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tracing: always define trace_{irq,preempt}_{enable_disable} 

We get a build error in the irqsoff tracer in some configurations:

kernel/trace/trace_irqsoff.c: In function 'trace_preempt_on':
kernel/trace/trace_irqsoff.c:855:2: error: implicit declaration of function 'trace_preempt_enable_rcuidle'; did you mean 'trace_irq_enable_rcuidle'? [-Werror=implicit-function-declaration]
  trace_preempt_enable_rcuidle(a0, a1);

The problem is that trace_preempt_enable_rcuidle() has different
definition based on multiple Kconfig symbols, but not all combinations
have a valid definition.

This changes the conditions so that we always get exactly one
definition of each of the four tracing macros. I have not tried
to verify that these definitions are sensible, but now we
can build all randconfig combinations again.

Link: http://lkml.kernel.org/r/20171019083230.2450779-1-arnd@arndb.de

Fixes: d59158162e ("tracing: Add support for preempt and irq enable/disable events")
Acked-by: Joel Fernandes <joelaf@google.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Arnd Bergmann 2017-10-19 10:32:13 +02:00 committed by Steven Rostedt (VMware)
parent 5a93bae2c3
commit 250d0c7754
1 changed files with 7 additions and 4 deletions
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11
include/trace/events/preemptirq.h
View File

@ -56,15 +56,18 @@ DEFINE_EVENT(preemptirq_template, preempt_enable,
#include <trace/define_trace.h>
#else /* !CONFIG_PREEMPTIRQ_EVENTS */
#endif /* !CONFIG_PREEMPTIRQ_EVENTS */
#if !defined(CONFIG_PREEMPTIRQ_EVENTS) || defined(CONFIG_PROVE_LOCKING)
#define trace_irq_enable(...)
#define trace_irq_disable(...)
#define trace_preempt_enable(...)
#define trace_preempt_disable(...)
#define trace_irq_enable_rcuidle(...)
#define trace_irq_disable_rcuidle(...)
#endif
#if !defined(CONFIG_PREEMPTIRQ_EVENTS) || !defined(CONFIG_DEBUG_PREEMPT)
#define trace_preempt_enable(...)
#define trace_preempt_disable(...)
#define trace_preempt_enable_rcuidle(...)
#define trace_preempt_disable_rcuidle(...)
#endif