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Refactor hp-timing rtld usage
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.
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ChangeLog
26
ChangeLog
@ -1,5 +1,31 @@
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2019-03-22 Adhemerval Zanella <adhemerval.zanella@linaro.org>
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* benchtests/bench-timing.h: Replace HP_TIMING_AVAIL with
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HP_TIMING_INLINE.
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* nptl/descr.h: Likewise.
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* elf/rtld.c (RLTD_TIMING_DECLARE, RTLD_TIMING_NOW, RTLD_TIMING_DIFF,
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RTLD_TIMING_ACCUM_NT, RTLD_TIMING_SET): Define.
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(dl_start_final_info, _dl_start_final, dl_main, print_statistics):
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Abstract hp-timing usage with RTLD_* macros.
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* sysdeps/alpha/hp-timing.h (HP_TIMING_INLINE): Define iff IS_IN(rtld).
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(HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL): Remove.
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* sysdeps/generic/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL,
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HP_TIMING_NONAVAIL): Likewise.
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* sysdeps/ia64/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL):
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Likewise.
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* sysdeps/powerpc/powerpc32/power4/hp-timing.h (HP_TIMING_AVAIL,
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HP_SMALL_TIMING_AVAIL): Likewise.
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* sysdeps/powerpc/powerpc64/hp-timing.h (HP_TIMING_AVAIL,
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HP_SMALL_TIMING_AVAIL): Likewise.
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* sysdeps/sparc/sparc32/sparcv9/hp-timing.h (HP_TIMING_AVAIL,
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HP_SMALL_TIMING_AVAIL): Likewise.
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* sysdeps/sparc/sparc64/hp-timing.h (HP_TIMING_AVAIL,
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HP_SMALL_TIMING_AVAIL): Likewise.
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* sysdeps/x86/hp-timing.h (HP_TIMING_AVAIL, HP_SMALL_TIMING_AVAIL):
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Likewise.
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* sysdeps/generic/hp-timing-common.h: Update comment with
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HP_TIMING_AVAIL removal.
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* include/random-bits.h: New file.
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* resolv/res_mkquery.c [HP_TIMING_AVAIL] (RANDOM_BITS,
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(__res_context_mkquery): Remove usage hp-timing usage and replace with
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@ -21,7 +21,7 @@
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#include <hp-timing.h>
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#include <stdint.h>
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#if HP_TIMING_AVAIL && !defined USE_CLOCK_GETTIME
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#if HP_TIMING_INLINE && !defined USE_CLOCK_GETTIME
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# define GL(x) _##x
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# define GLRO(x) _##x
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typedef hp_timing_t timing_t;
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281
elf/rtld.c
281
elf/rtld.c
@ -46,6 +46,49 @@
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#include <assert.h>
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/* Only enables rtld profiling for architectures which provides non generic
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hp-timing support. The generic support requires either syscall
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(clock_gettime), which will incur in extra overhead on loading time.
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Using vDSO is also an option, but it will require extra support on loader
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to setup the vDSO pointer before its usage. */
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#if HP_TIMING_INLINE
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# define RLTD_TIMING_DECLARE(var, classifier,...) \
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classifier hp_timing_t var __VA_ARGS__
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# define RTLD_TIMING_VAR(var) RLTD_TIMING_DECLARE (var, )
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# define RTLD_TIMING_SET(var, value) (var) = (value)
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# define RTLD_TIMING_REF(var) &(var)
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static inline void
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rtld_timer_start (hp_timing_t *var)
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{
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HP_TIMING_NOW (*var);
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}
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static inline void
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rtld_timer_stop (hp_timing_t *var, hp_timing_t start)
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{
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hp_timing_t stop;
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HP_TIMING_NOW (stop);
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HP_TIMING_DIFF (*var, start, stop);
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}
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static inline void
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rtld_timer_accum (hp_timing_t *sum, hp_timing_t start)
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{
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hp_timing_t stop;
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rtld_timer_stop (&stop, start);
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HP_TIMING_ACCUM_NT(*sum, stop);
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}
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#else
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# define RLTD_TIMING_DECLARE(var, classifier...)
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# define RTLD_TIMING_SET(var, value)
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# define RTLD_TIMING_VAR(var)
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# define RTLD_TIMING_REF(var) 0
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# define rtld_timer_start(var)
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# define rtld_timer_stop(var, start)
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# define rtld_timer_accum(sum, start)
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#endif
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/* Avoid PLT use for our local calls at startup. */
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extern __typeof (__mempcpy) __mempcpy attribute_hidden;
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@ -62,7 +105,7 @@ static void print_missing_version (int errcode, const char *objname,
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const char *errsting);
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/* Print the various times we collected. */
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static void print_statistics (hp_timing_t *total_timep);
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static void print_statistics (const hp_timing_t *total_timep);
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/* Add audit objects. */
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static void process_dl_audit (char *str);
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@ -303,11 +346,9 @@ static struct libname_list _dl_rtld_libname;
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static struct libname_list _dl_rtld_libname2;
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/* Variable for statistics. */
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#ifndef HP_TIMING_NONAVAIL
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static hp_timing_t relocate_time;
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static hp_timing_t load_time attribute_relro;
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static hp_timing_t start_time attribute_relro;
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#endif
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RLTD_TIMING_DECLARE (relocate_time, static);
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RLTD_TIMING_DECLARE (load_time, static, attribute_relro);
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RLTD_TIMING_DECLARE (start_time, static, attribute_relro);
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/* Additional definitions needed by TLS initialization. */
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#ifdef TLS_INIT_HELPER
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@ -335,9 +376,7 @@ static ElfW(Addr) _dl_start_final (void *arg);
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struct dl_start_final_info
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{
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struct link_map l;
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#if !defined HP_TIMING_NONAVAIL && HP_TIMING_INLINE
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hp_timing_t start_time;
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#endif
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RTLD_TIMING_VAR (start_time);
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};
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static ElfW(Addr) _dl_start_final (void *arg,
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struct dl_start_final_info *info);
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@ -371,16 +410,11 @@ _dl_start_final (void *arg, struct dl_start_final_info *info)
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{
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ElfW(Addr) start_addr;
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if (HP_SMALL_TIMING_AVAIL)
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{
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/* If it hasn't happen yet record the startup time. */
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if (! HP_TIMING_INLINE)
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HP_TIMING_NOW (start_time);
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#if !defined DONT_USE_BOOTSTRAP_MAP && !defined HP_TIMING_NONAVAIL
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else
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start_time = info->start_time;
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/* If it hasn't happen yet record the startup time. */
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rtld_timer_start (&start_time);
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#if !defined DONT_USE_BOOTSTRAP_MAP
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RTLD_TIMING_SET (start_time, info->start_time);
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#endif
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}
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/* Transfer data about ourselves to the permanent link_map structure. */
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#ifndef DONT_USE_BOOTSTRAP_MAP
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@ -412,27 +446,11 @@ _dl_start_final (void *arg, struct dl_start_final_info *info)
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entry point on the same stack we entered on. */
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start_addr = _dl_sysdep_start (arg, &dl_main);
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#ifndef HP_TIMING_NONAVAIL
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hp_timing_t rtld_total_time;
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if (HP_SMALL_TIMING_AVAIL)
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{
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hp_timing_t end_time;
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/* Get the current time. */
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HP_TIMING_NOW (end_time);
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/* Compute the difference. */
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HP_TIMING_DIFF (rtld_total_time, start_time, end_time);
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}
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#endif
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if (__glibc_unlikely (GLRO(dl_debug_mask) & DL_DEBUG_STATISTICS))
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{
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#ifndef HP_TIMING_NONAVAIL
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print_statistics (&rtld_total_time);
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#else
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print_statistics (NULL);
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#endif
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RTLD_TIMING_VAR (rtld_total_time);
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rtld_timer_stop (&rtld_total_time, start_time);
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print_statistics (RTLD_TIMING_REF(rtld_total_time));
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}
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return start_addr;
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@ -457,11 +475,10 @@ _dl_start (void *arg)
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#define RESOLVE_MAP(sym, version, flags) BOOTSTRAP_MAP
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#include "dynamic-link.h"
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if (HP_TIMING_INLINE && HP_SMALL_TIMING_AVAIL)
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#ifdef DONT_USE_BOOTSTRAP_MAP
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HP_TIMING_NOW (start_time);
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rtld_timer_start (&start_time);
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#else
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HP_TIMING_NOW (info.start_time);
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rtld_timer_start (&info.start_time);
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#endif
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/* Partly clean the `bootstrap_map' structure up. Don't use
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@ -1078,11 +1095,6 @@ dl_main (const ElfW(Phdr) *phdr,
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unsigned int i;
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bool prelinked = false;
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bool rtld_is_main = false;
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#ifndef HP_TIMING_NONAVAIL
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hp_timing_t start;
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hp_timing_t stop;
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hp_timing_t diff;
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#endif
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void *tcbp = NULL;
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GL(dl_init_static_tls) = &_dl_nothread_init_static_tls;
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@ -1258,12 +1270,11 @@ of this helper program; chances are you did not intend to run this program.\n\
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}
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else
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{
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HP_TIMING_NOW (start);
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RTLD_TIMING_VAR (start);
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rtld_timer_start (&start);
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_dl_map_object (NULL, rtld_progname, lt_executable, 0,
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__RTLD_OPENEXEC, LM_ID_BASE);
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HP_TIMING_NOW (stop);
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HP_TIMING_DIFF (load_time, start, stop);
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rtld_timer_stop (&load_time, start);
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}
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/* Now the map for the main executable is available. */
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@ -1666,20 +1677,18 @@ ERROR: '%s': cannot process note segment.\n", _dl_argv[0]);
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if (__glibc_unlikely (preloadlist != NULL))
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{
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HP_TIMING_NOW (start);
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RTLD_TIMING_VAR (start);
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rtld_timer_start (&start);
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npreloads += handle_preload_list (preloadlist, main_map, "LD_PRELOAD");
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HP_TIMING_NOW (stop);
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HP_TIMING_DIFF (diff, start, stop);
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HP_TIMING_ACCUM_NT (load_time, diff);
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rtld_timer_accum (&load_time, start);
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}
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if (__glibc_unlikely (preloadarg != NULL))
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{
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HP_TIMING_NOW (start);
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RTLD_TIMING_VAR (start);
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rtld_timer_start (&start);
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npreloads += handle_preload_list (preloadarg, main_map, "--preload");
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HP_TIMING_NOW (stop);
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HP_TIMING_DIFF (diff, start, stop);
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HP_TIMING_ACCUM_NT (load_time, diff);
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rtld_timer_accum (&load_time, start);
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}
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/* There usually is no ld.so.preload file, it should only be used
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@ -1739,7 +1748,8 @@ ERROR: '%s': cannot process note segment.\n", _dl_argv[0]);
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file[file_size - 1] = '\0';
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}
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HP_TIMING_NOW (start);
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RTLD_TIMING_VAR (start);
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rtld_timer_start (&start);
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if (file != problem)
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{
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@ -1757,9 +1767,7 @@ ERROR: '%s': cannot process note segment.\n", _dl_argv[0]);
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npreloads += do_preload (p, main_map, preload_file);
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}
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HP_TIMING_NOW (stop);
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HP_TIMING_DIFF (diff, start, stop);
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HP_TIMING_ACCUM_NT (load_time, diff);
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rtld_timer_accum (&load_time, start);
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/* We don't need the file anymore. */
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__munmap (file, file_size);
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@ -1783,11 +1791,12 @@ ERROR: '%s': cannot process note segment.\n", _dl_argv[0]);
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/* Load all the libraries specified by DT_NEEDED entries. If LD_PRELOAD
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specified some libraries to load, these are inserted before the actual
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dependencies in the executable's searchlist for symbol resolution. */
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HP_TIMING_NOW (start);
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_dl_map_object_deps (main_map, preloads, npreloads, mode == trace, 0);
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HP_TIMING_NOW (stop);
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HP_TIMING_DIFF (diff, start, stop);
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HP_TIMING_ACCUM_NT (load_time, diff);
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{
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RTLD_TIMING_VAR (start);
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rtld_timer_start (&start);
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_dl_map_object_deps (main_map, preloads, npreloads, mode == trace, 0);
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rtld_timer_accum (&load_time, start);
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}
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/* Mark all objects as being in the global scope. */
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for (i = main_map->l_searchlist.r_nlist; i > 0; )
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@ -2180,12 +2189,10 @@ ERROR: '%s': cannot process note segment.\n", _dl_argv[0]);
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if (main_map->l_info [ADDRIDX (DT_GNU_CONFLICT)] != NULL)
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{
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ElfW(Rela) *conflict, *conflictend;
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#ifndef HP_TIMING_NONAVAIL
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hp_timing_t start;
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hp_timing_t stop;
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#endif
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HP_TIMING_NOW (start);
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RTLD_TIMING_VAR (start);
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rtld_timer_start (&start);
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assert (main_map->l_info [VALIDX (DT_GNU_CONFLICTSZ)] != NULL);
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conflict = (ElfW(Rela) *)
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main_map->l_info [ADDRIDX (DT_GNU_CONFLICT)]->d_un.d_ptr;
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@ -2193,8 +2200,8 @@ ERROR: '%s': cannot process note segment.\n", _dl_argv[0]);
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((char *) conflict
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+ main_map->l_info [VALIDX (DT_GNU_CONFLICTSZ)]->d_un.d_val);
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_dl_resolve_conflicts (main_map, conflict, conflictend);
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HP_TIMING_NOW (stop);
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HP_TIMING_DIFF (relocate_time, start, stop);
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rtld_timer_stop (&relocate_time, start);
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}
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@ -2222,15 +2229,12 @@ ERROR: '%s': cannot process note segment.\n", _dl_argv[0]);
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know that because it is self-contained). */
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int consider_profiling = GLRO(dl_profile) != NULL;
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#ifndef HP_TIMING_NONAVAIL
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hp_timing_t start;
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hp_timing_t stop;
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#endif
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/* If we are profiling we also must do lazy reloaction. */
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GLRO(dl_lazy) |= consider_profiling;
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HP_TIMING_NOW (start);
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RTLD_TIMING_VAR (start);
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rtld_timer_start (&start);
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unsigned i = main_map->l_searchlist.r_nlist;
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while (i-- > 0)
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{
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@ -2257,9 +2261,7 @@ ERROR: '%s': cannot process note segment.\n", _dl_argv[0]);
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if (l->l_tls_blocksize != 0 && tls_init_tp_called)
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_dl_add_to_slotinfo (l);
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}
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HP_TIMING_NOW (stop);
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HP_TIMING_DIFF (relocate_time, start, stop);
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rtld_timer_stop (&relocate_time, start);
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/* Now enable profiling if needed. Like the previous call,
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this has to go here because the calls it makes should use the
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@ -2302,19 +2304,14 @@ ERROR: '%s': cannot process note segment.\n", _dl_argv[0]);
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re-relocation, we might call a user-supplied function
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(e.g. calloc from _dl_relocate_object) that uses TLS data. */
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#ifndef HP_TIMING_NONAVAIL
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hp_timing_t start;
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hp_timing_t stop;
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hp_timing_t add;
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#endif
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RTLD_TIMING_VAR (start);
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rtld_timer_start (&start);
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HP_TIMING_NOW (start);
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/* Mark the link map as not yet relocated again. */
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GL(dl_rtld_map).l_relocated = 0;
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_dl_relocate_object (&GL(dl_rtld_map), main_map->l_scope, 0, 0);
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HP_TIMING_NOW (stop);
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HP_TIMING_DIFF (add, start, stop);
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HP_TIMING_ACCUM_NT (relocate_time, add);
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rtld_timer_accum (&relocate_time, start);
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}
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/* Do any necessary cleanups for the startup OS interface code.
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@ -2746,46 +2743,51 @@ process_envvars (enum mode *modep)
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}
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}
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#if HP_TIMING_INLINE
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static void
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print_statistics_item (const char *title, hp_timing_t time,
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hp_timing_t total)
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{
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char cycles[HP_TIMING_PRINT_SIZE];
|
||||
HP_TIMING_PRINT (cycles, sizeof (cycles), time);
|
||||
|
||||
char relative[3 * sizeof (hp_timing_t) + 2];
|
||||
char *cp = _itoa ((1000ULL * time) / total, relative + sizeof (relative),
|
||||
10, 0);
|
||||
/* Sets the decimal point. */
|
||||
char *wp = relative;
|
||||
switch (relative + sizeof (relative) - cp)
|
||||
{
|
||||
case 3:
|
||||
*wp++ = *cp++;
|
||||
/* Fall through. */
|
||||
case 2:
|
||||
*wp++ = *cp++;
|
||||
/* Fall through. */
|
||||
case 1:
|
||||
*wp++ = '.';
|
||||
*wp++ = *cp++;
|
||||
}
|
||||
*wp = '\0';
|
||||
_dl_debug_printf ("%s: %s cycles (%s%%)\n", title, cycles, relative);
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Print the various times we collected. */
|
||||
static void
|
||||
__attribute ((noinline))
|
||||
print_statistics (hp_timing_t *rtld_total_timep)
|
||||
print_statistics (const hp_timing_t *rtld_total_timep)
|
||||
{
|
||||
#ifndef HP_TIMING_NONAVAIL
|
||||
char buf[200];
|
||||
char *cp;
|
||||
char *wp;
|
||||
|
||||
/* Total time rtld used. */
|
||||
if (HP_SMALL_TIMING_AVAIL)
|
||||
{
|
||||
HP_TIMING_PRINT (buf, sizeof (buf), *rtld_total_timep);
|
||||
_dl_debug_printf ("\nruntime linker statistics:\n"
|
||||
" total startup time in dynamic loader: %s\n", buf);
|
||||
|
||||
/* Print relocation statistics. */
|
||||
char pbuf[30];
|
||||
HP_TIMING_PRINT (buf, sizeof (buf), relocate_time);
|
||||
cp = _itoa ((1000ULL * relocate_time) / *rtld_total_timep,
|
||||
pbuf + sizeof (pbuf), 10, 0);
|
||||
wp = pbuf;
|
||||
switch (pbuf + sizeof (pbuf) - cp)
|
||||
{
|
||||
case 3:
|
||||
*wp++ = *cp++;
|
||||
/* Fall through. */
|
||||
case 2:
|
||||
*wp++ = *cp++;
|
||||
/* Fall through. */
|
||||
case 1:
|
||||
*wp++ = '.';
|
||||
*wp++ = *cp++;
|
||||
}
|
||||
*wp = '\0';
|
||||
_dl_debug_printf ("\
|
||||
time needed for relocation: %s (%s%%)\n", buf, pbuf);
|
||||
}
|
||||
#if HP_TIMING_INLINE
|
||||
{
|
||||
char cycles[HP_TIMING_PRINT_SIZE];
|
||||
HP_TIMING_PRINT (cycles, sizeof (cycles), *rtld_total_timep);
|
||||
_dl_debug_printf ("\nruntime linker statistics:\n"
|
||||
" total startup time in dynamic loader: %s cycles\n",
|
||||
cycles);
|
||||
print_statistics_item (" time needed for relocation",
|
||||
relocate_time, *rtld_total_timep);
|
||||
}
|
||||
#endif
|
||||
|
||||
unsigned long int num_relative_relocations = 0;
|
||||
@ -2826,31 +2828,8 @@ print_statistics (hp_timing_t *rtld_total_timep)
|
||||
GL(dl_num_cache_relocations),
|
||||
num_relative_relocations);
|
||||
|
||||
#ifndef HP_TIMING_NONAVAIL
|
||||
/* Time spend while loading the object and the dependencies. */
|
||||
if (HP_SMALL_TIMING_AVAIL)
|
||||
{
|
||||
char pbuf[30];
|
||||
HP_TIMING_PRINT (buf, sizeof (buf), load_time);
|
||||
cp = _itoa ((1000ULL * load_time) / *rtld_total_timep,
|
||||
pbuf + sizeof (pbuf), 10, 0);
|
||||
wp = pbuf;
|
||||
switch (pbuf + sizeof (pbuf) - cp)
|
||||
{
|
||||
case 3:
|
||||
*wp++ = *cp++;
|
||||
/* Fall through. */
|
||||
case 2:
|
||||
*wp++ = *cp++;
|
||||
/* Fall through. */
|
||||
case 1:
|
||||
*wp++ = '.';
|
||||
*wp++ = *cp++;
|
||||
}
|
||||
*wp = '\0';
|
||||
_dl_debug_printf ("\
|
||||
time needed to load objects: %s (%s%%)\n",
|
||||
buf, pbuf);
|
||||
}
|
||||
#if HP_TIMING_INLINE
|
||||
print_statistics_item (" time needed to load objects",
|
||||
load_time, *rtld_total_timep);
|
||||
#endif
|
||||
}
|
||||
|
@ -342,7 +342,7 @@ struct pthread
|
||||
/* Lock for synchronizing setxid calls. */
|
||||
unsigned int setxid_futex;
|
||||
|
||||
#if HP_TIMING_AVAIL
|
||||
#if HP_TIMING_INLINE
|
||||
hp_timing_t cpuclock_offset_ununsed;
|
||||
#endif
|
||||
|
||||
|
@ -17,16 +17,13 @@
|
||||
License along with the GNU C Library. If not, see
|
||||
<http://www.gnu.org/licenses/>. */
|
||||
|
||||
#ifndef _HP_TIMING_H
|
||||
#define _HP_TIMING_H 1
|
||||
#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_AVAIL (0)
|
||||
#define HP_SMALL_TIMING_AVAIL (1)
|
||||
|
||||
/* We indeed have inlined functions. */
|
||||
#define HP_TIMING_INLINE (1)
|
||||
# define HP_TIMING_INLINE (1)
|
||||
|
||||
/* We use 32 bit values for the times. */
|
||||
typedef unsigned int hp_timing_t;
|
||||
@ -34,13 +31,16 @@ 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) \
|
||||
# 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>
|
||||
|
||||
#include <hp-timing-common.h>
|
||||
#else
|
||||
# include <sysdeps/generic/hp-timing.h>
|
||||
#endif /* IS_IN(rtld) */
|
||||
|
||||
#endif /* hp-timing.h */
|
||||
|
@ -20,8 +20,6 @@
|
||||
/* In case a platform supports timers in the hardware the following macros
|
||||
and types must be defined:
|
||||
|
||||
- HP_TIMING_AVAIL: test for availability.
|
||||
|
||||
- HP_TIMING_INLINE: this macro is non-zero if the functionality is not
|
||||
implemented using function calls but instead uses some inlined code
|
||||
which might simply consist of a few assembler instructions. We have to
|
||||
@ -47,16 +45,16 @@
|
||||
/* Accumulate ADD into SUM. No attempt is made to be thread-safe. */
|
||||
#define HP_TIMING_ACCUM_NT(Sum, Diff) ((Sum) += (Diff))
|
||||
|
||||
#define HP_TIMING_PRINT_SIZE (3 * sizeof (hp_timing_t) + 1)
|
||||
|
||||
/* Write a decimal representation of the timing value into the given string. */
|
||||
#define HP_TIMING_PRINT(Dest, Len, Val) \
|
||||
do { \
|
||||
char __buf[20]; \
|
||||
char __buf[HP_TIMING_PRINT_SIZE]; \
|
||||
char *__dest = (Dest); \
|
||||
size_t __len = (Len); \
|
||||
char *__cp = _itoa ((Val), __buf + sizeof (__buf), 10, 0); \
|
||||
size_t __cp_len = MIN (__buf + sizeof (__buf) - __cp, __len); \
|
||||
memcpy (__dest, __cp, __cp_len); \
|
||||
memcpy (__dest + __cp_len, " cycles", \
|
||||
MIN (__len - __cp_len, sizeof (" cycles"))); \
|
||||
__dest[__len - 1] = '\0'; \
|
||||
} while (0)
|
||||
|
@ -25,8 +25,6 @@
|
||||
the system call might be too high. */
|
||||
|
||||
/* Provide dummy definitions. */
|
||||
#define HP_TIMING_AVAIL (0)
|
||||
#define HP_SMALL_TIMING_AVAIL (0)
|
||||
#define HP_TIMING_INLINE (0)
|
||||
typedef int hp_timing_t;
|
||||
#define HP_TIMING_NOW(var)
|
||||
@ -34,7 +32,4 @@ typedef int hp_timing_t;
|
||||
#define HP_TIMING_ACCUM_NT(Sum, Diff)
|
||||
#define HP_TIMING_PRINT(Buf, Len, Val)
|
||||
|
||||
/* Since this implementation is not available we tell the user about it. */
|
||||
#define HP_TIMING_NONAVAIL 1
|
||||
|
||||
#endif /* hp-timing.h */
|
||||
|
@ -20,10 +20,6 @@
|
||||
#ifndef _HP_TIMING_H
|
||||
#define _HP_TIMING_H 1
|
||||
|
||||
/* We always assume having the timestamp register. */
|
||||
#define HP_TIMING_AVAIL (1)
|
||||
#define HP_SMALL_TIMING_AVAIL (1)
|
||||
|
||||
/* We indeed have inlined functions. */
|
||||
#define HP_TIMING_INLINE (1)
|
||||
|
||||
|
@ -20,10 +20,6 @@
|
||||
#ifndef _HP_TIMING_H
|
||||
#define _HP_TIMING_H 1
|
||||
|
||||
/* We always assume having the timestamp register. */
|
||||
#define HP_TIMING_AVAIL (1)
|
||||
#define HP_SMALL_TIMING_AVAIL (1)
|
||||
|
||||
/* We indeed have inlined functions. */
|
||||
#define HP_TIMING_INLINE (1)
|
||||
|
||||
|
@ -20,10 +20,6 @@
|
||||
#ifndef _HP_TIMING_H
|
||||
#define _HP_TIMING_H 1
|
||||
|
||||
/* We always assume having the timestamp register. */
|
||||
#define HP_TIMING_AVAIL (1)
|
||||
#define HP_SMALL_TIMING_AVAIL (1)
|
||||
|
||||
/* We indeed have inlined functions. */
|
||||
#define HP_TIMING_INLINE (1)
|
||||
|
||||
|
@ -20,8 +20,6 @@
|
||||
#ifndef _HP_TIMING_H
|
||||
#define _HP_TIMING_H 1
|
||||
|
||||
#define HP_TIMING_AVAIL (1)
|
||||
#define HP_SMALL_TIMING_AVAIL (1)
|
||||
#define HP_TIMING_INLINE (1)
|
||||
|
||||
typedef unsigned long long int hp_timing_t;
|
||||
|
@ -20,8 +20,6 @@
|
||||
#ifndef _HP_TIMING_H
|
||||
#define _HP_TIMING_H 1
|
||||
|
||||
#define HP_TIMING_AVAIL (1)
|
||||
#define HP_SMALL_TIMING_AVAIL (1)
|
||||
#define HP_TIMING_INLINE (1)
|
||||
|
||||
typedef unsigned long int hp_timing_t;
|
||||
|
@ -22,10 +22,6 @@
|
||||
#include <isa.h>
|
||||
|
||||
#if MINIMUM_ISA == 686 || MINIMUM_ISA == 8664
|
||||
/* We always assume having the timestamp register. */
|
||||
# define HP_TIMING_AVAIL (1)
|
||||
# define HP_SMALL_TIMING_AVAIL (1)
|
||||
|
||||
/* We indeed have inlined functions. */
|
||||
# define HP_TIMING_INLINE (1)
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user