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| author | Thomas Gleixner | 2017-08-28 08:47:21 +0200 |
|---|---|---|
| committer | Ingo Molnar | 2017-08-29 11:42:23 +0200 |
| commit | 2feb1b316d48004d905278c02a55902cab0be8be (patch) | |
| tree | e34696f4142dfd9366473a96612398da48bce30d /arch/x86/include/asm/trace/irq_vectors.h | |
| parent | x86/boot: Move EISA setup to a separate file (diff) | |
| download | kernel-qcow2-linux-2feb1b316d48004d905278c02a55902cab0be8be.tar.gz kernel-qcow2-linux-2feb1b316d48004d905278c02a55902cab0be8be.tar.xz kernel-qcow2-linux-2feb1b316d48004d905278c02a55902cab0be8be.zip | |
x86/tracing: Introduce a static key for exception tracing
Switching the IDT just for avoiding tracepoints creates a completely
impenetrable macro/inline/ifdef mess.
There is no point in avoiding tracepoints for most of the traps/exceptions.
For the more expensive tracepoints, like pagefaults, this can be handled with
an explicit static key.
Preparatory patch to remove the tracing IDT.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/20170828064956.593094539@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/trace/irq_vectors.h')
| -rw-r--r-- | arch/x86/include/asm/trace/irq_vectors.h | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/x86/include/asm/trace/irq_vectors.h b/arch/x86/include/asm/trace/irq_vectors.h index 32dd6a9e343c..7825b4426e7e 100644 --- a/arch/x86/include/asm/trace/irq_vectors.h +++ b/arch/x86/include/asm/trace/irq_vectors.h @@ -5,9 +5,7 @@ #define _TRACE_IRQ_VECTORS_H #include <linux/tracepoint.h> - -extern int trace_irq_vector_regfunc(void); -extern void trace_irq_vector_unregfunc(void); +#include <asm/trace/common.h> DECLARE_EVENT_CLASS(x86_irq_vector, |