On Wed, 13 Sep 2023 13:38:27 +0200
Juergen Gross <jgross@xxxxxxxx> wrote:
> diff --git a/include/trace/events/xen.h b/include/trace/events/xen.h
> index 44a3f565264d..0577f0cdd231 100644
> --- a/include/trace/events/xen.h
> +++ b/include/trace/events/xen.h
> @@ -6,26 +6,26 @@
> #define _TRACE_XEN_H
>
> #include <linux/tracepoint.h>
> -#include <asm/paravirt_types.h>
> +#include <asm/xen/hypervisor.h>
> #include <asm/xen/trace_types.h>
>
> struct multicall_entry;
>
> /* Multicalls */
> DECLARE_EVENT_CLASS(xen_mc__batch,
> - TP_PROTO(enum paravirt_lazy_mode mode),
> + TP_PROTO(enum xen_lazy_mode mode),
> TP_ARGS(mode),
> TP_STRUCT__entry(
> - __field(enum paravirt_lazy_mode, mode)
> + __field(enum xen_lazy_mode, mode)
> ),
> TP_fast_assign(__entry->mode = mode),
> TP_printk("start batch LAZY_%s",
> - (__entry->mode == PARAVIRT_LAZY_MMU) ? "MMU" :
> - (__entry->mode == PARAVIRT_LAZY_CPU) ? "CPU" : "NONE")
> + (__entry->mode == XEN_LAZY_MMU) ? "MMU" :
> + (__entry->mode == XEN_LAZY_CPU) ? "CPU" : "NONE")
There's helper functions that make the above easier to implement as well as
exports the symbols so that user space can parse this better:
TRACE_DEFINE_ENUM(XEN_LAZY_NONE);
TRACE_DEFINE_ENUM(XEN_LAZY_MMU);
TRACE_DEFINE_ENUM(XEN_LAZY_CPU);
[..]
TP_printk("start batch LAZY_%s",
__print_symbolic(mode,
{ XEN_LAZY_NONE, "NONE" },
{ XEN_LAZY_MMU, "MMU },
{ XEN_LAZY_CPU, "CPU" }))
Then user space parsers that read the raw data can convert these events
into something humans can read.
-- Steve
> );
> #define DEFINE_XEN_MC_BATCH(name) \
> DEFINE_EVENT(xen_mc__batch, name, \
> - TP_PROTO(enum paravirt_lazy_mode mode), \
> + TP_PROTO(enum xen_lazy_mode mode), \
> TP_ARGS(mode))
>
> DEFINE_XEN_MC_BATCH(xen_mc_batch);
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