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Message-Id: <cover.1468464391.git.lv.zheng@intel.com>
Date: Thu, 14 Jul 2016 10:52:01 +0800
From: Lv Zheng <lv.zheng@...el.com>
To: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
"Rafael J. Wysocki" <rjw@...ysocki.net>,
Len Brown <len.brown@...el.com>
Cc: Lv Zheng <lv.zheng@...el.com>, Lv Zheng <zetalog@...il.com>,
<linux-kernel@...r.kernel.org>, linux-acpi@...r.kernel.org
Subject: [PATCH 0/3] ACPI / debugger: Add kernel flushing support
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 fsync() to put the driver into a state waiting for new commands,
all kernel space logs/prompts will be automatically discarded by fsync().
Lv Zheng (3):
debugfs: Add .fsync() callback proxy support
ACPI / debugger: Add kernel flushing support
tools/power/acpi/acpidbg: Use new flushing mechanism
drivers/acpi/acpi_dbg.c | 94 ++++++++++++++++++++++++++++--
fs/debugfs/file.c | 6 ++
tools/power/acpi/tools/acpidbg/acpidbg.c | 49 ++--------------
3 files changed, 101 insertions(+), 48 deletions(-)
--
1.7.10
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