diff options
| author | Tony Lindgren <tony@atomide.com> | 2012-02-17 15:12:36 -0800 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2012-02-17 15:12:36 -0800 |
| commit | 4d68c05ce11f4cdf6a6392f3a18dc6a985b4d0c4 (patch) | |
| tree | 72e500b97c4bdcb9631209f3121f42b05ae30fea /arch/x86/oprofile/nmi_int.c | |
| parent | 40c0591f0a349ec074357e05c6ab1a3bc951807c (diff) | |
| parent | 19bfb76ca32f8e4fa80746608ff4a77707f40520 (diff) | |
| download | linux-4d68c05ce11f4cdf6a6392f3a18dc6a985b4d0c4.tar.bz2 | |
Merge branch 'for_3.4/dt_base' of git://git.kernel.org/pub/scm/linux/kernel/git/bcousson/linux-omap-dt into dt
Diffstat (limited to 'arch/x86/oprofile/nmi_int.c')
| -rw-r--r-- | arch/x86/oprofile/nmi_int.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c index 75f9528e0372..26b8a8514ee5 100644 --- a/arch/x86/oprofile/nmi_int.c +++ b/arch/x86/oprofile/nmi_int.c @@ -595,24 +595,36 @@ static int __init p4_init(char **cpu_type) return 0; } -static int force_arch_perfmon; -static int force_cpu_type(const char *str, struct kernel_param *kp) +enum __force_cpu_type { + reserved = 0, /* do not force */ + timer, + arch_perfmon, +}; + +static int force_cpu_type; + +static int set_cpu_type(const char *str, struct kernel_param *kp) { - if (!strcmp(str, "arch_perfmon")) { - force_arch_perfmon = 1; + if (!strcmp(str, "timer")) { + force_cpu_type = timer; + printk(KERN_INFO "oprofile: forcing NMI timer mode\n"); + } else if (!strcmp(str, "arch_perfmon")) { + force_cpu_type = arch_perfmon; printk(KERN_INFO "oprofile: forcing architectural perfmon\n"); + } else { + force_cpu_type = 0; } return 0; } -module_param_call(cpu_type, force_cpu_type, NULL, NULL, 0); +module_param_call(cpu_type, set_cpu_type, NULL, NULL, 0); static int __init ppro_init(char **cpu_type) { __u8 cpu_model = boot_cpu_data.x86_model; struct op_x86_model_spec *spec = &op_ppro_spec; /* default */ - if (force_arch_perfmon && cpu_has_arch_perfmon) + if (force_cpu_type == arch_perfmon && cpu_has_arch_perfmon) return 0; /* @@ -679,6 +691,9 @@ int __init op_nmi_init(struct oprofile_operations *ops) if (!cpu_has_apic) return -ENODEV; + if (force_cpu_type == timer) + return -ENODEV; + switch (vendor) { case X86_VENDOR_AMD: /* Needs to be at least an Athlon (or hammer in 32bit mode) */ |