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Adhemerval Zanella 9d7c5cc38e linux: Normalize and return timeout on select (BZ #27651) 
The commit 2433d39b69, which added time64 support to select, changed
the function to use __NR_pselect6 (or __NR_pelect6_time64) on all
architectures.  However, on architectures where the symbol was
implemented with __NR_select the kernel normalizes the passed timeout
instead of return EINVAL.  For instance, the input timeval
{ 0, 5000000 } is interpreted as { 5, 0 }.

And as indicated by BZ #27651, this semantic seems to be expected
and changing it results in some performance issues (most likely
the program does not check the return code and keeps issuing
select with unormalized tv_usec argument).

To avoid a different semantic depending whether which syscall the
architecture used to issue, select now always normalize the timeout
input.  This is a slight change for some ABIs (for instance aarch64).

Checked on x86_64-linux-gnu and i686-linux-gnu.
 		2021-04-12 18:38:37 -03:00
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arpa
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bits sysconf: Add _SC_MINSIGSTKSZ/_SC_SIGSTKSZ [BZ #20305] 2021-02-01 11:00:52 -08:00
gnu Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
net
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netinet nss_files: Consolidate line parse declarations in <nss_files.h> 2020-07-21 07:33:20 +02:00
programs Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
protocols
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rpc Handle out-of-memory case in svc_tcp.c/svc_unix.c:rendezvous_request. 2020-12-10 11:11:20 +01:00
rpcsvc Remove --enable-obsolete-nsl configure flag 2020-07-08 17:25:57 +02:00
sys linux: Consolidate statvfs implementations 2021-02-11 08:00:41 -03:00
aio.h y2038: Convert aio_suspend to support 64 bit time 2020-11-30 14:08:44 +01:00
aliases.h Remove --enable-obsolete-nsl configure flag 2020-07-08 17:25:57 +02:00
alloc_buffer.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
alloca.h
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allocate_once.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
ar.h
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argp-fmtstream.h
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argp.h
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argz.h
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array_length.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
assert.h
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atomic.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
byteswap.h
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complex.h
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cpio.h
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crypt.h
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ctype.h
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des.h
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dirent.h hurd: keep only required PLTs in ld.so 2020-11-11 02:36:22 +01:00
dlfcn.h Remove --enable-obsolete-nsl configure flag 2020-07-08 17:25:57 +02:00
dso_handle.h
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elf.h
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endian.h
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envz.h
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err.h ldbl-128ibm-compat: PLT redirects for using ldbl redirects internally 2020-03-25 14:34:23 -05:00
errno.h Remove tls.h inclusion from internal errno.h 2020-11-13 12:59:19 -03:00
error.h
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execinfo.h
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fcntl.h
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features.h sysconf: Add _SC_MINSIGSTKSZ/_SC_SIGSTKSZ [BZ #20305] 2021-02-01 11:00:52 -08:00
fenv.h
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file_change_detection.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
filename.h Import filename.h from gnulib 2021-01-05 11:33:16 -03:00
float.h
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fmtmsg.h
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fnmatch.h
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fpu_control.h
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fstab.h
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fts.h
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ftw.h
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gconv.h
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getopt.h
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getopt_int.h
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glob.h
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gmp.h
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gnu-versions.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
grp-merge.h
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grp.h nss_files: Consolidate line parse declarations in <nss_files.h> 2020-07-21 07:33:20 +02:00
gshadow.h nss_files: Consolidate line parse declarations in <nss_files.h> 2020-07-21 07:33:20 +02:00
iconv.h
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idx.h Import idx.h from gnulib 2021-01-05 11:33:16 -03:00
ifaddrs.h
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ifreq.h
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ifunc-impl-list.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
inline-hashtab.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
intprops.h Sync intprops.h with gnulib 2021-01-04 08:42:04 -03:00
inttypes.h Make strtoimax, strtoumax, wcstoimax, wcstoumax into aliases 2020-12-08 18:15:27 +00:00
langinfo.h
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lastlog.h
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libc-diag.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libc-internal.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libc-pointer-arith.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
libc-symbols.h Support for multiple versions in versioned_symbol, compat_symbol 2021-03-25 12:33:02 +01:00
libgen.h
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libintl.h Document the internal _ and N_ macros 2020-05-06 17:35:40 +02:00
limits.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
link.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
list.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
list_t.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
locale.h
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loop_unroll.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
malloc.h malloc: Move MTAG_MMAP_FLAGS definition 2021-03-26 11:03:06 +00:00
math-narrow-eval.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
math.h float128: use builtin_signbitf128 always 2020-05-04 13:18:45 -05:00
mcheck.h
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memory.h
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mntent.h
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monetary.h Rename __LONG_DOUBLE_USES_FLOAT128 to __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI 2020-04-30 08:52:08 -05:00
mqueue.h y2038: linux: Provide __mq_timedreceive_time64 implementation 2020-04-06 23:05:11 +02:00
netdb.h y2038: Convert gai_suspend to support 64 bit time 2020-12-04 10:04:38 +01:00
netgroup.h
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nl_types.h
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nss.h
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nss_files.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
nsswitch.h
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obstack.h
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plural-exp.h
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poll.h
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printf.h Rename __LONG_DOUBLE_USES_FLOAT128 to __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI 2020-04-30 08:52:08 -05:00
pthread.h
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pty.h
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pwd.h nss_files: Consolidate line parse declarations in <nss_files.h> 2020-07-21 07:33:20 +02:00
random-bits.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
re_comp.h
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regex.h
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regexp.h
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register-atfork.h posix: Consolidate register-atfork 2021-03-12 10:19:22 -03:00
resolv.h
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rounding-mode.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
rtld-malloc.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
sched.h Add hidden prototypes for __sched_getparam, __sched_getscheduler 2020-02-20 08:57:01 +01:00
scratch_buffer.h malloc: Add scratch_buffer_dupfree 2021-01-05 11:33:16 -03:00
search.h
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set-hooks.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
setjmp.h hurd: keep only required PLTs in ld.so 2020-11-11 02:36:22 +01:00
sgtty.h
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shadow.h nss_files: Consolidate line parse declarations in <nss_files.h> 2020-07-21 07:33:20 +02:00
shlib-compat.h Add OTHER_SHLIB_COMPAT 2021-03-26 13:36:16 -03:00
shm-directory.h linux: Require /dev/shm as the shared memory file system 2021-02-08 14:10:42 -03:00
signal.h hurd: keep only required PLTs in ld.so 2020-11-11 02:36:22 +01:00
spawn.h
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stab.h
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stackinfo.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
stap-probe.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
stdc-predef.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
stdint.h
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stdio.h libio: Remove __libc_readline_unlocked 2020-07-21 07:34:50 +02:00
stdio_ext.h
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stdlib.h hurd: keep only required PLTs in ld.so 2020-11-11 02:36:22 +01:00
string.h string: Enable __FORTIFY_LEVEL=3 2020-12-31 16:55:21 +05:30
strings.h
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struct___timeb64.h time: Add 64-bit time_t support for ftime 2020-10-27 09:54:50 -03:00
struct___timespec64.h y2038: include: Move struct __timespec64 definition to a separate file 2020-04-06 23:05:11 +02:00
struct___timeval64.h y2038: include: Move struct __timeval64 definition to a separate file 2020-05-05 19:36:25 +02:00
stubs-prologue.h
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syscall.h
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sysexits.h
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syslog.h
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tar.h
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termios.h
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tgmath.h
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time.h linux: Normalize and return timeout on select (BZ #27651) 2021-04-12 18:38:37 -03:00
ttyent.h
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uchar.h
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ucontext.h
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ulimit.h
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unistd.h nptl: Remove pwrite from libpthread 2021-03-26 13:37:18 -03:00
utime.h
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utmp.h
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values.h Update copyright dates with scripts/update-copyrights 2021-01-02 12:17:34 -08:00
verify.h
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wait.h
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wchar.h Rename __LONG_DOUBLE_USES_FLOAT128 to __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI 2020-04-30 08:52:08 -05:00
wctype.h
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wordexp.h
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