[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v1 02/11] xen/xsplice: Hypervisor implementation of XEN_XSPLICE_op
On Tue, Nov 03, 2015 at 06:15:59PM +0000, Ross Lagerwall wrote: > From: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> It is very hard for me to review my own code, but mostly what I see are some quite simple things (really really simple) > diff --git a/xen/common/xsplice.c b/xen/common/xsplice.c > new file mode 100644 > index 0000000..d984c8a > --- /dev/null > +++ b/xen/common/xsplice.c > +struct payload { > + int32_t state; /* One of XSPLICE_STATE_*. */ > + int32_t rc; /* 0 or -EXX. */ > + > + struct list_head list; /* Linked to 'payload_list'. */ > + > + char id[XEN_XSPLICE_NAME_SIZE + 1]; /* Name of it. */ > +}; There is some space between char and id. Actually all of these look like they were at the same indentation but are now a bit off. It would be nice to have them align (the comments) and the space between 'list_head list' and 'char id' shorten. ..snip.. > +int find_payload(xen_xsplice_id_t *id, bool_t need_lock, struct payload **f) > +{ > + struct payload *data; > + XEN_GUEST_HANDLE_PARAM(char) str; > + char name[XEN_XSPLICE_NAME_SIZE + 1] = { 0 }; /* 128 + 1 bytes on stack. > Perhaps kzalloc? */ Jan was not too worried about the kzalloc so I think we can remove the comment. > + int rc = -EINVAL; > + > + rc = verify_id(id); > + if ( rc ) > + return rc; > + > + str = guest_handle_cast(id->name, char); > + if ( copy_from_guest(name, str, id->size) ) > + return -EFAULT; > + > + if ( need_lock ) > + spin_lock(&payload_list_lock); > + > + rc = -ENOENT; > + list_for_each_entry ( data, &payload_list, list ) > + { > + if ( !strcmp(data->id, name) ) > + { > + *f = data; > + rc = 0; > + break; > + } > + } > + > + if ( need_lock ) > + spin_unlock(&payload_list_lock); > + > + return rc; > +} > + > + And we have an extra \n here. .. And besides that I realized that there is some code for which we have CONFIG_ around (lock profile, gcov, kdump?, etc). We should probably make the xSplice code also be guarded by this as well. Ross, I can do these changes easily. Unless you are itching to do it now :-) _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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