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* Merge back earlier ACPICA material.Rafael J. Wysocki2014-04-28
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| * ACPICA: Update version to 20140325.Bob Moore2014-04-20
| | | | | | | | | | | | | | | | Version 20140325. 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: acpidump: Update man page.Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | This patch updates man file of acpidump. Signed-off-by: Lv Zheng <lv.zheng@intel.com> [rjw: Subject] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: acpidump: Remove old acpidump source.Lv Zheng2014-04-20
| | | | | | | | | | | | | | This patch removes old acpidump source. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: acpidump: Update Makefile to build acpidump from ACPICA.Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch updates tools Makefile to use new acpidump. ACPICA's acpidump relies on various ACPICA components/common/os_specific source code. They are located in various kernel folders, being searched and compiled using vpath technique in Makefile. These files include: 1. drivers/acpi/acpica/acapps.h 2. tools/power/acpi/common/getopt.c 3. tools/power/acpi/common/cmfsize.c 4. tools/power/acpi/os_specific/service_layers/oslinuxtbl.c 5. tools/power/acpi/os_specific/service_layers/osunixdir.c 6. tools/power/acpi/os_specific/service_layers/osunixmap.c This patch has been tested on DELL Inspiron Mini, acpidump output can be successfully generated by typing the following commands: # cd tools/power/acpi # make DEBUG=false # sudo make install DESTDIR=/opt # sudo make uninstall DESTDIR=/opt # make clean Or # cd tools # make acpi # sudo make acpi_install # sudo make acpi_uninstall # make acpi_clean A kernel build test is also performed on DELL Inspiron Mini to verify that the changes done to actypes.h and aclinux.h won't affect the kernel build process. Signed-off-by: Lv Zheng <lv.zheng@intel.com> [rjw: Subject] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: acpidump: Update new structures and add missing file.Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | This patch is the generation of a commit that updates release automation with newly added structures and files that are referenced by the acpidump. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: acpidump: Add support to generate acpidump release.Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The acpidump is initiated by Bob Moore and Chao Guan, fixed and completed by Lv Zheng. This patch is a generation of the commit that adds acpidump release automation into ACPICA release process. Lv Zheng. Note that this patch doesn't replace the kernel shipped acpidump with the new acpidump. The replacement is done by further patches. Original-by: Chao Guan <guanchao@mail.ustc.edu.cn> 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: Table Manager: Split tbinstal.c into two files.Bob Moore2014-04-20
| | | | | | | | | | | | | | | | | | New file is tbdata.c -- management functions for ACPICA table manager data structures. 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: Table Manager: Misc cleanup and renames, no functional change.Bob Moore2014-04-20
| | | | | | | | | | | | | | | | Some various cleanups and renames. 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: Tables: Add acpi_install_table() API for early table installation.Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | This patch adds a new API - acpi_install_table(). OSPMs can use this API to install tables during early boot stage. Lv Zheng. References: https://lkml.org/lkml/2014/2/28/372 Cc: Thomas Renninger <trenn@suse.de> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> [rjw: Subject] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Tables: Avoid SSDT installation with acpi_gbl_disable_ssdt_table_load.Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | | | It is reported that when acpi_gbl_disable_ssdt_table_load is specified, user still can see it installed into /sys/firmware/acpi/tables on Linux boxes. This is because the option only stops table "loading", but doesn't stop table "installing", thus it is still in the acpi_gbl_root_table_list. With previous cleanups, it is possible to prevent SSDT installations to make it not such confusing. The global variable is also renamed. Lv Zheng. Signed-off-by: Lv Zheng <lv.zheng@intel.com> [rjw: Subject] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Tables: Cleanup ACPI_TABLE_ORIGIN_xxx flags.Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch refines ACPI_TABLE_ORIGIN_xxx flags. No functional changes. The previous commits have introduced the following internal APIs: 1. acpi_tb_acquire_table: Acquire struct acpi_table_header according to ACPI_TABLE_ORIGIN_xxx flags. 2. acpi_tb_release_table: Release struct acpi_table_header according to ACPI_TABLE_ORIGIN_xxx flags. 3. acpi_tb_install_table: Make struct acpi_table_desc.Address not NULL according to ACPI_TABLE_ORIGIN_xxx flags. 4. acpi_tb_uninstall_table: Make struct acpi_table_desc.Address NULL according to ACPI_TABLE_ORIGIN_xxx flags. 5. acpi_tb_validate_table: Make struct acpi_table_desc.Pointer not NULL according to ACPI_TABLE_ORIGIN_xxx flags. 6. acpi_tb_invalidate_table: Make struct acpi_table_desc.Pointer NULL according to ACPI_TABLE_ORIGIN_xxx flags. It thus detects that the ACPI_TABLE_ORIGIN_UNKNOWN is redundant to ACPI_TABLE_ORIGIN_OVERRIDE. The ACPI_TABLE_ORIGIN_xxTERN_VIRTUAL flags are named as VIRTUAL in order not to confuse with x86 logical address, this patch also renames all "logical override" into "virtual override". 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: Tables: Fix table checksums verification before installation.Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The original table handling code does not always verify checksums before installing a table, this is because code to achieve this must be implemented here and there in the redundant code blocks. There are two stages during table initialization: 1. "INSTALLED" after acpi_tb_install_table() and acpi_tb_override_table(), struct acpi_table_desc.Pointer is ensured to be NULL. This can be safely used during OSPM's early boot stage. 2. "VALIDATED" after acpi_tb_validate_table(), struct acpi_table_desc.Pointer is ensured to be not NULL. This must not be used during OSPM's early boot stage. This patch changes acpi_tb_add_table() into an early boot safe API to reduce code redundancies by changing the table state that is returned by this function from "VALIDATED" to "INSTALLED". Then the table verification code can be done in a single place. Originally, the acpi_tb_add_table() can only be used by dynamic table loadings that are executed after early boot stage, it cannot be used by static table loadings that are executed in early boot stage as: 1. The address of the table is a virtual address either maintained by OSPMs who call acpi_load_table() or by ACPICA whenever "Load" or "LoadTable" opcodes are executed, while during early boot stage, physical address of the table should be used for table loading. 2. The API will ensure the state of the loaded table to be "VALIDATED" while during early boot stage, tables maintained by root table list should be kept as "INSTALLED". To achieve this: 1. Rename acpi_tb_install_table() to acpi_tb_install_fixed_table() as it only applies to DSDT/FACS installation. Rename acpi_tb_add_table() to acpi_tb_install_non_fixed_table() as it will be applied to the installation of the rest kinds of tables. 2. Introduce acpi_tb_install_table(), acpi_tb_install_and_override_table to collect redudant code where their invocations actually have slight differences. 1. acpi_tb_install_table() is used to fill an struct acpi_table_desc where the table length is known to the caller. 2. acpi_tb_install_and_override_table() is used to perform necessary overriding before installation. 3. Change a parameter of acpi_tb_install_non_fixed_table() from struct acpi_table_desc to acpi_physical_address to allow it to be invoked by static table loadings. Also cleanup acpi_ex_load_op() and acpi_load_table() to accomodate to the parameter change. 4. Invoke acpi_tb_install_non_fixed_table() for all table loadings other than DSDT/FACS in acpi_tb_parse_root_table() to improve code maintainability (logics are collected in the single function). Also delete useless code from acpi_tb_parse_root_table(). 5. Remove all acpi_tb_validate_table() from acpi_tb_install_non_fixed_table() and acpi_tb_install_fixed_table() so that the table descriptor is kept in the state of "INSTALLED" but not "VALIDATED" after returning from these functions. 6. Introduce temporary struct acpi_table_desc (new_table_desc/old_table_desc) into the functions to indicate a table descriptor that is not maintained by acpi_gbl_root_table_list. Introduce acpi_tb_acquire_temporal_table() and acpi_tb_release_temporal_table() to handle the use cases of such temporal tables. They are only used for verified installation. 7. Introduce acpi_tb_verify_table() to validate table and verify table checksum, also remove table checksum verification from acpi_tb_validate_table(). Invoke acpi_tb_validate_table() in the functions that will convert a table into "LOADED" state or invoke it from acpi_get_table_XXX() APIs. Invoke acpi_tb_verify_table() on temporary struct acpi_table_desc(s) that are going to be "INSTALLED". 8. Change acpi_tb_override_table() logic so that a temporary struct acpi_table_desc will be overridden before installtion, this makes code simpler. After applying the patch, tables are always installed after being overridden and the table checksums are always verified before installation. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> [rjw: Subject] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Tables: Fix unbalanced table validations.Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As acpi_tb_validate_table() returns failure on checksum verification without doing invalidatation, all its invocations that are not done to a descriptor stored in acpi_gbl_root_table_list are checked and balanced. But this is not a real issue as the descritors that have been passed to acpi_tb_add_table() are all virtual address tables and the validations are in fact no-op. The cleanup can ensure that any future extensions made on acpi_tb_add_table() to allow it to be invoked with physical address tables will not trigger memory leakage regressions. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> [rjw: Subject] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Tables: Clean up split INSTALLED/VALIDATED table state logics.Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is mainly a naming cleanup to clarify hidden logics, no functional changes. acpi_initialize_tables() is used by Linux to install table addresses for early boot steps. During this stage, table addresses are mapped by early_ioremap() mechanism which is different from the runtime IO mappings. Thus it is not safe for ACPICA to keep mapped pointers in struct acpi_table_desc structure during this stage. In order to support this in ACPICA, table states are divided into 1. "INSTALLED" (where struct acpi_table_desc.Pointer is always NULL) and 2. "VALIDATED" (where struct acpi_table_desc.Pointer is always not NULL). During acpi_initialize_tables(), table state are ensured to be "INSTALLED" but not "VALIDATED". This logic is ensured by the original code in very ambigious way. For example, currently acpi_tb_delete_table() is invoked in some place to perform an uninstallation while it is invoked in other place to perform an invalidation. They happen to work just because no one enters the penalty where the 2 behaviours are not equivalent. The naming cleanups are made in this patch: A. For installation and validation: There is code setting struct acpi_table_desc.Pointer first and delete it immediately to keep the descriptor's state as "INSTALLED" during the installation. This patch implements this in more direct way. After applying it, struct acpi_table_desc.Pointer will never be set in acpi_tb_install_table() and acpi_tb_override_table() as they are the only functions invoked during acpi_initialize_tables(). This is achieved by: 1. Rename acpi_tb_verify_table() to acpi_tb_validate_table() to clarify this change. 2. Rename acpi_tb_table_override() to acpi_tb_override_table() to keep nameing consistencies as other APIs (verb. Table). 3. Stops setting struct acpi_table_desc.Pointer in acpi_tb_install_table() and acpi_tb_table_override(). 4. Introduce acpi_tb_acquire_table() to acquire the table pointer that is not maintained in the struct acpi_table_desc of the global root table list and rewrite acpi_tb_validate_table() using this new function to reduce redundancies. 5. Replace the table pointer using the overridden table pointer in acpi_tb_add_table(). As acpi_tb_add_table() is not invoked during early boot stage, tables returned from this functions should be "VALIDATED". As acpi_tb_override_table() is modified by this patch to return a "INSTALLED" but not "VALIDATED" descriptor, to keep acpi_tb_add_table() unchanged, struct acpi_table_desc.Pointer is filled in acpi_tb_add_table(). B. For invalidation and uninstallation: The original code invalidate table by invoking acpi_tb_delete_table() here and there, but actually this function should only be used to uninstall tables. This can work just because its invocations are equivalent to invalidation in some cases. This patch splits acpi_tb_delete_table() into acpi_tb_invalidate_table() and acpi_tb_uninstall_table() and cleans up the hidden logic using the new APIs. This is achieved by: 1. Rename acpi_tb_delete_table() to acpi_tb_uninstall_table() as it is mainly called before resetting struct acpi_table_desc.Address. Thus the table descriptor is in "not INSTALLED" state. This patch enforces this by setting struct acpi_table_desc.Address to NULL in this function. 2. Introduce acpi_tb_invalidate_table() to be the reversal of acpi_tb_validate_table() and invoke it in acpi_tb_uninstall_table(). 3. Introduce acpi_tb_release_table() to release the table pointer that is not maintained in acpi_gbl_root_table_list and rewrite acpi_tb_invalidate_table() using this new function to reduce redundancies. After cleaning up, the maintainability of the internal APIs are also improved: 1. acpi_tb_acquire_table: Acquire struct acpi_table_header according to ACPI_TABLE_ORIGIN_xxx flags. 2. acpi_tb_release_table: Release struct acpi_table_header according to ACPI_TABLE_ORIGIN_xxx flags. 3. acpi_tb_install_table: Make struct acpi_table_desc.Address not NULL according to ACPI_TABLE_ORIGIN_xxx flags. 4. acpi_tb_uninstall_table: Make struct acpi_table_desc.Address NULL according to ACPI_TABLE_ORIGIN_xxx flags. 5. acpi_tb_validate_table: Make struct acpi_table_desc.Pointer not NULL according to ACPI_TABLE_ORIGIN_xxx flags. 6. acpi_tb_invalidate_table: Make struct acpi_table_desc.Pointer NULL according to ACPI_TABLE_ORIGIN_xxx flags. 7. acpi_tb_override_table: Replace struct acpi_table_desc.Address and struct acpi_table_desc.Flags. It only happens in "INSTALLED" state. The patch has been unit tested in acpi_exec by: 1. Initializing; 2. Executing exc_tbl ASLTS tests; 3. Executing "Load" command. So that all original acpi_tb_install_table() and acpi_tb_override_table() invocations are covered. Known Issues: 1. Cleanup acpi_tb_add_table() to Kill Code Redundancies Current implementation in acpi_tb_add_table() is not very clean, further patch can rewrite acpi_tb_add_table() with ordered acpi_tb_install_table(), acpi_tb_override_table() and acpi_tb_validate_table(). It is not done in this patch so that it is easy for the reviewers to understand the changes in this patch. 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: Tables: Fix multiple ACPI_FREE()s around acpi_tb_add_table().Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently there are following issues in acpi_tb_add_table(): Following logic is currently correct: 1. When a table is allocated in acpi_ex_load_op(), if a reloading happens, the allocated memory is freed by acpi_tb_add_table() and AE_OK is returned to the caller to avoid the caller to free it again. Following logic is currently incorrect: 1. When a table is allocated in acpi_ex_load_op() or by the acpi_load_table() caller, if the table is already loaded, there will be twice ACPI_FREE() called for the same pointer when acpi_tb_add_table() returns AE_ALREADY_EXISTS. This patch only fixes the above incorrect logic in acpi_tb_add_table(): 1. Only invoke acpi_tb_delete_table() if AE_OK is going to be returned. 2. After doing so, we do not invoke ACPI_FREE() when returning AE_OK; Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> [rjw: Subject] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Tables: Fix the issues in handling virtual addressed tables.Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When table is overridden or reloaded, acpi_tb_delete_table() is called where struct acpi_table_desc.Pointer will be NULL. It thus is impossible for virtual addressed tables to obtain the .Pointer again in acpi_tb_verify_table(). This patch stores virtual table addresses (ACPI_TABLE_ORIGIN_ALLOCATED, ACPI_TABLE_ORIGIN_UNKNOWN, ACPI_TABLE_ORIGIN_OVERRIDE) in the struct acpi_table_desc.Address field and refills the struct acpi_table_desc.Pointer using these addresses in acpi_tb_verify_table(). Note that if a table with ACPI_TABLE_ORIGIN_ALLOCATED set is actually freed, the .Address field should be invalidated and thus must be replaced with NULL to avoid wrong future validations occuring in acpi_tb_verify_table(). 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: Remove indent divergences to reduce maintenance overhead.Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | | | | | | | The divergences in the ACPICA files makes it difficult to maintain linuxize ACPICA table commits. This patch reduces such divergences before applying table manager commits so that human interventions of patch rebasing can be reduced. Signed-off-by: Lv Zheng <lv.zheng@intel.com> [rjw: Subject] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Add a missing field for debug dump of mutex objects.Bob Moore2014-04-20
| | | | | | | | | | | | | | | | Adds "OriginalSyncLevel" field to the output. 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: Linux-specific header: Add support for PPC64 compilation.Colin Ian King2014-04-20
| | | | | | | | | | | | | | | | | | Adds PPC64 as a 64-bit architecture. Colin Ian King. 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: Clean up comment divergences in aclinux.hLv Zheng2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the following commmit is back ported to ACPICA, comments have been updated: Subject: ACPICA: Linux-specific header: Update support for Linux/acpi applications. This patch back ports the differences between the ACPICA upstream and Linux. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> [rjw: Subject] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Update use of acpi_os_wait_events_complete interface.Lv Zheng2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch cleans up all of the acpi_os_wait_events_complete() invocations to make it to be invoked inside of ACPICA in the way to accommodate Linux's work queue implementation. According to the report, current Linux kernel code is facing a boot time race issue in the acpi_remove_notify_handler(). This is because: Linux is using work queues to implement a deferred handler call environment while ACPICA expects OSPM to implement acpi_os_wait_events_complete() using wait queues. The position to invoke a "waiter" is not suitable for a "flusher" as new invocations can be scheduled after this position and before the deletion of the handler from its management container. Since the following commit has deleted acpi_os_wait_events_complete() parameters, it thus might not be possible for OSPM to achieve a safe removal using wait queues. This requires ACPICA to be changed accordingly to "flush" handlers rather than "wait" them to be drain up: Commit: 5ff986a2a9db11858247b71fe242fe17617229aa Date: Wed, 16 May 2012 13:36:07 -0700 Subject: Introduce acpi_os_wait_events_complete interface. This interface will block until asynchronous events like notifies and GPEs are complete. Within ACPICA, it is called before a notify or GPE handler is removed. ACPICA BZ 868. This patch fixes this issue by invoking acpi_os_wait_events_complete() in the way to "flush" things - it thus should be put to the position after handler is removed from its management container but before it is destructed. The technical concerns are: 1. MTX_NAMESPACE is used to protect things that acpi_os_wait_events_complete() might be waiting for, thus MTX_NAMESPACE must be unlocked before invoking acpi_os_wait_events_complete(). 2. MTX_NAMESPACE is also used to implement the serialization of acpi_install_notify_handler() and acpi_remove_notify_handler(). This patch changes this logic, thus if there are many acpi_install/remove_notify_handler() invoked in parallel, the acpi_os_wait_events_complete() might face the races which could cause it never running to an end. Normally this will require additional code to implement a separate locking facility which is not implemented due to 3. 3. Given ACPICA users will always invoke acpi_install_notify_handler() once during Linux module/device initialization and invoke acpi_remove_notify_handler() once during module/device finalization, problem stated in 2 will not happen in Linux environment due to the mutual exclusive module/device existence, this fix thus is sufficient. Same concerns can apply to acpi_install/remove_gpe_handler(). Reported and tested: Ronald Vink. Fixed: Lv Zheng. References: https://bugzilla.kernel.org/show_bug.cgi?id=60583 Signed-off-by: Lv Zheng <lv.zheng@intel.com> Reported-and-Tested-by: Ronald Vink <ronald.vink@boskalis.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Disassembler: Add decoding of Notify() values.Bob Moore2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | For Notify operators, displays a comment that describe the meaning of the notify value. This patch updates the debugging information that is enabled for CONFIG_ACPI_DEBUG builds. 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: Add support to decode _HID and _CID values.Bob Moore2014-04-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | For _HID and _CID, the disassembler will emit a string that describes the device if the _HID/_CID value is recognized. acpihelp updated also. acpihelp will now search for a specific ID as well as displaying the list of "known" (to ACPICA) IDs. This patch does not affect Linux kernel behavior as the disassembler and the acpihelp are not shipped with it. 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: Unload operator: Emit a warning if and when it is ever used.Bob Moore2014-04-20
| | | | | | | | | | | | | | | | | | We would like to see the ASL for any machine that uses this operator, so emit at least a warning to hopefully draw some attention. 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: gcc-specific: Fix possible issue with the strchr function.Bob Moore2014-04-20
| | | | | | | | | | | | | | | | | | | | | | Some versions of gcc implement strchr via a macro, which either contains bugs or can provoke a bug in the compiler. This change fixes a possible compile-time error when using this function. The problem is usually seen when compiling the getopt.c module. 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 comments for ACPICA name - no functional change.Bob Moore2014-04-20
| | | | | | | | | | | | | | | | | | Change all comments that contain the string "ACPI CA" to "ACPICA" so that the name is standard across the entire source base. 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: utstring: Check array index bound before use.David Binderman2014-04-20
| | | | | | | | | | | | | | | | | | | | | | ACPICA BZ 1077. David Binderman. References: https://bugs.acpica.org/show_bug.cgi?id=1077 Signed-off-by: David Binderman <dcb314@hotmail.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Cc: 3.9+ <stable@vger.kernel.org> # 3.9.x: 42f8fb75: ACPICA: Source restructuring Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * ACPICA: Add EXPORT_SYMBOL macros for install/remove SCI handler interfaces.Bob Moore2014-04-20
| | | | | | | | | | | | | | | | | | These recently added interfaces did not have these macros, used by some hosts. 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 buffer allocation issue for generic_serial_bus region accesses.Lv Zheng2014-04-21
| | | | | | | | | | | | | | | | | | | | | | The size of the buffer allocated for generic_serial_bus region access is not correct. This patch introduces acpi_ex_get_serial_access_length() to be invoked to obtain correct data buffer length. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Reported by: Lan Tianyu <tianyu.lan@intel.com> Acked-by: Lan Tianyu <tianyu.lan@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | Linux 3.15-rc2Linus Torvalds2014-04-20
| |
* | Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds2014-04-20
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull slave-dmaengine fixes from Vinod Koul: "Back from long weekend here in India and now the time to send fixes for slave dmaengine. - Dan's fix of sirf xlate code - Jean's fix for timberland - edma fixes by Sekhar for SG handling and Yuan for changing init call" * 'fixes' of git://git.infradead.org/users/vkoul/slave-dma: dma: fix eDMA driver as a subsys_initcall dmaengine: sirf: off by one in of_dma_sirfsoc_xlate() platform: Fix timberdale dependencies dma: edma: fix incorrect SG list handling
| * | dma: fix eDMA driver as a subsys_initcallYuan Yao2014-04-16
| | | | | | | | | | | | | | | | | | | | | Because of some driver base on DMA, changed the initcall order as subsys_initcall. Signed-off-by: Yuan Yao <yao.yuan@freescale.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dmaengine: sirf: off by one in of_dma_sirfsoc_xlate()Dan Carpenter2014-04-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ">" here should be ">=" or we are one step beyond the end of the sdma->channels[] array. Fixes: 2e041c94628c ('dmaengine: sirf: enable generic dt binding for dma channels') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | platform: Fix timberdale dependenciesJean Delvare2014-04-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | VIDEO_TIMBERDALE selects TIMB_DMA which itself depends on MFD_TIMBERDALE, so VIDEO_TIMBERDALE should either select or depend on MFD_TIMBERDALE as well. I chose to make it depend on it because I think it makes more sense and it is consistent with what other options are doing. Adding a "|| HAS_IOMEM" to the TIMB_DMA dependencies silenced the kconfig warning about unmet direct dependencies but it was wrong: without MFD_TIMBERDALE, TIMB_DMA is useless as the driver has no device to bind to. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Mauro Carvalho Chehab <m.chehab@samsung.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
| * | dma: edma: fix incorrect SG list handlingSekhar Nori2014-04-13
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code to handle any length SG lists calls edma_resume() even before edma_start() is called. This is incorrect because edma_resume() enables edma events on the channel after which CPU (in edma_start) cannot clear posted events by writing to ECR (per the EDMA user's guide). Because of this EDMA transfers fail to start if due to some reason there is a pending EDMA event registered even before EDMA transfers are started. This can happen if an EDMA event is a byproduct of device initialization. Fix this by calling edma_resume() only if it is not the first batch of MAX_NR_SG elements. Without this patch, MMC/SD fails to function on DA850 EVM with DMA. The behaviour is triggered by specific IP and this can explain why the issue was not reported before (example with MMC/SD on AM335x). Tested on DA850 EVM and AM335x EVM-SK using MMC/SD card. Cc: stable@vger.kernel.org # v3.12.x+ Cc: Joel Fernandes <joelf@ti.com> Acked-by: Joel Fernandes <joelf@ti.com> Tested-by: Jon Ringle <jringle@gridpoint.com> Tested-by: Alexander Holler <holler@ahsoftware.de> Reported-by: Jon Ringle <jringle@gridpoint.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* | Merge tag 'iommu-fixes-v3.15-rc1' of ↵Linus Torvalds2014-04-20
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu fixes from Joerg Roedel: "Fixes for regressions: - fix wrong IOMMU enumeration causing some SCSI device drivers initialization failures - ARM-SMMU fixes for a panic condition and a wrong return value" * tag 'iommu-fixes-v3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: iommu/arm-smmu: fix panic in arm_smmu_alloc_init_pte iommu/arm-smmu: Return 0 on unmap failure iommu/vt-d: fix bug in matching PCI devices with DRHD/RMRR descriptors iommu/vt-d: Fix get_domain_for_dev() handling of upstream PCIe bridges iommu/vt-d: fix memory leakage caused by commit ea8ea46
| * \ Merge git://git.infradead.org/iommu-2.6 into iommu/fixesJoerg Roedel2014-04-16
| |\ \
| | * | iommu/vt-d: fix bug in matching PCI devices with DRHD/RMRR descriptorsJiang Liu2014-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit "59ce0515cdaf iommu/vt-d: Update DRHD/RMRR/ATSR device scope caches when PCI hotplug happens" introduces a bug, which fails to match PCI devices with DMAR device scope entries if PCI path array in the entry has more than one level. For example, it fails to handle [1D2h 0466 1] Device Scope Entry Type : 01 [1D3h 0467 1] Entry Length : 0A [1D4h 0468 2] Reserved : 0000 [1D6h 0470 1] Enumeration ID : 00 [1D7h 0471 1] PCI Bus Number : 00 [1D8h 0472 2] PCI Path : 1C,04 [1DAh 0474 2] PCI Path : 00,02 And cause DMA failure on HP DL980 as: DMAR:[fault reason 02] Present bit in context entry is clear dmar: DRHD: handling fault status reg 602 dmar: DMAR:[DMA Read] Request device [02:00.2] fault addr 7f61e000 Reported-and-tested-by: Davidlohr Bueso <davidlohr@hp.com> Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | iommu/vt-d: Fix get_domain_for_dev() handling of upstream PCIe bridgesDavid Woodhouse2014-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 146922ec79 ("iommu/vt-d: Make get_domain_for_dev() take struct device") introduced new variables bridge_bus and bridge_devfn to identify the upstream PCIe to PCI bridge responsible for the given target device. Leaving the original bus/devfn variables to identify the target device itself, now that it is no longer assumed to be PCI and we can no longer trivially find that information. However, the patch failed to correctly use the new variables in all cases; instead using the as-yet-uninitialised 'bus' and 'devfn' variables. Reported-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | iommu/vt-d: fix memory leakage caused by commit ea8ea46Jiang Liu2014-04-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit ea8ea46 "iommu/vt-d: Clean up and fix page table clear/free behaviour" introduces possible leakage of DMA page tables due to: for (pte = page_address(pg); !first_pte_in_page(pte); pte++) { if (dma_pte_present(pte) && !dma_pte_superpage(pte)) freelist = dma_pte_list_pagetables(domain, level - 1, pte, freelist); } For the first pte in a page, first_pte_in_page(pte) will always be true, thus dma_pte_list_pagetables() will never be called and leak DMA page tables if level is bigger than 1. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| * | | iommu/arm-smmu: fix panic in arm_smmu_alloc_init_pteBin Wang2014-04-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | kernel panic happened when iommu_unmap a buffer larger than 2MB, more than expected pmd entries got “invalidated”, due to a wrong range passed to arm_smmu_alloc_init_pte. it was likely a typo, now we fix it, passing the correct "end" address to arm_smmu_alloc_init_pte. Signed-off-by: Bin Wang <binw@marvell.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
| * | | iommu/arm-smmu: Return 0 on unmap failureLaurent Pinchart2014-04-15
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | The IOMMU core expects the unmap operation to return the number of bytes that have been unmapped or 0 on failure, a negative return value being treated like a number of bytes. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
* | | Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds2014-04-20
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf tooling fixes from Ingo Molnar: "Three small tooling fixes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf tools: Improve error reporting perf tools: Adjust symbols in VDSO perf kvm: Fix 'Min time' counting in report command
| * \ \ Merge tag 'perf-urgent-for-mingo' of ↵Ingo Molnar2014-04-20
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf into perf/urgent Pull perf/urgent fixes from Jiri Olsa: User visible changes: * Adjust symbols in VDSO to properly resolve its function names (Vladimir Nikulichev) * Improve error reporting for record session failure (Adrien BAK) * Fix 'Min time' counting in report command (Alexander Yarygin) Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
| | * | | perf tools: Improve error reportingAdrien BAK2014-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the current version, when using perf record, if something goes wrong in tools/perf/builtin-record.c:375 session = perf_session__new(file, false, NULL); The error message: "Not enough memory for reading per file header" is issued. This error message seems to be outdated and is not very helpful. This patch proposes to replace this error message by "Perf session creation failed" I believe this issue has been brought to lkml: https://lkml.org/lkml/2014/2/24/458 although this patch only tackles a (small) part of the issue. Additionnaly, this patch improves error reporting in tools/perf/util/data.c open_file_write. Currently, if the call to open fails, the user is unaware of it. This patch logs the error, before returning the error code to the caller. Reported-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Adrien BAK <adrien.bak@metascale.org> Link: http://lkml.kernel.org/r/1397786443.3093.4.camel@beast [ Reorganize the changelog into paragraphs ] [ Added empty line after fd declaration in open_file_write ] Signed-off-by: Jiri Olsa <jolsa@redhat.com>
| | * | | perf tools: Adjust symbols in VDSOVladimir Nikulichev2014-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pert-report doesn't resolve function names in VDSO: $ perf report --stdio -g flat,0.0,15,callee --sort pid ... 8.76% 0x7fff6b1fe861 __gettimeofday ACE_OS::gettimeofday() ... In this case symbol values should be adjusted the same way as for executables, relocatable objects and prelinked libraries. After fix: $ perf report --stdio -g flat,0.0,15,callee --sort pid ... 8.76% __vdso_gettimeofday __gettimeofday ACE_OS::gettimeofday() Signed-off-by: Vladimir Nikulichev <nvs@tbricks.com> Tested-by: Namhyung Kim <namhyung@kernel.org> Reviewed-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/969812.163009436-sendEmail@nvs Signed-off-by: Jiri Olsa <jolsa@redhat.com>
| | * | | perf kvm: Fix 'Min time' counting in report commandAlexander Yarygin2014-04-19
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Every event in the perf-kvm has a 'stats' structure, which contains max/min/average/etc times of handling this event. The problem is that the 'perf-kvm stat report' command always shows that 'min time' is 0us for every event. Example: # perf kvm stat report Analyze events for all VCPUs: VM-EXIT Samples Samples% Time% Min Time Max Time Avg time [..] 0xB2 MSCH 12 0.07% 0.00% 0us 8us 7.31us ( +- 2.11% ) 0xB2 CHSC 12 0.07% 0.00% 0us 18us 9.39us ( +- 9.49% ) 0xB2 STPX 8 0.05% 0.00% 0us 2us 1.88us ( +- 7.18% ) 0xB2 STSI 7 0.04% 0.00% 0us 44us 16.49us ( +- 38.20% ) [..] This happens because the 'stats' structure is not initialized and stats->min equals to 0. Lets initialize the structure for every event after its allocation using init_stats() function. This initializes stats->min to -1 and makes 'Min time' statistics counting work: # perf kvm stat report Analyze events for all VCPUs: VM-EXIT Samples Samples% Time% Min Time Max Time Avg time [..] 0xB2 MSCH 12 0.07% 0.00% 6us 8us 7.31us ( +- 2.11% ) 0xB2 CHSC 12 0.07% 0.00% 7us 18us 9.39us ( +- 9.49% ) 0xB2 STPX 8 0.05% 0.00% 1us 2us 1.88us ( +- 7.18% ) 0xB2 STSI 7 0.04% 0.00% 1us 44us 16.49us ( +- 38.20% ) [..] Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: David Ahern <dsahern@gmail.com> Link: http://lkml.kernel.org/r/1397053319-2130-3-git-send-email-borntraeger@de.ibm.com [ Fixing the perf examples changelog output ] Signed-off-by: Jiri Olsa <jolsa@redhat.com>
* | | | coredump: fix va_list corruptionEric Dumazet2014-04-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A va_list needs to be copied in case it needs to be used twice. Thanks to Hugh for debugging this issue, leading to various panics. Tested: lpq84:~# echo "|/foobar12345 %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h" >/proc/sys/kernel/core_pattern 'produce_core' is simply : main() { *(int *)0 = 1;} lpq84:~# ./produce_core Segmentation fault (core dumped) lpq84:~# dmesg | tail -1 [ 614.352947] Core dump to |/foobar12345 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 lpq84 (null) pipe failed Notice the last argument was replaced by a NULL (we were lucky enough to not crash, but do not try this on your production machine !) After fix : lpq83:~# echo "|/foobar12345 %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h %h" >/proc/sys/kernel/core_pattern lpq83:~# ./produce_core Segmentation fault lpq83:~# dmesg | tail -1 [ 740.800441] Core dump to |/foobar12345 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 lpq83 pipe failed Fixes: 5fe9d8ca21cc ("coredump: cn_vprintf() has no reason to call vsnprintf() twice") Signed-off-by: Eric Dumazet <edumazet@google.com> Diagnosed-by: Hugh Dickins <hughd@google.com> Acked-by: Oleg Nesterov <oleg@redhat.com> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: stable@vger.kernel.org # 3.11+ Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds2014-04-19
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fix from Ingo Molnar: "This fixes the preemption-count imbalance crash reported by Owen Kibel" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mce: Fix CMCI preemption bugs
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-24 04:56:29 -0500