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eh_elf
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vanilla_ti
| Author | SHA1 | Date | |
|---|---|---|---|
| 8b09fabf5a |
4 changed files with 0 additions and 218 deletions
108
.gitignore
vendored
108
.gitignore
vendored
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@ -1,111 +1,3 @@
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#
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# NOTE! Don't add files that are generated in specific
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# subdirectories here. Add them in the ".gitignore" file
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# in that subdirectory instead.
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#
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# NOTE! Please use 'git ls-files -i --exclude-standard'
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# command after changing this file, to see if there are
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# any tracked files which get ignored after the change.
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#
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# Normal rules (sorted alphabetically)
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#
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.*
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*.a
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*.asn1.[ch]
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*.bin
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*.bz2
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*.c.[012]*.*
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*.dtb
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*.dtb.S
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*.dwo
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*.elf
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*.gcno
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*.gz
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*.i
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*.ko
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*.lex.c
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*.ll
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*.lst
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*.lz4
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*.lzma
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*.lzo
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*.mod.c
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*.o
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*.o.*
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*.order
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*.patch
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*.s
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*.so
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*.so.dbg
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*.su
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*.symtypes
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*.tab.[ch]
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*.tar
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*.xz
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Module.symvers
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modules.builtin
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#
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# RPM spec file (make rpm-pkg)
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#
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/*.spec
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#
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# git files that we don't want to ignore even if they are dot-files
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#
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!.gitignore
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!.mailmap
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!.cocciconfig
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!.clang-format
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#
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# Generated include files
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#
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include/config
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include/generated
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include/ksym
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arch/*/include/generated
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# stgit generated dirs
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patches-*
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# quilt's files
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patches
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series
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# cscope files
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cscope.*
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ncscope.*
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# gnu global files
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GPATH
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GRTAGS
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GSYMS
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GTAGS
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# id-utils files
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ID
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*.orig
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*~
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\#*#
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#
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# Leavings from module signing
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#
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extra_certificates
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signing_key.pem
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signing_key.priv
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signing_key.x509
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x509.genkey
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# Kconfig presets
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all.config
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# Kdevelop4
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*.kdev4
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# Perf specific
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PERF-CFLAGS
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PERF-GUI-VARS
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PERF-VERSION-FILE
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25
README.md
25
README.md
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@ -1,25 +0,0 @@
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# Perf, `eh_elf` flavour
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This repository contains a fork of perf, the profiler from the Linux kernel
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repository, modified in a way to interface it with `eh_elfs` and (hopefully)
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speeding it up on complicated DWARF frames
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## Compiling
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Clone the [Linux kernel
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repository](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git)
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or get a tarball of its source tree, then replace the `tools/perf` directory
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with a clone of this repo. If you wish to clone the Linux source tree, and if
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you're not going to work on it, you might consider passing `--depth=1` to `git
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clone`, in order not to download the history, to keep the download light.
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Then, `cd tools/perf` and `make`, without forgetting to give the compilation
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tools the right version of `libunwind`, eg. by setting `LD_RUN_PATH` and
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`LIBUNWIND_DIR`:
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```sh
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export LD_RUN_PATH=$HOME/local/libunwind/lib
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export LIBUNWIND_DIR=$HOME/local/libunwind
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make
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```
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This works at least with the linux repository at v4.17-rc5
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43
make-target
43
make-target
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@ -1,43 +0,0 @@
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#!/bin/bash
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case "$1" in
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'eh_elf')
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TARGET='eh_elf'
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LIBUNWIND='eh_elf'
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branch='eh_elf'
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;;
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'vanilla')
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TARGET='vanilla'
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LIBUNWIND='vanilla'
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branch='vanilla_timer'
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;;
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'vanilla-nocache')
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TARGET='vanilla-nocache'
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LIBUNWIND='vanilla'
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branch='vanilla_timer_nocache'
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;;
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*)
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>&2 echo "Usage: $0 [ eh_elf | vanilla | vanilla-nocache ]"
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exit 1
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esac
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original_branch=$(git rev-parse --abbrev-ref HEAD)
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if ! git checkout "$branch" ; then
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>&2 echo "Failed to checkout $branch - maybe your git isn't clean?"
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exit 2
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fi
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LIBUNWIND_PREFIX="$HOME/local/libunwind-$LIBUNWIND-dbg"
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LIBUNWIND_LIB="$LIBUNWIND_PREFIX/lib"
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PREFIX="$HOME/local/perf-$TARGET"
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export CPATH=$LIBUNWIND_PREFIX/include
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export LD_LIBRARY_PATH=$LIBUNWIND_LIB
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export EXTRA_CFLAGS=-L$LIBUNWIND_LIB
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make -j
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mkdir -p $PREFIX/bin
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cp "perf" "$PREFIX/bin/"
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git checkout "$original_branch"
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@ -472,42 +472,6 @@ get_proc_name(unw_addr_space_t __maybe_unused as,
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return -UNW_EINVAL;
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}
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static void
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get_mmap(unw_mmap_entry_t** entries, size_t* count, void* arg) {
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struct unwind_info* unw_info = arg;
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struct map_groups* mgroups = unw_info->thread->mg;
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int id;
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unw_mmap_entry_t* alloc_entries = NULL;
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// == Count entries ==
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*count = 0;
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for(struct map* map = map_groups__first(mgroups, MAP__FUNCTION);
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map;
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map = map_groups__next(map))
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{
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++(*count);
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}
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// == Allocate ==
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alloc_entries = (unw_mmap_entry_t*)
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malloc(sizeof(unw_mmap_entry_t) * (*count)); // Will be free'd by user
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*entries = alloc_entries;
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// == Fill entries ==
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id = 0;
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for(struct map* map = map_groups__first(mgroups, MAP__FUNCTION);
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map;
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map = map_groups__next(map), ++id)
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{
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alloc_entries[id].beg_ip = map->start;
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alloc_entries[id].end_ip = map->end;
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alloc_entries[id].offset = map->start - map->map_ip(map, map->start);
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alloc_entries[id].object_name =
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malloc(strlen(map->dso->long_name) + 1);
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strcpy(alloc_entries[id].object_name, map->dso->long_name);
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}
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}
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static int access_dso_mem(struct unwind_info *ui, unw_word_t addr,
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unw_word_t *data)
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{
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@ -663,12 +627,6 @@ static unw_accessors_t accessors = {
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.access_fpreg = access_fpreg,
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.resume = resume,
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.get_proc_name = get_proc_name,
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.eh_elf_init = {
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.init_mode = UNW_EH_ELF_INIT_MMAP,
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.init_data = {
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.get_mmap = get_mmap,
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}
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}
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};
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static int _unwind__prepare_access(struct thread *thread)
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