rpms/kernel/devel linux-2.6-sched-cfs-fix-mc.patch, NONE, 1.1 kernel.spec, 1.150, 1.151
Chuck Ebbert (cebbert)
fedora-extras-commits at redhat.com
Thu Sep 6 19:48:09 UTC 2007
- Previous message (by thread): [pkgdb] aspell-sk was added for ondrejj
- Next message (by thread): rpms/openssh/devel openssh-4.3p2-cve-2007-3102.patch, NONE, 1.1 openssh-4.7p1-audit.patch, NONE, 1.1 openssh-4.7p1-log-in-chroot.patch, NONE, 1.1 openssh-4.7p1-mls.patch, NONE, 1.1 openssh-4.7p1-nss-keys.patch, NONE, 1.1 openssh-4.7p1-pam-session.patch, NONE, 1.1 openssh-4.7p1-redhat.patch, NONE, 1.1 openssh-4.7p1-selinux.patch, NONE, 1.1 openssh-4.7p1-sftp-drain-acks.patch, NONE, 1.1 openssh-4.7p1-vendor.patch, NONE, 1.1 .cvsignore, 1.19, 1.20 openssh.spec, 1.112, 1.113 sources, 1.19, 1.20 openssh-3.9p1-log-in-chroot.patch, 1.1, NONE openssh-4.3p2-pam-session.patch, 1.3, NONE openssh-4.5p1-audit.patch, 1.1, NONE openssh-4.5p1-mls.patch, 1.5, NONE openssh-4.5p1-nss-keys.patch, 1.3, NONE openssh-4.5p1-redhat.patch, 1.1, NONE openssh-4.5p1-selinux.patch, 1.2, NONE openssh-4.5p1-sftp-drain-acks.patch, 1.1, NONE openssh-4.5p1-vendor.patch, 1.1, NONE
- Messages sorted by:
[ date ]
[ thread ]
[ subject ]
[ author ]
Author: cebbert
Update of /cvs/pkgs/rpms/kernel/devel
In directory cvs-int.fedora.redhat.com:/tmp/cvs-serv8627
Modified Files:
kernel.spec
Added Files:
linux-2.6-sched-cfs-fix-mc.patch
Log Message:
* Thu Sep 06 2007 Chuck Ebbert <cebbert at redhat.com>
- fix imbalance in scheduler on multicore systems
linux-2.6-sched-cfs-fix-mc.patch:
--- NEW FILE linux-2.6-sched-cfs-fix-mc.patch ---
Try to fix MC/HT scheduler optimization breakage again, with out breaking
the FUZZ logic.
First fix the check
if (*imbalance + SCHED_LOAD_SCALE_FUZZ < busiest_load_per_task)
with this
if (*imbalance < busiest_load_per_task)
As the current check is always false for nice 0 tasks (as SCHED_LOAD_SCALE_FUZZ
is same as busiest_load_per_task for nice 0 tasks).
With the above change, imbalance was getting reset to 0 in the corner case
condition, making the FUZZ logic fail. Fix it by not corrupting the
imbalance and change the imbalance, only when it finds that the
HT/MC optimization is needed.
Signed-off-by: Suresh Siddha <suresh.b.siddha at intel.com>
---
diff --git a/kernel/sched.c b/kernel/sched.c
index 9fe473a..03e5e8d 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -2511,7 +2511,7 @@ group_next:
* a think about bumping its value to force at least one task to be
* moved
*/
- if (*imbalance + SCHED_LOAD_SCALE_FUZZ < busiest_load_per_task) {
+ if (*imbalance < busiest_load_per_task) {
unsigned long tmp, pwr_now, pwr_move;
unsigned int imbn;
@@ -2563,10 +2563,8 @@ small_imbalance:
pwr_move /= SCHED_LOAD_SCALE;
/* Move if we gain throughput */
- if (pwr_move <= pwr_now)
- goto out_balanced;
-
- *imbalance = busiest_load_per_task;
+ if (pwr_move > pwr_now)
+ *imbalance = busiest_load_per_task;
}
return busiest;
Index: kernel.spec
===================================================================
RCS file: /cvs/pkgs/rpms/kernel/devel/kernel.spec,v
retrieving revision 1.150
retrieving revision 1.151
diff -u -r1.150 -r1.151
--- kernel.spec 6 Sep 2007 19:41:27 -0000 1.150
+++ kernel.spec 6 Sep 2007 19:47:37 -0000 1.151
@@ -670,6 +670,7 @@
Patch1520: linux-2.6-xen-fix-bootup.patch
Patch1525: linux-2.6-skb_copy_and_csum_datagram_iovec.patch
Patch1530: linux-2.6-x86-fix-hang-on-C7.patch
+Patch1535: linux-2.6-sched-cfs-fix-mc.patch
%endif
@@ -1202,6 +1203,9 @@
# fix hang on C7 CPU
ApplyPatch linux-2.6-x86-fix-hang-on-C7.patch
+# fix scheduler on multicore
+ApplyPatch linux-2.6-sched-cfs-fix-mc.patch
+
# END OF PATCH APPLICATIONS
%endif
@@ -1794,6 +1798,9 @@
%changelog
* Thu Sep 06 2007 Chuck Ebbert <cebbert at redhat.com>
+- fix imbalance in scheduler on multicore systems
+
+* Thu Sep 06 2007 Chuck Ebbert <cebbert at redhat.com>
- fix Xen boot problem
- fix boot hang on Via C7 CPU
- Fix oops in networking code
- Previous message (by thread): [pkgdb] aspell-sk was added for ondrejj
- Next message (by thread): rpms/openssh/devel openssh-4.3p2-cve-2007-3102.patch, NONE, 1.1 openssh-4.7p1-audit.patch, NONE, 1.1 openssh-4.7p1-log-in-chroot.patch, NONE, 1.1 openssh-4.7p1-mls.patch, NONE, 1.1 openssh-4.7p1-nss-keys.patch, NONE, 1.1 openssh-4.7p1-pam-session.patch, NONE, 1.1 openssh-4.7p1-redhat.patch, NONE, 1.1 openssh-4.7p1-selinux.patch, NONE, 1.1 openssh-4.7p1-sftp-drain-acks.patch, NONE, 1.1 openssh-4.7p1-vendor.patch, NONE, 1.1 .cvsignore, 1.19, 1.20 openssh.spec, 1.112, 1.113 sources, 1.19, 1.20 openssh-3.9p1-log-in-chroot.patch, 1.1, NONE openssh-4.3p2-pam-session.patch, 1.3, NONE openssh-4.5p1-audit.patch, 1.1, NONE openssh-4.5p1-mls.patch, 1.5, NONE openssh-4.5p1-nss-keys.patch, 1.3, NONE openssh-4.5p1-redhat.patch, 1.1, NONE openssh-4.5p1-selinux.patch, 1.2, NONE openssh-4.5p1-sftp-drain-acks.patch, 1.1, NONE openssh-4.5p1-vendor.patch, 1.1, NONE
- Messages sorted by:
[ date ]
[ thread ]
[ subject ]
[ author ]
More information about the fedora-extras-commits
mailing list