These reg_default tables are not modified after initialized, so make them
const.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
i2c_driver does not need to set an owner because i2c_register_driver()
will set it.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is
not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer
functionality only, can still be compiled if GPIOLIB is not enabled.
If COMPILE_TEST is enabled, relax the dependency on GPIOLIB for the
recently introduced symbols LEDS_AAT1290 and LEDS_KTD2692.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
The GPIO subsystem provides dummy GPIO consumer functions if GPIOLIB is
not enabled. Hence drivers that depend on GPIOLIB, but use GPIO consumer
functionality only, can still be compiled if GPIOLIB is not enabled.
Relax the dependency on GPIOLIB if COMPILE_TEST is enabled, where
appropriate.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: linux-leds@vger.kernel.org
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
1. Since max-microamp property has had no users so far, then rename
it to more descriptive led-max-microamp.
2. Since flash-timeout-us property has had no users so far, then rename
it to more accurate flash-max-timeout-us.
3. Describe led-max-microamp property as mandatory for specific board
configurations.
4. Make flash-max-microamp and flash-max-timeout-us properties mandatory
for devices with configurable flash current and flash timeout settings
respectively.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: devicetree@vger.kernel.org
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Having the IS_NULL_OR_ERR() check after dereferencing the pointer is
not really working well.
Move the dereference after the check.
Fixes: a782a7e46b 'x86/irq: Store irq descriptor in vector array'
Reported-and-tested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
The effort to replace mtrr_add() with architecture agnostic
arch_phys_wc_add() is complete, this will ensure write-combining
implementations (PAT on x86) is taken advantage instead of using
MTRR. With the effort done now, hide direct MTRR access for
drivers.
The legacy user-space /proc/mtrr ABI is not affected.
Update x86 documentation on MTRR to reflect the completion of
the phasing out of direct access to MTRR, also add a note on
platform firmware code use of MTRRs based on the obituary
discussion of MTRRs on Linux [0].
[0] http://lkml.kernel.org/r/1438991330.3109.196.camel@hp.com
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Cc: <syrjala@sci.fi>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Walls <awalls@md.metrocast.net>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Davidlohr Bueso <dbueso@suse.de>
Cc: Doug Ledford <dledford@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suresh Siddha <sbsiddha@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: Ville Syrjälä <syrjala@sci.fi>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: airlied@linux.ie
Cc: benh@kernel.crashing.org
Cc: bhelgaas@google.com
Cc: dan.j.williams@intel.com
Cc: konrad.wilk@oracle.com
Cc: linux-fbdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-media@vger.kernel.org
Cc: mst@redhat.com
Cc: netdev@vger.kernel.org
Cc: vinod.koul@intel.com
Cc: xen-devel@lists.xensource.com
Link: http://lkml.kernel.org/r/1440443613-13696-12-git-send-email-mcgrof@do-not-panic.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
User visible:
- Add support for using several Intel PT features (CYC, MTC packets), the
relevant documentation was updated: tools/perf/Documentation/intel-pt.txt,
briefly describing those packets, its purposes, how to configure them in
the event config terms and relevant external documentation for further
reading. (Adrian Hunter)
- Introduce support for probing at an absolute address, for user and kernel
'perf probe's, useful when one have the symbol maps on a developer machine
but not on an embedded system (Wang Nan)
- Fix 'perf probe' list results when a symbol can't be found or the
address is zero and when an offset is provided without a function (Wang Nan)
- Do not print '0x (null)' in uprobes when offset is zero (Wang Nan)
- Clear the progress bar at the end of a ordered_events flush, fixing
an UI artifact when, after ordering the events the screen doesn't get
completely redraw, for instance, when an error window covers just the
center of the screen and waits for user input. (Arnaldo Carvalho de Melo)
- Fix 'annotate' segfault by resetting the dso find_symbol cache when removing
symbols (Arnaldo Carvalho de Melo)
Infrastructure:
- Allow duplicate objects in the object list, just like it is possible to have
things like this, in the kernel: (Jiri Olsa)
drivers/Makefile:obj-$(CONFIG_PCI) += usb/
drivers/Makefile:obj-$(CONFIG_USB_GADGET) += usb/
- Fix Intel PT 'instructions' sample period (Adrian Hunter)
- Prevent segfault when reading probe point with absolute address (Wang Nan)
Build fixes:
- Fix tarball build broken by pt/bts (Adrian Hunter)
- Remove export.h from MANIFEST, fixing the perf tarball make target (Jiri Olsa)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
User visible changes:
- Add support for using several Intel PT features (CYC, MTC packets), the
relevant documentation was updated: tools/perf/Documentation/intel-pt.txt,
briefly describing those packets, its purposes, how to configure them in
the event config terms and relevant external documentation for further
reading. (Adrian Hunter)
- Introduce support for probing at an absolute address, for user and kernel
'perf probe's, useful when one have the symbol maps on a developer machine
but not on an embedded system. (Wang Nan)
- Fix 'perf probe' list results when a symbol can't be found or the
address is zero and when an offset is provided without a function (Wang Nan)
- Do not print '0x (null)' in uprobes when offset is zero (Wang Nan)
- Clear the progress bar at the end of a ordered_events flush, fixing
an UI artifact when, after ordering the events the screen doesn't get
completely redraw, for instance, when an error window covers just the
center of the screen and waits for user input. (Arnaldo Carvalho de Melo)
- Fix 'annotate' segfault by resetting the dso find_symbol cache when removing
symbols. (Arnaldo Carvalho de Melo)
Infrastructure changes:
- Allow duplicate objects in the object list, just like it is possible to have
things like this, in the kernel:
drivers/Makefile:obj-$(CONFIG_PCI) += usb/
drivers/Makefile:obj-$(CONFIG_USB_GADGET) += usb/
(Jiri Olsa)
- Fix Intel PT 'instructions' sample period. (Adrian Hunter)
- Prevent segfault when reading probe point with absolute address. (Wang Nan)
Build fixes:
- Fix tarball build broken by pt/bts. (Adrian Hunter)
- Remove export.h from MANIFEST, fixing the perf tarball make target. (Jiri Olsa)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The following commit:
1b3d4200c1 ("PCI: Add pci_iomap_wc() variants")
Introduced pci_iomap_wc() variants but broke the s390 build,
because s390 requires its own implementation of pcio_iomap*()
calls.
The reason for that is that:
"BAR spaces are not disjunctive on s390 so we need the bar
parameter of pci_iomap to find the corresponding device
and create the mapping cookie"
so it has its own lookup/lock solution and it does not include
asm-generic/pci_iomap.h.
Since it currenty maps ioremap_wc() to ioremap_nocache() and
that's the architecture default we can easily just map the wc
calls to the default calls as well.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Frank Blaschka <frank.blaschka@de.ibm.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-fbdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-s390@vger.kernel.org
Cc: linux390@de.ibm.com
Link: http://lkml.kernel.org/r/1440632050-23648-1-git-send-email-mcgrof@do-not-panic.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
We just need one macro of X86_EFLAGS_AC_BIT and X86_EFLAGS_AC.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@suse.de>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Li <tony.li@amd.com>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1440669844-21535-1-git-send-email-ray.huang@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
- Fix MSI/MSI-X on pseries from Guilherme
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Merge tag 'powerpc-4.2-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Fix MSI/MSI-X on pseries from Guilherme"
* tag 'powerpc-4.2-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/PCI: Disable MSI/MSI-X interrupts at PCI probe time in OF case
PCI: Make pci_msi_setup_pci_dev() non-static for use by arch code
Pull networking fixes from David Miller:
"Some straggler bug fixes here:
1) Netlink_sendmsg() doesn't check iterator type properly in mmap
case, from Ken-ichirou MATSUZAWA.
2) Don't sleep in atomic context in bcmgenet driver, from Florian
Fainelli.
3) The pfkey_broadcast() code patch can't actually ever use anything
other than GFP_ATOMIC. And the cases that right now pass
GFP_KERNEL or similar will currently trigger an RCU splat. Just
use GFP_ATOMIC unconditionally. From David Ahern.
4) Fix FD bit timings handling in pcan_usb driver, from Marc
Kleine-Budde.
5) Cache dst leaked in ip6_gre tunnel removal, fix from Huaibin Wang.
6) Traversal into drivers/net/ethernet/renesas should be triggered by
CONFIG_NET_VENDOR_RENESAS, not a particular driver's config
option. From Kazuya Mizuguchi.
7) Fix regression in handling of igmp_join errors in vxlan, from
Marcelo Ricardo Leitner.
8) Make phy_{read,write}_mmd_indirect() properly take the mdio_lock
mutex when programming the registers. From Russell King.
9) Fix non-forced handling in u32_destroy(), from WANG Cong.
10) Test the EVENT_NO_RUNTIME_PM flag before it is cleared in
usbnet_stop(), from Eugene Shatokhin.
11) In sfc driver, don't fetch statistics firmware isn't capable of,
from Bert Kenward.
12) Verify ASCONF address parameter location in SCTP, from Xin Long"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
sctp: donot reset the overall_error_count in SHUTDOWN_RECEIVE state
sctp: asconf's process should verify address parameter is in the beginning
sfc: only use vadaptor stats if firmware is capable
net: phy: fixed: propagate fixed link values to struct
usbnet: Get EVENT_NO_RUNTIME_PM bit before it is cleared
drivers: net: xgene: fix: Oops in linkwatch_fire_event
cls_u32: complete the check for non-forced case in u32_destroy()
net: fec: use reinit_completion() in mdio accessor functions
net: phy: add locking to phy_read_mmd_indirect()/phy_write_mmd_indirect()
vxlan: re-ignore EADDRINUSE from igmp_join
net: compile renesas directory if NET_VENDOR_RENESAS is configured
ip6_gre: release cached dst on tunnel removal
phylib: Make PHYs children of their MDIO bus, not the bus' parent.
can: pcan_usb: don't provide CAN FD bittimings by non-FD adapters
net: Fix RCU splat in af_key
net: bcmgenet: fix uncleaned dma flags
net: bcmgenet: Avoid sleeping in bcmgenet_timeout
netlink: mmap: fix tx type check
Pull nvdimm fixlet from Dan Williams:
"This is a libnvdimm ABI fixup.
I pushed back on this change quite hard given the late date, that it
appears to be purely cosmetic, sysfs is not necessarily meant to be a
user friendly UI, and the kernel interprets the reversed polarity of
the ACPI_NFIT_MEM_ARMED flag correctly. When this flag is set, the
energy source of an NVDIMM is not armed and any new writes to the DIMM
may not be preserved.
However, Bob Moore warned me that it is important to get these things
named correctly wherever they appear otherwise we run the risk of a
less than cautious firmware engineer implementing the polarity the
wrong way. Once a mistake like that escapes into production platforms
the flag becomes useless and we need to move to a new bit position.
Bob has agreed to take a change through ACPICA to rename
ACPI_NFIT_MEM_ARMED to ACPI_NFIT_MEM_NOT_ARMED, and the patch below
from Toshi brings the sysfs representation of these flags in line with
their respective polarities.
Please pull for 4.2 as this is the first kernel to expose the ACPI
NFIT sysfs representation, and this is likely a kernel that firmware
developers will be using for checking out their NVDIMM enabling"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nfit: Clarify memory device state flags strings
Commit f8d9605243 ("sctp: Enforce retransmission limit during shutdown")
fixed a problem with excessive retransmissions in the SHUTDOWN_PENDING by not
resetting the association overall_error_count. This allowed the association
to better enforce assoc.max_retrans limit.
However, the same issue still exists when the association is in SHUTDOWN_RECEIVED
state. In this state, HB-ACKs will continue to reset the overall_error_count
for the association would extend the lifetime of association unnecessarily.
This patch solves this by resetting the overall_error_count whenever the current
state is small then SCTP_STATE_SHUTDOWN_PENDING. As a small side-effect, we
end up also handling SCTP_STATE_SHUTDOWN_ACK_SENT and SCTP_STATE_SHUTDOWN_SENT
states, but they are not really impacted because we disable Heartbeats in those
states.
Fixes: Commit f8d9605243 ("sctp: Enforce retransmission limit during shutdown")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
in sctp_process_asconf(), we get address parameter from the beginning of
the addip params. but we never check if it's really there. if the addr
param is not there, it still can pass sctp_verify_asconf(), then to be
handled by sctp_process_asconf(), it will not be safe.
so add a code in sctp_verify_asconf() to check the address parameter is in
the beginning, or return false to send abort.
note that this can also detect multiple address parameters, and reject it.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
enable pause interrupt should use SPI_CMD_PAUSE_IE MACRO,
so fix it.
Signed-off-by: Leilk Liu <leilk.liu@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Commit d5e136a21b ("clk: samsung: Register
clk provider only after registering its all clocks", merged to v3.17-rc1)
modified a way that driver registers registers to core framework. This
change has not been applied to s5pv210 clocks driver, which has been
merged in parallel to that commit. This patch adds a missing call to
samsung_clk_of_add_provider(), so the driver is operational again.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
CC: stable@vger.kernel.org # v3.17+
Acked-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
ACPI 6.0 NFIT Memory Device State Flags in Table 5-129 defines
NVDIMM status as follows. These bits indicate multiple info,
such as failures, pending event, and capability.
Bit [0] set to 1 to indicate that the previous SAVE to the
Memory Device failed.
Bit [1] set to 1 to indicate that the last RESTORE from the
Memory Device failed.
Bit [2] set to 1 to indicate that platform flush of data to
Memory Device failed. As a result, the restored data content
may be inconsistent even if SAVE and RESTORE do not indicate
failure.
Bit [3] set to 1 to indicate that the Memory Device is observed
to be not armed prior to OSPM hand off. A Memory Device is
considered armed if it is able to accept persistent writes.
Bit [4] set to 1 to indicate that the Memory Device observed
SMART and health events prior to OSPM handoff.
/sys/bus/nd/devices/nmemX/nfit/flags shows this flags info.
The output strings associated with the bits are "save", "restore",
"smart", etc., which can be confusing as they may be interpreted
as positive status, i.e. save succeeded.
Change also the dev_info() message in acpi_nfit_register_dimms()
to be consistent with the sysfs flags strings.
Reported-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Toshi Kani <toshi.kani@hp.com>
[ross: rename 'not_arm' to 'not_armed']
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
[djbw: defer adding bit5, HEALTH_ENABLED, for now]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Some of the stats handling code differs based on SR-IOV support,
and SRIOV support is only available if full-featured firmware is
used.
Do not use vadaptor stats if firmware mode is not set to
full-featured.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The fixed link values parsed from the device tree are stored in
the struct fixed_phy member status. The struct phy_device members
speed, duplex were not updated.
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix arm64 KVM issue when injecting an abort into a 32-bit guest, which
would lead to an illegal exception return at EL2 and a subsequent host
crash.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull amr64 kvm fix from Will Deacon:
"We've uncovered a nasty bug in the arm64 KVM code which allows a badly
behaved 32-bit guest to bring down the host. The fix is simple (it's
what I believe we call a "brown paper bag" bug) and I don't think it
makes sense to sit on this, particularly as Russell ended up
triggering this rather than just somebody noticing a potential problem
by inspection.
Usually arm64 KVM changes would go via Paolo's tree, but he's on
holiday at the moment and the deal is that anything urgent gets
shuffled via the arch trees, so here it is.
Summary:
Fix arm64 KVM issue when injecting an abort into a 32-bit guest, which
would lead to an illegal exception return at EL2 and a subsequent host
crash"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: KVM: Fix host crash when injecting a fault into a 32bit guest
When injecting a fault into a misbehaving 32bit guest, it seems
rather idiotic to also inject a 64bit fault that is only going
to corrupt the guest state. This leads to a situation where we
perform an illegal exception return at EL2 causing the host
to crash instead of killing the guest.
Just fix the stupid bug that has been there from day 1.
Cc: <stable@vger.kernel.org>
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This patch adds a member (cpu_pwr_sample_ratio) of fam15h_power_data,
that represents the ratio of compute unit power accumulator sample
period to the PTSC counter period.
Tsample: compute unit power accumulator sample period
Tref: the performance timestamp counter period
PTSC: performance timestamp counter
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This patch updates description of fam15h_power driver, its scope is
extended to family 16h processsors.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
On Carrizo and later platforms, running_avg_capture bit field is
extended to 4:31 (28 bits) from 4:25.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
We rename fam15h_power_is_internal_node0() function to
should_load_on_this_node(), because it may not be node0 from KV and
on, and they are single-node processors.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
AMD Carrizo(Fam15h, M60h) processors can report power1_crit
(ProcessorPwrWatts) and power1_input (CurrPwrWatts) values.
And this patch adds support for CZ.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
With all features in place, the ARC HS pct block can now be effectively
allowed to be probed/used
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
* split off pmu info into singleton and per-cpu bits
* setup PMU on all cores
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
In times of ARC 700 performance counters didn't have support of
interrupt an so for ARC we only had support of non-sampling events.
Put simply only "perf stat" was functional.
Now with ARC HS we have support of interrupts in performance counters
which this change introduces support of.
ARC performance counters act in the following way in regard of
interrupts generation.
[1] A counter counts starting from value set in PCT_COUNT register pair
[2] Once counter reaches value set in PCT_INT_CNT interrupt is raised
Basic setup look like this:
[1] PCT_COUNT = 0;
[2] PCT_INT_CNT = __limit_value__;
[3] Enable interrupts for that counter and let it run
[4] Let counter reach its limit
[5] Handle interrupt when it happens
Note that PCT HW block is build in CPU core and so ints interrupt
line (which is basically OR of all counters IRQs) is wired directly to
top-level IRQC. That means do de-assert PCT interrupt it's required to
reset IRQs from all counters that have reached their limit values.
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This generalization prepares for support of overflow interrupts.
Hardware event counters on ARC work that way:
Each counter counts from programmed start value (set in
ARC_REG_PCT_COUNT) to a limit value (set in ARC_REG_PCT_INT_CNT) and
once limit value is reached this timer generates an interrupt.
Even though this hardware implementation allows for more flexibility,
in Linux kernel we decided to mimic behavior of other architectures
this way:
[1] Set limit value as half of counter's max value (to allow counter to
run after reaching it limit, see below for more explanation):
---------->8-----------
arc_pmu->max_period = (1ULL << counter_size) / 2 - 1ULL;
---------->8-----------
[2] Set start value as "arc_pmu->max_period - sample_period" and then
count up to the limit
Our event counters don't stop on reaching max value (the one we set in
ARC_REG_PCT_INT_CNT) but continue to count until kernel explicitly
stops each of them.
And setting a limit as half of counter capacity is done to allow
capturing of additional events in between moment when interrupt was
triggered until we're actually processing PMU interrupts. That way
we're trying to be more precise.
For example if we count CPU cycles we keep track of cycles while
running through generic IRQ handling code:
[1] We set counter period as say 100_000 events of type "crun"
[2] Counter reaches that limit and raises its interrupt
[3] Once we get in PMU IRQ handler we read current counter value from
ARC_REG_PCT_SNAP ans see there something like 105_000.
If counters stop on reaching a limit value then we would miss
additional 5000 cycles.
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
The number of counters in PCT can never be more than 32 (while
countable conditions could be 100+) for both ARCompact and ARCv2
And while at it update copyright dates.
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
printk() supports %*ph format specifier for printing a small buffers,
let's use it intead of %02x %02x...
Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Current critical clock list for pistachio enables
only mips and sys clocks by default but there are
also other clocks that are not claimed by anyone and
needs to be enabled by default.
This patch updates the critical clocks that need
to be enabled by default.
Add a separate struct to distinguish the critical clocks
as listed:
1.) core clocks:
a.) mips clock
2.) peripheral system clocks:
a.) sys clock
b.) sys_bus clock
c.) DDR clock
d.) ROM clock
Fixes: b35d7c33419c("CLK: Pistachio: Register core clocks")
Cc: <stable@vger.kernel.org> # 4.1
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
Signed-off-by: Govindraj Raja <govindraj.raja@imgtec.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
.recalc_rate callback for the fractional PLL doesn't take operating
mode into account when calculating PLL rate. This results in
the incorrect PLL rates when PLL is operating in integer mode.
Operating mode of fractional PLL is based on the value of the
fractional divider. Currently it assumes that the PLL will always
be configured in fractional mode which may not be
the case. This may result in the wrong output frequency.
Also vco was calculated based on the current operating mode which
makes no sense because .set_rate is setting operating mode. Instead,
vco should be calculated using PLL settings that are about to be set.
Fixes: 43049b0c83f17("CLK: Pistachio: Add PLL driver")
Cc: <stable@vger.kernel.org> # 4.1
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Zdenko Pulitika <zdenko.pulitika@imgtec.com>
Signed-off-by: Govindraj Raja <govindraj.raja@imgtec.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
PLL enable callbacks are overriding PLL mode (int/frac) and
Noise reduction (on/off) settings set by the boot loader which
results in the incorrect clock rate.
PLL mode and noise reduction are defined by the DSMPD and DACPD bits
of the PLL control register. PLL .enable() callbacks enable PLL
by deasserting all power-down bits of the PLL control register,
including DSMPD and DACPD bits, which is not necessary since
these bits don't actually enable/disable PLL.
This commit fixes the problem by removing DSMPD and DACPD bits
from the "PLL enable" mask.
Fixes: 43049b0c83f17("CLK: Pistachio: Add PLL driver")
Cc: <stable@vger.kernel.org> # 4.1
Reviewed-by: Andrew Bresitcker <abrestic@chromium.org>
Signed-off-by: Zdenko Pulitika <zdenko.pulitika@imgtec.com>
Signed-off-by: Govindraj Raja <govindraj.raja@imgtec.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This commit fixes 32bit integer overflows throughout the pll driver
(i.e. wherever the result of integer multiplication may exceed the
range of u32).
One of the functions affected by this problem is .recalc_rate. It
returns incorrect rate for some pll settings (not for all though)
which in turn results in the incorrect rate setup of pll's child
clocks.
Fixes: 43049b0c83f17("CLK: Pistachio: Add PLL driver")
Cc: <stable@vger.kernel.org> # 4.1
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Zdenko Pulitika <zdenko.pulitika@imgtec.com>
Signed-off-by: Govindraj Raja <govindraj.raja@imgtec.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Pull block fixes from Jens Axboe:
"Two fixes in this pull request:
- The writeback regression fix from Tejun, which has been weeks in
the making. This fixes a case where we would sometimes not issue
writeback when we should have.
- An older fix for a memory corruption issue in mtip32xx. It was
deferred since we wanted a better fix for this (driver should not
have to handle that case), but given the timing, it's better to put
the simple fix in for 4.2 release"
* 'for-linus' of git://git.kernel.dk/linux-block:
mtip32x: fix regression introduced by blk-mq per-hctx flush
writeback: sync_inodes_sb() must write out I_DIRTY_TIME inodes and always call wait_sb_inodes()
This allows drivers for devices connected via SPI to check if the
controller supports a given bits_per_word value during setup.
Currently any BPW value is accepted durings setup, and transfers
are rejected later.
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
The Crucial M500 is known to have issues with queued TRIM commands, the
factory recertified SSDs use a different model number naming convention
which causes them to get ignored by the blacklist.
The new naming convention boils down to: s/Crucial_/FC/
Signed-off-by: Guillermo A. Amaral <g@maral.me>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
Implement magic sysrequest handling for the VT220 terminal (also known as
the Integrated ASCII console on the HMC/SE).
To invoke a "magic sysrequest" function, press "Ctrl+o" followed by a
second character that designates the debugging function.
The handling of the sysrq is scheduled away from the SCLP IRQ context;
because large amounts of sysrq output might fill up the console buffers.
The console might deadlock because it cannot empty the buffers while still
in the receiving IRQ context. This behavior is the same as for the SCLP
console.
Reported-by: Horst Weber <hweber@de.ibm.com>
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Extract the sysrq handling from the ctrlchar_handle() into a separate
function that can be directly used by other users.
Introduce a new sysrq_work structure to embed the work_struct and to
specify the magic sysrq function to be invoked.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
The NUMA system call "__ARCH_WANT" defines are not used by the
Linux kernel, therefore remove them.
Fixes: 9df62adffeb0 ("s390/numa: add core infrastructure")
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
If a 3270 terminal is disconnected and later reconnected again,
it gets an unsolicited device end. This is currently ignored and
you have to hit the clear key to get the screen redrawn.
Add an automatic full redraw of the screen for this case.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
It should be useful to allow 'perf probe' probe at absolute offset of a
target. For example, when (u)probing at a instruction of a shared object
in a embedded system where debuginfo is not avaliable but we know the
offset of that instruction by manually digging.
This patch enables following perf probe command syntax:
# perf probe 0xffffffff811e6615
And
# perf probe /lib/x86_64-linux-gnu/libc-2.19.so 0xeb860
In the above example, we don't need a anchor symbol, so it is possible
to compute absolute addresses using other methods and then use 'perf
probe' to create the probing points.
v1 -> v2:
Drop the leading '+' in cmdline;
Allow uprobing at offset 0x0;
Improve 'perf probe -l' result when uprobe at area without debuginfo.
v2 -> v3:
Split bugfix to a separated patch.
Test result:
# perf probe 0xffffffff8119d175 %ax
# perf probe sys_write %ax
# perf probe /lib64/libc-2.18.so 0x0 %ax
# perf probe /lib64/libc-2.18.so 0x5 %ax
# perf probe /lib64/libc-2.18.so 0xd8e40 %ax
# perf probe /lib64/libc-2.18.so __write %ax
# perf probe /lib64/libc-2.18.so 0xd8e49 %ax
# cat /sys/kernel/debug/tracing/uprobe_events
p:probe_libc/abs_0 /lib64/libc-2.18.so:0x (null) arg1=%ax
p:probe_libc/abs_5 /lib64/libc-2.18.so:0x0000000000000005 arg1=%ax
p:probe_libc/abs_d8e40 /lib64/libc-2.18.so:0x00000000000d8e40 arg1=%ax
p:probe_libc/__write /lib64/libc-2.18.so:0x00000000000d8e40 arg1=%ax
p:probe_libc/abs_d8e49 /lib64/libc-2.18.so:0x00000000000d8e49 arg1=%ax
# cat /sys/kernel/debug/tracing/kprobe_events
p:probe/abs_ffffffff8119d175 0xffffffff8119d175 arg1=%ax
p:probe/sys_write _text+1692016 arg1=%ax
# perf probe -l
Failed to find debug information for address 5
probe:abs_ffffffff8119d175 (on sys_write+5 with arg1)
probe:sys_write (on sys_write with arg1)
probe_libc:__write (on @unix/syscall-template.S:81 in /lib64/libc-2.18.so with arg1)
probe_libc:abs_0 (on 0x0 in /lib64/libc-2.18.so with arg1)
probe_libc:abs_5 (on 0x5 in /lib64/libc-2.18.so with arg1)
probe_libc:abs_d8e40 (on @unix/syscall-template.S:81 in /lib64/libc-2.18.so with arg1)
probe_libc:abs_d8e49 (on __GI___libc_write+9 in /lib64/libc-2.18.so with arg1)
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1440586666-235233-7-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This patch fixes a bug that, when offset is provided but function is
lost, parse_perf_probe_point() will give a "" string as function name,
so the checking code at the end of parse_perf_probe_point() become
useless. For example:
# perf probe +0x1234
Failed to find symbol in kernel
Error: Failed to add events.
After this patch:
# perf probe +0x1234
Semantic error :Offset requires an entry function.
Error: Command Parse Error.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1440586666-235233-6-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
When manually added uprobe point with zero address, 'perf probe -l'
reports error. For example:
# echo p:probe_libc/abs_0 /path/to/lib.bin:0x0 arg1=%ax > \
/sys/kernel/debug/tracing/uprobe_events
# perf probe -l
Error: Failed to show event list.
Probing at 0x0 is possible and useful when lib.bin is not a normal
shared object but is manually mapped. However, in this case kernel
report:
# cat /sys/kernel/debug/tracing/uprobe_events
p:probe_libc/abs_0 /path/to/lib.bin:0x (null) arg1=%ax
This patch supports the above kernel output.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1440586666-235233-5-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
