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* ACPICA: Utilities: Reorder initialization codeLv Zheng2016-01-011-16/+15
| | | | | | | | | | | | | | | | | | | ACPICA commit 3894fa9d071343e6ebc7ea480255fa4f27a290be This patch re-orders initialization code in acpi_enable_subsystem() so that all hardware reduced stuffs can be collected together. Note this patch contains code from the following 2 ACPICA upstream commits so that the changes can be made clearer for the reviewers: https://github.com/acpica/acpica/commit/071eff73 https://github.com/acpica/acpica/commit/3894fa9d And additional change to remove the global variable and unused code fragments due to the test result. Lv Zheng. Link: https://github.com/acpica/acpica/commit/3894fa9d Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Events: Uses common_notify for address space handlersLv Zheng2016-01-014-19/+13
| | | | | | | | | | | | | ACPICA commit 5ea0fb75fdf1aa7c0aba067dfa4d5dc3a9279461 The address space handlers can be attached to not only Device but also Processor/thermal_zone objects, so it is better to use their common class 'CommonNotify' instead. Lv Zheng. Link: https://github.com/acpica/acpica/commit/5ea0fb75 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Events: Deploys acpi_ev_find_region_handler()Lv Zheng2016-01-014-91/+75
| | | | | | | | | | | | | | ACPICA commit b916a0a0ae9e81db1a85523c63ec6aa32d5c70c8 There are code fragments that can be substituted by acpi_ev_find_region_handler(). This patch cleans up these code fragments. Lv Zheng. Link: https://github.com/acpica/acpica/commit/b916a0a0 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Cleanup code related to the per-table module level improvementBob Moore2016-01-016-44/+91
| | | | | | | | | | | | | ACPICA commit 071eff738c59eda1792ac24b3b688b61691d7e7c This patch collects cleanups from per-table module level improvement. By splitting this patch from that commit, we can make per-table module level improvement clearer for the revewers. This is a no-op change. Link: https://github.com/acpica/acpica/commit/071eff73 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Update for CondRefOf and RefOf operatorsBob Moore2016-01-011-2/+2
| | | | | | | | | | | | ACPICA commit 725c094f1a7a2ae28e623ee77be400af1c36b180 The SuperName parameters for these operators were incorrect. This represents two problems in the ACPI specification itself. Link: https://github.com/acpica/acpica/commit/725c094f Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Update internal #defines for ObjectType operator. No functional changeBob Moore2016-01-014-5/+5
| | | | | | | | | | | | ACPICA commit 5923a9be36b8cb1b62afa89fe217783c04c92ad3 To improve readability. Rename all *_TYPE_* defines related to ObjectType to *_OBJECT_TYPE_* Link: https://github.com/acpica/acpica/commit/5923a9be Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Update parameter type for ObjectType operatorBob Moore2016-01-013-4/+6
| | | | | | | | | | | | | | | ACPICA commit 67953304a34944548f2fa53a4b0786a5db0ca2ea The grammar for this operator changed in ACPI 5.0A, but it was not necessary to update the interpreter/parser until now. The UserTerm (method invocation) element was removed. Previously a SuperName, the lone argument now requires a new ARGP_ type. Link: https://github.com/acpica/acpica/commit/67953304 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Parser: Fix for SuperName method invocationBob Moore2016-01-011-4/+5
| | | | | | | | | | | | | | | | ACPICA commit 4b86d1046d06e462dae83ebcd5a66cc132a08f8f SuperName parameters that are in fact control method invocations were not handled correctly by the parser. This change fixes the problem by identifying these properly as method invocations. This affects about 14 different ASL operators that contain SuperName parameters. ACPICA BZ 1002. Link: https://github.com/acpica/acpica/commit/4b86d104 Link: https://bugs.acpica.org/show_bug.cgi?id=1002 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Parser: Add constants for internal namepath functionBob Moore2016-01-013-7/+13
| | | | | | | | | | | | ACPICA commit b216e39fe85feee955d29fe0a7190dd811e181ea Add true/false constants for the "PossibleMethodCall" parameter for acpi_ps_get_next_namepath. Link: https://github.com/acpica/acpica/commit/b216e39f Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: iasl/Disassembler: Support ASL ElseIf operatorBob Moore2016-01-011-0/+1
| | | | | | | | | | | | | | | | ACPICA commit 918a840d27d620942e0ecb69de320bb71ea86c5a ElseIf is a macro that resolves to an Else..If in the AML byte code. This support merges an Else followed immediately by an If to an ASL ElseIf operator. Simplifies decoded ASL, especially for large Switch statements. This patch only applies to iasl, and is no-op for Linux kernel. Link: https://github.com/acpica/acpica/commit/918a840d Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Add new exception code, AE_IO_ERRORBob Moore2016-01-011-2/+4
| | | | | | | | | | | | ACPICA commit dcaeaddfc11544f03e6323be4ac8ff8a1e014956 The intent for this exception is for low-level I/O operations, especially Clib functions. Link: https://github.com/acpica/acpica/commit/dcaeaddf Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Tools: Add spacing and missing options in acpibin toolColin Ian King2016-01-011-1/+1
| | | | | | | | | | | | | | | ACPICA commit e7c8ffbbef3f7ce340e012ae4db63ea16cd09714 The -e option is missing from the acpibin help options, so add this. Also, there should be spaces between the filenames for the -c and -d optios, so add this and expand the field size from 18 to 20 characters in the ACPI_OPTION macro. Link: https://github.com/acpica/acpica/commit/e7c8ffbb Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: getopt: Comment update, no functional changeBob Moore2016-01-011-0/+1
| | | | | | | | | | | ACPICA commit 0d784a90bc3aac75227c4459c3553de18b9ebe7a Document one of the option string operators. Link: https://github.com/acpica/acpica/commit/0d784a90 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Namespace: Add String -> ObjectReference conversion supportLv Zheng2016-01-013-1/+89
| | | | | | | | | | | | | | | | | ACPICA commit 80e60d72959bb51c5d08c8500d978607a42ed81d BIOS developers may accidently put the quotes around the name strings, which converts the object references in the packages indicated by the name strings into the data objects (strings). Such kind of error has been seen in _DEP control methods on some platforms. This patch implements a workaround to correct it. Reported by Bastien Nocera. Fixed by Lv Zheng. Link: https://github.com/acpica/acpica/commit/80e60d72 Reference: https://bugzilla.kernel.org/show_bug.cgi?id=106231 Reported-and-tested-by: Bastien Nocera <bugzilla@hadess.net> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Namespace: Add scope information to the simple object repair mechanismLv Zheng2016-01-014-9/+16
| | | | | | | | | | | | | ACPICA commit 51cbd324420ca5e381cb2c57ce95139053518a35 The acpi_object_converter callbacks are lack in scope information to convert name_string. This patch fixes this issue by passing the evaluation method/object node to the converter callbacks. Lv Zheng. Link: https://github.com/acpica/acpica/commit/51cbd324 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Update for output of the Debug ObjectBob Moore2016-01-011-3/+8
| | | | | | | | | | | | ACPICA commit b01414f5a822d0879aa9eba91541a21e7e501142 Improve output for the case of an Index() that refers to a Package element that has not been initialized. Link: https://github.com/acpica/acpica/commit/b01414f5 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Debug object: Fix output for a NULL objectBob Moore2016-01-011-1/+2
| | | | | | | | | | | | ACPICA commit e4414f067c726ef746dac990c0bae7f433045843 Was broken by addition of "null string" feature to emit simple blank lines. Link: https://github.com/acpica/acpica/commit/e4414f06 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Debug Object: Cleanup outputBob Moore2016-01-012-20/+51
| | | | | | | | | | | | | | ACPICA commit 05492c4a7d1e106eb871a5e1357ed564d25740e5 1) Make the timer value output optional 2) Allow empty lines via null string or simple newline 3) No need for the object type name for strings and integers 4) Miscellaneous cleanup of output Link: https://github.com/acpica/acpica/commit/05492c4a Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Concatenate operator: Add extensions to support all ACPI objectsBob Moore2016-01-012-6/+37
| | | | | | | | | | | | ACPICA commit 3420c1f5e6c6dd4fe51be4d98da69b3197d608df Emits strings for all the object types besides int/str/buf. This simplifies and extends the usefulness of the Printf macros. Link: https://github.com/acpica/acpica/commit/3420c1f5 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: acpiexec/acpinames: Update for error checking macrosBob Moore2016-01-011-0/+13
| | | | | | | | | | | ACPICA commit 5bdfb4f43f4d315d23b31b39bac5a0b1ca420c2b Standardize naming, deploy in common header. Link: https://github.com/acpica/acpica/commit/5bdfb4f4 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Add comment explaining _SUB removalBob Moore2016-01-011-0/+7
| | | | | | | | | | | | | ACPICA commit 81a89968f83bfc3b1d0f0f80f2da08ea69646053 Adds a lengthy comment to acpi_get_object_info explaining the removal of _SUB and why no complex methods can be added ever to this interface. Link: https://github.com/acpica/acpica/commit/81a89968 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Revert "acpi_get_object_info: Add support for ACPI 5.0 _SUB method."Bob Moore2016-01-015-130/+24
| | | | | | | | | | | | | | | | | | | ACPICA commit e4743959b59ad93eab7310adf756adc930be0ddb This reverts commit 8e7a8753827660c3dd1f571f3185610402b756f0. The _SUB method was found to be problematic for this interface because some implementations use control methods. Therefore, it is being removed. Operations cannot be used because this interface is called during the device discovery scan and the region handlers are not fully installed at that time. Link: https://github.com/acpica/acpica/commit/e4743959 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Debugger: Remove some unecessary NULL checksMarkus Elfring2016-01-012-10/+3
| | | | | | | | | | | | | | | ACPICA commit 36fcc1b98def3fb6e20cf5e877ffc3c1592d0140 Local strupr function already checks for NULL pointers. Original linux patch submitted by: Markus Elfring <elfring@users.sourceforge.net> Link: https://github.com/acpica/acpica/commit/36fcc1b9 Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: iasl/acpiexec: Update input file handling and verificationBob Moore2016-01-014-16/+13
| | | | | | | | | | | | | | | ACPICA commit 3a6f2a516dd35a4daacbc5b5144d1db763ff2cb0 Improve and cleanup verification of ACPI tables within input files. Share more code between the disassembler and acpiexec. This patch only affects application debugger commands, thus it is a no-op chage for Linux kernel. Link: https://github.com/acpica/acpica/commit/3a6f2a51 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Disassembler/tools: Support for multiple ACPI tables in one fileBob Moore2016-01-019-514/+53
| | | | | | | | | | | ACPICA commit 5be7dc4d0d69b2953d156f5bc4d3e8a65a390837 Matches the support in iASL and acpi_exec. Link: https://github.com/acpica/acpica/commit/5be7dc4d Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: acpiexec: Add support for AML files containing multiple tablesBob Moore2016-01-012-0/+27
| | | | | | | | | | | | ACPICA commit 301f16e4037275888f65b88aec7231c1cd64339f Add support for multi-AML-table files that originate from either acpixtract or iASL. Link: https://github.com/acpica/acpica/commit/301f16e4 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Split interpreter tracing functions to a new fileBob Moore2016-01-013-326/+379
| | | | | | | | | | | ACPICA commit a3f85a7d26a52ee0d9103feb4fbec8d7b6ba4c11 Split out functions from exdebug.c to extrace.c Link: https://github.com/acpica/acpica/commit/a3f85a7d Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Core: Major update for code formatting, no functional changesBob Moore2016-01-01100-493/+634
| | | | | | | | | | | | ACPICA commit dfa394471f6c01b2ee9433dbc143ec70cb9bca72 Mostly indentation inconsistencies across the code. Split some long lines, etc. Link: https://github.com/acpica/acpica/commit/dfa39447 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: exmutex: General cleanup, restructured some codeBob Moore2016-01-011-21/+59
| | | | | | | | | | | ACPICA commit c2a7d000b6be34313b1c50c8a718df16113f0f32 Should be no functional change. Link: https://github.com/acpica/acpica/commit/c2a7d000 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Add "const" to some functions that return fixed stringsLABBE Corentin2016-01-014-25/+22
| | | | | | | | | | | | | | | ACPICA commit 28645f8a113f346c8db103a4f7565fcba88c746f Most of the "get_name" - style functions can return "const char *" with no ill side-effects. Original linux patch from LABBE Corentin <clabbe.montjoie@gmail.com> and backported to ACPICA. Link: https://github.com/acpica/acpica/commit/28645f8a Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Fix SyncLevel support interaction with method auto-serializationDavid E. Box2016-01-011-2/+13
| | | | | | | | | | | | | | | ACPICA commit 253e3c03efc1a495d2aa61eee09ab1d0842a3dce The control method auto-serialization can interfere with existing ASL code that makes use of Mutex/Method SyncLevel support. This change makes the auto-serialization transparent to the SyncLevel support and management. David Box. Link: https://github.com/acpica/acpica/commit/253e3c03 Signed-off-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Debugger: reduce old external path formatLv Zheng2016-01-019-10/+12
| | | | | | | | | | | | | | | | | ACPICA commit 75c0da9e796bdf9bdd46d75f028a3e1779903214 In the error logs and debugger outputs, use new external path format that does not contain a trailing underscore. This patch takes care of acpi_ns_get_external_pathname() invocations, chaning them into acpi_ns_get_normalized_pathname(TRUE) where possible. Along with some error log fixes, the following debugger commands are fixed: resources, handlers, paths. Lv Zheng. Link: https://github.com/acpica/acpica/commit/75c0da9e Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Namespace: Fix wrong error logLv Zheng2016-01-011-1/+1
| | | | | | | | | | | | | ACPICA commit 20228e39e125d92f9d80c6e07d3767b225d0536e The Info->Node in acpi_ns_init_one_device() may not be initialized. Even it is initialized, the redundant "._INI" can be seen for this log entry. This patch fixes this issue by using device_node instead. Lv Zheng. Link: https://github.com/acpica/acpica/commit/20228e39 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: acpi_get_sleep_type_data: Reduce warningsPrarit Bhargava2016-01-011-7/+17
| | | | | | | | | | | | | | | | | ACPICA commit 7bb77313091e52a846df4c9c2bea90be31bfb9d8 Eliminate warnings for "not found" _Sx errors, since these are optional. Original NOT_FOUND status is still returned. Original changes by Prarit Bhargava. ACPICA BZ 1208. Link: https://github.com/acpica/acpica/commit/7bb77313 Link: https://bugs.acpica.org/show_bug.cgi?id=1208 Signed-off-by: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* ACPICA: Linuxize: reduce divergences for 20151218 releaseLv Zheng2016-01-0113-324/+325
| | | | | | | | | | | | | The patch reduces source code differences between the Linux kernel and the ACPICA upstream so that the linuxized ACPICA 20151218 release can be applied with reduced human intervention. The pscode.c has already been out of sync for months, and it becomes more and more difficult to merge pscode.c changes, so instead of update the affected lines of pscode.c, this patch synchronizes entire pscode.c file. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* Merge branch 'acpi-debug' into acpicaRafael J. Wysocki2016-01-0123-211/+1793
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| * ACPI / debugger: Fix a redundant mutex unlock issue in acpi_aml_open()Lv Zheng2015-12-281-1/+2
| | | | | | | | | | | | | | | | | | Fix a double mutex_unlock() issue where acpi_initialize_debugger() is called with the mutex already unlocked. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPI / debugger: copy_to_user doesn't return errorsDan Carpenter2015-12-281-4/+6
| | | | | | | | | | | | | | | | | | | | The copy_to/from_user() functions don't return error codes, they return the number of bytes remaining. We had intended to return -EFUALT here. We actually have already checked access_ok() in an earlier function so I don't think these functions will fail but let's fix it anyway. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPI / debugger: remove some unneeded conditionsDan Carpenter2015-12-281-4/+0
| | | | | | | | | | | | | | | | | | | | "count" is unsigned so checking for less than zero here causes a static checker warning. And really it's better to let the access_ok() check fail if the user passes in a NULL "buf" pointer because -EFAULT is the correct error code. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPI / debugger: Fix an issue a flag is modified without lockingLv Zheng2015-12-281-1/+1
| | | | | | | | | | | | | | | | There is one line of code, executed out of locking due to rebase mistakes. This patch fixes this issue. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPI / debugger: Add module support for ACPI debuggerLv Zheng2015-12-157-91/+340
| | | | | | | | | | | | | | | | | | | | | | This patch converts AML debugger into a loadable module. Note that, it implements driver unloading at the level dependent on the module reference count. Which means if ACPI debugger is being used by a userspace program, "rmmod acpi_dbg" should result in failure. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * tools/power/acpi: Add userspace AML interface supportLv Zheng2015-12-153-8/+473
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a userspace tool to access Linux kernel AML debugger interface. Tow modes are supported by this tool: 1. Interactive: Users are able to launch a debugging shell to talk with in-kernel AML debugger. Note that it's user duty to ensure kernel runtime integrity by using this debugging tool: A. Some control methods evaluated by the users may result in kernel panics if those control methods shouldn't be evaluated by the OSPMs according to the current BIOS/OS configurations. B. Currently if a single stepping evaluation couldn't run to an end, then the synchronization primitives acquired by the evaluation may block normal OSPM control method evaluations. 2. Batch: Users are able to execute debugger commands in a script. Note that in addition to the above duties, it's user duty to ensure script runtime integrity by using this debugging tool in this mode: C. Currently only those commands that are not used for single stepping are suitable to be used in this mode. D. If the execution of the command may cause a failure that could result in an endless kernel execution, the execution of the script may also get blocked. To exit the utility, currently "exit/quit" commands are recommended, but ctrl-C" can also be used. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPI / debugger: Add IO interface to access debugger functionalitiesLv Zheng2015-12-158-17/+887
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds /sys/kernel/debug/acpi/acpidbg, which can be used by userspace programs to access ACPICA debugger functionalities. Known issue: 1. IO flush support acpi_os_notify_command_complete() and acpi_os_wait_command_ready() can be used by acpi_dbg module to implement .flush() filesystem operation. While this patch doesn't go that far. It then becomes userspace tool's duty now to flush old commands before executing new batch mode commands. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Debugger: Fix runtime stub issues of ACPI_DEBUGGER_EXEC using ↵Lv Zheng2015-12-158-46/+106
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | different stub mechanism ACPICA commit 11522d6b894054fc4d62dd4f9863ec151296b386 The ACPI_DEBUGGER_EXEC is a problem now when the debugger code is compiled but runtime disabled. They actually will get executed in this situation. Although such executions are harmless if we can correctly make acpi_db_single_step() a runtime stub, users may still do not want to see the debugger print messages logged into OSPMs' kernel logs when a debugger driver is not loaded to enable the debugger during runtime. This patch fixes this issue by introducing new stub mechanism instead of ACPI_DEBUGGER_EXEC. Lv Zheng. Link: https://github.com/acpica/acpica/commit/11522d6b Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Debugger: Convert some mechanisms to OSPM specificLv Zheng2015-12-159-147/+89
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following mechanisms are OSPM specific: 1. Redirect output destination to console: no file redirection will be needed by an in-kernel debugger, there is even no file can be accessed when the debugger is running in the kernel mode. 2. Output command prompts: programs other than acpiexec can have different prompt characters and the prompt characters may be implemented as a special character sequence to form a char device IO protocol. 3. Command ready/complete handshake: OSPM debugger may wait more conditions to implement OSPM specific semantics (for example, FIFO full/empty conditions for O_NONBLOCK or IO open/close conditions). Leaving such OSPM specific stuffs in the ACPICA debugger core blocks Linux debugger IO driver implementation. Several new OSL APIs are provided by this patch: 1. acpi_os_initialize_command_signals: initialize command handshake mechanism or any other OSPM specific stuffs. 2. acpi_os_terminate_command_signals: reversal of acpi_os_initialize_command_signals. 3. acpi_os_wait_command_ready: putting debugger task into wait state when a command is not ready. OSPMs can terminate command loop by returning AE_CTRL_TERMINATE from this API. Normally, wait_event() or wait_for_multiple_object() may be used to implement this API. 4. acpi_os_notify_command_complete: putting user task into running state when a command has been completed. OSPMs can terminate command loop by returning AE_CTRL_TERMINATE from this API. Normally, wake_up() or set_event() may be used to implement this API. This patch also converts current command signaling implementation into a generic debugger layer (osgendbg.c) to be used by the existing OSPMs or acpiexec, in return, Linux can have chance to implement its own command handshake mechanism. This patch also implements acpiexec batch mode in a multi-threading mode comaptible style as a demo (this can be confirmed by configuring acpiexec into DEBUGGER_MULTI_THREADED mode where the batch mode is still working). Lv Zheng. Note that the OSPM specific command handshake mechanism is required by Linux kernel because: 1. Linux kernel trends to use wait queue to synchronize two threads, using mutexes to achieve that will cause false "dead lock" warnings. 2. The command handshake mechanism implemented by ACPICA is implemented in this way because of a design issue in debugger IO streaming. Debugger IO outputs are simply cached using a giant buffer, this should be tuned by Linux in the future. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Debugger: Remove unnecessary status checkColin Ian King2015-12-151-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | ACPICA commit f9d5c6c9a25e9f5ac05458bfcd8b381e21bb2ba5 ACPICA BZ 1205. Colin Ian King. Link: https://bugs.acpica.org/show_bug.cgi?id=1205 Link: https://github.com/acpica/acpica/commit/f9d5c6c9 Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | Linux 4.4-rc7v4.4-rc7Linus Torvalds2015-12-271-1/+1
| |
* | Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds2015-12-278-24/+42
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull MIPS fixes from Ralf Baechle: - Fix bitrot in __get_user_unaligned() - EVA userspace accessor bug fixes. - Fix for build issues with certain toolchains. - Fix build error for VDSO with particular toolchain versions. - Fix build error due to a variable that should have been removed by an earlier patch * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MIPS: Fix bitrot in __get_user_unaligned() MIPS: Fix build error due to unused variables. MIPS: VDSO: Fix build error MIPS: CPS: drop .set mips64r2 directives MIPS: uaccess: Take EVA into account in [__]clear_user MIPS: uaccess: Take EVA into account in __copy_from_user() MIPS: uaccess: Fix strlen_user with EVA
| * | MIPS: Fix bitrot in __get_user_unaligned()Al Viro2015-12-271-3/+3
| | | | | | | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | MIPS: Fix build error due to unused variables.Ralf Baechle2015-12-223-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | c861519fcf95b2d46cb4275903423b43ae150a40 ("MIPS: Fix delay loops which may be removed by GCC.") which made it upstream was an outdated version of the patch and is lacking some the removal of two variables that became unused thus resulting in further warnings and build breakage. The commit from ae878615d7cee5d7346946cf1ae1b60e427013c2 was correct however. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-04 05:47:32 +0000