diff options
Diffstat (limited to 'toolchain/uClibc/patches-0.9.33.2/021-add-posix_madvise.c.patch')
| -rw-r--r-- | toolchain/uClibc/patches-0.9.33.2/021-add-posix_madvise.c.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/toolchain/uClibc/patches-0.9.33.2/021-add-posix_madvise.c.patch b/toolchain/uClibc/patches-0.9.33.2/021-add-posix_madvise.c.patch new file mode 100644 index 0000000000..2b18c258d9 --- /dev/null +++ b/toolchain/uClibc/patches-0.9.33.2/021-add-posix_madvise.c.patch @@ -0,0 +1,48 @@ +From: "Peter S. Mazinger" <ps.m@gmx.net> +Date: Tue, 26 Apr 2011 23:03:44 +0200 +Subject: [PATCH] add posix_madvise.c + +Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> +Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> +--- + create mode 100644 libc/sysdeps/linux/common/posix_madvise.c + +--- a/libc/sysdeps/linux/common/Makefile.in ++++ b/libc/sysdeps/linux/common/Makefile.in +@@ -81,7 +81,7 @@ CSRC-$(UCLIBC_HAS_REALTIME) += clock_get + sched_get_priority_max.c sched_get_priority_min.c sched_getscheduler.c \ + sched_rr_get_interval.c sched_setparam.c sched_setscheduler.c sigqueue.c + # clock_getcpuclockid|clock_nanosleep|mq_timedreceive|mq_timedsend|posix_fadvise|posix_fallocate|posix_madvise|posix_memalign|posix_mem_offset|posix_spawnattr_destroy|posix_spawnattr_init|posix_spawnattr_getflags|posix_spawnattr_setflags|posix_spawnattr_getpgroup|posix_spawnattr_setpgroup|posix_spawnattr_getschedparam|posix_spawnattr_setschedparam|posix_spawnattr_getschedpolicy|posix_spawnattr_setschedpolicy|posix_spawnattr_getsigdefault|posix_spawnattr_setsigdefault|posix_spawnattr_getsigmask|posix_spawnattr_setsigmask|posix_spawnattr_init|posix_spawnattr_setflags|posix_spawnattr_setpgroup|posix_spawnattr_setschedparam|posix_spawnattr_setschedpolicy|posix_spawnattr_setsigdefault|posix_spawnattr_setsigmask|posix_spawn_file_actions_addclose|posix_spawn_file_actions_addopen|posix_spawn_file_actions_adddup2|posix_spawn_file_actions_addopen|posix_spawn_file_actions_destroy|posix_spawn_file_actions_init|posix_spawn_file_actions_init|posix_spawn|posix_spawnp|posix_spawnp|posix_typed_mem_get_info|pthread_mutex_timedlock|sem_timedwait +-CSRC-$(UCLIBC_HAS_ADVANCED_REALTIME) += posix_fadvise64.c posix_fadvise.c ++CSRC-$(UCLIBC_HAS_ADVANCED_REALTIME) += posix_fadvise64.c posix_fadvise.c posix_madvise.c + CSRC-$(UCLIBC_SUSV4_LEGACY) += utime.c + CSRC-$(UCLIBC_HAS_EPOLL) += epoll.c + CSRC-$(UCLIBC_HAS_XATTR) += xattr.c +--- /dev/null ++++ b/libc/sysdeps/linux/common/posix_madvise.c +@@ -0,0 +1,25 @@ ++/* vi: set sw=4 ts=4: */ ++/* Licensed under the LGPL v2.1, see the file LICENSE in this tarball. */ ++ ++#include <sys/mman.h> ++#include <sys/syscall.h> ++ ++#if defined __NR_madvise && defined __USE_XOPEN2K && defined __UCLIBC_HAS_ADVANCED_REALTIME__ ++int posix_madvise(void *addr, size_t len, int advice) ++{ ++ int result; ++ /* We have one problem: the kernel's MADV_DONTNEED does not ++ * correspond to POSIX's POSIX_MADV_DONTNEED. The former simply ++ * discards changes made to the memory without writing it back to ++ * disk, if this would be necessary. The POSIX behaviour does not ++ * allow this. There is no functionality mapping for the POSIX ++ * behaviour so far so we ignore that advice for now. */ ++ if (advice == POSIX_MADV_DONTNEED) ++ return 0; ++ ++ /* this part might use madvise function */ ++ INTERNAL_SYSCALL_DECL (err); ++ result = INTERNAL_SYSCALL (madvise, err, 3, addr, len, advice); ++ return INTERNAL_SYSCALL_ERRNO (result, err); ++} ++#endif |