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{
    "id": 818938,
    "url": "http://patchwork.ozlabs.org/api/covers/818938/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/sparclinux/cover/1506491952-9659-1-git-send-email-vijay.ac.kumar@oracle.com/",
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        "name": "Linux SPARC Development ",
        "link_name": "sparclinux",
        "list_id": "sparclinux.vger.kernel.org",
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    "msgid": "<1506491952-9659-1-git-send-email-vijay.ac.kumar@oracle.com>",
    "list_archive_url": null,
    "date": "2017-09-27T05:59:10",
    "name": "[0/2] sparc64: Optimize fls, fls64 and __fls",
    "submitter": {
        "id": 67939,
        "url": "http://patchwork.ozlabs.org/api/people/67939/?format=api",
        "name": "Vijay Kumar",
        "email": "vijay.ac.kumar@oracle.com"
    },
    "mbox": "http://patchwork.ozlabs.org/project/sparclinux/cover/1506491952-9659-1-git-send-email-vijay.ac.kumar@oracle.com/mbox/",
    "series": [
        {
            "id": 5285,
            "url": "http://patchwork.ozlabs.org/api/series/5285/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/sparclinux/list/?series=5285",
            "date": "2017-09-27T05:59:11",
            "name": "sparc64: Optimize fls, fls64 and __fls",
            "version": 1,
            "mbox": "http://patchwork.ozlabs.org/series/5285/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/covers/818938/comments/",
    "headers": {
        "Return-Path": "<sparclinux-owner@vger.kernel.org>",
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        ],
        "From": "Vijay Kumar <vijay.ac.kumar@oracle.com>",
        "To": "davem@davemloft.net",
        "Cc": "linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org,\n\tbabu.moger@oracle.com",
        "Subject": "[PATCH 0/2] sparc64: Optimize fls, fls64 and __fls",
        "Date": "Tue, 26 Sep 2017 23:59:10 -0600",
        "Message-Id": "<1506491952-9659-1-git-send-email-vijay.ac.kumar@oracle.com>",
        "X-Mailer": "git-send-email 1.7.1",
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        "List-ID": "<sparclinux.vger.kernel.org>",
        "X-Mailing-List": "sparclinux@vger.kernel.org"
    },
    "content": "SPARC provides lzcnt instruction (with VIS3) which can be used to\noptimize fls, fls64 and __fls functions. For the systems that supports \nlzcnt instruction, we now do boot time patching to use sparc\noptimized fls, fls64 and __fls functions.\n  \nVijay Kumar (2):\n  sparc64: Define SPARC default fls and __fls\n  sparc64: Use lzcnt instruction for fls and __fls\n\n arch/sparc/Makefile                |    1 +\n arch/sparc/include/asm/bitops_64.h |    7 +-\n arch/sparc/kernel/head_64.S        |    2 +\n arch/sparc/lib/Makefile            |    4 +\n arch/sparc/lib/NG4fls.S            |   31 +++++++++\n arch/sparc/lib/NG4patch.S          |    9 +++\n arch/sparc/lib/fls.S               |  126 ++++++++++++++++++++++++++++++++++++\n 7 files changed, 177 insertions(+), 3 deletions(-)\n create mode 100644 arch/sparc/lib/NG4fls.S\n create mode 100644 arch/sparc/lib/fls.S\n\n--\nTo unsubscribe from this list: send the line \"unsubscribe sparclinux\" in\nthe body of a message to majordomo@vger.kernel.org\nMore majordomo info at  http://vger.kernel.org/majordomo-info.html"
}