linux/include/acpi, branch v4.9

Merge branches 'acpica-fixes', 'acpi-cppc-fixes' and 'acpi-tools-fixes'

2016-11-18T20:34:42Z

* acpica-fixes: Revert "ACPICA: FADT support cleanup" * acpi-cppc-fixes: mailbox: PCC: Fix lockdep warning when request PCC channel * acpi-tools-fixes: tools/power/acpi: Remove direct kernel source include reference

tools/power/acpi: Remove direct kernel source include reference

2016-11-16T21:31:26Z

Avoid breaking cross-compiled ACPI tools builds by rearranging the handling of kernel header files. This patch also contains OUTPUT/srctree cleanups in order to make above fix working for various build environments. Fixes: e323c02dee59 (ACPICA: MSVC9: Fix inclusion order issue) Reported-and-tested-by: Yisheng Xie Reported-by: Andy Shevchenko Signed-off-by: Lv Zheng [ rjw: Changelog ] Signed-off-by: Rafael J. Wysocki

Revert "ACPICA: FADT support cleanup"

2016-11-14T19:56:17Z

Pavel Machek reports that commit 6ea8c546f365 (ACPICA: FADT support cleanup) breaks thermal management on his Thinkpad X60 and T40p, so revert it. Link: https://bugzilla.kernel.org/show_bug.cgi?id=187311 Fixes: 6ea8c546f365 (ACPICA: FADT support cleanup) Reported-by: Pavel Machek Signed-off-by: Rafael J. Wysocki

Merge branches 'acpi-wdat' and 'acpi-cppc'

2016-10-21T20:24:23Z

* acpi-wdat: watchdog: wdat_wdt: Ping the watchdog on resume * acpi-cppc: mailbox: PCC: Fix return value of pcc_mbox_request_channel()

mailbox: PCC: Fix return value of pcc_mbox_request_channel()

2016-10-17T12:26:49Z

When CONFIG_PCC is disabled, pcc_mbox_request_channel() needs to return ERR_PTR(-ENODEV), not a NULL pointer, as the callers of this function use IS_ERR() to check for error code. Signed-off-by: Duc Dang Signed-off-by: Hoan Tran Signed-off-by: Rafael J. Wysocki

Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-10-04T02:43:08Z

Pull CPU hotplug updates from Thomas Gleixner: "Yet another batch of cpu hotplug core updates and conversions: - Provide core infrastructure for multi instance drivers so the drivers do not have to keep custom lists. - Convert custom lists to the new infrastructure. The block-mq custom list conversion comes through the block tree and makes the diffstat tip over to more lines removed than added. - Handle unbalanced hotplug enable/disable calls more gracefully. - Remove the obsolete CPU_STARTING/DYING notifier support. - Convert another batch of notifier users. The relayfs changes which conflicted with the conversion have been shipped to me by Andrew. The remaining lot is targeted for 4.10 so that we finally can remove the rest of the notifiers" * 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (46 commits) cpufreq: Fix up conversion to hotplug state machine blk/mq: Reserve hotplug states for block multiqueue x86/apic/uv: Convert to hotplug state machine s390/mm/pfault: Convert to hotplug state machine mips/loongson/smp: Convert to hotplug state machine mips/octeon/smp: Convert to hotplug state machine fault-injection/cpu: Convert to hotplug state machine padata: Convert to hotplug state machine cpufreq: Convert to hotplug state machine ACPI/processor: Convert to hotplug state machine virtio scsi: Convert to hotplug state machine oprofile/timer: Convert to hotplug state machine block/softirq: Convert to hotplug state machine lib/irq_poll: Convert to hotplug state machine x86/microcode: Convert to hotplug state machine sh/SH-X3 SMP: Convert to hotplug state machine ia64/mca: Convert to hotplug state machine ARM/OMAP/wakeupgen: Convert to hotplug state machine ARM/shmobile: Convert to hotplug state machine arm64/FP/SIMD: Convert to hotplug state machine ...

Merge branches 'acpi-x86', 'acpi-cppc' and 'acpi-soc'

2016-10-01T23:39:09Z

* acpi-x86: x86: ACPI: make variable names clearer in acpi_parse_madt_lapic_entries() x86: ACPI: remove extraneous white space after semicolon * acpi-cppc: ACPI / CPPC: Support PCC with interrupt flag ACPI / CPPC: Add prefix cppc to cpudata structure name ACPI / CPPC: Add support for functional fixed hardware address ACPI / CPPC: Don't return on CPPC probe failure ACPI / CPPC: Allow build with ACPI_CPU_FREQ_PSS config ACPI / CPPC: check for error bit in PCC status field ACPI / CPPC: move all PCC related information into pcc_data ACPI / CPPC: add sysfs support to compute delivered performance ACPI / CPPC: set a non-zero value for transition_latency ACPI / CPPC: support for batching CPPC requests ACPI / CPPC: acquire pcc_lock only while accessing PCC subspace ACPI / CPPC: restructure read/writes for efficient sys mapped reg ops mailbox: pcc: Support HW-Reduced Communication Subspace type 2 * acpi-soc: ACPI / APD: constify local structures ACPI / APD: Add device HID for Vulcan SPI controller

ACPI/processor: Convert to hotplug state machine

2016-09-19T19:44:29Z

Install the callbacks via the state machine. Signed-off-by: Sebastian Andrzej Siewior Acked-by: "Rafael J. Wysocki" Cc: Peter Zijlstra Cc: linux-acpi@vger.kernel.org Cc: rt@linutronix.de Cc: Len Brown Link: http://lkml.kernel.org/r/20160906170457.32393-12-bigeasy@linutronix.de Signed-off-by: Thomas Gleixner

ACPICA: Update version to 20160831

2016-09-10T00:43:03Z

ACPICA commit 3c8c04c2e8a371018b3a29f5cfe27a241caea48d Version 20160831 Link: https://github.com/acpica/acpica/commit/3c8c04c2 Signed-off-by: Bob Moore Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki

ACPICA: Interpreter: Fix MLC issues by switching to new term_list grammar for table loading

2016-09-10T00:43:02Z

ACPICA commit 0e24fb67cde08d7df7671d7d7b183490dc79707e The MLC (Module Level Code) is an ACPICA terminology describing the AML code out of any control method, its support is an indication of the interpreter behavior during the table loading. The original implementation of MLC in ACPICA had several issues: 1. Out of any control method, besides of the object creating opcodes, only the code blocks wrapped by "If/Else/While" opcodes were supported. 2. The supported MLC code blocks were executed after loading the table rather than being executed right in place. ============================================================ The demo of this order issue is as follows: Name (OBJ1, 1) If (CND1 == 1) { Name (OBJ2, 2) } Name (OBJ3, 3) The original MLC support created OBJ2 after OBJ3's creation. ============================================================ Other than these limitations, MLC support in ACPICA looks correct. And supporting this should be easy/natural for ACPICA, but enabling of this was blocked by some ACPICA internal and OSPM specific initialization order issues we've fixed recently. The wrong support started from the following false bug fixing commit: Commit: 7f0c826a437157d2b19662977e9cf3b472cf24a6 Subject: ACPICA: Add support for module-level executable AML code Commit: 9a884ab64a4d092b4c3bf24fd9a30f7fbd4591e7 Subject: ACPICA: Add additional module-level code support ... We can confirm Windows interpreter behavior via reverse engineering means. It can be proven that not only If/Else/While wrapped code blocks, all opcodes can be executed at the module level, including operation region accesses. And it can be proven that the MLC should be executed right in place, not in such a deferred way executed after loading the table. And the above facts indeed reflect the spec words around ACPI definition block tables (DSDT/SSDT/...), the entire table and the Scope object is defined by the AML specification in BNF style as: AMLCode := def_block_header term_list def_scope := scope_op pkg_length name_string term_list The bodies of the scope opening terms (AMLCode/Scope) are all term_list, thus the table loading should be no difference than the control method evaluations as the body of the Method is also defined by the AML specification as term_list: def_method := method_op pkg_length name_string method_flags term_list The only difference is: after evaluating control method, created named objects may be freed due to no reference, while named objects created by the table loading should only be freed after unloading the table. So this patch follows the spec and the de-facto standard behavior, enables the new grammar (term_list) for the table loading. By doing so, beyond the fixes to the above issues, we can see additional differences comparing to the old grammar based table loading: 1. Originally, beyond the scope opening terms (AMLCode/Scope), If/Else/While wrapped code blocks under the scope creating terms (Device/power_resource/Processor/thermal_zone) are also supported as deferred MLC, which violates the spec defined grammar where object_list is enforced. With MLC support improved as non-deferred, the interpreter parses such scope creating terms as term_list rather object_list like the scope opening terms. After probing the Windows behavior and proving that it also parses these terms as term_list, we submitted an ECR (Engineering Change Request) to the ASWG (ACPI Specification Working Group) to clarify this. The ECR is titled as "ASL Grammar Clarification for Executable AML Opcodes" and has been accepted by the ASWG. The new grammar will appear in ACPI specification 6.2. 2. Originally, Buffer/Package/operation_region/create_XXXField/bank_field arguments are evaluated in a deferred way after loading the table. With MLC support improved, they are also parsed right in place during the table loading. This is also Windows compliant and the only difference is the removal of the debugging messages implemented before acpi_ds_execute_arguments(), see Link # [1] for the details. A previous commit should have ensured that acpi_check_address_range() won't regress. Note that enabling this feature may cause regressions due to long term Linux ACPI support on top of the wrong grammar. So this patch also prepares a global option to be used to roll back to the old grammar during the period between a regression is reported and the regression is root-cause-fixed. Lv Zheng. Link: https://bugzilla.kernel.org/show_bug.cgi?id=112911 # [1] Link: https://bugzilla.kernel.org/show_bug.cgi?id=117671 # [1] Link: https://bugzilla.kernel.org/show_bug.cgi?id=153541 # [1] Link: https://github.com/acpica/acpica/issues/122 Link: https://bugs.acpica.org/show_bug.cgi?id=963 Link: https://github.com/acpica/acpica/commit/0e24fb67 Reported-and-tested-by: Chris Bainbridge Reported-by: Ehsan Reported-and-tested-by: Dutch Guy Tested-by: Mika Westerberg Signed-off-by: Lv Zheng Signed-off-by: Bob Moore Signed-off-by: Rafael J. Wysocki