diff options
Diffstat (limited to 'scripts/kvm/kvm_stat')
| -rwxr-xr-x | scripts/kvm/kvm_stat | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat index d43e8f3e85..3cf1181750 100755 --- a/scripts/kvm/kvm_stat +++ b/scripts/kvm/kvm_stat @@ -22,6 +22,7 @@ import resource import struct import re from collections import defaultdict +from time import sleep VMX_EXIT_REASONS = { 'EXCEPTION_NMI': 0, @@ -778,7 +779,7 @@ def get_providers(options): return providers -def check_access(): +def check_access(options): if not os.path.exists('/sys/kernel/debug'): sys.stderr.write('Please enable CONFIG_DEBUG_FS in your kernel.') sys.exit(1) @@ -790,14 +791,24 @@ def check_access(): "Also ensure, that the kvm modules are loaded.\n") sys.exit(1) - if not os.path.exists(PATH_DEBUGFS_TRACING): - sys.stderr.write("Please make {0} readable by the current user.\n" - .format(PATH_DEBUGFS_TRACING)) - sys.exit(1) + if not os.path.exists(PATH_DEBUGFS_TRACING) and (options.tracepoints + or not options.debugfs): + sys.stderr.write("Please enable CONFIG_TRACING in your kernel " + "when using the option -t (default).\n" + "If it is enabled, make {0} readable by the " + "current user.\n") + if options.tracepoints: + sys.exit(1) + + sys.stderr.write("Falling back to debugfs statistics!\n" + options.debugfs = True + sleep(5) + + return options def main(): - check_access() options = get_options() + options = check_access(options) providers = get_providers(options) stats = Stats(providers, fields=options.fields) |