forked from rpms/glibc
103 lines
3.1 KiB
Diff
103 lines
3.1 KiB
Diff
Patch proposed for upstream inclusion:
|
|
|
|
<https://sourceware.org/pipermail/libc-alpha/2021-September/130801.html>
|
|
|
|
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
|
|
Date: Tue Sep 7 09:22:57 2021 -0300
|
|
|
|
misc: Add __get_nprocs_sched
|
|
|
|
This is an internal function meant to return the number of avaliable
|
|
processor where the process can scheduled, different than the
|
|
__get_nprocs which returns a the system available online CPU.
|
|
|
|
The Linux implementation currently only calls __get_nprocs(), which
|
|
in tuns calls sched_getaffinity.
|
|
Reviewed-by: Florian Weimer <fweimer@redhat.com>
|
|
|
|
diff --git a/include/sys/sysinfo.h b/include/sys/sysinfo.h
|
|
index 7388356a19269335..c490561581733038 100644
|
|
--- a/include/sys/sysinfo.h
|
|
+++ b/include/sys/sysinfo.h
|
|
@@ -9,10 +9,15 @@
|
|
extern int __get_nprocs_conf (void);
|
|
libc_hidden_proto (__get_nprocs_conf)
|
|
|
|
-/* Return number of available processors. */
|
|
+/* Return number of available processors (not all of them will be
|
|
+ available to the caller process). */
|
|
extern int __get_nprocs (void);
|
|
libc_hidden_proto (__get_nprocs)
|
|
|
|
+/* Return the number of available processors which the process can
|
|
+ be scheduled. */
|
|
+extern int __get_nprocs_sched (void) attribute_hidden;
|
|
+
|
|
/* Return number of physical pages of memory in the system. */
|
|
extern long int __get_phys_pages (void);
|
|
libc_hidden_proto (__get_phys_pages)
|
|
diff --git a/malloc/arena.c b/malloc/arena.c
|
|
index 4c398753aeadbb9d..78ef4cf18c780dfc 100644
|
|
--- a/malloc/arena.c
|
|
+++ b/malloc/arena.c
|
|
@@ -878,7 +878,7 @@ arena_get2 (size_t size, mstate avoid_arena)
|
|
narenas_limit = mp_.arena_max;
|
|
else if (narenas > mp_.arena_test)
|
|
{
|
|
- int n = __get_nprocs ();
|
|
+ int n = __get_nprocs_sched ();
|
|
|
|
if (n >= 1)
|
|
narenas_limit = NARENAS_FROM_NCORES (n);
|
|
diff --git a/misc/getsysstats.c b/misc/getsysstats.c
|
|
index 2986d62247cf98ca..5cbba0f9bd93bd78 100644
|
|
--- a/misc/getsysstats.c
|
|
+++ b/misc/getsysstats.c
|
|
@@ -44,6 +44,12 @@ weak_alias (__get_nprocs, get_nprocs)
|
|
link_warning (get_nprocs, "warning: get_nprocs will always return 1")
|
|
|
|
|
|
+int
|
|
+__get_nprocs_sched (void)
|
|
+{
|
|
+ return 1;
|
|
+}
|
|
+
|
|
long int
|
|
__get_phys_pages (void)
|
|
{
|
|
diff --git a/sysdeps/mach/getsysstats.c b/sysdeps/mach/getsysstats.c
|
|
index 1267f39da26aee38..cc8023f979bf6f74 100644
|
|
--- a/sysdeps/mach/getsysstats.c
|
|
+++ b/sysdeps/mach/getsysstats.c
|
|
@@ -62,6 +62,12 @@ __get_nprocs (void)
|
|
libc_hidden_def (__get_nprocs)
|
|
weak_alias (__get_nprocs, get_nprocs)
|
|
|
|
+int
|
|
+__get_nprocs_sched (void)
|
|
+{
|
|
+ return __get_nprocs ();
|
|
+}
|
|
+
|
|
/* Return the number of physical pages on the system. */
|
|
long int
|
|
__get_phys_pages (void)
|
|
diff --git a/sysdeps/unix/sysv/linux/getsysstats.c b/sysdeps/unix/sysv/linux/getsysstats.c
|
|
index 8a5d342f0c8bbeae..e9c0dc4d83d4fb2a 100644
|
|
--- a/sysdeps/unix/sysv/linux/getsysstats.c
|
|
+++ b/sysdeps/unix/sysv/linux/getsysstats.c
|
|
@@ -87,6 +87,12 @@ __get_nprocs (void)
|
|
libc_hidden_def (__get_nprocs)
|
|
weak_alias (__get_nprocs, get_nprocs)
|
|
|
|
+int
|
|
+__get_nprocs_sched (void)
|
|
+{
|
|
+ return __get_nprocs ();
|
|
+}
|
|
+
|
|
|
|
/* On some architectures it is possible to distinguish between configured
|
|
and active cpus. */
|