80ee5668b8
It'll use tools/{arch}/*,include copies of mman.h to generate a table to be used by tools, initially by the 'mmap' beautifiers in 'perf trace', but that could also be used to translate from a string constant to the integer value to be used in a eBPF or tracefs tracepoint filter. Tested for all archs using: $ for arch in `ls tools/arch/` ; \ do echo $arch ; tools/perf/trace/beauty/mmap_flags.sh $arch ; \ done | less Example for alpha, an oddball, doesn't include any header, defines all its stuff: $ tools/perf/trace/beauty/mmap_flags.sh alpha static const char *mmap_flags[] = { [ilog2(0x10) + 1] = "ANONYMOUS", [ilog2(0x02000) + 1] = "DENYWRITE", [ilog2(0x04000) + 1] = "EXECUTABLE", [ilog2(0x100) + 1] = "FIXED", [ilog2(0x01000) + 1] = "GROWSDOWN", [ilog2(0x100000) + 1] = "HUGETLB", [ilog2(0x08000) + 1] = "LOCKED", [ilog2(0x40000) + 1] = "NONBLOCK", [ilog2(0x10000) + 1] = "NORESERVE", [ilog2(0x20000) + 1] = "POPULATE", [ilog2(0x02) + 1] = "PRIVATE", [ilog2(0x01) + 1] = "SHARED", [ilog2(0x80000) + 1] = "STACK", }; $ Common case, my workstation, defines one entry (MAP_32BIT), then includes mman.h, which gets it to include mman-common.h too: $ tools/perf/trace/beauty/mmap_flags.sh static const char *mmap_flags[] = { [ilog2(0x40) + 1] = "32BIT", [ilog2(0x01) + 1] = "SHARED", [ilog2(0x02) + 1] = "PRIVATE", [ilog2(0x10) + 1] = "FIXED", [ilog2(0x20) + 1] = "ANONYMOUS", [ilog2(0x100000) + 1] = "FIXED_NOREPLACE", [ilog2(0x0100) + 1] = "GROWSDOWN", [ilog2(0x0800) + 1] = "DENYWRITE", [ilog2(0x1000) + 1] = "EXECUTABLE", [ilog2(0x2000) + 1] = "LOCKED", [ilog2(0x4000) + 1] = "NORESERVE", [ilog2(0x8000) + 1] = "POPULATE", [ilog2(0x10000) + 1] = "NONBLOCK", [ilog2(0x20000) + 1] = "STACK", [ilog2(0x40000) + 1] = "HUGETLB", [ilog2(0x80000) + 1] = "SYNC", }; $ uname -m x86_64 $ Sparc, that defines a bunch then includes just mman-common.h: $ tools/perf/trace/beauty/mmap_flags.sh sparc static const char *mmap_flags[] = { [ilog2(0x0800) + 1] = "DENYWRITE", [ilog2(0x1000) + 1] = "EXECUTABLE", [ilog2(0x0200) + 1] = "GROWSDOWN", [ilog2(0x40000) + 1] = "HUGETLB", [ilog2(0x100) + 1] = "LOCKED", [ilog2(0x10000) + 1] = "NONBLOCK", [ilog2(0x40) + 1] = "NORESERVE", [ilog2(0x8000) + 1] = "POPULATE", [ilog2(0x20000) + 1] = "STACK", [ilog2(0x01) + 1] = "SHARED", [ilog2(0x02) + 1] = "PRIVATE", [ilog2(0x10) + 1] = "FIXED", [ilog2(0x20) + 1] = "ANONYMOUS", [ilog2(0x100000) + 1] = "FIXED_NOREPLACE", }; [acme@jouet perf]$ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-xydeh491z8fkgglcmqnl5thj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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arch | ||
block | ||
certs | ||
crypto | ||
Documentation | ||
drivers | ||
firmware | ||
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.