Date: Wed, 23 Dec 2009 06:52:12 +0000 (UTC) From: Marcel Moolenaar <marcel@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r200891 - head/sys/sparc64/sparc64 Message-ID: <200912230652.nBN6qCRa088827@svn.freebsd.org>
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Author: marcel Date: Wed Dec 23 06:52:12 2009 New Revision: 200891 URL: http://svn.freebsd.org/changeset/base/200891 Log: Calculate the average CPU clock frequency and export that through the hw.freq.cpu sysctl variable. This can be used by ports that need to know "the" CPU frequency. Modified: head/sys/sparc64/sparc64/identcpu.c Modified: head/sys/sparc64/sparc64/identcpu.c ============================================================================== --- head/sys/sparc64/sparc64/identcpu.c Wed Dec 23 05:15:40 2009 (r200890) +++ head/sys/sparc64/sparc64/identcpu.c Wed Dec 23 06:52:12 2009 (r200891) @@ -27,6 +27,13 @@ static char cpu_model[128]; SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD, cpu_model, 0, "Machine model"); +SYSCTL_NODE(_hw, OID_AUTO, freq, CTLFLAG_RD, 0, ""); + +static u_int cpu_count; +static u_int cpu_freq; +SYSCTL_UINT(_hw_freq, OID_AUTO, cpu, CTLFLAG_RD, &cpu_freq, 0, + "CPU clock frequency"); + int cpu_impl; void @@ -104,4 +111,11 @@ cpu_identify(u_long vers, u_int freq, u_ printf(" mask=0x%lx maxtl=%ld maxwin=%ld\n", VER_MASK(vers), VER_MAXTL(vers), VER_MAXWIN(vers)); } + + /* + * Calculate the average CPU frequency. + */ + freq = (freq + 500000ul) / 1000000ul; + cpu_freq = (cpu_freq * cpu_count + freq) / (cpu_count + 1); + cpu_count++; }
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