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Commit 3da02648 authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Michael Ellerman
Browse files

powerpc/mm: Move CMO accounting out of do_page_fault into a helper 



It makes do_page_fault() more readable. No functional change.

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent b5c8f0fd

arch/powerpc/mm/fault.c

+18 −11
Original line number Diff line number Diff line
@@ -222,6 +222,23 @@ static bool bad_kernel_fault(bool is_exec, unsigned long error_code, 
	return is_exec || (address >= TASK_SIZE);

}



#ifdef CONFIG_PPC_SMLPAR

static inline void cmo_account_page_fault(void)

{

	if (firmware_has_feature(FW_FEATURE_CMO)) {

		u32 page_ins;



		preempt_disable();

		page_ins = be32_to_cpu(get_lppaca()->page_ins);

		page_ins += 1 << PAGE_FACTOR;

		get_lppaca()->page_ins = cpu_to_be32(page_ins);

		preempt_enable();

	}

}

#else

static inline void cmo_account_page_fault(void) { }

#endif /* CONFIG_PPC_SMLPAR */



/*

 * Define the correct "is_write" bit in error_code based

 * on the processor family
@@ -501,17 +518,7 @@ static int __do_page_fault(struct pt_regs *regs, unsigned long address, 
		current->maj_flt++;

		perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1,

			      regs, address);

#ifdef CONFIG_PPC_SMLPAR

		if (firmware_has_feature(FW_FEATURE_CMO)) {

			u32 page_ins;



			preempt_disable();

			page_ins = be32_to_cpu(get_lppaca()->page_ins);

			page_ins += 1 << PAGE_FACTOR;

			get_lppaca()->page_ins = cpu_to_be32(page_ins);

			preempt_enable();

		}

#endif /* CONFIG_PPC_SMLPAR */

		cmo_account_page_fault();

	} else {

		current->min_flt++;

		perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1,