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x86/irq: Get rid of the 'first_system_vector' indirection bogosity

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This variable is beyond pointless. Nothing allocates a vector via
alloc_gate() below FIRST_SYSTEM_VECTOR. So nothing can change
first_system_vector.

If there is a need for a gate below FIRST_SYSTEM_VECTOR then it can be
added to the vector defines and FIRST_SYSTEM_VECTOR can be adjusted
accordingly.

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/20170828064956.357109735@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Thomas Gleixner
2017-08-28 08:47:18 +02:00
committed by Ingo Molnar
parent fa4ab5774d
commit 05161b9cbe
5 changed files with 5 additions and 11 deletions
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2
arch/x86/kernel/apic/vector.c
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@@ -166,7 +166,7 @@ static int __assign_irq_vector(int irq, struct apic_chip_data *d,
offset = current_offset;
next:
vector += 16;
if (vector >= first_system_vector) {
if (vector >= FIRST_SYSTEM_VECTOR) {
offset = (offset + 1) % 16;
vector = FIRST_EXTERNAL_VECTOR + offset;
}