lwn.git/drivers/acpi/osl.c, branch v4.11

ACPICA: Hardware: Add sleep register hooks

2017-01-02T22:18:41+00:00

ACPICA commit ba665dc8e20d9f7730466a659564dd6c557a6cbc In Linux, para-virtualization implmentation hooks critical register writes to prevent real hardware operations. This increases divergences when the sleep registers are cracked in Linux resident ACPICA. This patch tries to introduce a single OSL to reduce the divergences. Link: https://github.com/acpica/acpica/commit/ba665dc8 Signed-off-by: Lv Zheng Signed-off-by: Bob Moore Signed-off-by: Rafael J. Wysocki

Replace with globally

2016-12-24T19:46:01+00:00

This was entirely automated, using the script by Al: PATT='^[[:blank:]]*#[[:blank:]]*include[[:blank:]]*' sed -i -e "s!$PATT!#include !" \ $(git grep -l "$PATT"|grep -v ^include/linux/uaccess.h) to do the replacement at the end of the merge window. Requested-by: Al Viro Signed-off-by: Linus Torvalds

Merge branches 'acpica' and 'acpi-scan'

2016-12-22T13:34:24+00:00

* acpica: ACPI / osl: Remove deprecated acpi_get_table_with_size()/early_acpi_os_unmap_memory() ACPI / osl: Remove acpi_get_table_with_size()/early_acpi_os_unmap_memory() users ACPICA: Tables: Allow FADT to be customized with virtual address ACPICA: Tables: Back port acpi_get_table_with_size() and early_acpi_os_unmap_memory() from Linux kernel * acpi-scan: ACPI: do not warn if _BQC does not exist

ACPI / osl: Remove deprecated acpi_get_table_with_size()/early_acpi_os_unmap_memory()

2016-12-21T01:36:38+00:00

Since all users are cleaned up, remove the 2 deprecated APIs due to no users. As a Linux variable rather than an ACPICA variable, acpi_gbl_permanent_mmap is renamed to acpi_permanent_mmap to have a consistent coding style across entire Linux ACPI subsystem. Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki

ACPICA: Tables: Back port acpi_get_table_with_size() and early_acpi_os_unmap_memory() from Linux kernel

2016-12-21T01:36:38+00:00

ACPICA commit cac6790954d4d752a083e6122220b8a22febcd07 This patch back ports Linux acpi_get_table_with_size() and early_acpi_os_unmap_memory() into ACPICA upstream to reduce divergences. The 2 APIs are used by Linux as table management APIs for long time, it contains a hidden logic that during the early stage, the mapped tables should be unmapped before the early stage ends. During the early stage, tables are handled by the following sequence: acpi_get_table_with_size(); parse the table early_acpi_os_unmap_memory(); During the late stage, tables are handled by the following sequence: acpi_get_table(); parse the table Linux uses acpi_gbl_permanent_mmap to distinguish the early stage and the late stage. The reasoning of introducing acpi_get_table_with_size() is: ACPICA will remember the early mapped pointer in acpi_get_table() and Linux isn't able to prevent ACPICA from using the wrong early mapped pointer during the late stage as there is no API provided from ACPICA to be an inverse of acpi_get_table() to forget the early mapped pointer. But how ACPICA can work with the early/late stage requirement? Inside of ACPICA, tables are ensured to be remained in "INSTALLED" state during the early stage, and they are carefully not transitioned to "VALIDATED" state until the late stage. So the same logic is in fact implemented inside of ACPICA in a different way. The gap is only that the feature is not provided to the OSPMs in an accessible external API style. It then is possible to fix the gap by providing an inverse of acpi_get_table() from ACPICA, so that the two Linux sequences can be combined: acpi_get_table(); parse the table acpi_put_table(); In order to work easier with the current Linux code, acpi_get_table() and acpi_put_table() is implemented in a usage counting based style: 1. When the usage count of the table is increased from 0 to 1, table is mapped and .Pointer is set with the mapping address (VALIDATED); 2. When the usage count of the table is decreased from 1 to 0, .Pointer is unset and the mapping address is unmapped (INVALIDATED). So that we can deploy the new APIs to Linux with minimal effort by just invoking acpi_get_table() in acpi_get_table_with_size() and invoking acpi_put_table() in early_acpi_os_unmap_memory(). Lv Zheng. Link: https://github.com/acpica/acpica/commit/cac67909 Signed-off-by: Lv Zheng Signed-off-by: Bob Moore Signed-off-by: Rafael J. Wysocki

ACPI / osl: Refactor acpi_os_get_root_pointer() to drop 'else':s

2016-12-06T21:13:58+00:00

There are few 'else' keywords which are redundant in acpi_os_get_root_pointer(). Refactor function to get rid of them. While here, switch to pr_err() instead of printk(KERN_ERR ...). Signed-off-by: Andy Shevchenko Signed-off-by: Rafael J. Wysocki

ACPI / osl: Propagate actual error code for kstrtoul()

2016-12-06T21:13:57+00:00

There is no need to override the error code returned by kstrtoul(). Propagate it directly to the caller. Signed-off-by: Andy Shevchenko Signed-off-by: Rafael J. Wysocki

acpi_os_vprintf: Use printk_get_level() to avoid unnecessary KERN_CONT

2016-10-12T19:46:37+00:00

acpi_os_vprintf currently always uses a KERN_CONT prefix which may be followed immediately by a proper KERN_. Check if the buffer already has a KERN_ at the start of the buffer and avoid the unnecessary KERN_CONT. Signed-off-by: Joe Perches Signed-off-by: Rafael J. Wysocki

treewide: replace obsolete _refok by __ref

2016-08-02T21:31:41+00:00

There was only one use of __initdata_refok and __exit_refok __init_refok was used 46 times against 82 for __ref. Those definitions are obsolete since commit 312b1485fb50 ("Introduce new section reference annotations tags: __ref, __refdata, __refconst") This patch removes the following compatibility definitions and replaces them treewide. /* compatibility defines */ #define __init_refok __ref #define __initdata_refok __refdata #define __exit_refok __ref I can also provide separate patches if necessary. (One patch per tree and check in 1 month or 2 to remove old definitions) [akpm@linux-foundation.org: coding-style fixes] Link: http://lkml.kernel.org/r/1466796271-3043-1-git-send-email-fabf@skynet.be Signed-off-by: Fabian Frederick Cc: Ingo Molnar Cc: Sam Ravnborg Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge branches 'acpi-numa', 'acpi-tables' and 'acpi-osi'

2016-05-16T14:45:25+00:00

* acpi-numa: ACPI / SRAT: fix SRAT parsing order with both LAPIC and X2APIC present * acpi-tables: ACPI / tables: Fix DSDT override mechanism ACPI / tables: Convert initrd table override to table upgrade mechanism ACPI / x86: Cleanup initrd related code ACPI / tables: Move table override mechanisms to tables.c * acpi-osi: ACPI / osi: Collect _OSI handling into one single file ACPI / osi: Cleanup coding style issues before creating a separate OSI source file ACPI / osi: Cleanup OSI handling code to use bool ACPI / osi: Fix default _OSI(Darwin) support ACPI / osi: Add acpi_osi=!! to allow reverting acpi_osi=! ACPI / osi: Cleanup _OSI("Linux") related code before introducing new support ACPI / osi: Fix an issue that acpi_osi=!* cannot disable ACPICA internal strings Conflicts: drivers/acpi/internal.h