Date: Fri, 30 Mar 2012 15:36:10 +0200 From: Giovanni Trematerra <gianni@freebsd.org> To: Mahesh Babu <maheshbabu90@yahoo.co.in> Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: Context Switch Message-ID: <CACfq09232Vj5JEdZa=2YUnX%2BpXGD7EcoDA0sHQ%2BPfeyjdZT%2B_g@mail.gmail.com> In-Reply-To: <1333041495.92141.YahooMailNeo@web193201.mail.sg3.yahoo.com> References: <1333041495.92141.YahooMailNeo@web193201.mail.sg3.yahoo.com>
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On Thu, Mar 29, 2012 at 7:18 PM, Mahesh Babu <maheshbabu90@yahoo.co.in> wrote: > Which part of the source code in FreeBSD 9 is responsible for making context switching i.e. storing and restoring the process state. > Context switch is split up in machine indipendent code (MI Code) and machine dependent code (MD Code) For MI part take a look at mi_switch in sys/kern/kern_sync.c sched_switch in sys/kern/sched_ule.c and sys/kern_4bsd.c depending on configurated scheduler in the kernel config file. For MD part search for symbol cpu_switch inside the specific arch directory. -- Gianni
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