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-rw-r--r--scripts/Makefile.btf2
-rw-r--r--scripts/Makefile.build4
-rwxr-xr-xscripts/checkpatch.pl5
-rw-r--r--scripts/coccinelle/misc/secs_to_jiffies.cocci10
-rwxr-xr-xscripts/extract-fwblobs30
-rw-r--r--scripts/gdb/linux/cpus.py22
-rw-r--r--scripts/gdb/linux/symbols.py44
-rw-r--r--scripts/gdb/linux/utils.py35
-rwxr-xr-xscripts/generate_rust_analyzer.py17
-rwxr-xr-xscripts/get_maintainer.pl49
-rwxr-xr-xscripts/link-vmlinux.sh4
-rwxr-xr-xscripts/make_fit.py6
-rw-r--r--scripts/rustdoc_test_gen.rs8
-rw-r--r--scripts/sorttable.c411
-rwxr-xr-xscripts/tags.sh1
-rwxr-xr-xscripts/tracing/draw_functrace.py129
16 files changed, 603 insertions, 174 deletions
diff --git a/scripts/Makefile.btf b/scripts/Makefile.btf
index c3cbeb13de50..fbaaec2187e5 100644
--- a/scripts/Makefile.btf
+++ b/scripts/Makefile.btf
@@ -24,7 +24,7 @@ else
pahole-flags-$(call test-ge, $(pahole-ver), 126) = -j$(JOBS) --btf_features=encode_force,var,float,enum64,decl_tag,type_tag,optimized_func,consistent_func,decl_tag_kfuncs
ifneq ($(KBUILD_EXTMOD),)
-module-pahole-flags-$(call test-ge, $(pahole-ver), 126) += --btf_features=distilled_base
+module-pahole-flags-$(call test-ge, $(pahole-ver), 128) += --btf_features=distilled_base
endif
endif
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 993708d11874..56be83024851 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -226,7 +226,7 @@ $(obj)/%.lst: $(obj)/%.c FORCE
# Compile Rust sources (.rs)
# ---------------------------------------------------------------------------
-rust_allowed_features := asm_const,asm_goto,arbitrary_self_types,lint_reasons
+rust_allowed_features := asm_const,asm_goto,arbitrary_self_types,lint_reasons,raw_ref_op
# `--out-dir` is required to avoid temporaries being created by `rustc` in the
# current working directory, which may be not accessible in the out-of-tree
@@ -237,7 +237,7 @@ rust_common_cmd = \
-Zallow-features=$(rust_allowed_features) \
-Zcrate-attr=no_std \
-Zcrate-attr='feature($(rust_allowed_features))' \
- -Zunstable-options --extern kernel \
+ -Zunstable-options --extern pin_init --extern kernel \
--crate-type rlib -L $(objtree)/rust/ \
--crate-name $(basename $(notdir $@)) \
--sysroot=/dev/null \
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 7b28ad331742..784912f570e9 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -113,7 +113,8 @@ Options:
--max-line-length=n set the maximum line length, (default $max_line_length)
if exceeded, warn on patches
requires --strict for use with --file
- --min-conf-desc-length=n set the min description length, if shorter, warn
+ --min-conf-desc-length=n set the minimum description length for config symbols
+ in lines, if shorter, warn (default $min_conf_desc_length)
--tab-size=n set the number of spaces for tab (default $tabsize)
--root=PATH PATH to the kernel tree root
--no-summary suppress the per-file summary
@@ -3645,7 +3646,7 @@ sub process {
$help_length < $min_conf_desc_length) {
my $stat_real = get_stat_real($linenr, $ln - 1);
WARN("CONFIG_DESCRIPTION",
- "please write a help paragraph that fully describes the config symbol\n" . "$here\n$stat_real\n");
+ "please write a help paragraph that fully describes the config symbol with at least $min_conf_desc_length lines\n" . "$here\n$stat_real\n");
}
}
diff --git a/scripts/coccinelle/misc/secs_to_jiffies.cocci b/scripts/coccinelle/misc/secs_to_jiffies.cocci
index 8bbb2884ea5d..416f348174ca 100644
--- a/scripts/coccinelle/misc/secs_to_jiffies.cocci
+++ b/scripts/coccinelle/misc/secs_to_jiffies.cocci
@@ -20,3 +20,13 @@ virtual patch
- msecs_to_jiffies(C * MSEC_PER_SEC)
+ secs_to_jiffies(C)
+
+@depends on patch@ expression E; @@
+
+- msecs_to_jiffies(E * 1000)
++ secs_to_jiffies(E)
+
+@depends on patch@ expression E; @@
+
+- msecs_to_jiffies(E * MSEC_PER_SEC)
++ secs_to_jiffies(E)
diff --git a/scripts/extract-fwblobs b/scripts/extract-fwblobs
new file mode 100755
index 000000000000..53729124e5a0
--- /dev/null
+++ b/scripts/extract-fwblobs
@@ -0,0 +1,30 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# -----------------------------------------------------------------------------
+# Extracts the vmlinux built-in firmware blobs - requires a non-stripped image
+# -----------------------------------------------------------------------------
+
+if [ -z "$1" ]; then
+ echo "Must provide a non-stripped vmlinux as argument"
+ exit 1
+fi
+
+read -r RD_ADDR_HEX RD_OFF_HEX <<< "$( readelf -SW "$1" |\
+grep -w rodata | awk '{print "0x"$5" 0x"$6}' )"
+
+FW_SYMS="$(readelf -sW "$1" |\
+awk -n '/fw_end/ { end=$2 ; print name " 0x" start " 0x" end; } { start=$2; name=$8; }')"
+
+while IFS= read -r entry; do
+ read -r FW_NAME FW_ADDR_ST_HEX FW_ADDR_END_HEX <<< "$entry"
+
+ # Notice kernel prepends _fw_ and appends _bin to the FW name
+ # in rodata; hence we hereby filter that out.
+ FW_NAME=${FW_NAME:4:-4}
+
+ FW_OFFSET="$(printf "%d" $((FW_ADDR_ST_HEX - RD_ADDR_HEX + RD_OFF_HEX)))"
+ FW_SIZE="$(printf "%d" $((FW_ADDR_END_HEX - FW_ADDR_ST_HEX)))"
+
+ dd if="$1" of="./${FW_NAME}" bs="${FW_SIZE}" count=1 iflag=skip_bytes skip="${FW_OFFSET}"
+done <<< "${FW_SYMS}"
diff --git a/scripts/gdb/linux/cpus.py b/scripts/gdb/linux/cpus.py
index 8f7c4fb78c2c..f506965ea759 100644
--- a/scripts/gdb/linux/cpus.py
+++ b/scripts/gdb/linux/cpus.py
@@ -46,7 +46,7 @@ def per_cpu(var_ptr, cpu):
# !CONFIG_SMP case
offset = 0
pointer = var_ptr.cast(utils.get_long_type()) + offset
- return pointer.cast(var_ptr.type).dereference()
+ return pointer.cast(var_ptr.type)
cpu_mask = {}
@@ -149,11 +149,29 @@ Note that VAR has to be quoted as string."""
super(PerCpu, self).__init__("lx_per_cpu")
def invoke(self, var, cpu=-1):
- return per_cpu(var.address, cpu)
+ return per_cpu(var.address, cpu).dereference()
PerCpu()
+
+class PerCpuPtr(gdb.Function):
+ """Return per-cpu pointer.
+
+$lx_per_cpu_ptr("VAR"[, CPU]): Return the per-cpu pointer called VAR for the
+given CPU number. If CPU is omitted, the CPU of the current context is used.
+Note that VAR has to be quoted as string."""
+
+ def __init__(self):
+ super(PerCpuPtr, self).__init__("lx_per_cpu_ptr")
+
+ def invoke(self, var, cpu=-1):
+ return per_cpu(var, cpu)
+
+
+PerCpuPtr()
+
+
def get_current_task(cpu):
task_ptr_type = task_type.get_type().pointer()
diff --git a/scripts/gdb/linux/symbols.py b/scripts/gdb/linux/symbols.py
index f6c1b063775a..b255177301e9 100644
--- a/scripts/gdb/linux/symbols.py
+++ b/scripts/gdb/linux/symbols.py
@@ -14,7 +14,9 @@
import gdb
import os
import re
+import struct
+from itertools import count
from linux import modules, utils, constants
@@ -53,6 +55,29 @@ if hasattr(gdb, 'Breakpoint'):
return False
+def get_vmcore_s390():
+ with utils.qemu_phy_mem_mode():
+ vmcore_info = 0x0e0c
+ paddr_vmcoreinfo_note = gdb.parse_and_eval("*(unsigned long long *)" +
+ hex(vmcore_info))
+ inferior = gdb.selected_inferior()
+ elf_note = inferior.read_memory(paddr_vmcoreinfo_note, 12)
+ n_namesz, n_descsz, n_type = struct.unpack(">III", elf_note)
+ desc_paddr = paddr_vmcoreinfo_note + len(elf_note) + n_namesz + 1
+ return gdb.parse_and_eval("(char *)" + hex(desc_paddr)).string()
+
+
+def get_kerneloffset():
+ if utils.is_target_arch('s390'):
+ try:
+ vmcore_str = get_vmcore_s390()
+ except gdb.error as e:
+ gdb.write("{}\n".format(e))
+ return None
+ return utils.parse_vmcore(vmcore_str).kerneloffset
+ return None
+
+
class LxSymbols(gdb.Command):
"""(Re-)load symbols of Linux kernel and currently loaded modules.
@@ -95,10 +120,14 @@ lx-symbols command."""
except gdb.error:
return str(module_addr)
- attrs = sect_attrs['attrs']
- section_name_to_address = {
- attrs[n]['battr']['attr']['name'].string(): attrs[n]['address']
- for n in range(int(sect_attrs['nsections']))}
+ section_name_to_address = {}
+ for i in count():
+ # this is a NULL terminated array
+ if sect_attrs['grp']['bin_attrs'][i] == 0x0:
+ break
+
+ attr = sect_attrs['grp']['bin_attrs'][i].dereference()
+ section_name_to_address[attr['attr']['name'].string()] = attr['private']
textaddr = section_name_to_address.get(".text", module_addr)
args = []
@@ -155,7 +184,12 @@ lx-symbols command."""
obj.filename.endswith('vmlinux.debug')):
orig_vmlinux = obj.filename
gdb.execute("symbol-file", to_string=True)
- gdb.execute("symbol-file {0}".format(orig_vmlinux))
+ kerneloffset = get_kerneloffset()
+ if kerneloffset is None:
+ offset_arg = ""
+ else:
+ offset_arg = " -o " + hex(kerneloffset)
+ gdb.execute("symbol-file {0}{1}".format(orig_vmlinux, offset_arg))
self.loaded_modules = []
module_list = modules.module_list()
diff --git a/scripts/gdb/linux/utils.py b/scripts/gdb/linux/utils.py
index 245ab297ea84..03ebdccf5f69 100644
--- a/scripts/gdb/linux/utils.py
+++ b/scripts/gdb/linux/utils.py
@@ -11,6 +11,11 @@
# This work is licensed under the terms of the GNU GPL version 2.
#
+import contextlib
+import dataclasses
+import re
+import typing
+
import gdb
@@ -216,3 +221,33 @@ def gdb_eval_or_none(expresssion):
return gdb.parse_and_eval(expresssion)
except gdb.error:
return None
+
+
+@contextlib.contextmanager
+def qemu_phy_mem_mode():
+ connection = gdb.selected_inferior().connection
+ orig = connection.send_packet("qqemu.PhyMemMode")
+ if orig not in b"01":
+ raise gdb.error("Unexpected qemu.PhyMemMode")
+ orig = orig.decode()
+ if connection.send_packet("Qqemu.PhyMemMode:1") != b"OK":
+ raise gdb.error("Failed to set qemu.PhyMemMode")
+ try:
+ yield
+ finally:
+ if connection.send_packet("Qqemu.PhyMemMode:" + orig) != b"OK":
+ raise gdb.error("Failed to restore qemu.PhyMemMode")
+
+
+@dataclasses.dataclass
+class VmCore:
+ kerneloffset: typing.Optional[int]
+
+
+def parse_vmcore(s):
+ match = re.search(r"KERNELOFFSET=([0-9a-f]+)", s)
+ if match is None:
+ kerneloffset = None
+ else:
+ kerneloffset = int(match.group(1), 16)
+ return VmCore(kerneloffset=kerneloffset)
diff --git a/scripts/generate_rust_analyzer.py b/scripts/generate_rust_analyzer.py
index adae71544cbd..cd41bc906fbd 100755
--- a/scripts/generate_rust_analyzer.py
+++ b/scripts/generate_rust_analyzer.py
@@ -97,6 +97,21 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs):
["core", "compiler_builtins"],
)
+ append_crate(
+ "pin_init_internal",
+ srctree / "rust" / "pin-init" / "internal" / "src" / "lib.rs",
+ [],
+ cfg=["kernel"],
+ is_proc_macro=True,
+ )
+
+ append_crate(
+ "pin_init",
+ srctree / "rust" / "pin-init" / "src" / "lib.rs",
+ ["core", "pin_init_internal", "macros"],
+ cfg=["kernel"],
+ )
+
def append_crate_with_generated(
display_name,
deps,
@@ -118,7 +133,7 @@ def generate_crates(srctree, objtree, sysroot_src, external_src, cfgs):
append_crate_with_generated("bindings", ["core"])
append_crate_with_generated("uapi", ["core"])
- append_crate_with_generated("kernel", ["core", "macros", "build_error", "bindings", "uapi"])
+ append_crate_with_generated("kernel", ["core", "macros", "build_error", "pin_init", "bindings", "uapi"])
def is_root_crate(build_file, target):
try:
diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 5ac02e198737..4414194bedcf 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -50,6 +50,7 @@ my $output_multiline = 1;
my $output_separator = ", ";
my $output_roles = 0;
my $output_rolestats = 1;
+my $output_substatus = undef;
my $output_section_maxlen = 50;
my $scm = 0;
my $tree = 1;
@@ -269,6 +270,7 @@ if (!GetOptions(
'separator=s' => \$output_separator,
'subsystem!' => \$subsystem,
'status!' => \$status,
+ 'substatus!' => \$output_substatus,
'scm!' => \$scm,
'tree!' => \$tree,
'web!' => \$web,
@@ -314,6 +316,10 @@ $output_multiline = 0 if ($output_separator ne ", ");
$output_rolestats = 1 if ($interactive);
$output_roles = 1 if ($output_rolestats);
+if (!defined $output_substatus) {
+ $output_substatus = $email && $output_roles && -t STDOUT;
+}
+
if ($sections || $letters ne "") {
$sections = 1;
$email = 0;
@@ -637,6 +643,7 @@ my @web = ();
my @bug = ();
my @subsystem = ();
my @status = ();
+my @substatus = ();
my %deduplicate_name_hash = ();
my %deduplicate_address_hash = ();
@@ -651,6 +658,11 @@ if ($scm) {
output(@scm);
}
+if ($output_substatus) {
+ @substatus = uniq(@substatus);
+ output(@substatus);
+}
+
if ($status) {
@status = uniq(@status);
output(@status);
@@ -859,6 +871,7 @@ sub get_maintainers {
@bug = ();
@subsystem = ();
@status = ();
+ @substatus = ();
%deduplicate_name_hash = ();
%deduplicate_address_hash = ();
if ($email_git_all_signature_types) {
@@ -1071,8 +1084,9 @@ MAINTAINER field selection options:
--moderated => include moderated lists(s) if any (default: true)
--s => include subscriber only list(s) if any (default: false)
--remove-duplicates => minimize duplicate email names/addresses
- --roles => show roles (status:subsystem, git-signer, list, etc...)
+ --roles => show roles (role:subsystem, git-signer, list, etc...)
--rolestats => show roles and statistics (commits/total_commits, %)
+ --substatus => show subsystem status if not Maintained (default: match --roles when output is tty)"
--file-emails => add email addresses found in -f file (default: 0 (off))
--fixes => for patches, add signatures of commits with 'Fixes: <commit>' (default: 1 (on))
--scm => print SCM tree(s) if any
@@ -1284,8 +1298,9 @@ sub get_maintainer_role {
my $start = find_starting_index($index);
my $end = find_ending_index($index);
- my $role = "unknown";
+ my $role = "maintainer";
my $subsystem = get_subsystem_name($index);
+ my $status = "unknown";
for ($i = $start + 1; $i < $end; $i++) {
my $tv = $typevalue[$i];
@@ -1293,23 +1308,13 @@ sub get_maintainer_role {
my $ptype = $1;
my $pvalue = $2;
if ($ptype eq "S") {
- $role = $pvalue;
+ $status = $pvalue;
}
}
}
- $role = lc($role);
- if ($role eq "supported") {
- $role = "supporter";
- } elsif ($role eq "maintained") {
- $role = "maintainer";
- } elsif ($role eq "odd fixes") {
- $role = "odd fixer";
- } elsif ($role eq "orphan") {
- $role = "orphan minder";
- } elsif ($role eq "obsolete") {
- $role = "obsolete minder";
- } elsif ($role eq "buried alive in reporters") {
+ $status = lc($status);
+ if ($status eq "buried alive in reporters") {
$role = "chief penguin";
}
@@ -1335,7 +1340,9 @@ sub add_categories {
my $start = find_starting_index($index);
my $end = find_ending_index($index);
- push(@subsystem, $typevalue[$start]);
+ my $subsystem = $typevalue[$start];
+ push(@subsystem, $subsystem);
+ my $status = "Unknown";
for ($i = $start + 1; $i < $end; $i++) {
my $tv = $typevalue[$i];
@@ -1386,8 +1393,8 @@ sub add_categories {
}
} elsif ($ptype eq "R") {
if ($email_reviewer) {
- my $subsystem = get_subsystem_name($i);
- push_email_addresses($pvalue, "reviewer:$subsystem" . $suffix);
+ my $subs = get_subsystem_name($i);
+ push_email_addresses($pvalue, "reviewer:$subs" . $suffix);
}
} elsif ($ptype eq "T") {
push(@scm, $pvalue . $suffix);
@@ -1397,9 +1404,14 @@ sub add_categories {
push(@bug, $pvalue . $suffix);
} elsif ($ptype eq "S") {
push(@status, $pvalue . $suffix);
+ $status = $pvalue;
}
}
}
+
+ if ($subsystem ne "THE REST" and $status ne "Maintained") {
+ push(@substatus, $subsystem . " status: " . $status . $suffix)
+ }
}
sub email_inuse {
@@ -1903,6 +1915,7 @@ EOT
$done = 1;
$output_rolestats = 0;
$output_roles = 0;
+ $output_substatus = 0;
last;
} elsif ($nr =~ /^\d+$/ && $nr > 0 && $nr <= $count) {
$selected{$nr - 1} = !$selected{$nr - 1};
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index 67e66333bd2a..94c78244a2b0 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -173,12 +173,14 @@ mksysmap()
sorttable()
{
- ${objtree}/scripts/sorttable ${1}
+ ${NM} -S ${1} > .tmp_vmlinux.nm-sort
+ ${objtree}/scripts/sorttable -s .tmp_vmlinux.nm-sort ${1}
}
cleanup()
{
rm -f .btf.*
+ rm -f .tmp_vmlinux.nm-sort
rm -f System.map
rm -f vmlinux
rm -f vmlinux.map
diff --git a/scripts/make_fit.py b/scripts/make_fit.py
index 4a1bb2f55861..1683e5ec6e67 100755
--- a/scripts/make_fit.py
+++ b/scripts/make_fit.py
@@ -279,7 +279,11 @@ def build_fit(args):
if os.path.splitext(fname)[1] != '.dtb':
continue
- (model, compat, files) = process_dtb(fname, args)
+ try:
+ (model, compat, files) = process_dtb(fname, args)
+ except Exception as e:
+ sys.stderr.write(f"Error processing {fname}:\n")
+ raise e
for fn in files:
if fn not in fdts:
diff --git a/scripts/rustdoc_test_gen.rs b/scripts/rustdoc_test_gen.rs
index 76aaa8329413..ec8d70ac888b 100644
--- a/scripts/rustdoc_test_gen.rs
+++ b/scripts/rustdoc_test_gen.rs
@@ -87,8 +87,8 @@ fn find_real_path<'a>(srctree: &Path, valid_paths: &'a mut Vec<PathBuf>, file: &
assert!(
valid_paths.len() > 0,
- "No path candidates found. This is likely a bug in the build system, or some files went \
- away while compiling."
+ "No path candidates found for `{file}`. This is likely a bug in the build system, or some \
+ files went away while compiling."
);
if valid_paths.len() > 1 {
@@ -97,8 +97,8 @@ fn find_real_path<'a>(srctree: &Path, valid_paths: &'a mut Vec<PathBuf>, file: &
eprintln!(" {path:?}");
}
panic!(
- "Several path candidates found, please resolve the ambiguity by renaming a file or \
- folder."
+ "Several path candidates found for `{file}`, please resolve the ambiguity by renaming \
+ a file or folder."
);
}
diff --git a/scripts/sorttable.c b/scripts/sorttable.c
index 9f41575afd7a..7b4b3714b1af 100644
--- a/scripts/sorttable.c
+++ b/scripts/sorttable.c
@@ -28,6 +28,7 @@
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
+#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
@@ -79,10 +80,16 @@ typedef union {
Elf64_Sym e64;
} Elf_Sym;
+typedef union {
+ Elf32_Rela e32;
+ Elf64_Rela e64;
+} Elf_Rela;
+
static uint32_t (*r)(const uint32_t *);
static uint16_t (*r2)(const uint16_t *);
static uint64_t (*r8)(const uint64_t *);
static void (*w)(uint32_t, uint32_t *);
+static void (*w8)(uint64_t, uint64_t *);
typedef void (*table_sort_t)(char *, int);
static struct elf_funcs {
@@ -102,6 +109,10 @@ static struct elf_funcs {
uint32_t (*sym_name)(Elf_Sym *sym);
uint64_t (*sym_value)(Elf_Sym *sym);
uint16_t (*sym_shndx)(Elf_Sym *sym);
+ uint64_t (*rela_offset)(Elf_Rela *rela);
+ uint64_t (*rela_info)(Elf_Rela *rela);
+ uint64_t (*rela_addend)(Elf_Rela *rela);
+ void (*rela_write_addend)(Elf_Rela *rela, uint64_t val);
} e;
static uint64_t ehdr64_shoff(Elf_Ehdr *ehdr)
@@ -262,6 +273,38 @@ SYM_ADDR(value)
SYM_WORD(name)
SYM_HALF(shndx)
+#define __maybe_unused __attribute__((__unused__))
+
+#define RELA_ADDR(fn_name) \
+static uint64_t rela64_##fn_name(Elf_Rela *rela) \
+{ \
+ return r8((uint64_t *)&rela->e64.r_##fn_name); \
+} \
+ \
+static uint64_t rela32_##fn_name(Elf_Rela *rela) \
+{ \
+ return r((uint32_t *)&rela->e32.r_##fn_name); \
+} \
+ \
+static uint64_t __maybe_unused rela_##fn_name(Elf_Rela *rela) \
+{ \
+ return e.rela_##fn_name(rela); \
+}
+
+RELA_ADDR(offset)
+RELA_ADDR(info)
+RELA_ADDR(addend)
+
+static void rela64_write_addend(Elf_Rela *rela, uint64_t val)
+{
+ w8(val, (uint64_t *)&rela->e64.r_addend);
+}
+
+static void rela32_write_addend(Elf_Rela *rela, uint64_t val)
+{
+ w(val, (uint32_t *)&rela->e32.r_addend);
+}
+
/*
* Get the whole file as a programming convenience in order to avoid
* malloc+lseek+read+free of many pieces. If successful, then mmap
@@ -341,6 +384,16 @@ static void wle(uint32_t val, uint32_t *x)
put_unaligned_le32(val, x);
}
+static void w8be(uint64_t val, uint64_t *x)
+{
+ put_unaligned_be64(val, x);
+}
+
+static void w8le(uint64_t val, uint64_t *x)
+{
+ put_unaligned_le64(val, x);
+}
+
/*
* Move reserved section indices SHN_LORESERVE..SHN_HIRESERVE out of
* the way to -256..-1, to avoid conflicting with real section
@@ -398,13 +451,12 @@ static inline void *get_index(void *start, int entsize, int index)
static int extable_ent_size;
static int long_size;
+#define ERRSTR_MAXSZ 256
#ifdef UNWINDER_ORC_ENABLED
/* ORC unwinder only support X86_64 */
#include <asm/orc_types.h>
-#define ERRSTR_MAXSZ 256
-
static char g_err[ERRSTR_MAXSZ];
static int *g_orc_ip_table;
static struct orc_entry *g_orc_table;
@@ -499,7 +551,136 @@ static void *sort_orctable(void *arg)
#endif
#ifdef MCOUNT_SORT_ENABLED
+
+static int compare_values_64(const void *a, const void *b)
+{
+ uint64_t av = *(uint64_t *)a;
+ uint64_t bv = *(uint64_t *)b;
+
+ if (av < bv)
+ return -1;
+ return av > bv;
+}
+
+static int compare_values_32(const void *a, const void *b)
+{
+ uint32_t av = *(uint32_t *)a;
+ uint32_t bv = *(uint32_t *)b;
+
+ if (av < bv)
+ return -1;
+ return av > bv;
+}
+
+static int (*compare_values)(const void *a, const void *b);
+
+/* Only used for sorting mcount table */
+static void rela_write_addend(Elf_Rela *rela, uint64_t val)
+{
+ e.rela_write_addend(rela, val);
+}
+
+struct func_info {
+ uint64_t addr;
+ uint64_t size;
+};
+
+/* List of functions created by: nm -S vmlinux */
+static struct func_info *function_list;
+static int function_list_size;
+
+/* Allocate functions in 1k blocks */
+#define FUNC_BLK_SIZE 1024
+#define FUNC_BLK_MASK (FUNC_BLK_SIZE - 1)
+
+static int add_field(uint64_t addr, uint64_t size)
+{
+ struct func_info *fi;
+ int fsize = function_list_size;
+
+ if (!(fsize & FUNC_BLK_MASK)) {
+ fsize += FUNC_BLK_SIZE;
+ fi = realloc(function_list, fsize * sizeof(struct func_info));
+ if (!fi)
+ return -1;
+ function_list = fi;
+ }
+ fi = &function_list[function_list_size++];
+ fi->addr = addr;
+ fi->size = size;
+ return 0;
+}
+
+/* Used for when mcount/fentry is before the function entry */
+static int before_func;
+
+/* Only return match if the address lies inside the function size */
+static int cmp_func_addr(const void *K, const void *A)
+{
+ uint64_t key = *(const uint64_t *)K;
+ const struct func_info *a = A;
+
+ if (key + before_func < a->addr)
+ return -1;
+ return key >= a->addr + a->size;
+}
+
+/* Find the function in function list that is bounded by the function size */
+static int find_func(uint64_t key)
+{
+ return bsearch(&key, function_list, function_list_size,
+ sizeof(struct func_info), cmp_func_addr) != NULL;
+}
+
+static int cmp_funcs(const void *A, const void *B)
+{
+ const struct func_info *a = A;
+ const struct func_info *b = B;
+
+ if (a->addr < b->addr)
+ return -1;
+ return a->addr > b->addr;
+}
+
+static int parse_symbols(const char *fname)
+{
+ FILE *fp;
+ char addr_str[20]; /* Only need 17, but round up to next int size */
+ char size_str[20];
+ char type;
+
+ fp = fopen(fname, "r");
+ if (!fp) {
+ perror(fname);
+ return -1;
+ }
+
+ while (fscanf(fp, "%16s %16s %c %*s\n", addr_str, size_str, &type) == 3) {
+ uint64_t addr;
+ uint64_t size;
+
+ /* Only care about functions */
+ if (type != 't' && type != 'T' && type != 'W')
+ continue;
+
+ addr = strtoull(addr_str, NULL, 16);
+ size = strtoull(size_str, NULL, 16);
+ if (add_field(addr, size) < 0)
+ return -1;
+ }
+ fclose(fp);
+
+ qsort(function_list, function_list_size, sizeof(struct func_info), cmp_funcs);
+
+ return 0;
+}
+
static pthread_t mcount_sort_thread;
+static bool sort_reloc;
+
+static long rela_type;
+
+static char m_err[ERRSTR_MAXSZ];
struct elf_mcount_loc {
Elf_Ehdr *ehdr;
@@ -508,17 +689,197 @@ struct elf_mcount_loc {
uint64_t stop_mcount_loc;
};
+/* Fill the array with the content of the relocs */
+static int fill_relocs(void *ptr, uint64_t size, Elf_Ehdr *ehdr, uint64_t start_loc)
+{
+ Elf_Shdr *shdr_start;
+ Elf_Rela *rel;
+ unsigned int shnum;
+ unsigned int count = 0;
+ int shentsize;
+ void *array_end = ptr + size;
+
+ shdr_start = (Elf_Shdr *)((char *)ehdr + ehdr_shoff(ehdr));
+ shentsize = ehdr_shentsize(ehdr);
+
+ shnum = ehdr_shnum(ehdr);
+ if (shnum == SHN_UNDEF)
+ shnum = shdr_size(shdr_start);
+
+ for (int i = 0; i < shnum; i++) {
+ Elf_Shdr *shdr = get_index(shdr_start, shentsize, i);
+ void *end;
+
+ if (shdr_type(shdr) != SHT_RELA)
+ continue;
+
+ rel = (void *)ehdr + shdr_offset(shdr);
+ end = (void *)rel + shdr_size(shdr);
+
+ for (; (void *)rel < end; rel = (void *)rel + shdr_entsize(shdr)) {
+ uint64_t offset = rela_offset(rel);
+
+ if (offset >= start_loc && offset < start_loc + size) {
+ if (ptr + long_size > array_end) {
+ snprintf(m_err, ERRSTR_MAXSZ,
+ "Too many relocations");
+ return -1;
+ }
+
+ /* Make sure this has the correct type */
+ if (rela_info(rel) != rela_type) {
+ snprintf(m_err, ERRSTR_MAXSZ,
+ "rela has type %lx but expected %lx\n",
+ (long)rela_info(rel), rela_type);
+ return -1;
+ }
+
+ if (long_size == 4)
+ *(uint32_t *)ptr = rela_addend(rel);
+ else
+ *(uint64_t *)ptr = rela_addend(rel);
+ ptr += long_size;
+ count++;
+ }
+ }
+ }
+ return count;
+}
+
+/* Put the sorted vals back into the relocation elements */
+static void replace_relocs(void *ptr, uint64_t size, Elf_Ehdr *ehdr, uint64_t start_loc)
+{
+ Elf_Shdr *shdr_start;
+ Elf_Rela *rel;
+ unsigned int shnum;
+ int shentsize;
+
+ shdr_start = (Elf_Shdr *)((char *)ehdr + ehdr_shoff(ehdr));
+ shentsize = ehdr_shentsize(ehdr);
+
+ shnum = ehdr_shnum(ehdr);
+ if (shnum == SHN_UNDEF)
+ shnum = shdr_size(shdr_start);
+
+ for (int i = 0; i < shnum; i++) {
+ Elf_Shdr *shdr = get_index(shdr_start, shentsize, i);
+ void *end;
+
+ if (shdr_type(shdr) != SHT_RELA)
+ continue;
+
+ rel = (void *)ehdr + shdr_offset(shdr);
+ end = (void *)rel + shdr_size(shdr);
+
+ for (; (void *)rel < end; rel = (void *)rel + shdr_entsize(shdr)) {
+ uint64_t offset = rela_offset(rel);
+
+ if (offset >= start_loc && offset < start_loc + size) {
+ if (long_size == 4)
+ rela_write_addend(rel, *(uint32_t *)ptr);
+ else
+ rela_write_addend(rel, *(uint64_t *)ptr);
+ ptr += long_size;
+ }
+ }
+ }
+}
+
+static int fill_addrs(void *ptr, uint64_t size, void *addrs)
+{
+ void *end = ptr + size;
+ int count = 0;
+
+ for (; ptr < end; ptr += long_size, addrs += long_size, count++) {
+ if (long_size == 4)
+ *(uint32_t *)ptr = r(addrs);
+ else
+ *(uint64_t *)ptr = r8(addrs);
+ }
+ return count;
+}
+
+static void replace_addrs(void *ptr, uint64_t size, void *addrs)
+{
+ void *end = ptr + size;
+
+ for (; ptr < end; ptr += long_size, addrs += long_size) {
+ if (long_size == 4)
+ w(*(uint32_t *)ptr, addrs);
+ else
+ w8(*(uint64_t *)ptr, addrs);
+ }
+}
+
/* Sort the addresses stored between __start_mcount_loc to __stop_mcount_loc in vmlinux */
static void *sort_mcount_loc(void *arg)
{
struct elf_mcount_loc *emloc = (struct elf_mcount_loc *)arg;
uint64_t offset = emloc->start_mcount_loc - shdr_addr(emloc->init_data_sec)
+ shdr_offset(emloc->init_data_sec);
- uint64_t count = emloc->stop_mcount_loc - emloc->start_mcount_loc;
+ uint64_t size = emloc->stop_mcount_loc - emloc->start_mcount_loc;
unsigned char *start_loc = (void *)emloc->ehdr + offset;
+ Elf_Ehdr *ehdr = emloc->ehdr;
+ void *e_msg = NULL;
+ void *vals;
+ int count;
+
+ vals = malloc(long_size * size);
+ if (!vals) {
+ snprintf(m_err, ERRSTR_MAXSZ, "Failed to allocate sort array");
+ pthread_exit(m_err);
+ }
+
+ if (sort_reloc) {
+ count = fill_relocs(vals, size, ehdr, emloc->start_mcount_loc);
+ /* gcc may use relocs to save the addresses, but clang does not. */
+ if (!count) {
+ count = fill_addrs(vals, size, start_loc);
+ sort_reloc = 0;
+ }
+ } else
+ count = fill_addrs(vals, size, start_loc);
- qsort(start_loc, count/long_size, long_size, compare_extable);
- return NULL;
+ if (count < 0) {
+ e_msg = m_err;
+ goto out;
+ }
+
+ if (count != size / long_size) {
+ snprintf(m_err, ERRSTR_MAXSZ, "Expected %u mcount elements but found %u\n",
+ (int)(size / long_size), count);
+ e_msg = m_err;
+ goto out;
+ }
+
+ /* zero out any locations not found by function list */
+ if (function_list_size) {
+ for (void *ptr = vals; ptr < vals + size; ptr += long_size) {
+ uint64_t key;
+
+ key = long_size == 4 ? r((uint32_t *)ptr) : r8((uint64_t *)ptr);
+ if (!find_func(key)) {
+ if (long_size == 4)
+ *(uint32_t *)ptr = 0;
+ else
+ *(uint64_t *)ptr = 0;
+ }
+ }
+ }
+
+ compare_values = long_size == 4 ? compare_values_32 : compare_values_64;
+
+ qsort(vals, count, long_size, compare_values);
+
+ if (sort_reloc)
+ replace_relocs(vals, size, ehdr, emloc->start_mcount_loc);
+ else
+ replace_addrs(vals, size, start_loc);
+
+out:
+ free(vals);
+
+ pthread_exit(e_msg);
}
/* Get the address of __start_mcount_loc and __stop_mcount_loc in System.map */
@@ -555,6 +916,8 @@ static void get_mcount_loc(struct elf_mcount_loc *emloc, Elf_Shdr *symtab_sec,
return;
}
}
+#else /* MCOUNT_SORT_ENABLED */
+static inline int parse_symbols(const char *fname) { return 0; }
#endif
static int do_sort(Elf_Ehdr *ehdr,
@@ -866,12 +1229,14 @@ static int do_file(char const *const fname, void *addr)
r2 = r2le;
r8 = r8le;
w = wle;
+ w8 = w8le;
break;
case ELFDATA2MSB:
r = rbe;
r2 = r2be;
r8 = r8be;
w = wbe;
+ w8 = w8be;
break;
default:
fprintf(stderr, "unrecognized ELF data encoding %d: %s\n",
@@ -887,8 +1252,15 @@ static int do_file(char const *const fname, void *addr)
}
switch (r2(&ehdr->e32.e_machine)) {
- case EM_386:
case EM_AARCH64:
+#ifdef MCOUNT_SORT_ENABLED
+ sort_reloc = true;
+ rela_type = 0x403;
+ /* arm64 uses patchable function entry placing before function */
+ before_func = 8;
+#endif
+ /* fallthrough */
+ case EM_386:
case EM_LOONGARCH:
case EM_RISCV:
case EM_S390:
@@ -932,6 +1304,10 @@ static int do_file(char const *const fname, void *addr)
.sym_name = sym32_name,
.sym_value = sym32_value,
.sym_shndx = sym32_shndx,
+ .rela_offset = rela32_offset,
+ .rela_info = rela32_info,
+ .rela_addend = rela32_addend,
+ .rela_write_addend = rela32_write_addend,
};
e = efuncs;
@@ -965,6 +1341,10 @@ static int do_file(char const *const fname, void *addr)
.sym_name = sym64_name,
.sym_value = sym64_value,
.sym_shndx = sym64_shndx,
+ .rela_offset = rela64_offset,
+ .rela_info = rela64_info,
+ .rela_addend = rela64_addend,
+ .rela_write_addend = rela64_write_addend,
};
e = efuncs;
@@ -995,14 +1375,29 @@ int main(int argc, char *argv[])
int i, n_error = 0; /* gcc-4.3.0 false positive complaint */
size_t size = 0;
void *addr = NULL;
+ int c;
+
+ while ((c = getopt(argc, argv, "s:")) >= 0) {
+ switch (c) {
+ case 's':
+ if (parse_symbols(optarg) < 0) {
+ fprintf(stderr, "Could not parse %s\n", optarg);
+ return -1;
+ }
+ break;
+ default:
+ fprintf(stderr, "usage: sorttable [-s nm-file] vmlinux...\n");
+ return 0;
+ }
+ }
- if (argc < 2) {
+ if ((argc - optind) < 1) {
fprintf(stderr, "usage: sorttable vmlinux...\n");
return 0;
}
/* Process each file in turn, allowing deep failure. */
- for (i = 1; i < argc; i++) {
+ for (i = optind; i < argc; i++) {
addr = mmap_file(argv[i], &size);
if (!addr) {
++n_error;
diff --git a/scripts/tags.sh b/scripts/tags.sh
index 45eaf35f5bff..98680e9cd7be 100755
--- a/scripts/tags.sh
+++ b/scripts/tags.sh
@@ -146,6 +146,7 @@ dogtags()
# a ^[^#] is prepended by setup_regex unless an anchor is already present
regex_asm=(
'/^\(ENTRY\|_GLOBAL\)([[:space:]]*\([[:alnum:]_\\]*\)).*/\2/'
+ '/^SYM_[[:alnum:]_]*START[[:alnum:]_]*([[:space:]]*\([[:alnum:]_\\]*\)).*/\1/'
)
regex_c=(
'/^SYSCALL_DEFINE[0-9]([[:space:]]*\([[:alnum:]_]*\).*/sys_\1/'
diff --git a/scripts/tracing/draw_functrace.py b/scripts/tracing/draw_functrace.py
deleted file mode 100755
index 42fa87300941..000000000000
--- a/scripts/tracing/draw_functrace.py
+++ /dev/null
@@ -1,129 +0,0 @@
-#!/usr/bin/env python
-# SPDX-License-Identifier: GPL-2.0-only
-
-"""
-Copyright 2008 (c) Frederic Weisbecker <fweisbec@gmail.com>
-
-This script parses a trace provided by the function tracer in
-kernel/trace/trace_functions.c
-The resulted trace is processed into a tree to produce a more human
-view of the call stack by drawing textual but hierarchical tree of
-calls. Only the functions's names and the call time are provided.
-
-Usage:
- Be sure that you have CONFIG_FUNCTION_TRACER
- # mount -t tracefs nodev /sys/kernel/tracing
- # echo function > /sys/kernel/tracing/current_tracer
- $ cat /sys/kernel/tracing/trace_pipe > ~/raw_trace_func
- Wait some times but not too much, the script is a bit slow.
- Break the pipe (Ctrl + Z)
- $ scripts/tracing/draw_functrace.py < ~/raw_trace_func > draw_functrace
- Then you have your drawn trace in draw_functrace
-"""
-
-
-import sys, re
-
-class CallTree:
- """ This class provides a tree representation of the functions
- call stack. If a function has no parent in the kernel (interrupt,
- syscall, kernel thread...) then it is attached to a virtual parent
- called ROOT.
- """
- ROOT = None
-
- def __init__(self, func, time = None, parent = None):
- self._func = func
- self._time = time
- if parent is None:
- self._parent = CallTree.ROOT
- else:
- self._parent = parent
- self._children = []
-
- def calls(self, func, calltime):
- """ If a function calls another one, call this method to insert it
- into the tree at the appropriate place.
- @return: A reference to the newly created child node.
- """
- child = CallTree(func, calltime, self)
- self._children.append(child)
- return child
-
- def getParent(self, func):
- """ Retrieve the last parent of the current node that
- has the name given by func. If this function is not
- on a parent, then create it as new child of root
- @return: A reference to the parent.
- """
- tree = self
- while tree != CallTree.ROOT and tree._func != func:
- tree = tree._parent
- if tree == CallTree.ROOT:
- child = CallTree.ROOT.calls(func, None)
- return child
- return tree
-
- def __repr__(self):
- return self.__toString("", True)
-
- def __toString(self, branch, lastChild):
- if self._time is not None:
- s = "%s----%s (%s)\n" % (branch, self._func, self._time)
- else:
- s = "%s----%s\n" % (branch, self._func)
-
- i = 0
- if lastChild:
- branch = branch[:-1] + " "
- while i < len(self._children):
- if i != len(self._children) - 1:
- s += "%s" % self._children[i].__toString(branch +\
- " |", False)
- else:
- s += "%s" % self._children[i].__toString(branch +\
- " |", True)
- i += 1
- return s
-
-class BrokenLineException(Exception):
- """If the last line is not complete because of the pipe breakage,
- we want to stop the processing and ignore this line.
- """
- pass
-
-class CommentLineException(Exception):
- """ If the line is a comment (as in the beginning of the trace file),
- just ignore it.
- """
- pass
-
-
-def parseLine(line):
- line = line.strip()
- if line.startswith("#"):
- raise CommentLineException
- m = re.match("[^]]+?\\] +([a-z.]+) +([0-9.]+): (\\w+) <-(\\w+)", line)
- if m is None:
- raise BrokenLineException
- return (m.group(2), m.group(3), m.group(4))
-
-
-def main():
- CallTree.ROOT = CallTree("Root (Nowhere)", None, None)
- tree = CallTree.ROOT
-
- for line in sys.stdin:
- try:
- calltime, callee, caller = parseLine(line)
- except BrokenLineException:
- break
- except CommentLineException:
- continue
- tree = tree.getParent(caller)
- tree = tree.calls(callee, calltime)
-
- print(CallTree.ROOT)
-
-if __name__ == "__main__":
- main()