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[PULL,27/35] kvm_stat: Abstract ioctl numbers

Message ID 1414776373-9704-28-git-send-email-pbonzini@redhat.com
State New
Headers show

Commit Message

Paolo Bonzini Oct. 31, 2014, 5:26 p.m. UTC 
From: Michael Ellerman <mpe@ellerman.id.au>

Unfortunately ioctl numbers are platform specific, so abstract them out
of the code so they can be overridden. As it happens x86 and s390 share
the same values, so nothing needs to change yet.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 scripts/kvm/kvm_stat | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)
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Patch

diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat
index 00d4c5d..a65d0a3 100755
--- a/scripts/kvm/kvm_stat
+++ b/scripts/kvm/kvm_stat
@@ -177,6 +177,12 @@  x86_exit_reasons = {
 sc_perf_evt_open = None
 exit_reasons = None
 
+ioctl_numbers = {
+    'SET_FILTER' : 0x40082406,
+    'ENABLE'     : 0x00002400,
+    'DISABLE'    : 0x00002401,
+}
+
 def x86_init(flag):
     globals().update({
         'sc_perf_evt_open' : 298,
@@ -301,14 +307,14 @@  class Event(object):
             raise Exception('perf_event_open failed')
         if filter:
             import fcntl
-            fcntl.ioctl(fd, 0x40082406, filter)
+            fcntl.ioctl(fd, ioctl_numbers['SET_FILTER'], filter)
         self.fd = fd
     def enable(self):
         import fcntl
-        fcntl.ioctl(self.fd, 0x00002400, 0)
+        fcntl.ioctl(self.fd, ioctl_numbers['ENABLE'], 0)
     def disable(self):
         import fcntl
-        fcntl.ioctl(self.fd, 0x00002401, 0)
+        fcntl.ioctl(self.fd, ioctl_numbers['DISABLE'], 0)
 
 class TracepointProvider(object):
     def __init__(self):