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| author | Andi Kleen <ak@linux.intel.com> | 2011-10-17 14:43:37 +0000 |
|---|---|---|
| committer | Andi Kleen <ak@gcc.gnu.org> | 2011-10-17 14:43:37 +0000 |
| commit | 711a3d82e524cae4fa2acce8f2e363f0f23a6032 (patch) | |
| tree | b0f5ec12dbc9d0cd2f36e94c063c914fbfe5bb72 /gcc/configure | |
| parent | 411f92de7a3e15a42d3d640e5f7a0bc4cfc3e049 (diff) | |
| download | gcc-711a3d82e524cae4fa2acce8f2e363f0f23a6032.zip gcc-711a3d82e524cae4fa2acce8f2e363f0f23a6032.tar.gz gcc-711a3d82e524cae4fa2acce8f2e363f0f23a6032.tar.bz2 | |
Use MADV_DONTNEED for freeing in garbage collector
Use the Linux MADV_DONTNEED call to unmap free pages in the garbage
collector.Then keep the unmapped pages in the free list. This avoid
excessive memory fragmentation on large LTO bulds, which can lead
to gcc bumping into the Linux vm_max_map limit per process.
gcc/:
2011-10-08 Andi Kleen <ak@linux.intel.com>
PR other/50636
* config.in, configure: Regenerate.
* configure.ac (madvise): Add to AC_CHECK_FUNCS.
* ggc-page.c (USING_MADVISE): Add.
(page_entry): Add discarded field.
(alloc_page): Check for discarded pages.
(release_pages): Add USING_MADVISE branch.
From-SVN: r180093
Diffstat (limited to 'gcc/configure')
| -rwxr-xr-x | gcc/configure | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/configure b/gcc/configure index cb55dda..4a54adf 100755 --- a/gcc/configure +++ b/gcc/configure @@ -9001,7 +9001,7 @@ fi for ac_func in times clock kill getrlimit setrlimit atoll atoq \ sysconf strsignal getrusage nl_langinfo \ gettimeofday mbstowcs wcswidth mmap setlocale \ - clearerr_unlocked feof_unlocked ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked putchar_unlocked putc_unlocked + clearerr_unlocked feof_unlocked ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked putchar_unlocked putc_unlocked madvise do : as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh` ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var" |