Drop -e option to python scripts, use hidden --ebpf only.

As discussed in https://github.com/iovisor/bcc/pull/1531
review comments.
Signed-off-by: Nathan Scott <nathans@redhat.com>

tools/biolatency.py

@@ -4,7 +4,7 @@
 # biolatency    Summarize block device I/O latency as a histogram.
 #       For Linux, uses BCC, eBPF.
 #
-# USAGE: biolatency [-h] [-T] [-Q] [-m] [-D] [-e] [interval] [count]
+# USAGE: biolatency [-h] [-T] [-Q] [-m] [-D] [interval] [count]
 #
 # Copyright (c) 2015 Brendan Gregg.
 # Licensed under the Apache License, Version 2.0 (the "License")
@@ -27,7 +27,7 @@ examples = """examples:
 parser = argparse.ArgumentParser(
     description="Summarize block device I/O latency as a histogram",
     formatter_class=argparse.RawDescriptionHelpFormatter,
-    epilog=examples)
+    epilog=examples, allow_abbrev=False)
 parser.add_argument("-T", "--timestamp", action="store_true",
     help="include timestamp on output")
 parser.add_argument("-Q", "--queued", action="store_true",
@@ -36,12 +36,12 @@ parser.add_argument("-m", "--milliseconds", action="store_true",
     help="millisecond histogram")
 parser.add_argument("-D", "--disks", action="store_true",
     help="print a histogram per disk device")
-parser.add_argument("-e", "--ebpf", action="store_true",
-    help="report the eBPF program and exit")
 parser.add_argument("interval", nargs="?", default=99999999,
     help="output interval, in seconds")
 parser.add_argument("count", nargs="?", default=99999999,
     help="number of outputs")
+parser.add_argument("--ebpf", action="store_true",
+    help=argparse.SUPPRESS)
 args = parser.parse_args()
 countdown = int(args.count)
 debug = 0

tools/biotop.py

@@ -4,7 +4,7 @@
 # biotop  block device (disk) I/O by process.
 #         For Linux, uses BCC, eBPF.
 #
-# USAGE: biotop.py [-h] [-C] [-r MAXROWS] [-e] [interval] [count]
+# USAGE: biotop.py [-h] [-C] [-r MAXROWS] [interval] [count]
 #
 # This uses in-kernel eBPF maps to cache process details (PID and comm) by I/O
 # request, as well as a starting timestamp for calculating I/O latency.
@@ -31,17 +31,17 @@ examples = """examples:
 parser = argparse.ArgumentParser(
     description="Block device (disk) I/O by process",
     formatter_class=argparse.RawDescriptionHelpFormatter,
-    epilog=examples)
+    epilog=examples, allow_abbrev=False)
 parser.add_argument("-C", "--noclear", action="store_true",
     help="don't clear the screen")
 parser.add_argument("-r", "--maxrows", default=20,
     help="maximum rows to print, default 20")
-parser.add_argument("-e", "--ebpf", action="store_true",
-    help="report the eBPF program and exit")
 parser.add_argument("interval", nargs="?", default=1,
     help="output interval, in seconds")
 parser.add_argument("count", nargs="?", default=99999999,
     help="number of outputs")
+parser.add_argument("--ebpf", action="store_true",
+    help=argparse.SUPPRESS)
 args = parser.parse_args()
 interval = int(args.interval)
 countdown = int(args.count)

tools/tcplife.py

@@ -43,7 +43,7 @@ examples = """examples:
 parser = argparse.ArgumentParser(
     description="Trace the lifespan of TCP sessions and summarize",
     formatter_class=argparse.RawDescriptionHelpFormatter,
-    epilog=examples)
+    epilog=examples, allow_abbrev=False)
 parser.add_argument("-T", "--time", action="store_true",
     help="include time column on output (HH:MM:SS)")
 parser.add_argument("-t", "--timestamp", action="store_true",
@@ -58,8 +58,8 @@ parser.add_argument("-L", "--localport",
     help="comma-separated list of local ports to trace.")
 parser.add_argument("-D", "--remoteport",
     help="comma-separated list of remote ports to trace.")
-parser.add_argument("-e", "--ebpf", action="store_true",
-    help="report the eBPF program and exit")
+parser.add_argument("--ebpf", action="store_true",
+    help=argparse.SUPPRESS)
 args = parser.parse_args()
 debug = 0