6cc7361440
. Print message at script start telling how to get te summary
. Print the syscall name using the audit-lib-python package, if
installed
. Print the errno string
. Accept both pid (if numeric) or COMM name
Now it looks like this:
[root@emilia ~]# perf trace failed-syscalls-by-pid
Press control+C to stop and show the summary
^C
syscall errors:
comm [pid] count
------------------------------ ----------
automount [1670]
syscall: futex
err = ETIMEDOUT 39
irqbalance [1462]
syscall: openat
err = ENOENT 4
perf [7888]
syscall: lseek
err = ESPIPE 1
syscall: open
err = ENOENT 24
perf [7889]
syscall: ioctl
err = EINVAL 1
syscall: readlink
err = EINVAL 2
syscall: open
err = ENOENT 389
syscall: stat
err = ENOENT 141
syscall: lseek
err = ESPIPE 3
[root@emilia ~]#
[root@emilia ~]# perf trace failed-syscalls-by-pid 1670
Press control+C to stop and show the summary
^C
syscall errors:
comm [pid] count
------------------------------ ----------
automount [1670]
syscall: futex
err = ETIMEDOUT 2
[root@emilia ~]#
[root@emilia ~]#
[root@emilia ~]#
[root@emilia ~]# perf trace failed-syscalls-by-pid automount
Press control+C to stop and show the summary
^C
syscall errors for automount:
comm [pid] count
------------------------------ ----------
automount [1669]
syscall: futex
err = ETIMEDOUT 1
automount [1670]
syscall: futex
err = ETIMEDOUT 5
[root@emilia ~]#
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
65 lines
1.4 KiB
Python
65 lines
1.4 KiB
Python
# Util.py - Python extension for perf trace, miscellaneous utility code
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#
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# Copyright (C) 2010 by Tom Zanussi <tzanussi@gmail.com>
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#
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# This software may be distributed under the terms of the GNU General
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# Public License ("GPL") version 2 as published by the Free Software
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# Foundation.
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import errno, os
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NSECS_PER_SEC = 1000000000
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def avg(total, n):
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return total / n
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def nsecs(secs, nsecs):
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return secs * NSECS_PER_SEC + nsecs
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def nsecs_secs(nsecs):
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return nsecs / NSECS_PER_SEC
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def nsecs_nsecs(nsecs):
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return nsecs % NSECS_PER_SEC
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def nsecs_str(nsecs):
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str = "%5u.%09u" % (nsecs_secs(nsecs), nsecs_nsecs(nsecs)),
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return str
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def clear_term():
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print("\x1b[H\x1b[2J")
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audit_package_warned = False
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try:
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import audit
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machine_to_id = {
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'x86_64': audit.MACH_86_64,
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'alpha' : audit.MACH_ALPHA,
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'armeb' : audit.MACH_ARMEB,
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'ia64' : audit.MACH_IA64,
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'ppc' : audit.MACH_PPC,
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'ppc64' : audit.MACH_PPC64,
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's390' : audit.MACH_S390,
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's390x' : audit.MACH_S390X,
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'i386' : audit.MACH_X86,
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'i586' : audit.MACH_X86,
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'i686' : audit.MACH_X86,
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}
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machine_id = machine_to_id[os.uname()[4]]
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except:
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if not audit_package_warned:
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audit_package_warned = True
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print "Install the audit-libs-python package to get syscall names"
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def syscall_name(id):
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try:
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return audit.audit_syscall_to_name(id, machine_id)
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except:
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return str(id)
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def strerror(nr):
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try:
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return errno.errorcode[abs(nr)]
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except:
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return "Unknown %d errno" % nr
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