perf beauty: Add a generator for MAP_ mmap's flag constants
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>
This commit is contained in:
parent
89eb1f3b7f
commit
80ee5668b8
32
tools/perf/trace/beauty/mmap_flags.sh
Executable file
32
tools/perf/trace/beauty/mmap_flags.sh
Executable file
|
@ -0,0 +1,32 @@
|
|||
#!/bin/sh
|
||||
# SPDX-License-Identifier: LGPL-2.1
|
||||
|
||||
if [ $# -ne 2 ] ; then
|
||||
[ $# -eq 1 ] && hostarch=$1 || hostarch=`uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/`
|
||||
header_dir=tools/include/uapi/asm-generic
|
||||
arch_header_dir=tools/arch/${hostarch}/include/uapi/asm
|
||||
else
|
||||
header_dir=$1
|
||||
arch_header_dir=$2
|
||||
fi
|
||||
|
||||
arch_mman=${arch_header_dir}/mman.h
|
||||
|
||||
# those in egrep -vw are flags, we want just the bits
|
||||
|
||||
printf "static const char *mmap_flags[] = {\n"
|
||||
regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+MAP_([[:alnum:]_]+)[[:space:]]+(0x[[:xdigit:]]+)[[:space:]]*.*'
|
||||
egrep -q $regex ${arch_mman} && \
|
||||
(egrep $regex ${arch_mman} | \
|
||||
sed -r "s/$regex/\2 \1/g" | \
|
||||
xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n")
|
||||
egrep -q '#[[:space:]]*include[[:space:]]+<uapi/asm-generic/mman.*' ${arch_mman} &&
|
||||
(egrep $regex ${header_dir}/mman-common.h | \
|
||||
egrep -vw 'MAP_(UNINITIALIZED|TYPE|SHARED_VALIDATE)' | \
|
||||
sed -r "s/$regex/\2 \1/g" | \
|
||||
xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n")
|
||||
egrep -q '#[[:space:]]*include[[:space:]]+<uapi/asm-generic/mman.h>.*' ${arch_mman} &&
|
||||
(egrep $regex ${header_dir}/mman.h | \
|
||||
sed -r "s/$regex/\2 \1/g" | \
|
||||
xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n")
|
||||
printf "};\n"
|
Loading…
Reference in a new issue