t(using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3wdbkp5V0mz9s89\n\tfor ;\n\tThu, 1 Jun 2017 15:39:30 +1000 (AEST)","from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 3wdbkp4QXfzDqJ6\n\tfor ;\n\tThu, 1 Jun 2017 15:39:30 +1000 (AEST)","from mail-pf0-x241.google.com (mail-pf0-x241.google.com\n\t[IPv6:2607:f8b0:400e:c00::241])\n\t(using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128\n\tbits)) (No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 3wdbdd6xRpzDqGr\n\tfor ;\n\tThu, 1 Jun 2017 15:35:01 +1000 (AEST)","by mail-pf0-x241.google.com with SMTP id n23so6515997pfb.3\n\tfor ;\n\tWed, 31 May 2017 22:35:01 -0700 (PDT)","from rashmica.ozlabs.ibm.com ([122.99.82.10])\n\tby smtp.gmail.com with ESMTPSA id\n\tt17sm29353697pfj.61.2017.05.31.22.34.56\n\t(version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);\n\tWed, 31 May 2017 22:34:59 -0700 (PDT)"],"Authentication-Results":["ozlabs.org; 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This can only\nbe used on powernv platforms.\n\nSigned-off-by: Rashmica Gupta \n---\n Documentation/ABI/testing/ppc-memtrace | 45 ++++++++++++++++++++++++++++++++++\n 1 file changed, 45 insertions(+)\n create mode 100644 Documentation/ABI/testing/ppc-memtrace","diff":"diff --git a/Documentation/ABI/testing/ppc-memtrace b/Documentation/ABI/testing/ppc-memtrace\nnew file mode 100644\nindex 0000000..f7eff02\n--- /dev/null\n+++ b/Documentation/ABI/testing/ppc-memtrace\n@@ -0,0 +1,45 @@\n+What:\t\t/sys/kernel/debug/powerpc/memtrace\n+Date:\t\tMay 2017\n+KernelVersion:\t4.13?\n+Contact:\tlinuxppc-dev@lists.ozlabs.org\n+Description:\tThis folder contains the relevant debugfs files for the\n+\t\thardware trace macro to use. CONFIG_PPC64_HARDWARE_TRACING\n+\t\tmust be set.\n+\n+What:\t\t/sys/kernel/debug/powerpc/memtrace/enable\n+Date:\t\tMay 2017\n+KernelVersion:\t4.13?\n+Contact:\tlinuxppc-dev@lists.ozlabs.org\n+Description:\tWrite an integer containing the size of the memory you want\n+\t\tremoved from each NUMA node to this file - it must be\n+\t\taligned to the memblock size. This amount of RAM will be\n+\t\tremoved from the kernel mappings and the following debugfs\n+\t\tfiles will be created. This can only be successfully done\n+\t\tonce per boot. Once memory is successfully removed from\n+\t\teach node, the following files are created.\n+\n+What:\t\t/sys/kernel/debug/powerpc/memtrace/\n+Date:\t\tMay 2017\n+KernelVersion:\t4.13?\n+Contact:\tlinuxppc-dev@lists.ozlabs.org\n+Description:\tThis directory contains information about the removed memory\n+\t\tfrom the specific NUMA node.\n+\n+What:\t\t/sys/kernel/debug/powerpc/memtrace//size\n+Date:\t\tMay 2017\n+KernelVersion:\t4.13?\n+Contact:\tlinuxppc-dev@lists.ozlabs.org\n+Description:\tThis contains the size of the memory removed from the node.\n+\n+What:\t\t/sys/kernel/debug/powerpc/memtrace//start\n+Date:\t\tMay 2017\n+KernelVersion:\t4.13?\n+Contact:\tlinuxppc-dev@lists.ozlabs.org\n+Description:\tThis contains the start address of the removed memory.\n+\n+What:\t\t/sys/kernel/debug/powerpc/memtrace//trace\n+Date:\t\tMay 2017\n+KernelVersion:\t4.13?\n+Contact:\tlinuxppc-dev@lists.ozlabs.org\n+Description:\tThis is where the hardware trace macro will output the trace\n+\t\tit generates.\n","prefixes":["v3","3/3"]}