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glibc/include
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Adhemerval Zanella f4c142bb9f arm: Use _dl_find_object on __gnu_Unwind_Find_exidx (BZ 31405) 
Instead of __dl_iterate_phdr. On ARM dlfo_eh_frame/dlfo_eh_count
maps to PT_ARM_EXIDX vaddr start / length.

On a Neoverse N1 machine with 160 cores, the following program:

  $ cat test.c
  #include <stdlib.h>
  #include <pthread.h>
  #include <assert.h>

  enum {
    niter = 1024,
    ntimes = 128,
  };

  static void *
  tf (void *arg)
  {
    int a = (int) arg;

    for (int i = 0; i < niter; i++)
      {
        void *p[ntimes];
        for (int j = 0; j < ntimes; j++)
  	p[j] = malloc (a * 128);
        for (int j = 0; j < ntimes; j++)
  	free (p[j]);
      }

    return NULL;
  }

  int main (int argc, char *argv[])
  {
    enum { nthreads = 16 };
    pthread_t t[nthreads];

    for (int i = 0; i < nthreads; i ++)
      assert (pthread_create (&t[i], NULL, tf, (void *) i) == 0);

    for (int i = 0; i < nthreads; i++)
      {
        void *r;
        assert (pthread_join (t[i], &r) == 0);
        assert (r == NULL);
      }

    return 0;
  }
  $ arm-linux-gnueabihf-gcc -fsanitize=address test.c -o test

Improves from ~15s to 0.5s.

Checked on arm-linux-gnueabihf.
2024-02-23 08:50:00 -03:00
..
arpa Fix all the remaining misspellings -- BZ 25337 2023-06-02 01:39:48 +00:00
bits Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
gnu Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
net
netinet
programs Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
protocols
rpc
rpcsvc
sys Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
aio.h Linux: Move aio_suspend, aio_suspend64, __aio_suspend_time64 to libc 2021-06-25 11:55:27 +02:00
aliases.h Move 'aliases' routines from 'inet' into 'nss' 2023-10-24 12:30:59 +02:00
alloc_buffer.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
alloca.h
allocate_once.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
ar.h
argp-fmtstream.h
argp.h
argz.h
array_length.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
assert.h assert: Do not use stderr in libc-internal assert 2022-08-03 11:43:04 +02:00
atomic_wide_counter.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
atomic.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
byteswap.h
clone_internal.h posix: Add pidfd_spawn and pidfd_spawnp (BZ 30349) 2023-09-05 13:08:59 -03:00
complex.h
cpio.h
ctype.h
des.h
dirent.h
dlfcn.h arm: Use _dl_find_object on __gnu_Unwind_Find_exidx (BZ 31405) 2024-02-23 08:50:00 -03:00
dso_handle.h
elf.h
endian.h
envz.h
err.h
errno.h
error.h Mark various cold functions as __COLD 2023-05-01 19:33:21 +02:00
execinfo.h
fcntl.h
features-time64.h
features.h Refer to C23 in place of C2X in glibc 2024-02-01 11:02:01 +00:00
fenv.h
file_change_detection.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
filename.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
float.h
fmtmsg.h
fnmatch.h
fpu_control.h
fstab.h
fts.h
ftw.h
gconv.h
getopt_int.h
getopt.h
glob.h Fix extra PLT reference in libc.so due to __glob64_time64 if build with gcc 7.5 on 32bit. 2021-07-01 16:46:59 +02:00
gmp.h Apply asm redirection in gmp.h before first use 2022-11-07 10:40:21 -03:00
gnu-versions.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
grp-merge.h Remove 'grp' and merge into 'nss' and 'posix' 2023-10-24 12:30:59 +02:00
grp.h Remove 'grp' and merge into 'nss' and 'posix' 2023-10-24 12:30:59 +02:00
gshadow.h Remove 'gshadow' and merge into 'nss' 2023-10-24 12:30:59 +02:00
iconv.h
idx.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
ifaddrs.h nscd: Do not rebuild getaddrinfo (bug 30709) 2023-08-11 10:10:16 +02:00
ifreq.h
ifunc-impl-list.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
inline-hashtab.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
intprops.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
inttypes.h
langinfo.h
lastlog.h
libc-diag.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
libc-internal.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
libc-pointer-arith.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
libc-symbols.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
libgen.h
libintl.h
limits.h Refer to C23 in place of C2X in glibc 2024-02-01 11:02:01 +00:00
link.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
list_t.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
list.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
locale.h
loop_unroll.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
malloc.h Simplify __malloc_initialized 2021-07-22 18:38:04 +05:30
math-narrow-eval.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
math.h Redirect fma calls to __fma in libm 2021-09-15 22:57:35 +00:00
mcheck.h mcheck: Wean away from malloc hooks [BZ #23489] 2021-07-22 18:38:02 +05:30
memory.h
mntent.h
monetary.h
mqueue.h Linux: Move mq_send, mq_timedsend, __mq_timedsend_time64 to libc 2021-06-25 12:21:12 +02:00
netdb.h Move 'netgroup' routines from 'inet' into 'nss' 2023-10-24 12:30:59 +02:00
netgroup.h Move 'netgroup' routines from 'inet' into 'nss' 2023-10-24 12:30:59 +02:00
nl_types.h
nss_dns.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
nss_files.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
nss.h
nsswitch.h
obstack.h
plural-exp.h
poll.h
printf_buffer.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
printf.h stdio-common: Convert vfprintf and related functions to buffers 2022-12-19 18:56:54 +01:00
pthread.h Linux: Move mq_notify from librt to libc 2021-06-25 12:20:47 +02:00
pty.h login: Move libutil into libc 2021-06-30 08:43:37 +02:00
pwd.h Remove 'pwd' and merge into 'nss' 2023-10-24 12:30:59 +02:00
random-bits.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
re_comp.h
regex.h Fix regex type usage 2023-05-01 09:08:59 -04:00
regexp.h
register-atfork.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
resolv.h resolv: Add internal __res_binary_hnok function 2022-08-30 10:02:49 +02:00
rounding-mode.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
rtld-malloc.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
sched.h
scratch_buffer.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
search.h
set-freeres.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
setjmp.h chk: Add and fix hidden builtin definitions for *_chk 2023-08-03 22:46:48 +02:00
sgtty.h
shadow.h Remove 'shadow' and merge into 'nss' 2023-10-24 12:30:59 +02:00
shlib-compat.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
shm-directory.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
signal.h stdio: Remove the usage of $(fno-unit-at-a-time) for siglist.c 2022-05-13 10:54:41 -03:00
spawn.h
stab.h
stackinfo.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
stap-probe.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
stdbit.h Implement C23 <stdbit.h> 2024-01-03 12:07:14 +00:00
stdc-predef.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
stdint.h
stdio_ext.h
stdio.h Refer to C23 in place of C2X in glibc 2024-02-01 11:02:01 +00:00
stdlib.h Refer to C23 in place of C2X in glibc 2024-02-01 11:02:01 +00:00
string.h string: Add hidden builtin definition for __strcpy_chk. 2024-02-06 09:17:04 +01:00
strings.h
struct___timeb64.h
struct___timespec64.h
struct___timeval64.h
stubs-prologue.h
syscall.h
sysexits.h
syslog.h
tar.h
termios.h
tgmath.h
time.h Define in_int32_t_range to check if the 64 bit time_t syscall should be used 2022-11-17 14:35:13 -03:00
ttyent.h
uchar.h
ucontext.h
ulimit.h
unistd_ext.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
unistd.h unistd: Avoid PLT entries with _FORTIFY_SOURCE 2023-07-05 16:59:48 +02:00
utime.h
utmp.h login: Move libutil into libc 2021-06-30 08:43:37 +02:00
values.h Update copyright dates with scripts/update-copyrights 2024-01-01 10:53:40 -08:00
verify.h
wait.h
wchar.h Refer to C23 in place of C2X in glibc 2024-02-01 11:02:01 +00:00
wctype.h
wordexp.h