The current platform detection is a little bit messy. We look for lines
in /proc/cpuinfo starting with 'flags' OR 'vendor-id', and scan both
for values we know will only occur in one or the other. We also keep
scanning once we've found a value, which could be a feature, but isn't
in this case.
We'd also like to add another platform, powerpc, which will just make it
worse. So clean it up in preparation.
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
---
scripts/kvm/kvm_stat | 44 +++++++++++++++++++++++++++++---------------
1 file changed, 29 insertions(+), 15 deletions(-)
diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat
index fe2eae3..98c81a8 100755
--- a/scripts/kvm/kvm_stat
+++ b/scripts/kvm/kvm_stat
@@ -169,27 +169,41 @@ generic_exit_reasons = {
23: 'EPR',
}
-vendor_exit_reasons = {
+x86_exit_reasons = {
'vmx': vmx_exit_reasons,
'svm': svm_exit_reasons,
- 'IBM/S390': generic_exit_reasons,
}
-syscall_numbers = {
- 'IBM/S390': 331,
-}
-
-sc_perf_evt_open = 298
-
+sc_perf_evt_open = None
exit_reasons = None
-for line in file('/proc/cpuinfo').readlines():
- if line.startswith('flags') or line.startswith('vendor_id'):
- for flag in line.split():
- if flag in vendor_exit_reasons:
- exit_reasons = vendor_exit_reasons[flag]
- if flag in syscall_numbers:
- sc_perf_evt_open = syscall_numbers[flag]
+def x86_init(flag):
+ globals().update({
+ 'sc_perf_evt_open' : 298,
+ 'exit_reasons' : x86_exit_reasons[flag],
+ })
+
+def s390_init():
+ globals().update({
+ 'sc_perf_evt_open' : 331,
+ 'exit_reasons' : generic_exit_reasons,
+ })
+
+def detect_platform():
+ for line in file('/proc/cpuinfo').readlines():
+ if line.startswith('flags'):
+ for flag in line.split():
+ if flag in x86_exit_reasons:
+ x86_init(flag)
+ return
+ elif line.startswith('vendor_id'):
+ for flag in line.split():
+ if flag == 'IBM/S390':
+ s390_init()
+ return
+
+detect_platform()
+
filters = {
'kvm_exit': ('exit_reason', exit_reasons)
}
--
1.9.1
--
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