Commit Graph

839597 Commits

Author SHA1 Message Date
Linus Torvalds
01be377c62 media updates for v5.2-rc1
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Merge tag 'media/v5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:
 "Some fixes for some platform drivers (rockchip, atmel, omap, daVinci,
  tegra-cec, coda and rcar).

  Also includes a fix on one of the V4L2 uAPI doc, explaining a border
  case"

* tag 'media/v5.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: rockchip/vpu: Fix/re-order probe-error/remove path
  media: rockchip/vpu: Initialize mdev->bus_info
  media: rockchip/vpu: Get vdev from the file arg in vidioc_querycap()
  media: rockchip/vpu: Add missing dont_use_autosuspend() calls
  media: rockchip/vpu: Do not request id 0 for our video device
  media: tegra-cec: fix cec_notifier_parse_hdmi_phandle return check
  media: davinci/vpbe: array underflow in vpbe_enum_outputs()
  media: field-order.rst: clarify FIELD_ANY and FIELD_NONE
  media: staging/imx: add media device to capture register
  media: rcar-csi2: Propagate the FLD signal for NTSC and PAL
  media: rcar-csi2: restart CSI-2 link if error is detected
  media: omap_vout: potential buffer overflow in vidioc_dqbuf()
  media: coda: fix unset field and fail on invalid field in buf_prepare
  media: atmel: atmel-isc: fix asd memory allocation
  media: atmel: atmel-isc: fix INIT_WORK misplacement
  media: atmel: atmel-isc: limit incoming pixels per frame
2019-05-16 11:57:16 -07:00
Linus Torvalds
11b1177399 * Do not build mpc85_edac as a module (Michael Ellerman)
* Correct edac_mc_find()'s return value on error	(Robert Richter)
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Merge tag 'edac_fixes_for_5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC fixes from Borislav Petkov:

 - Do not build mpc85_edac as a module (Michael Ellerman)

 - Correct edac_mc_find()'s return value on error (Robert Richter)

* tag 'edac_fixes_for_5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC/mc: Fix edac_mc_find() in case no device is found
  EDAC/mpc85xx: Prevent building as a module
2019-05-16 11:55:35 -07:00
Linus Torvalds
4e785e8d99 configs updates for Linux 5.2:
- a fix for an error path use after free (YueHaibing)
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Merge tag 'configfs-for-5.2' of git://git.infradead.org/users/hch/configfs

Pull configfs update from Christoph Hellwig:

 - a fix for an error path use after free (YueHaibing)

* tag 'configfs-for-5.2' of git://git.infradead.org/users/hch/configfs:
  configfs: fix possible use-after-free in configfs_register_group
2019-05-16 11:46:58 -07:00
Linus Torvalds
27ebbf9d5b asm-generic: kill <asm/segment.h> and improve nommu generic uaccess helpers
Christoph Hellwig writes:
 
   This is a series doing two somewhat interwinded things.  It improves
   the asm-generic nommu uaccess helper to optionally be entirely generic
   and not require any arch helpers for the actual uaccess.  For the
   generic uaccess.h to actually be generically useful I also had to kill
   off the mess we made of <asm/segment.h>, which really shouldn't exist
   on most architectures.
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'asm-generic-nommu' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull nommu generic uaccess updates from Arnd Bergmann:
 "asm-generic: kill <asm/segment.h> and improve nommu generic uaccess helpers

  Christoph Hellwig writes:

     This is a series doing two somewhat interwinded things. It improves
     the asm-generic nommu uaccess helper to optionally be entirely
     generic and not require any arch helpers for the actual uaccess.
     For the generic uaccess.h to actually be generically useful I also
     had to kill off the mess we made of <asm/segment.h>, which really
     shouldn't exist on most architectures"

* tag 'asm-generic-nommu' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic: optimize generic uaccess for 8-byte loads and stores
  asm-generic: provide entirely generic nommu uaccess
  arch: mostly remove <asm/segment.h>
  asm-generic: don't include <asm/segment.h> from <asm/uaccess.h>
2019-05-16 11:26:37 -07:00
Olof Johansson
faff3fcf01 AT91 SoC for 5.2
- PM changes for SAM9X60
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Merge tag 'at91-5.2-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into arm/late

AT91 SoC for 5.2

 - PM changes for SAM9X60

* tag 'at91-5.2-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
  ARM: at91: pm: do not disable/enable PLLA for ULP modes
  ARM: at91: pm: disable RC oscillator in ULP0
  ARM: at91: pm: add ULP1 support for SAM9X60
  ARM: at91: pm: add support for per SoC wakeup source configuration
  ARM: at91: pm: keep at91_pm_backup_init() only for SAMA5D2 SoCs
  ARM: at91: pm: initial PM support for SAM9X60
  dt-bindings: arm: atmel: add binding for SAM9X60 SoC
  ARM: at91: pm: introduce at91_soc_pm structure

Signed-off-by: Olof Johansson <olof@lixom.net>
2019-05-16 11:05:11 -07:00
Linus Torvalds
d396360acd Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "Misc fixes and updates:

   - a handful of MDS documentation/comment updates

   - a cleanup related to hweight interfaces

   - a SEV guest fix for large pages

   - a kprobes LTO fix

   - and a final cleanup commit for vDSO HPET support removal"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/speculation/mds: Improve CPU buffer clear documentation
  x86/speculation/mds: Revert CPU buffer clear on double fault exit
  x86/kconfig: Disable CONFIG_GENERIC_HWEIGHT and remove __HAVE_ARCH_SW_HWEIGHT
  x86/mm: Do not use set_{pud, pmd}_safe() when splitting a large page
  x86/kprobes: Make trampoline_handler() global and visible
  x86/vdso: Remove hpet_page from vDSO
2019-05-16 11:02:27 -07:00
Linus Torvalds
b2c3dda6f8 Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull time fixes from Ingo Molnar:
 "A TIA adjtimex interface extension, and a POSIX compliance ABI fix for
  timespec64 users"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  ntp: Allow TAI-UTC offset to be set to zero
  y2038: Make CONFIG_64BIT_TIME unconditional
2019-05-16 11:00:20 -07:00
Olof Johansson
e40b0695d5 AT91 defconfig for 5.2
- ov2640 driver as module
  - selecting HAVE_FB_ATMEL for SAMA5 SoCs is useless
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Merge tag 'at91-5.2-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux into arm/late

AT91 defconfig for 5.2

 - ov2640 driver as module
 - selecting HAVE_FB_ATMEL for SAMA5 SoCs is useless

* tag 'at91-5.2-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/at91/linux:
  ARM: at91: sama5: make ov2640 as a module
  ARM: at91: remove HAVE_FB_ATMEL for sama5 SoC as they use DRM

Signed-off-by: Olof Johansson <olof@lixom.net>
2019-05-16 10:59:33 -07:00
Linus Torvalds
c77ee64f8a Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "An x86 PMU constraint fix, an interface fix, and a Sparse fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Allow PEBS multi-entry in watermark mode
  perf/x86/intel: Fix INTEL_FLAGS_EVENT_CONSTRAINT* masking
  perf/x86/amd/iommu: Make the 'amd_iommu_attr_groups' symbol static
2019-05-16 10:58:54 -07:00
Olof Johansson
d6e245acc9 arm64: tegra: Device tree fixes for v5.2-rc1
This contains one patch to disable the recently added XUSB support on
 Jetson TX2 which is reported to cause boot and CPU hotplug failures in
 some cases and doesn't allow the core power rail to be switched off.
 
 Furthermore there are some changes to enable IOMMU support on more
 devices. This is needed in order to prevent these devices from breaking
 with the policy change in the ARM SMMU driver to break insecure devices
 that is currently headed for v5.2.
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Merge tag 'tegra-for-5.2-arm64-dt-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/late

arm64: tegra: Device tree fixes for v5.2-rc1

This contains one patch to disable the recently added XUSB support on
Jetson TX2 which is reported to cause boot and CPU hotplug failures in
some cases and doesn't allow the core power rail to be switched off.

Furthermore there are some changes to enable IOMMU support on more
devices. This is needed in order to prevent these devices from breaking
with the policy change in the ARM SMMU driver to break insecure devices
that is currently headed for v5.2.

* tag 'tegra-for-5.2-arm64-dt-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  arm64: tegra: Disable XUSB support on Jetson TX2
  arm64: tegra: Enable SMMU translation for PCI on Tegra186
  arm64: tegra: Fix insecure SMMU users for Tegra186

Signed-off-by: Olof Johansson <olof@lixom.net>
2019-05-16 10:55:23 -07:00
Olof Johansson
3c7f51bfad arm64: tegra: Core fixes for v5.2-rc1
This enables the ARM_GIC_PM driver by default for Tegra in order to
 increase build coverage.
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Merge tag 'tegra-for-5.2-arm64-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/late

arm64: tegra: Core fixes for v5.2-rc1

This enables the ARM_GIC_PM driver by default for Tegra in order to
increase build coverage.

* tag 'tegra-for-5.2-arm64-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  arm64: tegra: Select ARM_GIC_PM

Signed-off-by: Olof Johansson <olof@lixom.net>
2019-05-16 10:55:03 -07:00
Olof Johansson
23c6eddfbb bus/tegra: Fixes for v5.2-rc1
This contains a single fix for a potential PM-related build issue.
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Merge tag 'tegra-for-5.2-bus-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/late

bus/tegra: Fixes for v5.2-rc1

This contains a single fix for a potential PM-related build issue.

* tag 'tegra-for-5.2-bus-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  amba: tegra-ahb: Mark PM functions as __maybe_unused

Signed-off-by: Olof Johansson <olof@lixom.net>
2019-05-16 10:54:45 -07:00
Linus Torvalds
f57d7715d7 Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fix from Ingo Molnar:
 "A single rwsem fix"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/rwsem: Prevent decrement of reader count before increment
2019-05-16 10:54:19 -07:00
Marc Gonzalez
982c736cd6 Opt out of scripts/get_maintainer.pl
A few months ago, I submitted a trivial arm64 defconfig update.
get_maintainer.pl now outputs my address for every defconfig tweak.
Add me to .get_maintainer.ignore to opt out of these notifications.

Signed-off-by: Marc Gonzalez <marc.w.gonzalez@free.fr>
Signed-off-by: Olof Johansson <olof@lixom.net>
2019-05-16 10:53:40 -07:00
Olof Johansson
648a5fbc90 Merge tag 'socfpga_arm32_defconfig_for_v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux into arm/late
arm32 socfpga_defconfig updates for v5.2
- Enable LTC2497 driver
- Enable support for large block devices

* tag 'socfpga_arm32_defconfig_for_v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
  ARM: socfpga_defconfig: enable LTC2497
  ARM: socfpga_defconfig: enable support for large block devices

Signed-off-by: Olof Johansson <olof@lixom.net>
2019-05-16 10:53:34 -07:00
Olof Johansson
9e3bf9cdc7 Merge tag 'soc-fsl-fix-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux into arm/late
NXP/FSL soc driver fixes for v5.1

QE drivers
- Fix an error path in qe_pin_request()

* tag 'soc-fsl-fix-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/leo/linux:
  soc/fsl/qe: Fix an error code in qe_pin_request()

Signed-off-by: Olof Johansson <olof@lixom.net>
2019-05-16 10:53:28 -07:00
Olof Johansson
c32beba325 Merge tag 'mvebu-arm-5.2-1' of git://git.infradead.org/linux-mvebu into arm/late
mvebu arm for 5.2 (part 1)

 - remove improper error message on kirkwood
 - a couple a clean-up patch generated from automatic tools
 - clean-up in assembly code allowing using LLVM

* tag 'mvebu-arm-5.2-1' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: drop return from void function
  ARM: mvebu: prefix coprocessor operand with p
  ARM: mvebu: drop unnecessary label
  ARM: mvebu: fix a leaked reference by adding missing of_node_put
  ARM: mvebu: kirkwood: remove error message when retrieving mac address

Signed-off-by: Olof Johansson <olof@lixom.net>
2019-05-16 10:53:23 -07:00
Olof Johansson
163d65cbf3 Merge tag 'omap-for-v5.1/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/late
Two regression fixes for omaps

Two one-liners to fix board-ams-delta booting regression and
logicpd-som-lv MMC card detect to use GPIO_ACTIVE_LOW instead of
IRQ_TYPE_LEVEL_LOW. Note that the board-ams-delta regression has
been in there already since v5.0, so if necessary these can wait
for the merge window.

* tag 'omap-for-v5.1/fixes-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: logicpd-som-lv: Fix MMC1 card detect
  ARM: OMAP1: ams-delta: fix early boot crash when LED support is disabled

Signed-off-by: Olof Johansson <olof@lixom.net>
2019-05-16 10:53:18 -07:00
YueHaibing
8e7b65a6eb ARM: ixp4xx: Remove duplicated include from common.c
Remove duplicated include.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2019-05-16 10:53:15 -07:00
Dan Carpenter
c180d710ee soc: ixp4xx: qmgr: Fix an NULL vs IS_ERR() check in probe
The devm_ioremap_resource() function doesn't retunr NULL, it returns
error pointers.

Fixes: ecc133c6da ("soc: ixp4xx: qmgr: Pass resources")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2019-05-16 10:53:11 -07:00
Roman Gushchin
05b2892637 signal: unconditionally leave the frozen state in ptrace_stop()
Alex Xu reported a regression in strace, caused by the introduction of
the cgroup v2 freezer. The regression can be reproduced by stracing
the following simple program:

  #include <unistd.h>

  int main() {
      write(1, "a", 1);
      return 0;
  }

An attempt to run strace ./a.out leads to the infinite loop:
  [ pre-main omitted ]
  write(1, "a", 1)                        = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
  write(1, "a", 1)                        = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
  write(1, "a", 1)                        = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
  write(1, "a", 1)                        = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
  write(1, "a", 1)                        = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
  write(1, "a", 1)                        = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
  [ repeats forever ]

The problem occurs because the traced task leaves ptrace_stop()
(and the signal handling loop) with the frozen bit set. So let's
call cgroup_leave_frozen(true) unconditionally after sleeping
in ptrace_stop().

With this patch applied, strace works as expected:
  [ pre-main omitted ]
  write(1, "a", 1)                        = 1
  exit_group(0)                           = ?
  +++ exited with 0 +++

Reported-by: Alex Xu <alex_y_xu@yahoo.ca>
Fixes: 76f969e894 ("cgroup: cgroup v2 freezer")
Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
2019-05-16 10:43:58 -07:00
Linus Torvalds
b2ca74d32b Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core fixes from Ingo Molnar:
 "A handful of objtool updates, plus a documentation addition for
  __ab_c_size()"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Fix whitelist documentation typo
  objtool: Fix function fallthrough detection
  objtool: Don't use ignore flag for fake jumps
  overflow.h: Add comment documenting __ab_c_size()
2019-05-16 10:29:00 -07:00
Jin Yao
4fc4d8dfa0 perf stat: Support 'percore' event qualifier
With this patch, we can use the 'percore' event qualifier in perf-stat.

  root@skl:/tmp# perf stat -e cpu/event=0,umask=0x3,percore=1/,cpu/event=0,umask=0x3/ -a -A -I1000
    1.000773050 S0-C0   98,352,832 cpu/event=0,umask=0x3,percore=1/  (50.01%)
    1.000773050 S0-C1  103,763,057 cpu/event=0,umask=0x3,percore=1/  (50.02%)
    1.000773050 S0-C2  196,776,995 cpu/event=0,umask=0x3,percore=1/  (50.02%)
    1.000773050 S0-C3  176,493,779 cpu/event=0,umask=0x3,percore=1/  (50.02%)
    1.000773050 CPU0    47,699,641 cpu/event=0,umask=0x3/            (50.02%)
    1.000773050 CPU1    49,052,451 cpu/event=0,umask=0x3/            (49.98%)
    1.000773050 CPU2   102,771,422 cpu/event=0,umask=0x3/            (49.98%)
    1.000773050 CPU3   100,784,662 cpu/event=0,umask=0x3/            (49.98%)
    1.000773050 CPU4    43,171,342 cpu/event=0,umask=0x3/            (49.98%)
    1.000773050 CPU5    54,152,158 cpu/event=0,umask=0x3/            (49.98%)
    1.000773050 CPU6    93,618,410 cpu/event=0,umask=0x3/            (49.98%)
    1.000773050 CPU7    74,477,589 cpu/event=0,umask=0x3/            (49.99%)

In this example, we count the event 'ref-cycles' per-core and per-CPU in
one perf stat command-line. From the output, we can see:

  S0-C0 = CPU0 + CPU4
  S0-C1 = CPU1 + CPU5
  S0-C2 = CPU2 + CPU6
  S0-C3 = CPU3 + CPU7

So the result is expected (tiny difference is ignored).

Note that, the 'percore' event qualifier needs to use with option '-A'.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1555077590-27664-4-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16 14:17:24 -03:00
Jin Yao
40480a8136 perf stat: Factor out aggregate counts printing
Move the aggregate counts printing to a new function
print_counter_aggrdata, which will be used in following patches.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1555077590-27664-3-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16 14:17:24 -03:00
Jin Yao
064b4e82aa perf tools: Add a 'percore' event qualifier
Add a 'percore' event qualifier, like cpu/event=0,umask=0x3,percore=1/,
that sums up the event counts for both hardware threads in a core.

We can already do this with --per-core, but it's often useful to do
this together with other metrics that are collected per hardware thread.
So we need to support this per-core counting on a event level.

This can be implemented in only the user tool, no kernel support needed.

 v4:
 ---
 1. Add Arnaldo's patch which updates the documentation for
    this new qualifier.
 2. Rebase to latest perf/core branch

 v3:
 ---
 Simplify the code according to Jiri's comments.
 Before:
   "return term->val.percore ? true : false;"
 Now:
   "return term->val.percore;"

 v2:
 ---
 Change the qualifier name from 'coresum' to 'percore' according to
 comments from Jiri and Andi.

Signed-off-by: Jin Yao <yao.jin@linux.intel.com>
Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jin Yao <yao.jin@intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1555077590-27664-2-git-send-email-yao.jin@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16 14:17:24 -03:00
Thomas Richter
6cf6265639 perf docs: Add description for stderr
'perf report' displays recorded data on the screen and emits warnings
and debug messages in the status line (last one on screen).

perf also supports the possibility to write all debug messages to stderr
(instead of writing them to the status line).

This is achieved with the following command:

  # ./perf --debug stderr=1 report -vvvvv -i ~/fast.data 2>/tmp/2
  # ll /tmp/2
  -rw-rw-r-- 1 tmricht tmricht 5420835 May  7 13:46 /tmp/2
  #

The usage of variable stderr=1 is not documented, so add it to the perf
man page.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Link: http://lkml.kernel.org/r/20190513080220.91966-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16 14:17:24 -03:00
Adrian Hunter
1b6599a9d8 perf intel-pt: Fix sample timestamp wrt non-taken branches
The sample timestamp is updated to ensure that the timestamp represents
the time of the sample and not a branch that the decoder is still
walking towards. The sample timestamp is updated when the decoder
returns, but the decoder does not return for non-taken branches. Update
the sample timestamp then also.

Note that commit 3f04d98e97 ("perf intel-pt: Improve sample
timestamp") was also a stable fix and appears, for example, in v4.4
stable tree as commit a4ebb58fd1 ("perf intel-pt: Improve sample
timestamp").

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org # v4.4+
Fixes: 3f04d98e97 ("perf intel-pt: Improve sample timestamp")
Link: http://lkml.kernel.org/r/20190510124143.27054-4-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16 14:17:24 -03:00
Adrian Hunter
61b6e08dc8 perf intel-pt: Fix improved sample timestamp
The decoder uses its current timestamp in samples. Usually that is a
timestamp that has already passed, but in some cases it is a timestamp
for a branch that the decoder is walking towards, and consequently
hasn't reached.

The intel_pt_sample_time() function decides which is which, but was not
handling TNT packets exactly correctly.

In the case of TNT, the timestamp applies to the first branch, so the
decoder must first walk to that branch.

That means intel_pt_sample_time() should return true for TNT, and this
patch makes that change. However, if the first branch is a non-taken
branch (i.e. a 'N'), then intel_pt_sample_time() needs to return false
for subsequent taken branches in the same TNT packet.

To handle that, introduce a new state INTEL_PT_STATE_TNT_CONT to
distinguish the cases.

Note that commit 3f04d98e97 ("perf intel-pt: Improve sample
timestamp") was also a stable fix and appears, for example, in v4.4
stable tree as commit a4ebb58fd1 ("perf intel-pt: Improve sample
timestamp").

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org # v4.4+
Fixes: 3f04d98e97 ("perf intel-pt: Improve sample timestamp")
Link: http://lkml.kernel.org/r/20190510124143.27054-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16 14:17:23 -03:00
Adrian Hunter
7ba8fa20e2 perf intel-pt: Fix instructions sampling rate
The timestamp used to determine if an instruction sample is made, is an
estimate based on the number of instructions since the last known
timestamp. A consequence is that it might go backwards, which results in
extra samples. Change it so that a sample is only made when the
timestamp goes forwards.

Note this does not affect a sampling period of 0 or sampling periods
specified as a count of instructions.

Example:

 Before:

 $ perf script --itrace=i10us
 ls 13812 [003] 2167315.222583:       3270 instructions:u:      7fac71e2e494 __GI___tunables_init+0xf4 (/lib/x86_64-linux-gnu/ld-2.28.so)
 ls 13812 [003] 2167315.222667:      30902 instructions:u:      7fac71e2da0f _dl_cache_libcmp+0x2f (/lib/x86_64-linux-gnu/ld-2.28.so)
 ls 13812 [003] 2167315.222667:         10 instructions:u:      7fac71e2d9ff _dl_cache_libcmp+0x1f (/lib/x86_64-linux-gnu/ld-2.28.so)
 ls 13812 [003] 2167315.222667:          8 instructions:u:      7fac71e2d9ea _dl_cache_libcmp+0xa (/lib/x86_64-linux-gnu/ld-2.28.so)
 ls 13812 [003] 2167315.222667:         14 instructions:u:      7fac71e2d9ea _dl_cache_libcmp+0xa (/lib/x86_64-linux-gnu/ld-2.28.so)
 ls 13812 [003] 2167315.222667:          6 instructions:u:      7fac71e2d9ff _dl_cache_libcmp+0x1f (/lib/x86_64-linux-gnu/ld-2.28.so)
 ls 13812 [003] 2167315.222667:         14 instructions:u:      7fac71e2d9ff _dl_cache_libcmp+0x1f (/lib/x86_64-linux-gnu/ld-2.28.so)
 ls 13812 [003] 2167315.222667:          4 instructions:u:      7fac71e2dab2 _dl_cache_libcmp+0xd2 (/lib/x86_64-linux-gnu/ld-2.28.so)
 ls 13812 [003] 2167315.222728:      16423 instructions:u:      7fac71e2477a _dl_map_object_deps+0x1ba (/lib/x86_64-linux-gnu/ld-2.28.so)
 ls 13812 [003] 2167315.222734:      12731 instructions:u:      7fac71e27938 _dl_name_match_p+0x68 (/lib/x86_64-linux-gnu/ld-2.28.so)
 ...

 After:
 $ perf script --itrace=i10us
 ls 13812 [003] 2167315.222583:       3270 instructions:u:      7fac71e2e494 __GI___tunables_init+0xf4 (/lib/x86_64-linux-gnu/ld-2.28.so)
 ls 13812 [003] 2167315.222667:      30902 instructions:u:      7fac71e2da0f _dl_cache_libcmp+0x2f (/lib/x86_64-linux-gnu/ld-2.28.so)
 ls 13812 [003] 2167315.222728:      16479 instructions:u:      7fac71e2477a _dl_map_object_deps+0x1ba (/lib/x86_64-linux-gnu/ld-2.28.so)
 ...

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: stable@vger.kernel.org
Fixes: f4aa081949 ("perf tools: Add Intel PT decoder")
Link: http://lkml.kernel.org/r/20190510124143.27054-2-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16 14:17:23 -03:00
Kan Liang
6466ec14aa perf regs x86: Add X86 specific arch__intr_reg_mask()
XMM registers can be collected on Icelake and later platforms.

Add specific arch__intr_reg_mask(), which creating an event to check if
the kernel and hardware can collect XMM registers.

Test on Skylake which doesn't support XMM registers collection. There is
nothing changed.

   #perf record -I?
   available registers: AX BX CX DX SI DI BP SP IP FLAGS CS SS R8 R9
   R10 R11 R12 R13 R14 R15

   Usage: perf record [<options>] [<command>]
    or: perf record [<options>] -- <command> [<options>]

    -I, --intr-regs[=<any register>]
                          sample selected machine registers on
   interrupt, use '-I?' to list register names

   #perf record -I
   [ perf record: Woken up 1 times to write data ]
   [ perf record: Captured and wrote 0.905 MB perf.data (2520 samples) ]

   #perf evlist -v
   cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type:
   IP|TID|TIME|CPU|PERIOD|REGS_INTR, read_format: ID, disabled: 1,
   inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, precise_ip: 3,
   sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, ksymbol:
   1, bpf_event: 1, sample_regs_intr: 0xff0fff

Test on Icelake which support XMM registers collection.

   #perf record -I?
   available registers: AX BX CX DX SI DI BP SP IP FLAGS CS SS R8 R9 R10
   R11 R12 R13 R14 R15 XMM0 XMM1 XMM2 XMM3 XMM4 XMM5 XMM6 XMM7 XMM8 XMM9
   XMM10 XMM11 XMM12 XMM13 XMM14 XMM15

   Usage: perf record [<options>] [<command>]
    or: perf record [<options>] -- <command> [<options>]

    -I, --intr-regs[=<any register>]
                          sample selected machine registers on
   interrupt, use '-I?' to list register names

   #perf record -I
   [ perf record: Woken up 1 times to write data ]
   [ perf record: Captured and wrote 0.800 MB perf.data (318 samples) ]

   #perf evlist -v
   cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type:
   IP|TID|TIME|CPU|PERIOD|REGS_INTR, read_format: ID, disabled: 1,
   inherit: 1, mmap: 1, comm: 1, freq: 1, task: 1, precise_ip: 3,
   sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, ksymbol:
   1, bpf_event: 1, sample_regs_intr: 0xffffffff00ff0fff

Committer notes:

Don't set attr.sample_period as a named struct init, as it is part of an
unnamed union in 'struct perf_event_attr', and doing so breaks the build
on older gcc versions, such as:

  gcc version 4.1.2 20080704 (Red Hat 4.1.2-55)
  gcc version 4.4.7 20120313 (Red Hat 4.4.7-23) (GCC)

  arch/x86/util/perf_regs.c: In function 'arch__intr_reg_mask':
  arch/x86/util/perf_regs.c:279: error: unknown field 'sample_period' specified in initializer
  cc1: warnings being treated as errors
  arch/x86/util/perf_regs.c:279: warning: missing braces around initializer
  arch/x86/util/perf_regs.c:279: warning: (near initialization for 'attr.<anonymous>')

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
[ Only on a lenovo t480s, a skylake machine, where the XMM registers didn't show up in -I?/--user-regs=? as expected ]
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1557865174-56264-3-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16 14:17:23 -03:00
Kan Liang
af785e75bf perf parse-regs: Add generic support for arch__intr/user_reg_mask()
There may be different register mask for use with intr or user on some
platforms, e.g. Icelake.

Add weak functions arch__intr_reg_mask() and arch__user_reg_mask() to
return intr and user register mask respectively.

Check mask before printing or comparing the register name.

Generic code always return PERF_REGS_MASK. No functional change.

Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Tested-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/1557865174-56264-2-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-05-16 14:17:12 -03:00
Linus Torvalds
8c05f3b965 ARM development updates:
- more unified assembly conversions for clang
 - drop obsolete -mauto-it assembler option
 - remove arm_memory_present in preference to the generic version
 - remove unused asm/limits.h header
 - vdso linker update
 
 We tried to make the assembler warn if unified syntax was not used,
 but unfortunately older versions of GCC warn, so the commit had to
 be reverted.
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Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King:
 "ARM development updates:

   - more unified assembly conversions for clang

   - drop obsolete -mauto-it assembler option

   - remove arm_memory_present in preference to the generic version

   - remove unused asm/limits.h header

   - vdso linker update

  We tried to make the assembler warn if unified syntax was not used,
  but unfortunately older versions of GCC warn, so the commit had to be
  reverted"

* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  Revert "ARM: 8846/1: warn if divided syntax assembler is used"
  ARM: 8858/1: vdso: use $(LD) instead of $(CC) to link VDSO
  ARM: 8855/1: remove unused <asm/limits.h>
  ARM: 8850/1: use memblocks_present
  ARM: 8854/1: drop -mauto-it
  ARM: 8846/1: warn if divided syntax assembler is used
  ARM: 8853/1: drop WASM to work around LLVM issue
  ARM: 8852/1: uaccess: use unified assembler language syntax
  ARM: 8851/1: add TUSERCOND() macro for conditional postfix
2019-05-16 09:41:54 -07:00
Linus Torvalds
ab02888e39 ARM: SoC defconfig updates
- Mostly the usual churn due to options being reordered or not added
    in the right locations.
  - Some various enabling of new drivers, etc.
 
 ... i.e. the usual updates, nothing particularly sticks out.
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Merge tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC defconfig updates from Olof Johansson:
 "Mostly the usual churn due to options being reordered or not added in
  the right locations.

  Some various enabling of new drivers, etc.

  ... i.e. the usual updates, nothing particularly sticks out"

* tag 'armsoc-defconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (23 commits)
  arm64: defconfig: Update UFSHCD for Hi3660 soc
  ARM: multi_v7_defconfig: Enable support for STPMIC1
  ARM: multi_v7_defconfig: Enable missing drivers for supported Chromebooks
  arm64: defconfig: enable mv-xor driver
  ARM: Enable Trusted Foundations for multiplatform ARM v7
  ARM: tegra: Enable Trusted Foundations by default
  ARM: tegra: Update default configuration for v5.1-rc1
  ARM: multi_v7_defconfig: Update for moved options
  ARM: multi_v7_defconfig: Update for dropped options
  ARM: shmobile: Enable USB [EO]HCI HCD PLATFORM support in shmobile_defconfig
  ARM: shmobile: Enable PHY_RCAR_GEN3_USB2 in shmobile_defconfig
  ARM: qcom_defconfig: add options for LG Nexus 5 phone
  arm64: defconfig: include the Agilex platform to the arm64 defconfig
  arm64: defconfig: Add PWM Fan support
  arm64: defconfig: Enable Tegra HDA support
  ARM: multi_v7_defconfig: Enable support for CFI NOR FLASH
  ARM: shmobile: defconfig: Enable support for CFI NOR FLASH
  ARM: shmobile: defconfig: Refresh for v5.1-rc1
  ARM: multi_v7_defconfig: enable the Amlogic Meson ADC and eFuse drivers
  arm64: defconfig: enable fpga and service layer
  ...
2019-05-16 09:35:26 -07:00
David Howells
d8076bdb56 uapi: Wire up the mount API syscalls on non-x86 arches [ver #2]
Wire up the mount API syscalls on non-x86 arches.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2019-05-16 12:23:45 -04:00
David Howells
9c8ad7a2ff uapi, x86: Fix the syscall numbering of the mount API syscalls [ver #2]
Fix the syscall numbering of the mount API syscalls so that the numbers
match between i386 and x86_64 and that they're in the common numbering
scheme space.

Fixes: a07b200047 ("vfs: syscall: Add open_tree(2) to reference or clone a mount")
Fixes: 2db154b3ea ("vfs: syscall: Add move_mount(2) to move mounts around")
Fixes: 24dcb3d90a ("vfs: syscall: Add fsopen() to prepare for superblock creation")
Fixes: ecdab150fd ("vfs: syscall: Add fsconfig() for configuring and managing a context")
Fixes: 93766fbd26 ("vfs: syscall: Add fsmount() to create a mount for a superblock")
Fixes: cf3cba4a42 ("vfs: syscall: Add fspick() to select a superblock for reconfiguration")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2019-05-16 12:23:45 -04:00
Christian Brauner
1cdc415f10 uapi, fsopen: use square brackets around "fscontext" [ver #2]
Make the name of the anon inode fd "[fscontext]" instead of "fscontext".
This is minor but most core-kernel anon inode fds already carry square
brackets around their name:

[eventfd]
[eventpoll]
[fanotify]
[io_uring]
[pidfd]
[signalfd]
[timerfd]
[userfaultfd]

For the sake of consistency lets do the same for the fscontext anon inode
fd that comes with the new mount api.

Signed-off-by: Christian Brauner <christian@brauner.io>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2019-05-16 12:23:45 -04:00
Linus Torvalds
dc413a90ed ARM: SoC-related driver updates
Various driver updates for platforms and a couple of the small driver
 subsystems we merge through our tree:
 
 Among the larger pieces:
 
  - Power management improvements for TI am335x and am437x (RTC suspend/wake)
  - Misc new additions for Amlogic (socinfo updates)
  - ZynqMP FPGA manager
  - Nvidia improvements for reset/powergate handling
  - PMIC wrapper for Mediatek MT8516
  - Misc fixes/improvements for ARM SCMI, TEE, NXP i.MX SCU drivers
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Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC-related driver updates from Olof Johansson:
 "Various driver updates for platforms and a couple of the small driver
  subsystems we merge through our tree:

  Among the larger pieces:

   - Power management improvements for TI am335x and am437x (RTC
     suspend/wake)

   - Misc new additions for Amlogic (socinfo updates)

   - ZynqMP FPGA manager

   - Nvidia improvements for reset/powergate handling

   - PMIC wrapper for Mediatek MT8516

   - Misc fixes/improvements for ARM SCMI, TEE, NXP i.MX SCU drivers"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (57 commits)
  soc: aspeed: fix Kconfig
  soc: add aspeed folder and misc drivers
  spi: zynqmp: Fix build break
  soc: imx: Add generic i.MX8 SoC driver
  MAINTAINERS: Update email for Qualcomm SoC maintainer
  memory: tegra: Fix a typos for "fdcdwr2" mc client
  Revert "ARM: tegra: Restore memory arbitration on resume from LP1 on Tegra30+"
  memory: tegra: Replace readl-writel with mc_readl-mc_writel
  memory: tegra: Fix integer overflow on tick value calculation
  memory: tegra: Fix missed registers values latching
  ARM: tegra: cpuidle: Handle tick broadcasting within cpuidle core on Tegra20/30
  optee: allow to work without static shared memory
  soc/tegra: pmc: Move powergate initialisation to probe
  soc/tegra: pmc: Remove reset sysfs entries on error
  soc/tegra: pmc: Fix reset sources and levels
  soc: amlogic: meson-gx-pwrc-vpu: Add support for G12A
  soc: amlogic: meson-gx-pwrc-vpu: Fix power on/off register bitmask
  fpga manager: Adding FPGA Manager support for Xilinx zynqmp
  dt-bindings: fpga: Add bindings for ZynqMP fpga driver
  firmware: xilinx: Add fpga API's
  ...
2019-05-16 09:19:14 -07:00
Linus Torvalds
e8a1d70117 ARM: Device-tree updates
Besides new bindings and additional descriptions of hardware blocks for
 various SoCs and boards, the main new contents here is:
 
 SoCs:
  - Intel Agilex (SoCFPGA)
  - NXP i.MX8MM (Quad Cortex-A53 with media/graphics focus)
 
 New boards:
  - Allwinner:
   + RerVision H3-DVK (H3)
   + Oceanic 5205 5inMFD (H6)
   + Beelink GS2 (H6)
   + Orange Pi 3 (H6)
  - Rockchip:
   + Orange Pi RK3399
   + Nanopi NEO4
   + Veyron-Mighty Chromebook variant
  - Amlogic:
   + SEI Robotics SEI510
  - ST Micro:
   + stm32mp157a discovery1
   + stm32mp157c discovery2
  - NXP:
   + Eckelmann ci4x10 (i.MX6DL)
   + i.MX8MM EVK (i.MX8MM)
   + ZII i.MX7 RPU2 (i.MX7)
   + ZII SPB4 (VF610)
   + Zii Ultra (i.MX8M)
   + TQ TQMa7S (i.MX7Solo)
   + TQ TQMa7D (i.MX7Dual)
   + Kobo Aura (i.MX50)
   + Menlosystems M53 (i.MX53)j
  - Nvidia:
   + Jetson Nano (Tegra T210)
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Merge tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM Device-tree updates from Olof Johansson:
 "Besides new bindings and additional descriptions of hardware blocks
  for various SoCs and boards, the main new contents here is:

  SoCs:
   - Intel Agilex (SoCFPGA)
   - NXP i.MX8MM (Quad Cortex-A53 with media/graphics focus)

  New boards:
   - Allwinner:
      + RerVision H3-DVK (H3)
      + Oceanic 5205 5inMFD (H6)
      + Beelink GS2 (H6)
      + Orange Pi 3 (H6)
   - Rockchip:
      + Orange Pi RK3399
      + Nanopi NEO4
      + Veyron-Mighty Chromebook variant
   - Amlogic:
      + SEI Robotics SEI510
   - ST Micro:
      + stm32mp157a discovery1
      + stm32mp157c discovery2
   - NXP:
      + Eckelmann ci4x10 (i.MX6DL)
      + i.MX8MM EVK (i.MX8MM)
      + ZII i.MX7 RPU2 (i.MX7)
      + ZII SPB4 (VF610)
      + Zii Ultra (i.MX8M)
      + TQ TQMa7S (i.MX7Solo)
      + TQ TQMa7D (i.MX7Dual)
      + Kobo Aura (i.MX50)
      + Menlosystems M53 (i.MX53)j
   - Nvidia:
      + Jetson Nano (Tegra T210)"

* tag 'armsoc-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (593 commits)
  arm64: dts: bitmain: Add UART pinctrl support for Sophon Edge
  arm64: dts: bitmain: Add pinctrl support for BM1880 SoC
  arm64: dts: bitmain: Add GPIO Line names for Sophon Edge board
  arm64: dts: bitmain: Add GPIO support for BM1880 SoC
  ARM: dts: gemini: Indent DIR-685 partition table
  dt-bindings: hwmon (pwm-fan) Remove dead "cooling-*-state" properties
  ARM: dts: qcom-apq8064: Set 'cxo_board' as ref clock of the DSI PHY
  arm64: dts: msm8998: thermal: Restrict thermal zone name length to under 20
  arm64: dts: msm8998: thermal: Fix number of supported sensors
  arm64: dts: msm8998-mtp: thermal: Remove skin and battery thermal zones
  arm64: dts: exynos: Move fixed-clocks out of soc
  arm64: dts: exynos: Move pmu and timer nodes out of soc
  ARM: dts: s5pv210: Fix camera clock provider on Goni board
  ARM: dts: exynos: Properly override node to use MDMA0 on Universal C210
  ARM: dts: exynos: Move fixed-clocks out of soc on Exynos3250
  ARM: dts: exynos: Remove unneeded address/size cells from fixed-clock on Exynos3250
  ARM: dts: exynos: Move pmu and timer nodes out of soc
  arm64: dts: rockchip: fix IO domain voltage setting of APIO5 on rockpro64
  arm64: dts: db820c: Add sound card support
  arm64: dts: apq8096-db820c: Add HDMI display support
  ...
2019-05-16 08:38:17 -07:00
Linus Torvalds
22c58fd70c ARM: SoC platform updates
SoC updates, mostly refactorings and cleanups of old legacy platforms.
 Major themes this release:
 
  - Conversion of ixp4xx to a modern platform (drivers, DT, bindings)
  - Moving some of the ep93xx headers around to get it closer to multiplatform enabled.
  - Cleanups of Davinci
 
 This tag also contains a few patches that were queued up as fixes before
 5.1 but I didn't get sent in before release.
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Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC platform updates from Olof Johansson:
 "SoC updates, mostly refactorings and cleanups of old legacy platforms.

  Major themes this release:

   - Conversion of ixp4xx to a modern platform (drivers, DT, bindings)

   - Moving some of the ep93xx headers around to get it closer to
     multiplatform enabled.

   - Cleanups of Davinci

  This also contains a few patches that were queued up as fixes before
  5.1 but I didn't get sent in before release"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (123 commits)
  ARM: debug-ll: add default address for digicolor
  ARM: u300: regulator: add MODULE_LICENSE()
  ARM: ep93xx: move private headers out of mach/*
  ARM: ep93xx: move pinctrl interfaces into include/linux/soc
  ARM: ep93xx: keypad: stop using mach/platform.h
  ARM: ep93xx: move network platform data to separate header
  ARM: stm32: add AMBA support for stm32 family
  MAINTAINERS: update arch/arm/mach-davinci
  ARM: rockchip: add missing of_node_put in rockchip_smp_prepare_pmu
  ARM: dts: Add queue manager and NPE to the IXP4xx DTSI
  soc: ixp4xx: qmgr: Add DT probe code
  soc: ixp4xx: qmgr: Add DT bindings for IXP4xx qmgr
  soc: ixp4xx: npe: Add DT probe code
  soc: ixp4xx: Add DT bindings for IXP4xx NPE
  soc: ixp4xx: qmgr: Pass resources
  soc: ixp4xx: Remove unused functions
  soc: ixp4xx: Uninline several functions
  soc: ixp4xx: npe: Pass addresses as resources
  ARM: ixp4xx: Turn the QMGR into a platform device
  ARM: ixp4xx: Turn the NPE into a platform device
  ...
2019-05-16 08:31:32 -07:00
David Howells
fd711586bb afs: Fix double inc of vnode->cb_break
When __afs_break_callback() clears the CB_PROMISED flag, it increments
vnode->cb_break to trigger a future refetch of the status and callback -
however it also calls afs_clear_permits(), which also increments
vnode->cb_break.

Fix this by removing the increment from afs_clear_permits().

Whilst we're at it, fix the conditional call to afs_put_permits() as the
function checks to see if the argument is NULL, so the check is redundant.

Fixes: be080a6f43 ("afs: Overhaul permit caching");
Signed-off-by: David Howells <dhowells@redhat.com>
2019-05-16 16:25:21 +01:00
David Howells
a58823ac45 afs: Fix application of status and callback to be under same lock
When applying the status and callback in the response of an operation,
apply them in the same critical section so that there's no race between
checking the callback state and checking status-dependent state (such as
the data version).

Fix this by:

 (1) Allocating a joint {status,callback} record (afs_status_cb) before
     calling the RPC function for each vnode for which the RPC reply
     contains a status or a status plus a callback.  A flag is set in the
     record to indicate if a callback was actually received.

 (2) These records are passed into the RPC functions to be filled in.  The
     afs_decode_status() and yfs_decode_status() functions are removed and
     the cb_lock is no longer taken.

 (3) xdr_decode_AFSFetchStatus() and xdr_decode_YFSFetchStatus() no longer
     update the vnode.

 (4) xdr_decode_AFSCallBack() and xdr_decode_YFSCallBack() no longer update
     the vnode.

 (5) vnodes, expected data-version numbers and callback break counters
     (cb_break) no longer need to be passed to the reply delivery
     functions.

     Note that, for the moment, the file locking functions still need
     access to both the call and the vnode at the same time.

 (6) afs_vnode_commit_status() is now given the cb_break value and the
     expected data_version and the task of applying the status and the
     callback to the vnode are now done here.

     This is done under a single taking of vnode->cb_lock.

 (7) afs_pages_written_back() is now called by afs_store_data() rather than
     by the reply delivery function.

     afs_pages_written_back() has been moved to before the call point and
     is now given the first and last page numbers rather than a pointer to
     the call.

 (8) The indicator from YFS.RemoveFile2 as to whether the target file
     actually got removed (status.abort_code == VNOVNODE) rather than
     merely dropping a link is now checked in afs_unlink rather than in
     xdr_decode_YFSFetchStatus().

Supplementary fixes:

 (*) afs_cache_permit() now gets the caller_access mask from the
     afs_status_cb object rather than picking it out of the vnode's status
     record.  afs_fetch_status() returns caller_access through its argument
     list for this purpose also.

 (*) afs_inode_init_from_status() now uses a write lock on cb_lock rather
     than a read lock and now sets the callback inside the same critical
     section.

Fixes: c435ee3455 ("afs: Overhaul the callback handling")
Signed-off-by: David Howells <dhowells@redhat.com>
2019-05-16 16:25:21 +01:00
David Howells
c7226e407b afs: Fix lock-wait/callback-break double locking
__afs_break_callback() holds vnode->lock around its call of
afs_lock_may_be_available() - which also takes that lock.

Fix this by not taking the lock in __afs_break_callback().

Also, there's no point checking the granted_locks and pending_locks queues;
it's sufficient to check lock_state, so move that check out of
afs_lock_may_be_available() into __afs_break_callback() to replace the
queue checks.

Fixes: e8d6c55412 ("AFS: implement file locking")
Signed-off-by: David Howells <dhowells@redhat.com>
2019-05-16 16:25:21 +01:00
David Howells
4571577f16 afs: Always get the reply time
Always ask for the reply time from AF_RXRPC as it's used to calculate the
callback expiry time and lock expiry times, so it's needed by most FS
operations.

Signed-off-by: David Howells <dhowells@redhat.com>
2019-05-16 16:25:21 +01:00
David Howells
d9052dda8a afs: Don't invalidate callback if AFS_VNODE_DIR_VALID not set
Don't invalidate the callback promise on a directory if the
AFS_VNODE_DIR_VALID flag is not set (which indicates that the directory
contents are invalid, due to edit failure, callback break, page reclaim).

The directory will be reloaded next time the directory is accessed, so
clearing the callback flag at this point may race with a reload of the
directory and cancel it's recorded callback promise.

Fixes: f3ddee8dc4 ("afs: Fix directory handling")
Signed-off-by: David Howells <dhowells@redhat.com>
2019-05-16 16:25:21 +01:00
David Howells
87182759cd afs: Fix order-1 allocation in afs_do_lookup()
afs_do_lookup() will do an order-1 allocation to allocate status records if
there are more than 39 vnodes to stat.

Fix this by allocating an array of {status,callback} records for each vnode
we want to examine using vmalloc() if larger than a page.

This not only gets rid of the order-1 allocation, but makes it easier to
grow beyond 50 records for YFS servers.  It also allows us to move to
{status,callback} tuples for other calls too and makes it easier to lock
across the application of the status and the callback to the vnode.

Fixes: 5cf9dd55a0 ("afs: Prospectively look up extra files when doing a single lookup")
Signed-off-by: David Howells <dhowells@redhat.com>
2019-05-16 16:25:21 +01:00
David Howells
781070551c afs: Fix calculation of callback expiry time
Fix the calculation of the expiry time of a callback promise, as obtained
from operations like FS.FetchStatus and FS.FetchData.

The time should be based on the timestamp of the first DATA packet in the
reply and the calculation needs to turn the ktime_t timestamp into a
time64_t.

Fixes: c435ee3455 ("afs: Overhaul the callback handling")
Signed-off-by: David Howells <dhowells@redhat.com>
2019-05-16 16:25:21 +01:00
David Howells
ffba718e93 afs: Get rid of afs_call::reply[]
Replace the afs_call::reply[] array with a bunch of typed members so that
the compiler can use type-checking on them.  It's also easier for the eye
to see what's going on.

Signed-off-by: David Howells <dhowells@redhat.com>
2019-05-16 16:25:21 +01:00
David Howells
3b05e528cb afs: Make dynamic root population wait uninterruptibly for proc_cells_lock
Make dynamic root population wait uninterruptibly for proc_cells_lock.

Signed-off-by: David Howells <dhowells@redhat.com>
2019-05-16 16:25:21 +01:00
David Howells
fefb2483dc afs: Don't pass the vnode pointer through into the inline bulk status op
Don't pass the vnode pointer through into the inline bulk status op.  We
want to process the status records outside of it anyway.

Signed-off-by: David Howells <dhowells@redhat.com>
2019-05-16 16:25:21 +01:00
David Howells
20b8391fff afs: Make some RPC operations non-interruptible
Make certain RPC operations non-interruptible, including:

 (*) Set attributes
 (*) Store data

     We don't want to get interrupted during a flush on close, flush on
     unlock, writeback or an inode update, leaving us in a state where we
     still need to do the writeback or update.

 (*) Extend lock
 (*) Release lock

     We don't want to get lock extension interrupted as the file locks on
     the server are time-limited.  Interruption during lock release is less
     of an issue since the lock is time-limited, but it's better to
     complete the release to avoid a several-minute wait to recover it.

     *Setting* the lock isn't a problem if it's interrupted since we can
      just return to the user and tell them they were interrupted - at
      which point they can elect to retry.

 (*) Silly unlink

     We want to remove silly unlink files if we can, rather than leaving
     them for the salvager to clear up.

Note that whilst these calls are no longer interruptible, they do have
timeouts on them, so if the server stops responding the call will fail with
something like ETIME or ECONNRESET.

Without this, the following:

	kAFS: Unexpected error from FS.StoreData -512

appears in dmesg when a pending store data gets interrupted and some
processes may just hang.

Additionally, make the code that checks/updates the server record ignore
failure due to interruption if the main call is uninterruptible and if the
server has an address list.  The next op will check it again since the
expiration time on the old list has past.

Fixes: d2ddc776a4 ("afs: Overhaul volume and server record caching and fileserver rotation")
Reported-by: Jonathan Billings <jsbillings@jsbillings.org>
Reported-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
2019-05-16 16:25:20 +01:00