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authorAlex Zeffertt <alex.zeffertt@eu.citrix.com>2009-01-07 18:07:11 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-08 08:30:59 -0800
commit1107ba885e46964316c083d441d5dd185b6c9e49 (patch)
tree98cc3f81ad7ff554e10fc263abfb7727a438cc5a /drivers/xen/xenbus/xenbus_xs.c
parentd8220347da2a0639f5e1919a5af08f49cb37c24f (diff)
downloadop-kernel-dev-1107ba885e46964316c083d441d5dd185b6c9e49.zip
op-kernel-dev-1107ba885e46964316c083d441d5dd185b6c9e49.tar.gz
xen: add xenfs to allow usermode <-> Xen interaction
The xenfs filesystem exports various interfaces to usermode. Initially this exports a file to allow usermode to interact with xenbus/xenstore. Traditionally this appeared in /proc/xen. Rather than extending procfs, this patch adds a backward-compat mountpoint on /proc/xen, and provides a xenfs filesystem which can be mounted there. Signed-off-by: Alex Zeffertt <alex.zeffertt@eu.citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/xen/xenbus/xenbus_xs.c')
-rw-r--r--drivers/xen/xenbus/xenbus_xs.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/xen/xenbus/xenbus_xs.c b/drivers/xen/xenbus/xenbus_xs.c
index 7f2f91c..e325eab 100644
--- a/drivers/xen/xenbus/xenbus_xs.c
+++ b/drivers/xen/xenbus/xenbus_xs.c
@@ -184,6 +184,7 @@ void *xenbus_dev_request_and_reply(struct xsd_sockmsg *msg)
return ret;
}
+EXPORT_SYMBOL(xenbus_dev_request_and_reply);
/* Send message to xs, get kmalloc'ed reply. ERR_PTR() on error. */
static void *xs_talkv(struct xenbus_transaction t,
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