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Commit 7e4e0bd5 authored by Robert Richter's avatar Robert Richter
Browse files

oprofile: introduce module_param oprofile.cpu_type 



This patch removes module_param oprofile.force_arch_perfmon and
introduces oprofile.cpu_type=archperfmon instead. This new parameter
can be reused for other models and architectures.

Currently only archperfmon is supported.

Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: default avatarRobert Richter <robert.richter@amd.com>
parent 6adf406f

Documentation/kernel-parameters.txt

+7 −5
Original line number Diff line number Diff line
@@ -1650,11 +1650,13 @@ and is between 256 and 4096 characters. It is defined in the file 
	oprofile.timer=	[HW]

			Use timer interrupt instead of performance counters



	oprofile.force_arch_perfmon=1	[X86]

			Force use of architectural perfmon instead of

			the CPU specific event set.

			This might be useful if you have older oprofile

			userland or if you want common events over Intel CPUs.

	oprofile.cpu_type=	Force an oprofile cpu type

			This might be useful if you have an older oprofile

			userland or if you want common events.

			Format: { archperfmon }

			archperfmon: [X86] Force use of architectural

				perfmon on Intel CPUs instead of the

				CPU specific event set.



	osst=		[HW,SCSI] SCSI Tape Driver

			Format: <buffer_size>,<write_threshold>

arch/x86/oprofile/nmi_int.c

+11 −2
Original line number Diff line number Diff line
@@ -386,8 +386,17 @@ static int __init p4_init(char **cpu_type) 
	return 0;

}



int force_arch_perfmon;

module_param(force_arch_perfmon, int, 0);

static int force_arch_perfmon;

static int force_cpu_type(const char *str, struct kernel_param *kp)

{

	if (!strcmp(str, "archperfmon")) {

		force_arch_perfmon = 1;

		printk(KERN_INFO "oprofile: forcing architectural perfmon\n");

	}



	return 0;

}

module_param_call(cpu_type, force_cpu_type, NULL, NULL, 0);



static int __init ppro_init(char **cpu_type)

{