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Stefan Raspl 3b83a52796 tools/kvm_stat: fix handling of invalid paths in debugfs provider 
[ Upstream commit 617c66b9f2 ]

When filtering by guest, kvm_stat displays garbage when the guest is
destroyed - see sample output below.
We add code to remove the invalid paths from the providers, so at least
no more garbage is displayed.
Here's a sample output to illustrate:

  kvm statistics - pid 13986 (foo)

   Event                                         Total %Total CurAvg/s
   diagnose_258                                     -2    0.0        0
   deliver_program_interruption                     -3    0.0        0
   diagnose_308                                     -4    0.0        0
   halt_poll_invalid                               -91    0.0       -6
   deliver_service_signal                         -244    0.0      -16
   halt_successful_poll                           -250    0.1      -17
   exit_pei                                       -285    0.1      -19
   exit_external_request                          -312    0.1      -21
   diagnose_9c                                    -328    0.1      -22
   userspace_handled                              -713    0.1      -47
   halt_attempted_poll                            -939    0.2      -62
   deliver_emergency_signal                      -3126    0.6     -208
   halt_wakeup                                   -7199    1.5     -481
   exit_wait_state                               -7379    1.5     -493
   diagnose_500                                 -56499   11.5    -3757
   exit_null                                    -85491   17.4    -5685
   diagnose_44                                 -133300   27.1    -8874
   exit_instruction                            -195898   39.8   -13037
   Total                                       -492063

Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2018-10-10 08:54:20 +02:00
Documentation hwmon: (ina2xx) fix sysfs shunt resistor read access 2018-10-03 17:00:58 -07:00
arch KVM: PPC: Book3S HV: Don't truncate HPTE index in xlate function 2018-10-10 08:54:19 +02:00
block blk-mq: avoid to synchronize rcu inside blk_cleanup_queue() 2018-09-26 08:38:13 +02:00
certs Replace magic for trusting the secondary keyring with #define 2018-09-09 19:55:54 +02:00
crypto crypto: skcipher - Fix -Wstringop-truncation warnings 2018-10-03 17:00:45 -07:00
drivers net: hns: add netif_carrier_off before change speed and duplex 2018-10-10 08:54:20 +02:00
firmware License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fs btrfs: btrfs_shrink_device should call commit transaction at the end 2018-10-10 08:54:19 +02:00
include media: v4l: event: Prevent freeing event subscriptions while accessed 2018-10-03 17:01:00 -07:00
init init: rename and re-order boot_cpu_state_init() 2018-08-15 18:12:48 +02:00
ipc ipc/sem.c: prevent queue.status tearing in semop 2018-09-05 09:26:30 +02:00
kernel bpf: sockmap: write_space events need to be passed to TCP handler 2018-10-03 17:00:58 -07:00
lib scsi: klist: Make it safe to use klists in atomic context 2018-10-03 17:00:48 -07:00
mm slub: make ->cpu_partial unsigned int 2018-10-03 17:00:55 -07:00
net mac80211: always account for A-MSDU header changes 2018-10-10 08:54:20 +02:00
samples samples/bpf: Check the error of write() and read() 2018-08-24 13:09:12 +02:00
scripts kbuild: add .DELETE_ON_ERROR special target 2018-09-26 08:37:59 +02:00
security Revert "uapi/linux/keyctl.h: don't use C++ reserved keyword as a struct member name" 2018-09-29 03:06:04 -07:00
sound ASoC: dapm: Fix potential DAI widget pointer deref when linking DAIs 2018-10-03 17:00:53 -07:00
tools tools/kvm_stat: fix handling of invalid paths in debugfs provider 2018-10-10 08:54:20 +02:00
usr initramfs: fix initramfs rebuilds w/ compression after disabling 2017-11-03 07:39:19 -07:00
virt KVM: arm/arm64: Fix vgic init race 2018-09-26 08:38:04 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Add hch to .get_maintainer.ignore 2015-08-21 14:30:10 -07:00
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore kbuild: rpm-pkg: keep spec file until make mrproper 2018-02-13 10:19:46 +01:00
.mailmap .mailmap: Add Maciej W. Rozycki's Imagination e-mail address 2017-11-10 12:16:15 -08:00
COPYING
…
CREDITS MAINTAINERS: update TPM driver infrastructure changes 2017-11-09 17:58:40 -08:00
Kbuild License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
MAINTAINERS dt-bindings: Document mti,mips-cpc binding 2018-03-15 10:54:35 +01:00
Makefile Linux 4.14.74 2018-10-03 17:01:00 -07:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

README 

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.