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Filename Latest commit message Latest commit date
Leonard Crestez f092fa8da2 PM / QoS: Redefine FREQ_QOS_MAX_DEFAULT_VALUE to S32_MAX
commit c6a3aea93571a5393602256d8f74772bd64c8225 upstream.

QOS requests for DEFAULT_VALUE are supposed to be ignored but this is
not the case for FREQ_QOS_MAX. Adding one request for MAX_DEFAULT_VALUE
and one for a real value will cause freq_qos_read_value to unexpectedly
return MAX_DEFAULT_VALUE (-1).

This happens because freq_qos max value is aggregated with PM_QOS_MIN
but FREQ_QOS_MAX_DEFAULT_VALUE is (-1) so it's smaller than other
values.

Fix this by redefining FREQ_QOS_MAX_DEFAULT_VALUE to S32_MAX.

Looking at current users for freq_qos it seems that none of them create
requests for FREQ_QOS_MAX_DEFAULT_VALUE.

Fixes: 77751a466e ("PM: QoS: Introduce frequency QoS")
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reported-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Cc: 5.4+ <stable@vger.kernel.org> # 5.4+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-12-21 11:04:31 +01:00
arch powerpc: Define arch_is_kernel_initmem_freed() for lockdep 2019-12-17 19:56:51 +01:00
block blk-mq: make sure that line break can be printed 2019-12-17 19:56:53 +01:00
certs
crypto crypto: user - fix memory leak in crypto_reportstat 2019-12-13 08:43:11 +01:00
Documentation USB: documentation: flags on usb-storage versus UAS 2019-12-17 19:55:32 +01:00
drivers PCI: Apply Cavium ACS quirk to ThunderX2 and ThunderX3 2019-12-21 11:04:30 +01:00
fs ext4: fix leak of quota reservations 2019-12-17 19:56:53 +01:00
include PM / QoS: Redefine FREQ_QOS_MAX_DEFAULT_VALUE to S32_MAX 2019-12-21 11:04:31 +01:00
init
ipc
kernel workqueue: Fix missing kfree(rescuer) in destroy_workqueue() 2019-12-17 19:56:54 +01:00
lib lib: raid6: fix awk build warnings 2019-12-17 19:56:09 +01:00
LICENSES
mm mm/shmem.c: cast the type of unmap_start to u64 2019-12-17 19:56:51 +01:00
net xdp: obtain the mem_id mutex before trying to remove an entry. 2019-12-18 16:09:10 +01:00
samples
scripts
security
sound ALSA: hda/realtek - Line-out jack doesn't work on a Dell AIO 2019-12-17 19:56:28 +01:00
tools net/tls: Fix return values to avoid ENOTSUPP 2019-12-18 16:08:31 +01:00
usr
virt KVM: arm/arm64: vgic: Don't rely on the wrong pending table 2019-12-13 08:43:00 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.5 2019-12-18 16:09:17 +01:00
README

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

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

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