From: Lv Zheng <lv.zheng@intel.com>
To: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Len Brown <len.brown@intel.com>
Cc: Lv Zheng <lv.zheng@intel.com>, Lv Zheng <zetalog@gmail.com>,
<linux-kernel@vger.kernel.org>,
linux-acpi@vger.kernel.org
Subject: [PATCH v3 0/3] ACPI / debugger: Add kernel flushing support
Date: Fri, 22 Jul 2016 12:16:49 +0800 [thread overview]
Message-ID: <cover.1469155242.git.lv.zheng@intel.com> (raw)
In-Reply-To: <cover.1468464391.git.lv.zheng@intel.com>
AML debugger is implemented in the kernel as a character device located in
the debugfs. Currently, when its batch mode is used, the userspace tool
needs to flush the logs/prompts remained in the kernel output buffer, this
is implemented in an inefficient way in the userspace by polling the IO and
reading everything out.
This patch introduces a kernel space flushing support, so that userspace
can invoke ioctl() to put the driver into a state waiting for new commands,
all kernel space logs/prompts will be automatically discarded by ioctl().
Lv Zheng (3):
ACPI / debugger: Add kernel flushing support
tools/power/acpi/acpidbg: Use new flushing mechanism
tools/power/acpi/acpidbg: Add multi-commands support in batch mode
drivers/acpi/acpi_dbg.c | 85 +++++++++++++++++++++--
include/linux/acpi.h | 1 +
include/uapi/linux/acpi-ioctls.h | 21 ++++++
tools/power/acpi/tools/acpidbg/acpidbg.c | 110 +++++++++++++++++-------------
4 files changed, 165 insertions(+), 52 deletions(-)
create mode 100644 include/uapi/linux/acpi-ioctls.h
--
1.7.10
next prev parent reply other threads:[~2016-07-22 4:16 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-14 2:52 [PATCH 0/3] ACPI / debugger: Add kernel flushing support Lv Zheng
2016-07-14 2:52 ` [PATCH 1/3] debugfs: Add .fsync() callback proxy support Lv Zheng
2016-07-19 8:13 ` Zheng, Lv
2016-07-14 2:52 ` [PATCH 2/3] ACPI / debugger: Add kernel flushing support Lv Zheng
2016-07-14 2:52 ` [PATCH 3/3] tools/power/acpi/acpidbg: Use new flushing mechanism Lv Zheng
2016-07-19 10:00 ` [PATCH v2 0/2] ACPI / debugger: Add kernel flushing support Lv Zheng
2016-07-19 10:00 ` [PATCH v2 1/2] " Lv Zheng
2016-07-21 13:43 ` Rafael J. Wysocki
2016-07-22 0:34 ` Zheng, Lv
2016-07-19 10:00 ` [PATCH v2 2/2] tools/power/acpi/acpidbg: Use new flushing mechanism Lv Zheng
2016-07-20 8:12 ` [PATCH] tools/power/acpi/tools/acpidbg: Add multi-commands support in batch mode Lv Zheng
2016-07-21 13:45 ` Rafael J. Wysocki
2016-07-22 0:26 ` Zheng, Lv
2016-07-22 4:16 ` Lv Zheng [this message]
2016-07-22 4:16 ` [PATCH v3 1/3] ACPI / debugger: Add kernel flushing support Lv Zheng
2016-07-22 4:17 ` [PATCH v3 2/3] tools/power/acpi/acpidbg: Use new flushing mechanism Lv Zheng
2016-07-22 4:17 ` [PATCH v3 3/3] tools/power/acpi/acpidbg: Add multi-commands support in batch mode Lv Zheng
2016-07-26 11:01 ` [PATCH v4 0/3] ACPI / debugger: Add kernel flushing support Lv Zheng
2016-07-26 11:01 ` [PATCH v4 1/3] " Lv Zheng
2016-08-17 0:25 ` Rafael J. Wysocki
2016-08-17 2:39 ` Zheng, Lv
2016-07-26 11:01 ` [PATCH v4 2/3] tools/power/acpi/acpidbg: Use new flushing mechanism Lv Zheng
2016-08-17 0:29 ` Rafael J. Wysocki
2016-08-17 2:41 ` Zheng, Lv
2016-07-26 11:01 ` [PATCH v4 3/3] tools/power/acpi/acpidbg: Add multi-commands support in batch mode Lv Zheng
2016-08-17 0:30 ` Rafael J. Wysocki
2016-08-17 4:31 ` Zheng, Lv
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