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authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2010-12-16 14:33:27 -0800
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>2011-07-18 15:43:26 -0700
commitc796f213a6934712ede728d9b53ef0e5066db23a (patch)
tree30fffcabfad42297b2d4b1f455a5f88ccf91091b /arch/x86/include/asm
parentf04e2ee41d3dbeb6eeb3685d1b4c208b898e278f (diff)
xen/trace: add multicall tracing
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Diffstat (limited to 'arch/x86/include/asm')
-rw-r--r--arch/x86/include/asm/xen/hypercall.h22
-rw-r--r--arch/x86/include/asm/xen/trace_types.h18
2 files changed, 40 insertions, 0 deletions
diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h
index d240ea950519..417777de5a40 100644
--- a/arch/x86/include/asm/xen/hypercall.h
+++ b/arch/x86/include/asm/xen/hypercall.h
@@ -39,6 +39,8 @@
#include <linux/string.h>
#include <linux/types.h>
+#include <trace/events/xen.h>
+
#include <asm/page.h>
#include <asm/pgtable.h>
@@ -459,6 +461,8 @@ MULTI_fpu_taskswitch(struct multicall_entry *mcl, int set)
{
mcl->op = __HYPERVISOR_fpu_taskswitch;
mcl->args[0] = set;
+
+ trace_xen_mc_entry(mcl, 1);
}
static inline void
@@ -475,6 +479,8 @@ MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
mcl->args[2] = new_val.pte >> 32;
mcl->args[3] = flags;
}
+
+ trace_xen_mc_entry(mcl, sizeof(new_val) == sizeof(long) ? 3 : 4);
}
static inline void
@@ -485,6 +491,8 @@ MULTI_grant_table_op(struct multicall_entry *mcl, unsigned int cmd,
mcl->args[0] = cmd;
mcl->args[1] = (unsigned long)uop;
mcl->args[2] = count;
+
+ trace_xen_mc_entry(mcl, 3);
}
static inline void
@@ -504,6 +512,8 @@ MULTI_update_va_mapping_otherdomain(struct multicall_entry *mcl, unsigned long v
mcl->args[3] = flags;
mcl->args[4] = domid;
}
+
+ trace_xen_mc_entry(mcl, sizeof(new_val) == sizeof(long) ? 4 : 5);
}
static inline void
@@ -520,6 +530,8 @@ MULTI_update_descriptor(struct multicall_entry *mcl, u64 maddr,
mcl->args[2] = desc.a;
mcl->args[3] = desc.b;
}
+
+ trace_xen_mc_entry(mcl, sizeof(maddr) == sizeof(long) ? 2 : 4);
}
static inline void
@@ -528,6 +540,8 @@ MULTI_memory_op(struct multicall_entry *mcl, unsigned int cmd, void *arg)
mcl->op = __HYPERVISOR_memory_op;
mcl->args[0] = cmd;
mcl->args[1] = (unsigned long)arg;
+
+ trace_xen_mc_entry(mcl, 2);
}
static inline void
@@ -539,6 +553,8 @@ MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
mcl->args[1] = count;
mcl->args[2] = (unsigned long)success_count;
mcl->args[3] = domid;
+
+ trace_xen_mc_entry(mcl, 4);
}
static inline void
@@ -550,6 +566,8 @@ MULTI_mmuext_op(struct multicall_entry *mcl, struct mmuext_op *op, int count,
mcl->args[1] = count;
mcl->args[2] = (unsigned long)success_count;
mcl->args[3] = domid;
+
+ trace_xen_mc_entry(mcl, 4);
}
static inline void
@@ -558,6 +576,8 @@ MULTI_set_gdt(struct multicall_entry *mcl, unsigned long *frames, int entries)
mcl->op = __HYPERVISOR_set_gdt;
mcl->args[0] = (unsigned long)frames;
mcl->args[1] = entries;
+
+ trace_xen_mc_entry(mcl, 2);
}
static inline void
@@ -567,6 +587,8 @@ MULTI_stack_switch(struct multicall_entry *mcl,
mcl->op = __HYPERVISOR_stack_switch;
mcl->args[0] = ss;
mcl->args[1] = esp;
+
+ trace_xen_mc_entry(mcl, 2);
}
#endif /* _ASM_X86_XEN_HYPERCALL_H */
diff --git a/arch/x86/include/asm/xen/trace_types.h b/arch/x86/include/asm/xen/trace_types.h
new file mode 100644
index 000000000000..21e1874c0a0b
--- /dev/null
+++ b/arch/x86/include/asm/xen/trace_types.h
@@ -0,0 +1,18 @@
+#ifndef _ASM_XEN_TRACE_TYPES_H
+#define _ASM_XEN_TRACE_TYPES_H
+
+enum xen_mc_flush_reason {
+ XEN_MC_FL_NONE, /* explicit flush */
+ XEN_MC_FL_BATCH, /* out of hypercall space */
+ XEN_MC_FL_ARGS, /* out of argument space */
+ XEN_MC_FL_CALLBACK, /* out of callback space */
+};
+
+enum xen_mc_extend_args {
+ XEN_MC_XE_OK,
+ XEN_MC_XE_BAD_OP,
+ XEN_MC_XE_NO_SPACE
+};
+typedef void (*xen_mc_callback_fn_t)(void *);
+
+#endif /* _ASM_XEN_TRACE_TYPES_H */

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