Date: Tue, 24 Jan 2006 15:53:41 +0530 From: "Kamal R. Prasad" <kamalp@acm.org> To: Pranav Peshwe <pranavpeshwe@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: Difference between a kthread and an ordinary process. Message-ID: <ac7deb50601240223p3fee9277qbfabc2b5bc90388a@mail.gmail.com> In-Reply-To: <cdfd7d6d0601240121l3a58bf1cg29b608f178bb1098@mail.gmail.com> References: <cdfd7d6d0601240121l3a58bf1cg29b608f178bb1098@mail.gmail.com>
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On 1/24/06, Pranav Peshwe <pranavpeshwe@gmail.com> wrote: [snip] > What is the difference between a kernel thread and a normal process > created using fork ? except the address space sharing with swapper and more than one kernel thread can be associated with a process and they all share the same address space. kernel mode execution of the kthread. Is a kthread effectively just a > process always running in kernel mode ? you mean - effectively just a kernel process? A kernel thread can be associated with one or more userland threads, but a kernel process doesn't have anything associated with it in userspace. Further, more than one kerne= l thread can share a single U area/user address space. When they were first introduced -Sun microsystems referred to kernel threads as light-weight processes, which is what you seem to have concluded. regards -kamal TIA. > > Regards, > Pranav. > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org= " >
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