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| author | Keir Fraser <keir.fraser@citrix.com> | 2009-09-15 10:08:12 +0100 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2009-09-15 10:08:12 +0100 |
| commit | ac61c93e1563712865b6837a56045ab7e4d95399 (patch) | |
| tree | cb2f59460ee0b0b0f11d284ec4f7b182496c424d | |
| parent | 3aa88456d12d6180300b923880c68234b95ec82c (diff) | |
| download | xen-ac61c93e1563712865b6837a56045ab7e4d95399.tar.gz xen-ac61c93e1563712865b6837a56045ab7e4d95399.tar.bz2 xen-ac61c93e1563712865b6837a56045ab7e4d95399.zip | |
xenoprof: force use of architectural perfmon instead of the CPU
specific event set, which may be not supported by oprofile user space
tool yet.
Signed-off-by: Yang Zhang <yang.zhang@intel.com>
Signed-off-by: Yang Xiaowei <xiaowei.yang@intel.com>
| -rw-r--r-- | xen/arch/x86/oprofile/nmi_int.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/xen/arch/x86/oprofile/nmi_int.c b/xen/arch/x86/oprofile/nmi_int.c index d05d7a360c..07050457f3 100644 --- a/xen/arch/x86/oprofile/nmi_int.c +++ b/xen/arch/x86/oprofile/nmi_int.c @@ -344,11 +344,26 @@ static int __init p4_init(char ** cpu_type) } +static int force_arch_perfmon; +static int force_cpu_type(const char *str) +{ + if (!strcmp(str, "arch_perfmon")) { + force_arch_perfmon = 1; + printk(KERN_INFO "oprofile: forcing architectural perfmon\n"); + } + + return 0; +} +custom_param("cpu_type", force_cpu_type); + extern int ppro_has_global_ctrl; static int __init ppro_init(char ** cpu_type) { __u8 cpu_model = current_cpu_data.x86_model; + if (force_arch_perfmon && cpu_has_arch_perfmon) + return 0; + switch (cpu_model) { case 0 ... 2: *cpu_type = "i386/ppro"; |