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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: Robert Richter <robert.richter@amd.com>
This commit is contained in:
Robert Richter 2009-05-06 12:10:23 +02:00
parent 6adf406f0a
commit 7e4e0bd50e
2 changed files with 18 additions and 7 deletions
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12
Documentation/kernel-parameters.txt
View File

@ -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>

13
arch/x86/oprofile/nmi_int.c
View File

@ -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)
{