From patchwork Mon Oct 29 18:40:19 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [2/7] s390/kvm_stat: correct sys_perf_event_open syscall number Date: Mon, 29 Oct 2012 08:40:19 -0000 From: Alexander Graf X-Patchwork-Id: 195130 Message-Id: <1351536024-27536-3-git-send-email-agraf@suse.de> To: qemu-devel qemu-devel Cc: Blue Swirl , Heinz Graalfs , Jens Freimann , Aurelien Jarno From: Heinz Graalfs 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 Signed-off-by: Jens Freimann Signed-off-by: Alexander Graf --- 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))