The patch titled
sched-hackery
has been added to the -mm tree. Its filename is
sched-hackery.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: sched-hackery
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/sched.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff -puN kernel/sched.c~sched-hackery kernel/sched.c
--- a/kernel/sched.c~sched-hackery
+++ a/kernel/sched.c
@@ -1492,7 +1492,10 @@ update_group_shares_cpu(struct task_grou
* \Sum rq_weight
*
*/
- raw_shares = (sd_shares * rq_weight) / sd_rq_weight;
+ if (WARN_ON(!sd_rq_weight))
+ raw_shares = 1;
+ else
+ raw_shares = (sd_shares * rq_weight) / sd_rq_weight;
shares = raw_shares;
} else {
/*
@@ -1501,7 +1504,10 @@ update_group_shares_cpu(struct task_grou
* run here it will not get delayed by group starvation.
*/
raw_shares = 0;
- shares = sd_shares / empty;
+ if (WARN_ON(!empty))
+ shares = 1;
+ else
+ shares = sd_shares / empty;
}
shares = clamp_t(unsigned long, shares, MIN_SHARES, MAX_SHARES);
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
mm-remove-the-might_sleep-from-lock_page.patch
linux-next.patch
next-remove-localversion.patch
linux-next-git-rejects.patch
sched-hackery.patch
fs-dlm-astc-fix-warning.patch
linux-timexh-cleanup-for-userspace.patch
drivers-input-touchscreen-ucb1400_tsc-needs-gpio.patch
video-mbp_nvidia_bl-add-support-for-macbook-5-macbook-air-2-and-macbook-pro-5-fix.patch
raw-fix-rawctl-compat-ioctls-breakage-on-amd64-and-itanic-checkpatch-fixes.patch
scsi-dpt_i2o-is-bust-on-ia64.patch
mm-invoke-oom-killer-from-page-fault-fix.patch
mm-invoke-oom-killer-from-page-fault-fix-fix-2.patch
mm-write_cache_pages-more-terminate-quickly.patch
swapfile-change-discard-pgoff_t-to-sector_t-fix.patch
fs-truncate-blocks-outside-i_size-after-o_direct-write-error-fix.patch
vmscan-shrink_active_list-reduce-lru_lock-hold-time.patch
page_fault-retry-with-nopage_retry-fix.patch
page_fault-retry-with-nopage_retry-fix-fix.patch
mm-mmapc-fix-coding-style-fix.patch
init-properly-placing-noinline-keyword.patch
add-pr_prefix-to-pr_xyz-macros-checkpatch-fixes.patch
poll-allow-f_op-poll-to-sleep-take6.patch
ioc4-automatically-load-sgiioc4-subordinate-module-checkpatch-fixes.patch
smp_call_function_single-be-slightly-less-stupid.patch
kernel-hrtimerc-kill-warning.patch
binfmtsh-include-listh-fix.patch
spi_gpio-driver-cleanups.patch
kprobes-support-probing-module-__exit-function-fix.patch
kprobes-support-probing-module-__exit-function-fix-2.patch
nfs-optimize-attribute-timeouts-for-noac-and-actimeo=0-checkpatch-fixes.patch
nfs-optimize-attribute-timeouts-for-noac-and-actimeo=0-checkpatch-fixes-checkpatch-fixes.patch
rtc-au1000-on-chip-counter0-as-rtc-driver-fix.patch
cgroups-skip-processes-from-other-namespaces-when-listing-a-cgroup-checkpatch-fixes.patch
memcg-introduce-charge-commit-cancel-style-of-functions-fix.patch
memcg-new-force_empty-to-free-pages-under-group-fix-fix.patch
memcg-swap-cgroup-for-remembering-usage.patch
memory-cgroup-resource-counters-for-hierarchy-v4-checkpatch-fixes.patch
memory-cgroup-hierarchical-reclaim-v4-checkpatch-fixes.patch
memcg-avoid-unnecessary-system-wide-oom-killer-fix.patch
edac-struct-device-replace-bus_id-with-dev_name-dev_set_name-checkpatch-fixes.patch
edac-x38-use-the-architectures-readq-function-fix.patch
edac-x38-use-the-architectures-readq-function-fix-fix.patch
parport-ieee1284-use-del_timer_sync-in-parport_wait_event-checkpatch-fixes.patch
w1-allow-master-io-commands-fix.patch
romfs-romfs_iget-unsigned-ino-=-0-is-always-true-checkpatch-fixes.patch
filesystem-freeze-implement-generic-freeze-feature-fix.patch
nilfs2-inode-operations-fix.patch
nilfs2-pathname-operations-fix.patch
nilfs2-super-block-operations-fix.patch
reiser4.patch
reiser4-tree_lock-fixes.patch
reiser4-tree_lock-fixes-fix.patch
reiser4-semaphore-fix.patch
slb-drop-kmem-cache-argument-from-constructor-reiser4.patch
reiser4-suid.patch
reiser4-track-upstream-changes.patch
reiser4-remove-simple_prepare_write-usage-checkpatch-fixes.patch
nr_blockdev_pages-in_interrupt-warning.patch
slab-leaks3-default-y.patch
put_bh-debug.patch
shrink_slab-handle-bad-shrinkers.patch
getblk-handle-2tb-devices.patch
getblk-handle-2tb-devices-fix.patch
undeprecate-pci_find_device.patch
notify_change-callers-must-hold-i_mutex.patch
drivers-net-bonding-bond_sysfsc-suppress-uninitialized-var-warning.patch
w1-build-fix.patch
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