Commit-ID: 39e9543344fa3179e346d2b381c6e0cd17b516de Gitweb: http://git.kernel.org/tip/39e9543344fa3179e346d2b381c6e0cd17b516de Author: Jan Beulich <JBeulich@xxxxxxxx> AuthorDate: Tue, 29 Nov 2011 11:03:46 +0000 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Mon, 5 Dec 2011 17:24:39 +0100 x86-64: Reduce amount of redundant code generated for invalidate_interruptNN 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@xxxxxxxx> Reviewed-by: Andi Kleen <ak@xxxxxxxxxxxxxxx> Link: http://lkml.kernel.org/r/4ED4CA230200007800064065@xxxxxxxxxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- arch/x86/kernel/entry_64.S | 15 ++++++++++++--- 1 files changed, 12 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index ab4b7ff..1581f19 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -951,6 +951,7 @@ END(common_interrupt) ENTRY(\sym) INTR_FRAME pushq_cfi $~(\num) +.Lcommon_\sym: interrupt \do_sym jmp ret_from_intr CFI_ENDPROC @@ -974,13 +975,21 @@ apicinterrupt X86_PLATFORM_IPI_VECTOR \ x86_platform_ipi smp_x86_platform_ipi #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 .if NUM_INVALIDATE_TLB_VECTORS > \idx -apicinterrupt (INVALIDATE_TLB_VECTOR_START)+\idx \ - invalidate_interrupt\idx smp_invalidate_interrupt +ENTRY(invalidate_interrupt\idx) + pushq_cfi $~(INVALIDATE_TLB_VECTOR_START+\idx) + jmp .Lcommon_invalidate_interrupt0 + CFI_ADJUST_CFA_OFFSET -8 +END(invalidate_interrupt\idx) .endif .endr + CFI_ENDPROC +apicinterrupt INVALIDATE_TLB_VECTOR_START, \ + invalidate_interrupt0, smp_invalidate_interrupt #endif apicinterrupt THRESHOLD_APIC_VECTOR \ -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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