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x86-64: Reduce amount of redundant code generated for invalidate_interruptNN

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Previously these up to 32 entry points, consisting of all the
same code except for their very first instruction, consumed 0x70
bytes per instance. Just like for device interrupt entry points,
fold them together so that they all use a single instance of the
code after having pushed their vector indicator (resulting in
0x10 bytes per instance, to retain 16-byte alignment of the
individual entry points).

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/4ED4CA230200007800064065@nat28.tlf.novell.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Jan Beulich 2011-11-29 11:03:46 +00:00 committed by Ingo Molnar
parent 70ea6855d3
commit 39e9543344
1 changed files with 12 additions and 3 deletions
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15
arch/x86/kernel/entry_64.S
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@ -951,6 +951,7 @@ END(common_interrupt)
ENTRY(\sym) ENTRY(\sym)
INTR_FRAME INTR_FRAME
pushq_cfi $~(\num) pushq_cfi $~(\num)
.Lcommon_\sym:
interrupt \do_sym interrupt \do_sym
jmp ret_from_intr jmp ret_from_intr
CFI_ENDPROC CFI_ENDPROC
@ -974,13 +975,21 @@ apicinterrupt X86_PLATFORM_IPI_VECTOR \
x86_platform_ipi smp_x86_platform_ipi x86_platform_ipi smp_x86_platform_ipi
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
.irp idx,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, \ ALIGN
INTR_FRAME
.irp idx,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, \
16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31 16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31
.if NUM_INVALIDATE_TLB_VECTORS > \idx .if NUM_INVALIDATE_TLB_VECTORS > \idx
apicinterrupt (INVALIDATE_TLB_VECTOR_START)+\idx \ ENTRY(invalidate_interrupt\idx)
invalidate_interrupt\idx smp_invalidate_interrupt pushq_cfi $~(INVALIDATE_TLB_VECTOR_START+\idx)
jmp .Lcommon_invalidate_interrupt0
CFI_ADJUST_CFA_OFFSET -8
END(invalidate_interrupt\idx)
.endif .endif
.endr .endr
CFI_ENDPROC
apicinterrupt INVALIDATE_TLB_VECTOR_START, \
invalidate_interrupt0, smp_invalidate_interrupt
#endif #endif
apicinterrupt THRESHOLD_APIC_VECTOR \ apicinterrupt THRESHOLD_APIC_VECTOR \