Commit d3a0b654 authored by Philippe Gerum's avatar Philippe Gerum Committed by Jan Kiszka

cobalt/trace: pipeline: abstract trace calls

Unlike the I-pipe, Dovetail comes with no specific tracer, tracepoints
can be sent to common ftrace-based tracers, with the 'function' tracer
reporting Dovetail-specific information such as the current execution
stage, and the real & virtual interrupt states (hard disabled/enabled,
stalled/unstalled) for the current context.

In other words, ftrace's 'function' tracer with Dovetail is similar to
the I-pipe specific tracer.

Since we can use ftrace through the regular kernel interface with
Dovetail, the legacy trace interface can move to the I-pipe section.

No functional change is introduced.
Signed-off-by: Philippe Gerum's avatarPhilippe Gerum <rpm@xenomai.org>
Signed-off-by: Jan Kiszka's avatarJan Kiszka <jan.kiszka@siemens.com>
parent e702517c
/*
* Copyright (C) 2006 Jan Kiszka <jan.kiszka@web.de>.
*
* Xenomai is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License,
* or (at your option) any later version.
*
* Xenomai is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Xenomai; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef _COBALT_KERNEL_IPIPE_TRACE_H
#define _COBALT_KERNEL_IPIPE_TRACE_H
#include <linux/types.h>
#include <linux/kconfig.h>
#include <linux/ipipe_trace.h>
#include <cobalt/uapi/kernel/trace.h>
static inline int xntrace_max_begin(unsigned long v)
{
ipipe_trace_begin(v);
return 0;
}
static inline int xntrace_max_end(unsigned long v)
{
ipipe_trace_end(v);
return 0;
}
static inline int xntrace_max_reset(void)
{
ipipe_trace_max_reset();
return 0;
}
static inline int xntrace_user_start(void)
{
return ipipe_trace_frozen_reset();
}
static inline int xntrace_user_stop(unsigned long v)
{
ipipe_trace_freeze(v);
return 0;
}
static inline int xntrace_user_freeze(unsigned long v, int once)
{
int ret = 0;
if (!once)
ret = ipipe_trace_frozen_reset();
ipipe_trace_freeze(v);
return ret;
}
static inline int xntrace_special(unsigned char id, unsigned long v)
{
ipipe_trace_special(id, v);
return 0;
}
static inline int xntrace_special_u64(unsigned char id,
unsigned long long v)
{
ipipe_trace_special(id, (unsigned long)(v >> 32));
ipipe_trace_special(id, (unsigned long)(v & 0xFFFFFFFF));
return 0;
}
static inline int xntrace_pid(pid_t pid, short prio)
{
ipipe_trace_pid(pid, prio);
return 0;
}
static inline int xntrace_tick(unsigned long delay_ticks)
{
ipipe_trace_event(0, delay_ticks);
return 0;
}
static inline int xntrace_panic_freeze(void)
{
ipipe_trace_panic_freeze();
return 0;
}
static inline int xntrace_panic_dump(void)
{
ipipe_trace_panic_dump();
return 0;
}
static inline bool xntrace_enabled(void)
{
return IS_ENABLED(CONFIG_IPIPE_TRACE);
}
#endif /* !_COBALT_KERNEL_IPIPE_TRACE_H */
/*
* Copyright (C) 2006 Jan Kiszka <jan.kiszka@web.de>.
*
* Xenomai is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License,
* or (at your option) any later version.
*
* Xenomai is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Xenomai; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
* SPDX-License-Identifier: GPL-2.0
*/
#ifndef _COBALT_KERNEL_TRACE_H
#define _COBALT_KERNEL_TRACE_H
#include <linux/types.h>
#include <linux/ipipe_trace.h>
#include <cobalt/uapi/kernel/trace.h>
static inline int xntrace_max_begin(unsigned long v)
{
ipipe_trace_begin(v);
return 0;
}
static inline int xntrace_max_end(unsigned long v)
{
ipipe_trace_end(v);
return 0;
}
static inline int xntrace_max_reset(void)
{
ipipe_trace_max_reset();
return 0;
}
static inline int xntrace_user_start(void)
{
return ipipe_trace_frozen_reset();
}
static inline int xntrace_user_stop(unsigned long v)
{
ipipe_trace_freeze(v);
return 0;
}
static inline int xntrace_user_freeze(unsigned long v, int once)
{
int ret = 0;
if (!once)
ret = ipipe_trace_frozen_reset();
ipipe_trace_freeze(v);
return ret;
}
static inline int xntrace_special(unsigned char id, unsigned long v)
{
ipipe_trace_special(id, v);
return 0;
}
static inline int xntrace_special_u64(unsigned char id,
unsigned long long v)
{
ipipe_trace_special(id, (unsigned long)(v >> 32));
ipipe_trace_special(id, (unsigned long)(v & 0xFFFFFFFF));
return 0;
}
static inline int xntrace_pid(pid_t pid, short prio)
{
ipipe_trace_pid(pid, prio);
return 0;
}
static inline int xntrace_tick(unsigned long delay_ticks)
{
ipipe_trace_event(0, delay_ticks);
return 0;
}
static inline int xntrace_panic_freeze(void)
{
ipipe_trace_panic_freeze();
return 0;
}
static inline int xntrace_panic_dump(void)
{
ipipe_trace_panic_dump();
return 0;
}
#include <pipeline/trace.h>
#endif /* !_COBALT_KERNEL_TRACE_H */
......@@ -19,7 +19,7 @@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/semaphore.h>
#include <linux/ipipe_trace.h>
#include <cobalt/kernel/trace.h>
#include <cobalt/kernel/arith.h>
#include <rtdm/testing.h>
#include <rtdm/driver.h>
......@@ -78,13 +78,13 @@ static void eval_inner_loop(struct rt_tmbench_context *ctx, __s32 dt)
ctx->curr.min = dt;
ctx->curr.avg += dt;
#ifdef CONFIG_IPIPE_TRACE
if (ctx->freeze_max && (dt > ctx->result.overall.max) && !ctx->warmup) {
ipipe_trace_frozen_reset();
ipipe_trace_freeze(dt);
if (xntrace_enabled() &&
ctx->freeze_max &&
(dt > ctx->result.overall.max) &&
!ctx->warmup) {
xntrace_user_freeze(dt, false);
ctx->result.overall.max = dt;
}
#endif /* CONFIG_IPIPE_TRACE */
ctx->date += ctx->period;
......
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