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Commit d0f585dd authored by Robert Richter's avatar Robert Richter
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x86/oprofile: Moving nmi_cpu_save/restore_mpx_registers() in nmi_int.c 



This patch moves some code in nmi_int.c to get a single separate
multiplexing code section.

Signed-off-by: default avatarRobert Richter <robert.richter@amd.com>
parent 48fb4b46

arch/x86/oprofile/nmi_int.c

+24 −28
Original line number Original line Diff line number Diff line
@@ -147,6 +147,30 @@ static void nmi_cpu_setup_mux(int cpu, struct op_msrs const * const msrs) 
	per_cpu(switch_index, cpu) = 0;

	per_cpu(switch_index, cpu) = 0;

}

}





static void nmi_cpu_save_mpx_registers(struct op_msrs *msrs)

{

	struct op_msr *multiplex = msrs->multiplex;

	int i;



	for (i = 0; i < model->num_counters; ++i) {

		int virt = op_x86_phys_to_virt(i);

		if (multiplex[virt].addr)

			rdmsrl(multiplex[virt].addr, multiplex[virt].saved);

	}

}



static void nmi_cpu_restore_mpx_registers(struct op_msrs *msrs)

{

	struct op_msr *multiplex = msrs->multiplex;

	int i;



	for (i = 0; i < model->num_counters; ++i) {

		int virt = op_x86_phys_to_virt(i);

		if (multiplex[virt].addr)

			wrmsrl(multiplex[virt].addr, multiplex[virt].saved);

	}

}



#else

#else





inline int op_x86_phys_to_virt(int phys) { return phys; }

inline int op_x86_phys_to_virt(int phys) { return phys; }
@@ -252,34 +276,6 @@ static int nmi_setup(void) 
	return 0;

	return 0;

}

}





#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX



static void nmi_cpu_save_mpx_registers(struct op_msrs *msrs)

{

	struct op_msr *multiplex = msrs->multiplex;

	int i;



	for (i = 0; i < model->num_counters; ++i) {

		int virt = op_x86_phys_to_virt(i);

		if (multiplex[virt].addr)

			rdmsrl(multiplex[virt].addr, multiplex[virt].saved);

	}

}



static void nmi_cpu_restore_mpx_registers(struct op_msrs *msrs)

{

	struct op_msr *multiplex = msrs->multiplex;

	int i;



	for (i = 0; i < model->num_counters; ++i) {

		int virt = op_x86_phys_to_virt(i);

		if (multiplex[virt].addr)

			wrmsrl(multiplex[virt].addr, multiplex[virt].saved);

	}

}



#endif



static void nmi_cpu_restore_registers(struct op_msrs *msrs)

static void nmi_cpu_restore_registers(struct op_msrs *msrs)

{

{

	struct op_msr *counters = msrs->counters;

	struct op_msr *counters = msrs->counters;