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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>
33 lines
1.2 KiB
Bash
Executable File
33 lines
1.2 KiB
Bash
Executable File
#!/bin/sh
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# SPDX-License-Identifier: LGPL-2.1
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if [ $# -ne 2 ] ; then
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[ $# -eq 1 ] && hostarch=$1 || hostarch=`uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/`
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header_dir=tools/include/uapi/asm-generic
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arch_header_dir=tools/arch/${hostarch}/include/uapi/asm
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else
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header_dir=$1
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arch_header_dir=$2
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fi
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arch_mman=${arch_header_dir}/mman.h
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# those in egrep -vw are flags, we want just the bits
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printf "static const char *mmap_flags[] = {\n"
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regex='^[[:space:]]*#[[:space:]]*define[[:space:]]+MAP_([[:alnum:]_]+)[[:space:]]+(0x[[:xdigit:]]+)[[:space:]]*.*'
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egrep -q $regex ${arch_mman} && \
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(egrep $regex ${arch_mman} | \
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sed -r "s/$regex/\2 \1/g" | \
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xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n")
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egrep -q '#[[:space:]]*include[[:space:]]+<uapi/asm-generic/mman.*' ${arch_mman} &&
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(egrep $regex ${header_dir}/mman-common.h | \
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egrep -vw 'MAP_(UNINITIALIZED|TYPE|SHARED_VALIDATE)' | \
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sed -r "s/$regex/\2 \1/g" | \
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xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n")
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egrep -q '#[[:space:]]*include[[:space:]]+<uapi/asm-generic/mman.h>.*' ${arch_mman} &&
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(egrep $regex ${header_dir}/mman.h | \
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sed -r "s/$regex/\2 \1/g" | \
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xargs printf "\t[ilog2(%s) + 1] = \"%s\",\n")
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printf "};\n"
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