x86/traps: Simplify pagefault tracing logic

Browse source

Make use of the new irqvector tracing static key and remove the duplicated
trace_do_pagefault() implementation.

If irq vector tracing is disabled, then the overhead of this is a single
NOP5, which is a reasonable tradeoff to avoid duplicated code and the
unholy macro mess.

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/20170828064956.672965407@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

...

This commit is contained in:

Thomas Gleixner 2017-08-28 08:47:22 +02:00 • committed by Ingo Molnar

parent 2feb1b316d

commit 11a7ffb017

5 changed files with 16 additions and 66 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

8

arch/x86/entry/entry_32.S

View file

13

arch/x86/entry/entry_64.S

View file

10

arch/x86/include/asm/traps.h

View file

2

arch/x86/kernel/kvm.c

View file

49

arch/x86/mm/fault.c

View file