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Since commit ee6d3dd4ed48 ("driver core: make kobj_type constant.")
the driver core allows the usage of const struct kobj_type.
Take advantage of this to constify the structure definition to prevent
modification at runtime.
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The remove function first frees the clks and only then calls
cpufreq_unregister_driver(). If one of the cpufreq callbacks is called
just before cpufreq_unregister_driver() is run, the freed clks might be
used.
Fixes: 6601b8030de3 ("davinci: add generic CPUFreq driver for DaVinci")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The new epp support causes warnings about three separate
but related bugs:
1) failing before allocation should just return an error:
drivers/cpufreq/amd-pstate.c:951:6: error: variable 'ret' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized]
if (!dev)
^~~~
drivers/cpufreq/amd-pstate.c:1018:9: note: uninitialized use occurs here
return ret;
^~~
2) wrong variable to store return code:
drivers/cpufreq/amd-pstate.c:963:6: error: variable 'ret' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized]
if (rc)
^~
drivers/cpufreq/amd-pstate.c:1019:9: note: uninitialized use occurs here
return ret;
^~~
drivers/cpufreq/amd-pstate.c:963:2: note: remove the 'if' if its condition is always false
if (rc)
^~~~~~~
3) calling amd_pstate_set_epp() in cleanup path after determining
that it should not be called:
drivers/cpufreq/amd-pstate.c:1055:6: error: variable 'epp' is used uninitialized whenever 'if' condition is true [-Werror,-Wsometimes-uninitialized]
if (cpudata->epp_policy == cpudata->policy)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/cpufreq/amd-pstate.c:1080:30: note: uninitialized use occurs here
amd_pstate_set_epp(cpudata, epp);
^~~
All three are trivial to fix, but most likely there are additional bugs
in this function when the error handling was not really tested.
Fixes: ffa5096a7c33 ("cpufreq: amd-pstate: implement Pstate EPP support for the AMD processors")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Reviewed-by: Yuan Perry <Perry.Yuan@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
All but a few drivers ignore the return value of
cpufreq_unregister_driver(). Those few that don't only call it after
cpufreq_register_driver() succeeded, in which case the call doesn't
fail.
Make the function return no value and add a WARN_ON for the case that
the function is called in an invalid situation (i.e. without a previous
successful call to cpufreq_register_driver()).
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com> # brcmstb-avs-cpufreq.c
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
- the incorrect value returned by cpufreq driver's ->get() callback for
Qualcomm platforms (Douglas Anderson).
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Merge tag 'cpufreq-arm-fixes-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm
Pull an ARM cpufreq fix for 6.2-rc8 from Viresh Kumar:
- Fix the incorrect value returned by cpufreq driver's ->get() callback for
Qualcomm platforms (Douglas Anderson).
* tag 'cpufreq-arm-fixes-6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm:
cpufreq: qcom-hw: Fix cpufreq_driver->get() for non-LMH systems
On a sc7180-based Chromebook, when I go to
/sys/devices/system/cpu/cpu0/cpufreq I can see:
cpuinfo_cur_freq:2995200
cpuinfo_max_freq:1804800
scaling_available_frequencies:300000 576000 ... 1708800 1804800
scaling_cur_freq:1804800
scaling_max_freq:1804800
As you can see the `cpuinfo_cur_freq` is bogus. It turns out that this
bogus info started showing up as of commit c72cf0cb1d77 ("cpufreq:
qcom-hw: Fix the frequency returned by cpufreq_driver->get()"). That
commit seems to assume that everyone is on the LMH bandwagon, but
sc7180 isn't.
Let's go back to the old code in the case where LMH isn't used.
Fixes: c72cf0cb1d77 ("cpufreq: qcom-hw: Fix the frequency returned by cpufreq_driver->get()")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
[ Viresh: Fixed the 'fixes' tag ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Here are some small USB fixes for 6.2-rc7 that resolve some reported
problems. These include:
- gadget driver fixes
- dwc3 driver fix
- typec driver fix
- MAINTAINERS file update.
All of these have been in linux-next with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some small USB fixes that resolve some reported problems.
These include:
- gadget driver fixes
- dwc3 driver fix
- typec driver fix
- MAINTAINERS file update.
All of these have been in linux-next with no reported problems"
* tag 'usb-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: typec: ucsi: Don't attempt to resume the ports before they exist
usb: gadget: udc: do not clear gadget driver.bus
usb: gadget: f_uac2: Fix incorrect increment of bNumEndpoints
usb: gadget: f_fs: Fix unbalanced spinlock in __ffs_ep0_queue_wait
usb: dwc3: qcom: enable vbus override when in OTG dr-mode
MAINTAINERS: Add myself as UVC Gadget Maintainer
Here are some small serial and vt fixes for 6.2-rc7. These include:
- 8250 driver fixes relating to dma issues
- stm32 serial driver fix for threaded irqs
- vc_screen bugfix for reported problems.
All have been in linux-next for a while with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
"Here are some small serial and vt fixes. These include:
- 8250 driver fixes relating to dma issues
- stm32 serial driver fix for threaded irqs
- vc_screen bugfix for reported problems.
All have been in linux-next for a while with no reported problems"
* tag 'tty-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF
serial: 8250_dma: Fix DMA Rx rearm race
serial: 8250_dma: Fix DMA Rx completion race
serial: stm32: Merge hard IRQ and threaded IRQ handling into single IRQ handler
Here are a number of small char/misc/whatever driver fixes for 6.2-rc7.
They include:
- IIO driver fixes for some reported problems
- nvmem driver fixes
- fpga driver fixes
- debugfs memory leak fix in the hv_balloon and irqdomain code
(irqdomain change was acked by the maintainer.)
All have been in linux-next with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are a number of small char/misc/whatever driver fixes. They
include:
- IIO driver fixes for some reported problems
- nvmem driver fixes
- fpga driver fixes
- debugfs memory leak fix in the hv_balloon and irqdomain code
(irqdomain change was acked by the maintainer)
All have been in linux-next with no reported problems"
* tag 'char-misc-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (33 commits)
kernel/irq/irqdomain.c: fix memory leak with using debugfs_lookup()
HV: hv_balloon: fix memory leak with using debugfs_lookup()
nvmem: qcom-spmi-sdam: fix module autoloading
nvmem: core: fix return value
nvmem: core: fix cell removal on error
nvmem: core: fix device node refcounting
nvmem: core: fix registration vs use race
nvmem: core: fix cleanup after dev_set_name()
nvmem: core: remove nvmem_config wp_gpio
nvmem: core: initialise nvmem->id early
nvmem: sunxi_sid: Always use 32-bit MMIO reads
nvmem: brcm_nvram: Add check for kzalloc
iio: imu: fxos8700: fix MAGN sensor scale and unit
iio: imu: fxos8700: remove definition FXOS8700_CTRL_ODR_MIN
iio: imu: fxos8700: fix failed initialization ODR mode assignment
iio: imu: fxos8700: fix incorrect ODR mode readback
iio: light: cm32181: Fix PM support on system with 2 I2C resources
iio: hid: fix the retval in gyro_3d_capture_sample
iio: hid: fix the retval in accel_3d_capture_sample
iio: imu: st_lsm6dsx: fix build when CONFIG_IIO_TRIGGERED_BUFFER=m
...
- Check font size in fbcon, reported by UBSAN and syzbot
- Use backlight helpers in various fbdev drivers
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Merge tag 'fbdev-for-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev fixes from Helge Deller:
- fix fbcon to prevent fonts bigger than 32x32 pixels to avoid
overflows reported by syzbot
- switch omapfb to use kstrtobool()
- switch some fbdev drivers to use the backlight helpers
* tag 'fbdev-for-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
fbcon: Check font dimension limits
fbdev: omapfb: Use kstrtobool() instead of strtobool()
fbdev: fbmon: fix function name in kernel-doc
fbdev: atmel_lcdfb: Rework backlight status updates
fbdev: riva: Use backlight helper
fbdev: omapfb: panel-dsi-cm: Use backlight helper
fbdev: nvidia: Use backlight helper
fbdev: mx3fb: Use backlight helper
fbdev: radeon: Use backlight helper
fbdev: atyfb: Use backlight helper
fbdev: aty128fb: Use backlight helper
a #VC exception in SEV-ES guests at the wrong place in the NMI handling path
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Merge tag 'x86_urgent_for_v6.2_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Borislav Petkov:
- Prevent the compiler from reordering accesses to debug regs which
could cause a #VC exception in SEV-ES guests at the wrong place in
the NMI handling path
* tag 'x86_urgent_for_v6.2_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/debug: Fix stack recursion caused by wrongly ordered DR7 accesses
- Fix a few objtool warnings since we recently enabled objtool.
- Fix a deadlock with the hash MMU vs perf record.
- Fix perf profiling of asynchronous interrupt handlers.
- Revert the IMC PMU nest_init_lock to being a mutex.
- Two commits fixing problems with the kexec_file FDT size estimation.
- Two commits fixing problems with strict RWX vs kernels running at non-zero.
- Reconnect tlb_flush() to hash__tlb_flush()
Thanks to: Kajol Jain, Nicholas Piggin, Sachin Sant Sathvika Vasireddy, Sourabh Jain.
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Merge tag 'powerpc-6.2-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"It's a bit of a big batch for rc6, but just because I didn't send any
fixes the last week or two while I was on vacation, next week should
be quieter:
- Fix a few objtool warnings since we recently enabled objtool.
- Fix a deadlock with the hash MMU vs perf record.
- Fix perf profiling of asynchronous interrupt handlers.
- Revert the IMC PMU nest_init_lock to being a mutex.
- Two commits fixing problems with the kexec_file FDT size
estimation.
- Two commits fixing problems with strict RWX vs kernels running at
non-zero.
- Reconnect tlb_flush() to hash__tlb_flush()
Thanks to Kajol Jain, Nicholas Piggin, Sachin Sant Sathvika Vasireddy,
and Sourabh Jain"
* tag 'powerpc-6.2-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s: Reconnect tlb_flush() to hash__tlb_flush()
powerpc/kexec_file: Count hot-pluggable memory in FDT estimate
powerpc/64s/radix: Fix RWX mapping with relocated kernel
powerpc/64s/radix: Fix crash with unaligned relocated kernel
powerpc/kexec_file: Fix division by zero in extra size estimation
powerpc/imc-pmu: Revert nest_init_lock to being a mutex
powerpc/64: Fix perf profiling asynchronous interrupt handlers
powerpc/64s: Fix local irq disable when PMIs are disabled
powerpc/kvm: Fix unannotated intra-function call warning
powerpc/85xx: Fix unannotated intra-function call warning
Drivers:
- efi: make WAKEUP services optional
- sunplus: fix format string warning
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Merge tag 'rtc-6.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC fixes from Alexandre Belloni:
"Here are a few fixes for 6.2. The EFI one is the most important as it
allows some RTCs to actually work. The other two are warnings that are
worth fixing.
- efi: make WAKEUP services optional
- sunplus: fix format string warning"
* tag 'rtc-6.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux:
rtc: sunplus: fix format string for printing resource
dt-bindings: rtc: qcom-pm8xxx: allow 'wakeup-source' property
rtc: efi: Enable SET/GET WAKEUP services as optional
- Fix two bugs (for building and for signing) when CONFIG_MODULE_SIG_KEY
contains PKCS#11 URI.
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Merge tag 'kbuild-fixes-v6.2-4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Fix two bugs (for building and for signing) when MODULE_SIG_KEY
contains a PKCS#11 URI
* tag 'kbuild-fixes-v6.2-4' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: modinst: Fix build error when CONFIG_MODULE_SIG_KEY is a PKCS#11 URI
certs: Fix build error when PKCS#11 URI contains semicolon
- Yet another fix for non-CPU accesses to the memory backing
the VGICv3 subsystem
- A set of fixes for the setlftest checking for the S1PTW
behaviour after the fix that went in ealier in the cycle
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"ARM64:
- Yet another fix for non-CPU accesses to the memory backing the
VGICv3 subsystem
- A set of fixes for the setlftest checking for the S1PTW behaviour
after the fix that went in ealier in the cycle"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: selftests: aarch64: Test read-only PT memory regions
KVM: selftests: aarch64: Fix check of dirty log PT write
KVM: selftests: aarch64: Do not default to dirty PTE pages on all S1PTWs
KVM: selftests: aarch64: Relax userfaultfd read vs. write checks
KVM: arm64: Allow no running vcpu on saving vgic3 pending table
KVM: arm64: Allow no running vcpu on restoring vgic3 LPI pending status
KVM: arm64: Add helper vgic_write_guest_lock()
- Fix PTRACE_GETREGS/PTRACE_SETREGS for 32-bit userspace on 64-bit kernel
- pdc_iodc_print() dropped chars for newline in strings
- Drop constants in favour of PRIV_USER
- use safer strscpy() function in pdc_stable driver
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Merge tag 'parisc-for-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc architecture fixes from Helge Deller:
- Fix PTRACE_GETREGS/PTRACE_SETREGS for 32-bit userspace on a 64-bit
kernel
- pdc_iodc_print() dropped chars for newline in strings
- Drop constants in favour of PRIV_USER
- use safer strscpy() function in pdc_stable driver
* tag 'parisc-for-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Wire up PTRACE_GETREGS/PTRACE_SETREGS for compat case
parisc: Replace hardcoded value with PRIV_USER constant in ptrace.c
parisc: Fix return code of pdc_iodc_print()
parisc: pdc_stable: use strscpy() to instead of strncpy()
The old mailing list for OpenRISC died due to some infrastructure issues
and the people in charge decided not to keep it running. We have
migrated this and the users over to kernel.org infrastructure.
Sending this out now to avoid kernel developers getting lots of bounced
mails for using the old list.
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Merge tag 'for-linus' of https://github.com/openrisc/linux
Pull OpenRISC mailing list update from Stafford Horne:
"The old mailing list for OpenRISC died due to some infrastructure
issues and the people in charge decided not to keep it running. We
have migrated this and the users over to kernel.org infrastructure.
Sending this out now to avoid kernel developers getting lots of
bounced mails for using the old list"
* tag 'for-linus' of https://github.com/openrisc/linux:
MAINTAINERS: Update OpenRISC mailing list
- Yet another fix for non-CPU accesses to the memory backing
the VGICv3 subsystem
- A set of fixes for the setlftest checking for the S1PTW
behaviour after the fix that went in ealier in the cycle
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Merge tag 'kvmarm-fixes-6.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 6.2, take #3
- Yet another fix for non-CPU accesses to the memory backing
the VGICv3 subsystem
- A set of fixes for the setlftest checking for the S1PTW
behaviour after the fix that went in ealier in the cycle
The amd-pstate driver supports switching working modes at runtime.
Users can view and change modes by interacting with the "status" sysfs
attribute.
1) check driver mode:
$ cat /sys/devices/system/cpu/amd-pstate/status
2) switch mode:
`# echo "passive" | sudo tee /sys/devices/system/cpu/amd-pstate/status`
or
`# echo "active" | sudo tee /sys/devices/system/cpu/amd-pstate/status`
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
replace the sprintf with a more generic sysfs_emit function
No intended potential function impact
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
AMD Pstate driver support another firmware based autonomous mode
with "amd_pstate=active" added to the kernel command line.
In autonomous mode SMU firmware decides frequencies at runtime
based on workload utilization, usage in other IPs, infrastructure
limits such as power, thermals and so on.
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The amd-pstate driver has two operation modes supported:
* CPPC Autonomous (active) mode
* CPPC non-autonomous (passive) mode.
active mode and passive mode can be chosen by different kernel parameters.
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
While amd-pstate driver was loaded with specific driver mode, it will
need to check which mode is enabled for the pstate driver,add this sysfs
entry to show the current status
$ cat /sys/devices/system/cpu/amd-pstate/status
active
Meanwhile, user can switch the pstate driver mode with writing mode
string to sysfs entry as below.
Enable passive mode:
$ sudo bash -c "echo passive > /sys/devices/system/cpu/amd-pstate/status"
Enable active mode (EPP driver mode):
$ sudo bash -c "echo active > /sys/devices/system/cpu/amd-pstate/status"
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
add suspend and resume support for the AMD processors by amd_pstate_epp
driver instance.
When the CPPC is suspended, EPP driver will set EPP profile to 'power'
profile and set max/min perf to lowest perf value.
When resume happens, it will restore the MSR registers with
previous cached value.
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mario Limonciello <Mario.Limonciello@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Adds online and offline driver callback support to allow cpu cores go
offline and help to restore the previous working states when core goes
back online later for EPP driver mode.
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mario Limonciello <Mario.Limonciello@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Add EPP driver support for AMD SoCs which support a dedicated MSR for
CPPC. EPP is used by the DPM controller to configure the frequency that
a core operates at during short periods of activity.
The SoC EPP targets are configured on a scale from 0 to 255 where 0
represents maximum performance and 255 represents maximum efficiency.
The amd-pstate driver exports profile string names to userspace that are
tied to specific EPP values.
The balance_performance string (0x80) provides the best balance for
efficiency versus power on most systems, but users can choose other
strings to meet their needs as well.
$ cat /sys/devices/system/cpu/cpufreq/policy0/energy_performance_available_preferences
default performance balance_performance balance_power power
$ cat /sys/devices/system/cpu/cpufreq/policy0/energy_performance_preference
balance_performance
To enable the driver,it needs to add `amd_pstate=active` to kernel
command line and kernel will load the active mode epp driver
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mario Limonciello <Mario.Limonciello@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The amd-pstate driver may support multiple working modes.
Introduce a variable to keep track of which mode is currently enabled.
Here we use cppc_state var to indicate which mode is enabled.
This change will help to simplify the the amd_pstate_param() to choose
which mode used for the following driver registration.
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The amd-pstate driver supports a feature called energy performance
preference (EPP). Add information to the documentation to explain
how users can interact with the sysfs files for this feature.
1) See all EPP profiles
$ sudo cat /sys/devices/system/cpu/cpu0/cpufreq/energy_performance_available_preferences
default performance balance_performance balance_power power
2) Check current EPP profile
$ sudo cat /sys/devices/system/cpu/cpu0/cpufreq/energy_performance_preference
performance
3) Set new EPP profile
$ sudo bash -c "echo power > /sys/devices/system/cpu/cpu0/cpufreq/energy_performance_preference"
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Add support for setting and querying EPP preferences to the generic
CPPC driver. This enables downstream drivers such as amd-pstate to discover
and use these values.
Downstream drivers that want to use the new symbols cppc_get_epp_caps
and cppc_set_epp_perf for querying and setting EPP preferences will need
to call cppc_set_epp_perf to enable the EPP function firstly.
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Tested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Merge tag 'block-6.2-2023-02-03' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
"A bit bigger than I'd like at this point, but mostly a bunch of little
fixes. In detail:
- NVMe pull request via Christoph:
- Fix a missing queue put in nvmet_fc_ls_create_association
(Amit Engel)
- Clear queue pointers on tag_set initialization failure
(Maurizio Lombardi)
- Use workqueue dedicated to authentication (Shin'ichiro
Kawasaki)
- Fix for an overflow in ublk (Liu)
- Fix for leaking a queue reference in block cgroups (Ming)
- Fix for a use-after-free in BFQ (Yu)"
* tag 'block-6.2-2023-02-03' of git://git.kernel.dk/linux:
blk-cgroup: don't update io stat for root cgroup
nvme-auth: use workqueue dedicated to authentication
nvme: clear the request_queue pointers on failure in nvme_alloc_io_tag_set
nvme: clear the request_queue pointers on failure in nvme_alloc_admin_tag_set
nvme-fc: fix a missing queue put in nvmet_fc_ls_create_association
block: Fix the blk_mq_destroy_queue() documentation
block: ublk: extending queue_size to fix overflow
block, bfq: fix uaf for bfqq in bic_set_bfqq()
filesystem after running into a case of an invalid snap trace. The
root cause of this metadata corruption is still being investigated but
it appears to be stemming from the MDS. As such, this is the best we
can do for now.
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Merge tag 'ceph-for-6.2-rc7' of https://github.com/ceph/ceph-client
Pull ceph fix from Ilya Dryomov:
"A safeguard to prevent the kernel client from further damaging the
filesystem after running into a case of an invalid snap trace.
The root cause of this metadata corruption is still being investigated
but it appears to be stemming from the MDS. As such, this is the best
we can do for now"
* tag 'ceph-for-6.2-rc7' of https://github.com/ceph/ceph-client:
ceph: blocklist the kclient when receiving corrupted snap trace
ceph: move mount state enum to super.h
* A build fix to avoid static branches in cpu_relax(), which greatly
inflates the jump tables and breaks at least
CONFIG_CC_OPTIMIZE_FOR_SIZE=y.
* A fix for a kernel panic when probing impossible instruction
positions.
* A fix to disable unwind tables, which are enabled by default for
GCC-13 and result in unhandled relocations in modules.
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Merge tag 'riscv-for-linus-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A build fix to avoid static branches in cpu_relax(), which greatly
inflates the jump tables and breaks at least
CONFIG_CC_OPTIMIZE_FOR_SIZE=y.
- A fix for a kernel panic when probing impossible instruction
positions.
- A fix to disable unwind tables, which are enabled by default for
GCC-13 and result in unhandled relocations in modules.
* tag 'riscv-for-linus-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: disable generation of unwind tables
riscv: kprobe: Fixup kernel panic when probing an illegal position
riscv: Fix build with CONFIG_CC_OPTIMIZE_FOR_SIZE=y
dma-fence:
- fix signaling bit for private fences
panel:
- boe-tv101wum-nl6 disable fix
nouveau:
- gm20b acr regression fix
- tu102 scrub status fix
- tu102 wait for firmware fix
i915:
- Fixes for potential use-after-free and double-free
- GuC locking and refcount fixes
- Display's reference clock value fix
amdgpu:
- GC11 fixes
- DCN 3.1.4 fixes
- NBIO 4.3 fix
- DCN 3.2 fixes
- Properly handle additional cases where DCN is not supported
- SMU13 fixes
vc4:
- fix CEC adapter names
ssd130x:
- fix display init regression
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Merge tag 'drm-fixes-2023-02-03' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"A few more fixes this week, a bit more spread out though.
We have a bunch of nouveau regression and stabilisation fixes, along
with usual amdgpu, and i915. Otherwise just some minor misc ones:
dma-fence:
- fix signaling bit for private fences
panel:
- boe-tv101wum-nl6 disable fix
nouveau:
- gm20b acr regression fix
- tu102 scrub status fix
- tu102 wait for firmware fix
i915:
- Fixes for potential use-after-free and double-free
- GuC locking and refcount fixes
- Display's reference clock value fix
amdgpu:
- GC11 fixes
- DCN 3.1.4 fixes
- NBIO 4.3 fix
- DCN 3.2 fixes
- Properly handle additional cases where DCN is not supported
- SMU13 fixes
vc4:
- fix CEC adapter names
ssd130x:
- fix display init regression"
* tag 'drm-fixes-2023-02-03' of git://anongit.freedesktop.org/drm/drm: (23 commits)
drm/amd/display: Properly handle additional cases where DCN is not supported
drm/amdgpu: Enable vclk dclk node for gc11.0.3
drm/amd: Fix initialization for nbio 4.3.0
drm/amdgpu: enable HDP SD for gfx 11.0.3
drm/amd/pm: drop unneeded dpm features disablement for SMU 13.0.4/11
drm/amd/display: Reset DMUB mailbox SW state after HW reset
drm/amd/display: Unassign does_plane_fit_in_mall function from dcn3.2
drm/amd/display: Adjust downscaling limits for dcn314
drm/amd/display: Add missing brackets in calculation
drm/amdgpu: update wave data type to 3 for gfx11
drm/panel: boe-tv101wum-nl6: Ensure DSI writes succeed during disable
drm/nouveau/acr/gm20b: regression fixes
drm/nouveau/fb/tu102-: fix register used to determine scrub status
drm/nouveau/devinit/tu102-: wait for GFW_BOOT_PROGRESS == COMPLETED
drm/i915/adlp: Fix typo for reference clock
drm/i915: Fix potential bit_17 double-free
drm/i915: Fix up locking around dumping requests lists
drm/i915: Fix request ref counting during error capture & debugfs dump
drm/i915/guc: Fix locking when searching for a hung request
drm/i915: Avoid potential vm use-after-free
...
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Merge tag 'mm-hotfixes-stable-2023-02-02-19-24-2' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"25 hotfixes, mainly for MM. 13 are cc:stable"
* tag 'mm-hotfixes-stable-2023-02-02-19-24-2' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (26 commits)
mm: memcg: fix NULL pointer in mem_cgroup_track_foreign_dirty_slowpath()
Kconfig.debug: fix the help description in SCHED_DEBUG
mm/swapfile: add cond_resched() in get_swap_pages()
mm: use stack_depot_early_init for kmemleak
Squashfs: fix handling and sanity checking of xattr_ids count
sh: define RUNTIME_DISCARD_EXIT
highmem: round down the address passed to kunmap_flush_on_unmap()
migrate: hugetlb: check for hugetlb shared PMD in node migration
mm: hugetlb: proc: check for hugetlb shared PMD in /proc/PID/smaps
mm/MADV_COLLAPSE: catch !none !huge !bad pmd lookups
Revert "mm: kmemleak: alloc gray object for reserved region with direct map"
freevxfs: Kconfig: fix spelling
maple_tree: should get pivots boundary by type
.mailmap: update e-mail address for Eugen Hristev
mm, mremap: fix mremap() expanding for vma's with vm_ops->close()
squashfs: harden sanity check in squashfs_read_xattr_id_table
ia64: fix build error due to switch case label appearing next to declaration
mm: multi-gen LRU: fix crash during cgroup migration
Revert "mm: add nodes= arg to memory.reclaim"
zsmalloc: fix a race with deferred_handles storing
...
When iterating on a linked list, a result of memremap is dereferenced
without checking it for NULL.
This patch adds a check that falls back on allocating a new page in
case memremap doesn't succeed.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 18df7577adae ("efi/memreserve: deal with memreserve entries in unmapped memory")
Signed-off-by: Anton Gusev <aagusev@ispras.ru>
[ardb: return -ENOMEM instead of breaking out of the loop]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time. To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable <stable@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230202151554.2310273-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time. To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Dexuan Cui <decui@microsoft.com>
Fixes: d180e0a1be6c ("Drivers: hv: Create debugfs file with hyper-v balloon usage information")
Cc: stable <stable@kernel.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com>
Link: https://lore.kernel.org/r/20230202140918.2289522-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
regression breaking the display in ssd130x, a signaling bit issue in
dma-fence, a couple of fixes in nouveau for Turing and Ampere, and a
disable fix for the boe-tv101wum-nl6 panel.
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Merge tag 'drm-misc-fixes-2023-02-02' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
A fix for a non-unique CEC adapter name registration in vc4, a
regression breaking the display in ssd130x, a signaling bit issue in
dma-fence, a couple of fixes in nouveau for Turing and Ampere, and a
disable fix for the boe-tv101wum-nl6 panel.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20230202085724.pz22m7bmei3wyuzp@houat
A single patch for rc7, from me, to fix device probe issues with some
combination of adapters & devices that do not report a current ling
speed, leading to device probe failures if a link speed was not
previously reported and saved.
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Merge tag 'ata-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull libata fix from Damien Le Moal:
"Fix device probe issues with some combination of adapters & devices
that do not report a current link speed, leading to device probe
failures if a link speed was not previously reported and saved (me)"
* tag 'ata-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
ata: libata: Fix sata_down_spd_limit() when no link speed is reported
Current release - regressions:
- phy: fix null-deref in phy_attach_direct
- mac802154: fix possible double free upon parsing error
Previous releases - regressions:
- bpf: preserve reg parent/live fields when copying range info,
prevent mis-verification of programs as safe
- ip6: fix GRE tunnels not generating IPv6 link local addresses
- phy: dp83822: fix null-deref on DP83825/DP83826 devices
- sctp: do not check hb_timer.expires when resetting hb_timer
- eth: mtk_sock: fix SGMII configuration after phylink conversion
Previous releases - always broken:
- eth: xdp: execute xdp_do_flush() before napi_complete_done()
- skb: do not mix page pool and page referenced frags in GRO
- bpf:
- fix a possible task gone issue with bpf_send_signal[_thread]()
- fix an off-by-one bug in bpf_mem_cache_idx() to select
the right cache
- add missing btf_put to register_btf_id_dtor_kfuncs
- sockmap: fon't let sock_map_{close,destroy,unhash} call itself
- gso: fix null-deref in skb_segment_list()
- mctp: purge receive queues on sk destruction
- fix UaF caused by accept on already connected socket in exotic
socket families
- tls: don't treat list head as an entry in tls_is_tx_ready()
- netfilter: br_netfilter: disable sabotage_in hook after first
suppression
- wwan: t7xx: fix runtime PM implementation
Misc:
- MAINTAINERS: spring cleanup of networking maintainers
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from bpf, can and netfilter.
Current release - regressions:
- phy: fix null-deref in phy_attach_direct
- mac802154: fix possible double free upon parsing error
Previous releases - regressions:
- bpf: preserve reg parent/live fields when copying range info,
prevent mis-verification of programs as safe
- ip6: fix GRE tunnels not generating IPv6 link local addresses
- phy: dp83822: fix null-deref on DP83825/DP83826 devices
- sctp: do not check hb_timer.expires when resetting hb_timer
- eth: mtk_sock: fix SGMII configuration after phylink conversion
Previous releases - always broken:
- eth: xdp: execute xdp_do_flush() before napi_complete_done()
- skb: do not mix page pool and page referenced frags in GRO
- bpf:
- fix a possible task gone issue with bpf_send_signal[_thread]()
- fix an off-by-one bug in bpf_mem_cache_idx() to select the right
cache
- add missing btf_put to register_btf_id_dtor_kfuncs
- sockmap: fon't let sock_map_{close,destroy,unhash} call itself
- gso: fix null-deref in skb_segment_list()
- mctp: purge receive queues on sk destruction
- fix UaF caused by accept on already connected socket in exotic
socket families
- tls: don't treat list head as an entry in tls_is_tx_ready()
- netfilter: br_netfilter: disable sabotage_in hook after first
suppression
- wwan: t7xx: fix runtime PM implementation
Misc:
- MAINTAINERS: spring cleanup of networking maintainers"
* tag 'net-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (65 commits)
mtk_sgmii: enable PCS polling to allow SFP work
net: mediatek: sgmii: fix duplex configuration
net: mediatek: sgmii: ensure the SGMII PHY is powered down on configuration
MAINTAINERS: update SCTP maintainers
MAINTAINERS: ipv6: retire Hideaki Yoshifuji
mailmap: add John Crispin's entry
MAINTAINERS: bonding: move Veaceslav Falico to CREDITS
net: openvswitch: fix flow memory leak in ovs_flow_cmd_new
net: ethernet: mtk_eth_soc: disable hardware DSA untagging for second MAC
virtio-net: Keep stop() to follow mirror sequence of open()
selftests: net: udpgso_bench_tx: Cater for pending datagrams zerocopy benchmarking
selftests: net: udpgso_bench: Fix racing bug between the rx/tx programs
selftests: net: udpgso_bench_rx/tx: Stop when wrong CLI args are provided
selftests: net: udpgso_bench_rx: Fix 'used uninitialized' compiler warning
can: mcp251xfd: mcp251xfd_ring_set_ringparam(): assign missing tx_obj_num_coalesce_irq
can: isotp: split tx timer into transmission and timeout
can: isotp: handle wait_event_interruptible() return values
can: raw: fix CAN FD frame transmissions over CAN XL devices
can: j1939: fix errant WARN_ON_ONCE in j1939_session_deactivate
hv_netvsc: Fix missed pagebuf entries in netvsc_dma_map/unmap()
...
This KUnit fixes update for Linux 6.2-rc7 consists of 3 fixes to bugs
that cause kernel crash, link error during build, and a third to fix
kunit_test_init_section_suites() extra indirection issue.
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Merge tag 'linux-kselftest-kunit-fixes-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull KUnit fixes from Shuah Khan:
"Three fixes to bugs that cause kernel crash, link error during build,
and a third to fix kunit_test_init_section_suites() extra indirection
issue"
* tag 'linux-kselftest-kunit-fixes-6.2-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: fix kunit_test_init_section_suites(...)
kunit: fix bug in KUNIT_EXPECT_MEMEQ
kunit: Export kunit_running()
The majority of bugfixes is once more for the NXP i.MX platform,
addressing issue with i.MX8M (UART, watchdog and ethernet) as well as
imx8dxl power button and the USB modem on an imx7 board. The reason that
i.MX always shows up here is obviously not that they are more buggy than
the others, but they have the most boards and are good about getting
fixes in quickly.
The other DT fixes are for the Nuvoton wpcm450 flash controller and
the i2c mux on an ASpeed board.
Lastly, there are updates to the MAINTAINERS entries for Mediatek,
AMD/Seattle and NXP SoCs, as well as a lone code fix for error
handling in the allwinner "rsb" bus driver.
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Merge tag 'soc-fixes-6.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"The majority of bugfixes is once more for the NXP i.MX platform,
addressing issue with i.MX8M (UART, watchdog and ethernet) as well as
imx8dxl power button and the USB modem on an imx7 board.
The reason that i.MX always shows up here is obviously not that they
are more buggy than the others, but they have the most boards and are
good about getting fixes in quickly.
The other DT fixes are for the Nuvoton wpcm450 flash controller and
the i2c mux on an ASpeed board.
Lastly, there are updates to the MAINTAINERS entries for Mediatek,
AMD/Seattle and NXP SoCs, as well as a lone code fix for error
handling in the allwinner 'rsb' bus driver"
* tag 'soc-fixes-6.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
ARM: dts: wpcm450: Add nuvoton,shm = <&shm> to FIU node
MAINTAINERS: Update entry for MediaTek SoC support
MAINTAINERS: amd: drop inactive Brijesh Singh
ARM: dts: imx7d-smegw01: Fix USB host over-current polarity
arm64: dts: imx8mm-verdin: Do not power down eth-phy
MAINTAINERS: match freescale ARM64 DT directory in i.MX entry
arm64: dts: imx8mm: Fix pad control for UART1_DTE_RX
ARM: dts: aspeed: Fix pca9849 compatible
arm64: dts: freescale: imx8dxl: fix sc_pwrkey's property name linux,keycode
arm64: dts: imx8m-venice: Remove incorrect 'uart-has-rtscts'
arm64: dts: imx8mm: Reinstate GPIO watchdog always-running property on eDM SBC
bus: sunxi-rsb: Fix error handling in sunxi_rsb_init()
- With CONFIG_VMAP_STACK enabled it is not possible to load the s390
specific diag288_wdt watchdog module. Reason is that a pointer to a
string is passed to an inline assembly; this string however is located on
the stack, while the instruction within the inline assembly expects a
physicial address. Fix this by copying the string to a kmalloc'ed buffer.
- The diag288_wdt watchdog module does not indicate that it accesses memory
from an inline assembly, which it does. Add "memory" to the clobber list
to prevent the compiler from optimizing code incorrectly away.
- Pass size of the uncompressed kernel image to __decompress() call.
Otherwise the kernel image decompressor may corrupt/overwrite an
initrd. This was reported to happen on s390 after commit 2aa14b1ab2c4
("zstd: import usptream v1.5.2").
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Merge tag 's390-6.2-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Heiko Carstens:
- With CONFIG_VMAP_STACK enabled it is not possible to load the s390
specific diag288_wdt watchdog module. The reason is that a pointer to
a string is passed to an inline assembly; this string however is
located on the stack, while the instruction within the inline
assembly expects a physicial address. Fix this by copying the string
to a kmalloc'ed buffer.
- The diag288_wdt watchdog module does not indicate that it accesses
memory from an inline assembly, which it does. Add "memory" to the
clobber list to prevent the compiler from optimizing code incorrectly
away.
- Pass size of the uncompressed kernel image to __decompress() call.
Otherwise the kernel image decompressor may corrupt/overwrite an
initrd. This was reported to happen on s390 after commit 2aa14b1ab2c4
("zstd: import usptream v1.5.2").
* tag 's390-6.2-4' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/decompressor: specify __decompress() buf len to avoid overflow
watchdog: diag288_wdt: fix __diag288() inline assembly
watchdog: diag288_wdt: do not use stack buffers for hardware data
