Re: [V3] powerpc/irq: Enable some more exceptions in /proc/interrupts interface
From: Michael Ellerman <mpe@ellerman.id.au>
Date: 2015-08-04 09:57:26
On Mon, 2015-13-07 at 08:16:06 UTC, Anshuman Khandual wrote:
This patch enables facility unavailable exceptions for generic facility, FPU, ALTIVEC and VSX in /proc/interrupts listing by incrementing their newly added IRQ statistical counters as and when these exceptions happen. This also adds couple of helper functions which will be called from within the interrupt handler context to update their statistics. Similarly this patch also enables alignment and program check exceptions as well.
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quoted hunk ↗ jump to hunk
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 0a0399c2..a86180c 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S@@ -1158,6 +1158,7 @@ BEGIN_FTR_SECTION END_FTR_SECTION_IFSET(CPU_FTR_TM) #endif bl load_up_fpu + bl fpu_unav_exceptions_count
Is it safe to call C code here?
b fast_exception_return #ifdef CONFIG_PPC_TRANSACTIONAL_MEM 2: /* User process was in a transaction */
cheers