mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-28 13:31:13 +00:00
1e372ded4f
This patch refactor how hp-timing is used on loader code for statistics report. The HP_TIMING_AVAIL and HP_SMALL_TIMING_AVAIL are removed and HP_TIMING_INLINE is used instead to check for hp-timing avaliability. For alpha, which only defines HP_SMALL_TIMING_AVAIL, the HP_TIMING_INLINE is set iff for IS_IN(rtld). Checked on aarch64-linux-gnu, x86_64-linux-gnu, and i686-linux-gnu. I also checked the builds for all afected ABIs. * benchtests/bench-timing.h: Replace HP_TIMING_AVAIL with HP_TIMING_INLINE. * nptl/descr.h: Likewise. * elf/rtld.c (RLTD_TIMING_DECLARE, RTLD_TIMING_NOW, RTLD_TIMING_DIFF, RTLD_TIMING_ACCUM_NT, RTLD_TIMING_SET): Define. (dl_start_final_info, _dl_start_final, dl_main, print_statistics): Abstract hp-timing usage with RTLD_* macros. * sysdeps/alpha/hp-timing.h (HP_TIMING_INLINE): Define iff IS_IN(rtld). (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Remove. * sysdeps/generic/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL, HP_TIMING_NONAVAIL): Likewise. * sysdeps/ia64/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/powerpc/powerpc32/power4/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/powerpc/powerpc64/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/sparc/sparc32/sparcv9/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/sparc/sparc64/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/x86/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Likewise. * sysdeps/generic/hp-timing-common.h: Update comment with HP_TIMING_AVAIL removal.
47 lines
1.7 KiB
C
47 lines
1.7 KiB
C
/* High precision, low overhead timing functions. Alpha version.
|
|
Copyright (C) 2001-2019 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Richard Henderson <rth@redhat.com>, 2001.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _HP_TIMING_ALPHA_H
|
|
#define _HP_TIMING_ALPHA_H 1
|
|
|
|
#if IS_IN(rtld)
|
|
/* We always have the timestamp register, but it's got only a 4 second
|
|
range. Use it for ld.so profiling only. */
|
|
# define HP_TIMING_INLINE (1)
|
|
|
|
/* We use 32 bit values for the times. */
|
|
typedef unsigned int hp_timing_t;
|
|
|
|
/* The "rpcc" instruction returns a 32-bit counting half and a 32-bit
|
|
"virtual cycle counter displacement". Subtracting the two gives us
|
|
a virtual cycle count. */
|
|
# define HP_TIMING_NOW(VAR) \
|
|
do { \
|
|
unsigned long int x_; \
|
|
asm volatile ("rpcc %0" : "=r"(x_)); \
|
|
(VAR) = (int) (x_) - (int) (x_ >> 32); \
|
|
} while (0)
|
|
# include <hp-timing-common.h>
|
|
|
|
#else
|
|
# include <sysdeps/generic/hp-timing.h>
|
|
#endif /* IS_IN(rtld) */
|
|
|
|
#endif /* hp-timing.h */
|