Revision c3274763bfc3bf1ececa269ed6e6c4d7ec1c3e5e authored by Srivatsa S. Bhat on 17 February 2014, 10:48:21 UTC, committed by Rafael J. Wysocki on 19 February 2014, 00:04:56 UTC
The powernow-k8 driver maintains a per-cpu data-structure called powernow_data that is used to perform the frequency transitions. It initializes this data structure only for the policy->cpu. So, accesses to this data structure by other CPUs results in various problems because they would have been uninitialized. Specifically, if a cpu (!= policy->cpu) invokes the drivers' ->get() function, it returns 0 as the KHz value, since its per-cpu memory doesn't point to anything valid. This causes problems during suspend/resume since cpufreq_update_policy() tries to enforce this (0 KHz) as the current frequency of the CPU, and this madness gets propagated to adjust_jiffies() as well. Eventually, lots of things start breaking down, including the r8169 ethernet card, in one particularly interesting case reported by Pierre Ossman. Fix this by initializing the per-cpu data-structures of all the CPUs in the policy appropriately. References: https://bugzilla.kernel.org/show_bug.cgi?id=70311 Reported-by: Pierre Ossman <pierre@ossman.eu> Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Cc: All applicable <stable@vger.kernel.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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9p | ||
adfs | ||
affs | ||
afs | ||
autofs4 | ||
befs | ||
bfs | ||
btrfs | ||
cachefiles | ||
ceph | ||
cifs | ||
coda | ||
configfs | ||
cramfs | ||
debugfs | ||
devpts | ||
dlm | ||
ecryptfs | ||
efivarfs | ||
efs | ||
exofs | ||
exportfs | ||
ext2 | ||
ext3 | ||
ext4 | ||
f2fs | ||
fat | ||
freevxfs | ||
fscache | ||
fuse | ||
gfs2 | ||
hfs | ||
hfsplus | ||
hostfs | ||
hpfs | ||
hppfs | ||
hugetlbfs | ||
isofs | ||
jbd | ||
jbd2 | ||
jffs2 | ||
jfs | ||
kernfs | ||
lockd | ||
logfs | ||
minix | ||
ncpfs | ||
nfs | ||
nfs_common | ||
nfsd | ||
nilfs2 | ||
nls | ||
notify | ||
ntfs | ||
ocfs2 | ||
omfs | ||
openpromfs | ||
proc | ||
pstore | ||
qnx4 | ||
qnx6 | ||
quota | ||
ramfs | ||
reiserfs | ||
romfs | ||
squashfs | ||
sysfs | ||
sysv | ||
ubifs | ||
udf | ||
ufs | ||
xfs | ||
Kconfig | -rw-r--r-- | 5.9 KB |
Kconfig.binfmt | -rw-r--r-- | 7.2 KB |
Makefile | -rw-r--r-- | 4.1 KB |
aio.c | -rw-r--r-- | 37.8 KB |
anon_inodes.c | -rw-r--r-- | 5.2 KB |
attr.c | -rw-r--r-- | 7.9 KB |
bad_inode.c | -rw-r--r-- | 7.7 KB |
binfmt_aout.c | -rw-r--r-- | 11.1 KB |
binfmt_elf.c | -rw-r--r-- | 57.0 KB |
binfmt_elf_fdpic.c | -rw-r--r-- | 47.1 KB |
binfmt_em86.c | -rw-r--r-- | 2.6 KB |
binfmt_flat.c | -rw-r--r-- | 26.4 KB |
binfmt_misc.c | -rw-r--r-- | 14.8 KB |
binfmt_script.c | -rw-r--r-- | 2.7 KB |
binfmt_som.c | -rw-r--r-- | 7.1 KB |
bio-integrity.c | -rw-r--r-- | 17.9 KB |
bio.c | -rw-r--r-- | 49.2 KB |
block_dev.c | -rw-r--r-- | 41.9 KB |
buffer.c | -rw-r--r-- | 88.8 KB |
char_dev.c | -rw-r--r-- | 14.1 KB |
compat.c | -rw-r--r-- | 36.7 KB |
compat_binfmt_elf.c | -rw-r--r-- | 3.6 KB |
compat_ioctl.c | -rw-r--r-- | 45.3 KB |
coredump.c | -rw-r--r-- | 17.9 KB |
dcache.c | -rw-r--r-- | 87.7 KB |
dcookies.c | -rw-r--r-- | 6.9 KB |
direct-io.c | -rw-r--r-- | 39.4 KB |
drop_caches.c | -rw-r--r-- | 1.5 KB |
eventfd.c | -rw-r--r-- | 11.3 KB |
eventpoll.c | -rw-r--r-- | 58.9 KB |
exec.c | -rw-r--r-- | 37.5 KB |
fcntl.c | -rw-r--r-- | 16.3 KB |
fhandle.c | -rw-r--r-- | 6.5 KB |
file.c | -rw-r--r-- | 21.1 KB |
file_table.c | -rw-r--r-- | 9.4 KB |
filesystems.c | -rw-r--r-- | 6.4 KB |
fs-writeback.c | -rw-r--r-- | 39.7 KB |
fs_struct.c | -rw-r--r-- | 3.3 KB |
inode.c | -rw-r--r-- | 48.7 KB |
internal.h | -rw-r--r-- | 3.6 KB |
ioctl.c | -rw-r--r-- | 15.5 KB |
ioprio.c | -rw-r--r-- | 5.0 KB |
libfs.c | -rw-r--r-- | 26.7 KB |
locks.c | -rw-r--r-- | 64.8 KB |
mbcache.c | -rw-r--r-- | 16.5 KB |
mount.h | -rw-r--r-- | 2.8 KB |
mpage.c | -rw-r--r-- | 19.8 KB |
namei.c | -rw-r--r-- | 109.9 KB |
namespace.c | -rw-r--r-- | 71.0 KB |
no-block.c | -rw-r--r-- | 688 bytes |
open.c | -rw-r--r-- | 25.8 KB |
pipe.c | -rw-r--r-- | 29.3 KB |
pnode.c | -rw-r--r-- | 9.0 KB |
pnode.h | -rw-r--r-- | 1.5 KB |
posix_acl.c | -rw-r--r-- | 19.8 KB |
proc_namespace.c | -rw-r--r-- | 7.5 KB |
read_write.c | -rw-r--r-- | 27.3 KB |
readdir.c | -rw-r--r-- | 6.8 KB |
select.c | -rw-r--r-- | 25.4 KB |
seq_file.c | -rw-r--r-- | 21.7 KB |
signalfd.c | -rw-r--r-- | 9.1 KB |
splice.c | -rw-r--r-- | 47.7 KB |
stack.c | -rw-r--r-- | 2.5 KB |
stat.c | -rw-r--r-- | 12.0 KB |
statfs.c | -rw-r--r-- | 5.3 KB |
super.c | -rw-r--r-- | 34.4 KB |
sync.c | -rw-r--r-- | 9.6 KB |
timerfd.c | -rw-r--r-- | 11.4 KB |
utimes.c | -rw-r--r-- | 5.9 KB |
xattr.c | -rw-r--r-- | 23.5 KB |
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