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    SubjectRe: [PATCH v4 0/7] ACPICA / debugger: Add in-kernel AML debugger support
    Date
    On Thursday, December 03, 2015 10:40:00 AM Lv Zheng wrote:
    > This patchset enables ACPICA debugger for Linux kernel and implements a
    > userspace utility to access it.
    >
    > A. Build the AML debugger
    > In order to build the kernel support of AML debugger, the following kconfig
    > items should be enabled:
    > CONFIG_ACPI_DEBUG=y
    > CONFIG_ACPI_DEBUGGER=y
    > CONFIG_DEBUG_FS=y
    > CONFIG_ACPI_DEBUGGER_USER=m
    > The userspace tool can be found at tools/power/acpi/tools/acpidbg. To
    > build this utility, staying in tools folder and type "make acpi".
    >
    > B. Load the AML debugger during runtime
    > In order to use the in-kernel AML debugger, the following command should be
    > executed using root user:
    > # modprobe acpi_dbg
    > # mount -t debugfs none /sys/kernel/debug
    > # acpidbg
    >
    > C. Batch mode
    > In order to support scripts, the userspace utility also supports single
    > command batch mode:
    > # acpidbg -b "help"
    > # acpidbg -b "tables"
    > # acpidbg -b "find _LID"
    > # acpidbg -b "execute \_SB.LID0._LID"
    > You can find the documentation about the ACPICA debugger commands in:
    > https://acpica.org/sites/acpica/files/acpica-reference_17.pdf
    > (The latest document can be found at https://acpica.org/documentation)
    > And refer to the chapter - ACPICA debugger reference to obtain the full
    > description of the debugger commands. Note that not all commands are
    > supported by an in-kernel AML debugger.
    >
    > D. Unload the AML debugger during runtime
    > After terminating all acpidbg instances, the following command can be
    > executed to remove the AML debugger from kernel:
    > # rmmod acpi_dbg
    >
    > The following tasks are not completed:
    > 1. .flush() support in the kernel debugger IO driver.
    > 2. multi-commands batch mode.
    >
    > v2:
    > 1. Fix a help message issue for the userspace acpidbg utility (this is a
    > typo fix).
    > 2. Fix a batch mode issue by adding "\n" to the prompt sequence (this was
    > lost due to too many rebase cycles).
    > 3. Fix kconfig dependency for an intermediate patch (this is only useful in
    > case the latter patches are reverted).
    > 4. Add more accurate runtime debugger stub mechanism and remove old
    > ACPI_DEBUGGER_EXEC() stub mechanism.
    > 5. Add x86 acpi_os_readable() support.
    >
    > v3:
    > 1. Remove acpi_os_readable() support from this patchset. It's sent separately.
    > 2. Delete some deprecated comments.
    >
    > v4:
    > 1. Rebase patch 4/6 because of Kconfig changes.
    > 2. Include acpi_os_readable() back as no objections, also test result is
    > positive.
    >
    > Chen Yu (1):
    > ACPI / x86: introduce acpi_os_readable() support
    >
    > Colin Ian King (1):
    > ACPICA: Debugger: Remove unnecessary status check
    >
    > Lv Zheng (5):
    > ACPICA: Debugger: Convert some mechanisms to OSPM specific
    > ACPICA: Debugger: Fix runtime stub issues of ACPI_DEBUGGER_EXEC using
    > different stub mechanism
    > ACPI / debugger: Add IO interface to access debugger functionalities
    > tools/power/acpi: Add userspace AML interface support
    > ACPI / debugger: Add module support for ACPI debugger

    OK, I'm queuing up [1-6/7] for 4.5.

    The [7/7] needs at least to be looked at by the x86 maintainers.

    Thanks,
    Rafael



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