Date: Tue, 07 Feb 2017 09:55:25 -0800 From: John Baldwin <jhb@freebsd.org> To: Edward Tomasz Napierala <trasz@freebsd.org> Cc: Konstantin Belousov <kostikbel@gmail.com>, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r313352 - in head/sys: compat/cloudabi compat/freebsd32 compat/linux vm Message-ID: <3460210.7qRYCLqZx1@ralph.baldwin.cx> In-Reply-To: <20170207125508.GA62670@brick> References: <201702062057.v16KvCtI069664@repo.freebsd.org> <20170207083909.GX2092@kib.kiev.ua> <20170207125508.GA62670@brick>
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On Tuesday, February 07, 2017 12:55:08 PM Edward Tomasz Napierala wrote: > On 0207T1039, Konstantin Belousov wrote: > > On Mon, Feb 06, 2017 at 03:03:11PM -0800, John Baldwin wrote: > > > On Monday, February 06, 2017 08:57:12 PM Edward Tomasz Napierala wrote: > > > > Author: trasz > > > > Date: Mon Feb 6 20:57:12 2017 > > > > New Revision: 313352 > > > > URL: https://svnweb.freebsd.org/changeset/base/313352 > > > > > > > > Log: > > > > Add kern_vm_mmap2(), kern_vm_mprotect(), kern_vm_msync(), kern_vm_munlock(), > > > > kern_vm_munmap(), and kern_vm_madvise(), and use them in various compats > > > > instead of their sys_*() counterparts. > > > > > > > > Reviewed by: ed, dchagin, kib > > > > MFC after: 2 weeks > > > > Sponsored by: DARPA, AFRL > > > > Differential Revision: https://reviews.freebsd.org/D9378 > > > > > > I know kib@ suggested kern_vm_<foo> instead of the vm_<foo> you had suggested, > > > but just kern_<foo> would be more consistent. That is what we have done with > > > every other system call. (e.g. there isn't kern_socket_bind, kern_socket_listen, > > > etc., but just kern_bind() and kern_listen()). > > > > Note that the kern_vm_* functions are not quite regular syscall helpers. > > The big issue with them, which caused my suggestion, is that the > > functions cannot be declared in sys/syscallsubr.h, because their > > declarations depend on the vm/*.h namespace. > > Exactly; they use vm-specific types (vm_offset_t, for example). And I > wanted to avoid changing the types all over the place, at least for now. You would only need <vm/vm.h> though right? None of the actual objects are used, just things like vm_prot_t? OTOH, kern_* is currently only used for things that are syscall implementations and generally take syscall arguments directly (or close approximations of syscall arguments). It is annoying to lose the consistency in meaning. -- John Baldwin
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