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glibc/sysdeps/arm
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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
..
armv6
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armv6t2
string: Use builtins for ffs and ffsll
2024-02-01 09:31:33 -03:00
armv7
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be
arm: Fix softp-fp Implies (BZ #25635)
2020-03-06 09:53:24 -03:00
bits
Refer to C23 in place of C2X in glibc
2024-02-01 11:02:01 +00:00
include/bits
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le
arm: Fix softp-fp Implies (BZ #25635)
2020-03-06 09:53:24 -03:00
nofpu
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nptl
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sys
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__longjmp.S
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add_n.S
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addmul_1.S
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aeabi_assert.c
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aeabi_atexit.c
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aeabi_errno_addr.c
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aeabi_lcsts.c
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aeabi_localeconv.c
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aeabi_math.c
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aeabi_mb_cur_max.c
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aeabi_memclr.c
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aeabi_memcpy.c
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aeabi_memmove.c
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aeabi_memset.c
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aeabi_sighandlers.S
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aeabi_unwind_cpp_pr1.c
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arm-features.h
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arm-ifunc.h
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arm-mcount.S
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arm-unwind-resume.S
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atomic-machine.h
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backtrace.c
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bsd-_setjmp.S
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bsd-setjmp.S
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configure
configure: Use autoconf 2.71
2023-07-17 10:08:10 -04:00
configure.ac
grep: egrep -> grep -E, fgrep -> grep -F
2022-06-05 12:09:02 -07:00
crti.S
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crtn.S
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dl-irel.h
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dl-lookupcfg.h
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dl-machine-rel.h
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dl-machine.h
arm: Remove wrong ldr from _dl_start_user (BZ 31339)
2024-02-05 15:29:23 -03:00
dl-tls.h
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dl-tlsdesc.h
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dl-tlsdesc.S
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dl-trampoline.S
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elf-initfini.h
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fclrexcpt.c
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fedisblxcpt.c
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feenablxcpt.c
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fegetenv.c
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fegetexcept.c
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fegetmode.c
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fegetround.c
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feholdexcpt.c
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fenv_private.h
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fesetenv.c
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fesetexcept.c
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fesetmode.c
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fesetround.c
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feupdateenv.c
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fgetexcptflg.c
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find_exidx.c
arm: Use _dl_find_object on __gnu_Unwind_Find_exidx (BZ 31405)
2024-02-23 08:50:00 -03:00
fix-fp-int-convert-overflow.h
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fpu_control.h
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fraiseexcpt.c
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framestate.c
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fsetexcptflg.c
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ftestexcept.c
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gcc-compat.h
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gccframe.h
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get-rounding-mode.h
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Implies
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jmpbuf-unwind.h
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ldbl-classify-compat.h
Move LDBL_CLASSIFY_COMPAT to its own header.
2018-02-01 21:01:00 +00:00
ldsodefs.h
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libc-aeabi_read_tp.S
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libc-tls.c
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libm-test-ulps
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libm-test-ulps-name
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linkmap.h
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machine-gmon.h
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Makefile
configure: Use -Wno-ignored-attributes if compiler warns about multiple aliases
2022-11-01 09:51:06 -03:00
math-tests-trap.h
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math-use-builtins-sqrt.h
arm: Use sqrt{f} builtin
2020-06-22 11:09:50 -03:00
memcpy.S
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memmove.S
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memset.S
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pointer_guard.h
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preconfigure
configure: Use autoconf 2.71
2023-07-17 10:08:10 -04:00
preconfigure.ac
sysdeps: arm: Fix preconfigure script for ARMv8/v9 targets [BZ #29698]
2022-10-20 11:23:05 -03:00
rt-aeabi_unwind_cpp_pr1.c
…
rt-arm-unwind-resume.S
…
rtld-global-offsets.sym
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setfpucw.c
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setjmp.S
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sfp-machine.h
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sotruss-lib.c
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stackinfo.h
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stap-probe-machine.h
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start.S
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static-stubs.c
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strlen.S
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sub_n.S
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submul_1.S
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sysdep.h
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test-fpucw.c
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tlsdesc.c
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tlsdesc.sym
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tst-armtlsdescextlazy.c
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tst-armtlsdescextlazymod.c
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tst-armtlsdescextnow.c
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tst-armtlsdescextnowmod.c
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tst-armtlsdescloc.c
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tst-armtlsdesclocmod.c
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tst-audit.h
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unwind-arch.h
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unwind-dw2-fde-glibc.c
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unwind-pe.c
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unwind-resume.c
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unwind-resume.h
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unwind.h
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