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It was complained about that when the trace file is read, that the tracing is disabled, as the iterator expects writing to the buffer it reads is not updated. Several steps are needed to make the iterator handle a writer, by testing if things have changed as it reads. This step is to make ring_buffer_empty() expect the buffer to be changing. Note if the current location of the iterator is overwritten, then it will return false as new data is being added. Note, that this means that data will be skipped. Link: http://lkml.kernel.org/r/20200317213415.870741809@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |
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arch | ||
block | ||
certs | ||
crypto | ||
Documentation | ||
drivers | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
LICENSES | ||
mm | ||
net | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.clang-format | ||
.cocciconfig | ||
.get_maintainer.ignore | ||
.gitattributes | ||
.gitignore | ||
.mailmap | ||
COPYING | ||
CREDITS | ||
Kbuild | ||
Kconfig | ||
MAINTAINERS | ||
Makefile | ||
README |
Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.