From: Heinz Graalfs <graa...@linux.vnet.ibm.com>
Correct sys_perf_event_open syscall number for s390 architecture
- the hardcoded syscall number 298 is for x86 but should
be different for other architectures.
In case we figure out via /proc/cpuinfo that we are running
on s390 the appropriate syscall number is used from map
syscall_numbers; other architectures can extend this.
Signed-off-by: Heinz Graalfs <graa...@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jf...@linux.vnet.ibm.com>
Signed-off-by: Alexander Graf <ag...@suse.de>
---
scripts/kvm/kvm_stat | 11 +++++++++--
1 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat
index e8d68f0..762544b 100755
--- a/scripts/kvm/kvm_stat
+++ b/scripts/kvm/kvm_stat
@@ -170,6 +170,12 @@ vendor_exit_reasons = {
'IBM/S390': s390_exit_reasons,
}
+syscall_numbers = {
+ 'IBM/S390': 331,
+}
+
+sc_perf_evt_open = 298
+
exit_reasons = None
for line in file('/proc/cpuinfo').readlines():
@@ -177,7 +183,8 @@ for line in file('/proc/cpuinfo').readlines():
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]
filters = {
'kvm_exit': ('exit_reason', exit_reasons)
}
@@ -206,7 +213,7 @@ class perf_event_attr(ctypes.Structure):
('bp_len', ctypes.c_uint64),
]
def _perf_event_open(attr, pid, cpu, group_fd, flags):
- return syscall(298, ctypes.pointer(attr), ctypes.c_int(pid),
+ return syscall(sc_perf_evt_open, ctypes.pointer(attr), ctypes.c_int(pid),
ctypes.c_int(cpu), ctypes.c_int(group_fd),
ctypes.c_long(flags))
--
1.6.0.2
