| Age | Commit message (Collapse) | Author | Files | Lines |
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Use scope based of_node_put() to simplify the code logic, and we don't
need to call of_node_put(). Besides, put of_parse_phandle_with_args() in
the while loop to make code more simple.
Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Message-ID: <20241024030442.119506-3-zhangzekun11@huawei.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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of_parse_phandle_with_args() needs to call of_node_put() to decrement
the refcount of args.np. So, Add the missing of_node_put() in the loop.
Fixes: efa5c01cd7ee ("soc: ti: ti_sci_pm_domains: switch to use multiple genpds instead of one")
Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Message-ID: <20241024030442.119506-2-zhangzekun11@huawei.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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With this flag, if a device is marked on the wakeup path, the corresponding
PM domain is kept powered on.
This commit fixes the no_console_suspend support for some TI platforms
(tested on J7200). In case of no_console_suspend the serial core marks the
device on the wakeup path, but without this patch the power domain is
powered off anyway.
Suggested-by: Théo Lebrun <theo.lebrun@bootlin.com>
Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20241022-8250-omap-no-console-suspend-v2-1-cc3d102b8a1e@bootlin.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The domain attributes returned by the perf protocol can end up reporting
identical names across domains, resulting in debugfs node creation failure.
Use the GENPD_FLAG_DEV_NAME_FW to ensure the genpd providers end up with an
unique name.
Logs: [X1E reports 'NCC' for all its scmi perf domains]
debugfs: Directory 'NCC' with parent 'pm_genpd' already present!
debugfs: Directory 'NCC' with parent 'pm_genpd' already present!
Reported-by: Johan Hovold <johan+linaro@kernel.org>
Closes: https://lore.kernel.org/lkml/ZoQjAWse2YxwyRJv@hovoldconsulting.com/
Suggested-by: Ulf Hansson <ulf.hansson@linaro.org>
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
Cc: stable@vger.kernel.org
Message-ID: <20241030125512.2884761-6-quic_sibis@quicinc.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Introduce GENPD_FLAG_DEV_NAME_FW flag which instructs genpd to generate
an unique device name using ida. It is aimed to be used by genpd providers
which derive their names directly from FW making them susceptible to
debugfs node creation failures.
Reported-by: Johan Hovold <johan+linaro@kernel.org>
Closes: https://lore.kernel.org/lkml/ZoQjAWse2YxwyRJv@hovoldconsulting.com/
Fixes: 718072ceb211 ("PM: domains: create debugfs nodes when adding power domains")
Suggested-by: Ulf Hansson <ulf.hansson@linaro.org>
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Sibi Sankar <quic_sibis@quicinc.com>
Cc: stable@vger.kernel.org
Message-ID: <20241030125512.2884761-5-quic_sibis@quicinc.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Add support for SCPSYS power domains of MT6735. All non-CPU power domains
are added except for MD2 (C2K modem), which is left out due to issues
with powering it on.
Signed-off-by: Yassine Oudjana <y.oudjana@protonmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20241017085136.68053-3-y.oudjana@protonmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Define power domains as supported by the RPMh on the SAR2130P platform.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20241017-sar2130p-rpmhpd-v1-2-f4bf7f6fd12e@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Add DT binding for MediaTek MT6735 SCPSYS power controller.
Signed-off-by: Yassine Oudjana <y.oudjana@protonmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogiaocchino.delregno@collabora.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241017085136.68053-2-y.oudjana@protonmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Document compatible for RPMh power domain controller on SAR2130P platform.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241017-sar2130p-rpmhpd-v1-1-f4bf7f6fd12e@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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All users of *_opp_attach|detach_genpd(), have been converted to use
dev|devm_pm_domain_attach|detach_list(), hence let's drop it along with its
corresponding exported functions.
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20241002122232.194245-12-ulf.hansson@linaro.org
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Rather than hooking up the PM domains through _opp_attach_genpd() and
manually manage runtime PM for the corresponding virtual devices created by
genpd during attach, let's avoid the boilerplate-code by converting into
dev_pm_domain_attach|detach_list.
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20241002122232.194245-11-ulf.hansson@linaro.org
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Rather than hooking up the PM domain through devm_pm_opp_attach_genpd() and
manage the device-link, let's avoid the boilerplate-code by converting into
devm_pm_domain_attach_list().
Acked-by: Stanimir Varbanov <stanimir.k.varbanov@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20241002122232.194245-10-ulf.hansson@linaro.org
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Rather than hooking up the PM domains through devm_pm_opp_attach_genpd()
and manage the device-link, let's avoid the boilerplate-code by converting
into devm_pm_domain_attach_list().
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20241002122232.194245-9-ulf.hansson@linaro.org
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Due to that the required-devs for the required OPPs are now always being
assigned, we no longer need the special treatment in _link_required_opps()
for the single PM domain case. Let's therefore drop it.
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20241002122232.194245-8-ulf.hansson@linaro.org
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In the single PM domain case there is no need for platform code to specify
the index of the corresponding required OPP in DT, as the index must be
zero. This allows us to assign a required dev for the required OPP from
genpd, while attaching a device to its PM domain.
In this way, we can remove some of the genpd specific code in the OPP core
for the single PM domain case. Although, this cleanup is made from a
subsequent change.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20241002122232.194245-7-ulf.hansson@linaro.org
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To improve the readability of the code in __genpd_dev_pm_attach(), let's
move out the required OPP handling into a separate function.
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20241002122232.194245-6-ulf.hansson@linaro.org
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In the multiple PM domain case we need platform code to specify the index
of the corresponding required OPP in DT for a device, which is what
*_opp_attach_genpd() is there to help us with.
However, attaching a device to its PM domains is in general better done
with dev_pm_domain_attach_list(). To avoid having two different ways to
manage this and to prepare for the removal of *_opp_attach_genpd(), let's
extend dev_pm_domain_attach|detach_list() to manage the required OPPs too.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20241002122232.194245-5-ulf.hansson@linaro.org
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At this point there are no consumer drivers that makes use of
_set_required_devs(), hence it should be straightforward to rework the code
to enable it to better integrate with the PM domain attach procedure.
During attach, one device at the time is being hooked up to its
corresponding PM domain. Therefore, let's update the _set_required_devs()
to align to this behaviour, allowing callers to fill out one required_dev
per call. Subsequent changes starts making use of this.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20241002122232.194245-4-ulf.hansson@linaro.org
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The dev_pm_domain_attach|detach_list() functions are not resource managed,
hence they should not use devm_* helpers to manage allocation/freeing of
data. Let's fix this by converting to the traditional alloc/free functions.
Fixes: 161e16a5e50a ("PM: domains: Add helper functions to attach/detach multiple PM domains")
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20241002122232.194245-3-ulf.hansson@linaro.org
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This reverts commit f790b5c09665cab0d51dfcc84832d79d2b1e6c0e.
The reverted commit was not ready to be applied due to dependency on other
OPP/pmdomain changes that didn't make it for the last release cycle. Let's
revert it to fix the behaviour.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20241002122232.194245-2-ulf.hansson@linaro.org
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Add support for power domains exposed by RPMh on the qcs615 platform.
Only CX/CX_AO are exposed by RPMh. Consumers such as VDD_MX, EBI, LPI_
MX and LPI_CX will share the power domains.
Signed-off-by: Tingguo Cheng <quic_tingguoc@quicinc.com>
Link: https://lore.kernel.org/r/20240927-add_qcs615_qcs8300_powerdomains_driver_support-v2-4-18c030ad7b68@quicinc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Add support for the power domains exposed by RPMh on the qcs8300
platform. MMCX depends on CX, so mark CX as the parent of MMCX.
Co-developed-by: Shazad Hussain <quic_shazhuss@quicinc.com>
Signed-off-by: Shazad Hussain <quic_shazhuss@quicinc.com>
Signed-off-by: Tingguo Cheng <quic_tingguoc@quicinc.com>
Link: https://lore.kernel.org/r/20240927-add_qcs615_qcs8300_powerdomains_driver_support-v2-2-18c030ad7b68@quicinc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Add compatible string for the RPMh power domains on qcs615 platform.
Signed-off-by: Tingguo Cheng <quic_tingguoc@quicinc.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240927-add_qcs615_qcs8300_powerdomains_driver_support-v2-3-18c030ad7b68@quicinc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Add compatible string for the RPMh power domains on qcs8300 platform.
Signed-off-by: Tingguo Cheng <quic_tingguoc@quicinc.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240927-add_qcs615_qcs8300_powerdomains_driver_support-v2-1-18c030ad7b68@quicinc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The of_property_read_u64() can fail and remain the variable uninitialized,
which will then be returned. Initializing the variable "rate" to zero to
fix this problem.
Fixes: 181c8148556a ("pmdomain: qcom-cpr: Use scope based of_node_put() to simplify code.")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/linux-pm/455a6a49-41d2-4a20-9a31-f57ee7a67920@huawei.com/T/#m0a62b501b453a6d6e94c52a428a66f65b5422c65
Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Link: https://lore.kernel.org/r/20240926134211.45394-1-zhangzekun11@huawei.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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The MediaTek power domain driver contains a hack that assigns the device
node of the power domain to the struct device of the power domain
controller in order to use the devres regulator API.
Now that there is a proper OF-specific regulator API, and even a devres
version, replace the hack with proper code.
This change is incompatible with incomplete device trees. Instead of
assigning the dummy regulator in cases where the power domain requires
a supply but the device tree does not provide one, the driver will just
error out. This will be seen on the MT8390 EVK, which is missing
supplies for the IMG_VCORE and CAM_VCORE domains. And likely all the
MediaTek EVBs, which have no power domain supplies specified. This is
however the correct behavior. If the power domain's supply is missing,
then it should not work. Relying on other parts of the system to keep
the unattached regulator enabled is likely to break in ways less easier
to understand.
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20240930044525.2043884-4-wenst@chromium.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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This is an error path so set the error code. Smatch complains about the
current code:
drivers/opp/core.c:2660 dev_pm_opp_set_config()
error: uninitialized symbol 'ret'.
Fixes: e37440e7e2c2 ("OPP: Call dev_pm_opp_set_opp() for required OPPs")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/3f3660af-4ea0-4a89-b3b7-58de7b16d7a5@stanley.mountain
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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There are existing uses for a devres version of of_regulator_get_optional()
in power domain drivers. On MediaTek platforms, power domains may have
regulator supplies tied to them. The driver currently tries to use
devm_regulator_get() to not have to manage the lifecycle, but ends up
doing it in a very hacky way by replacing the device node of the power
domain controller device to the device node of the power domain that is
currently being registered, getting the supply, and reverting the device
node.
Provide a better API so that the hack can be replaced.
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://patch.msgid.link/20240925093807.1026949-3-wenst@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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The to-be-introduced I2C component prober needs to enable regulator
supplies (and toggle GPIO pins) for the various components it intends
to probe. To support this, a new "pure DT lookup" method for getting
regulator supplies is needed, since the device normally requesting
the supply won't get created until after the component is probed to
be available.
Add a new of_regulator_get_optional() function for this. This mirrors
the existing regulator_get_optional() function, but is OF-specific.
The underlying code that supports the existing regulator_get*()
functions has been reworked in previous patches to support this
specific case.
Also convert an existing usage of "dev && dev->of_node" to
"dev_of_node(dev)".
Link: https://lore.kernel.org/all/20231220203537.83479-2-jernej.skrabec@gmail.com/ [1]
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://patch.msgid.link/20240925093807.1026949-2-wenst@chromium.org
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
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The cpu_emergency_register_virt_callback() function is used
unconditionally by the x86 kvm code, but it is declared (and defined)
conditionally:
#if IS_ENABLED(CONFIG_KVM_INTEL) || IS_ENABLED(CONFIG_KVM_AMD)
void cpu_emergency_register_virt_callback(cpu_emergency_virt_cb *callback);
...
leading to a build error when neither KVM_INTEL nor KVM_AMD support is
enabled:
arch/x86/kvm/x86.c: In function ‘kvm_arch_enable_virtualization’:
arch/x86/kvm/x86.c:12517:9: error: implicit declaration of function ‘cpu_emergency_register_virt_callback’ [-Wimplicit-function-declaration]
12517 | cpu_emergency_register_virt_callback(kvm_x86_ops.emergency_disable_virtualization_cpu);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/x86/kvm/x86.c: In function ‘kvm_arch_disable_virtualization’:
arch/x86/kvm/x86.c:12522:9: error: implicit declaration of function ‘cpu_emergency_unregister_virt_callback’ [-Wimplicit-function-declaration]
12522 | cpu_emergency_unregister_virt_callback(kvm_x86_ops.emergency_disable_virtualization_cpu);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fix the build by defining empty helper functions the same way the old
cpu_emergency_disable_virtualization() function was dealt with for the
same situation.
Maybe we could instead have made the call sites conditional, since the
callers (kvm_arch_{en,dis}able_virtualization()) have an empty weak
fallback. I'll leave that to the kvm people to argue about, this at
least gets the build going for that particular config.
Fixes: 590b09b1d88e ("KVM: x86: Register "emergency disable" callbacks when virt is enabled")
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Kai Huang <kai.huang@intel.com>
Cc: Chao Gao <chao.gao@intel.com>
Cc: Farrah Chen <farrah.chen@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The isomorphism neg_if_exp negates the test of a ?: conditional,
making it unnecessary to have an explicit case for a negated test
with the branches inverted.
At the same time, we can disable neg_if_exp in cases where a
different API function may be more suitable for a negated test.
Finally, in the non-patch cases, E matches an expression with
parentheses around it, so there is no need to mention ()
explicitly in the pattern. The () are still needed in the patch
cases, because we want to drop them, if they are present.
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
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The parentheses are only needed if there is a disjunction, ie a
set of possible changes. If there is only one pattern, we can
remove these parentheses. Just like the format:
- x
+ y
not:
(
- x
+ y
)
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
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As other rules done, we add rules for str_yes_no()
to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
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As other rules done, we add rules for str_on_off()
to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
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As other rules done, we add rules for str_write_read()
to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
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As other rules done, we add rules for str_read_write()
to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
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As other rules done, we add rules for str_enable{d}_
disable{d}() to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
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As other rules done, we add rules for str_lo{w}_hi{gh}()
to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
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As other rules done, we add rules for str_hi{gh}_lo{w}()
to check the relative opportunities.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
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As done with str_true_false(), add checks for str_false_true()
opportunities. A simple test can find over 9 cases currently
exist in the tree.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
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After str_true_false() has been introduced in the tree,
we can add rules for finding places where str_true_false()
can be used. A simple test can find over 10 locations.
Signed-off-by: Hongbo Li <lihongbo22@huawei.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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if an inode backpointer points to a dirent that doesn't point back,
that's an error we should warn about.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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If the reader acquires the read lock and then the writer enters the slow
path, while the reader proceeds to the unlock path, the following scenario
can occur without the change:
writer: pcpu_read_count(lock) return 1 (so __do_six_trylock will return 0)
reader: this_cpu_dec(*lock->readers)
reader: smp_mb()
reader: state = atomic_read(&lock->state) (there is no waiting flag set)
writer: six_set_bitmask()
then the writer will sleep forever.
Signed-off-by: Alan Huang <mmpgouride@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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If we shut down successfully, there shouldn't be any logged ops to
resume.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Add a filesystem flag to indicate whether we did a clean recovery -
using c->sb.clean after we've got rw is incorrect, since c->sb is
updated whenever we write the superblock.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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We had a bug where disk accounting keys didn't always have their version
field set in journal replay; change the BUG_ON() to a WARN(), and
exclude this case since it's now checked for elsewhere (in the bkey
validate function).
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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This was added to avoid double-counting accounting keys in journal
replay. But applied incorrectly (easily done since it applies to the
transaction commit, not a particular update), it leads to skipping
in-mem accounting for real accounting updates, and failure to give them
a version number - which leads to journal replay becoming very confused
the next time around.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Zhang Zekun
Thomas Richard
Sibi Sankar
Yassine Oudjana
Dmitry Baryshkov
Ulf Hansson
Tingguo Cheng
Chen-Yu Tsai
Dan Carpenter
Linus Torvalds
Julia Lawall
Hongbo Li
Kent Overstreet
Alan Huang