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| author | David Vrabel <david.vrabel@citrix.com> | 2012-10-03 11:11:35 +0100 |
|---|---|---|
| committer | David Vrabel <david.vrabel@citrix.com> | 2012-10-03 11:11:35 +0100 |
| commit | caf512bef7b2801c7f11c924b9bdfb8c0840fbe2 (patch) | |
| tree | 2779aa6b25e6005c8f8761d30af3d4404bde1160 /xen/common/compat | |
| parent | 86b35acb001f977eb1f82df6c07edaef173f4232 (diff) | |
| download | xen-caf512bef7b2801c7f11c924b9bdfb8c0840fbe2.tar.gz xen-caf512bef7b2801c7f11c924b9bdfb8c0840fbe2.tar.bz2 xen-caf512bef7b2801c7f11c924b9bdfb8c0840fbe2.zip | |
trace: trace hypercalls inside a multicall
Add a trace record for every hypercall inside a multicall. These use
a new event ID (with a different sub-class ) so they may be filtered
out if only the calls into hypervisor are of interest.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Acked-by: George Dunlap <george.dunlap@citrix.com>
Committed-by: Keir Fraser <keir@xen.org>
Diffstat (limited to 'xen/common/compat')
| -rw-r--r-- | xen/common/compat/multicall.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/xen/common/compat/multicall.c b/xen/common/compat/multicall.c index 0eb1212772..e7e2a40eb4 100644 --- a/xen/common/compat/multicall.c +++ b/xen/common/compat/multicall.c @@ -5,6 +5,7 @@ #include <xen/config.h> #include <xen/types.h> #include <xen/multicall.h> +#include <xen/trace.h> #define COMPAT typedef int ret_t; @@ -25,6 +26,17 @@ DEFINE_XEN_GUEST_HANDLE(multicall_entry_compat_t); #define do_multicall(l, n) compat_multicall(_##l, n) #define _XEN_GUEST_HANDLE(t) XEN_GUEST_HANDLE(t) +static void __trace_multicall_call(multicall_entry_t *call) +{ + unsigned long args[6]; + int i; + + for ( i = 0; i < ARRAY_SIZE(args); i++ ) + args[i] = call->args[i]; + + __trace_hypercall(TRC_PV_HYPERCALL_SUBCALL, call->op, args); +} + #include "../multicall.c" /* |