59486fb0c8
Sometimes we want ftrace display more and longer information about the trace. $ sudo perf ftrace -G '*' 2) 0.979 us | mutex_unlock(); 2) 1.540 us | __fsnotify_parent(); 2) 0.433 us | fsnotify(); $ sudo perf ftrace -G '*' --graph-opts verbose 14160.770883 | 0) <...>-47814 | .... | 1.289 us | mutex_unlock(); 14160.770886 | 0) <...>-47814 | .... | 1.624 us | __fsnotify_parent(); 14160.770887 | 0) <...>-47814 | .... | 0.636 us | fsnotify(); 14160.770888 | 0) <...>-47814 | .... | 0.328 us | __sb_end_write(); 14160.770888 | 0) <...>-47814 | d... | 0.430 us | fpregs_assert_state_consistent(); 14160.770889 | 0) <...>-47814 | d... | | do_syscall_64() { 14160.770889 | 0) <...>-47814 | .... | | __x64_sys_close() { Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-13-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Documentation | ||
LICENSES | ||
arch | ||
block | ||
certs | ||
crypto | ||
drivers | ||
fs | ||
include | ||
init | ||
ipc | ||
kernel | ||
lib | ||
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 |
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.