7 years agonet: activity_stats: Add statistics for network transmission activity
Mike Chan [Fri, 28 May 2010 21:32:19 +0000]
net: activity_stats: Add statistics for network transmission activity

When enabled, tracks the frequency of network transmissions
(inbound and outbound) and buckets them accordingly.
Buckets are determined by time between network activity.

Each bucket represents the number of network transmisions that were
N sec or longer apart. Where N is defined as 1 << bucket index.

This network pattern tracking is particularly useful for wireless
networks (ie: 3G) where batching network activity closely together
is more power efficient than far apart.

New file: /proc/net/stat/activity

output:

Min Bucket(sec) Count
              1 7
              2 0
              4 1
              8 0
             16 0
             32 2
             64 1
            128 0

Change-Id: I4c4cd8627b872a55f326b1715c51bc3bdd6e8d92
Signed-off-by: Mike Chan <mike@android.com>

7 years agostaging: android: lowmemorykiller: Remove bitrotted codepath
San Mehat [Thu, 6 May 2010 22:43:46 +0000]
staging: android: lowmemorykiller: Remove bitrotted codepath

Now that we're murder-synchronous, this code path will never be
called (and if it does, it doesn't tell us anything useful other
than we killed a task that was already being killed by somebody
else but hadn't gotten its' signal yet)

Signed-off-by: San Mehat <san@google.com>

7 years agostaging: android: lowmemorykiller: Fix task_struct leak
San Mehat [Thu, 6 May 2010 22:40:07 +0000]
staging: android: lowmemorykiller: Fix task_struct leak

As it turns out, the CONFIG_PROFILING interfaces leak a
task struct if the notifier chain returns NOTIFY_OK.. doh.

This patch reworks lowmemkiller to use the new generic task
free notifier chain.

Signed-off-by: San Mehat <san@google.com>

7 years agolowmemorykiller: Don't try to kill the same pid over and over
San Mehat [Mon, 26 Apr 2010 22:11:04 +0000]
lowmemorykiller: Don't try to kill the same pid over and over

  Under certain circumstances, a process can take awhile to
handle a sig-kill (especially if it's in a scheduler group with
a very low share ratio). When this occurs, lowmemkiller returns
to vmscan indicating the process memory has been freed - even
though the process is still waiting to die. Since the memory
hasn't actually freed, lowmemkiller is called again shortly after,
and picks the same process to die; regardless of the fact that
it has already been 'scheduled' to die and the memory has already
been reported to vmscan as having been freed.

  Solution is to check fatal_signal_pending() on the selected
task, and if it's already pending destruction return; indicating
to vmscan that no resources were freed on this pass.

Signed-off-by: San Mehat <san@google.com>

7 years agosched: Add a generic notifier when a task struct is about to be freed
San Mehat [Thu, 6 May 2010 22:37:55 +0000]
sched: Add a generic notifier when a task struct is about to be freed

This patch adds a notifier which can be used by subsystems that may
be interested in when a task has completely died and is about to
have it's last resource freed.

  The Android lowmemory killer uses this to determine when a task
it has killed has finally given up its goods.

Signed-off-by: San Mehat <san@google.com>

7 years agowlan: Extract generic wlan platform data from tiwlan specific header
Dmitry Shmidt [Thu, 18 Mar 2010 23:04:18 +0000]
wlan: Extract generic wlan platform data from tiwlan specific header

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

7 years agoblock: genhd: Add disk/partition specific uevent callbacks for partition info
San Mehat [Sat, 10 Oct 2009 16:35:24 +0000]
block: genhd: Add disk/partition specific uevent callbacks for partition info

For disk devices, a new uevent parameter 'NPARTS' specifies the number
of partitions detected by the kernel. Partition devices get 'PARTN' which
specifies the partitions index in the table, and 'PARTNAME', which
specifies PARTNAME specifices the partition name of a partition device

Signed-off-by: Dima Zavin <dima@android.com>

7 years agoproc: smaps: Allow smaps access for CAP_SYS_RESOURCE
San Mehat [Wed, 16 Sep 2009 19:39:10 +0000]
proc: smaps: Allow smaps access for CAP_SYS_RESOURCE

Signed-off-by: San Mehat <san@google.com>

7 years agoBluetooth: Keep master role when SCO or eSCO is active
hyungseoung.yoo [Fri, 18 Nov 2011 04:57:01 +0000]
Bluetooth: Keep master role when SCO or eSCO is active

This improves compatbility with a lot of headset / chipset
combinations. Ideally this should not be needed.

Change-Id: I8b676701e12e416aa7d60801b9d353b15d102709
Signed-off-by: hyungseoung.yoo <hyungseoung.yoo@samsung.com>
Signed-off-by: Jaikumar Ganesh <jaikumarg@android.com>

7 years agoBluetooth: Fix l2cap conn failures for ssp devices
Peter Hurley [Tue, 9 Aug 2011 20:26:55 +0000]
Bluetooth: Fix l2cap conn failures for ssp devices

Commit 330605423c fixed l2cap conn establishment for non-ssp remote
devices by not setting HCI_CONN_ENCRYPT_PEND every time conn security
is tested (which was always returning failure on any subsequent
security checks).

However, this broke l2cap conn establishment for ssp remote devices
when an ACL link was already established at SDP-level security. This
fix ensures that encryption must be pending whenever authentication
is also pending.

Change-Id: I6876ea5134e90d1f3d0f84e8ed40b92977b3df64
Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>

7 years agoBluetooth: Use the stored LTK for restabilishing security
Vinicius Costa Gomes [Thu, 7 Jul 2011 21:59:41 +0000]
Bluetooth: Use the stored LTK for restabilishing security

Now that it's possible that the exchanged key is present in
the link key list, we may be able to estabilish security with
an already existing key, without need to perform any SMP
procedure.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

7 years agoBluetooth: Allow SCO/eSCO packet type selection for outgoing SCO connections.
Nick Pelly [Thu, 11 Feb 2010 19:54:28 +0000]
Bluetooth: Allow SCO/eSCO packet type selection for outgoing SCO connections.

__u16 sco_pkt_type is introduced to struct sockaddr_sco. It allows bitwise
selection of SCO/eSCO packet types. Currently those bits are:

0x0001 HV1 may be used.
0x0002 HV2 may be used.
0x0004 HV3 may be used.
0x0008 EV3 may be used.
0x0010 EV4 may be used.
0x0020 EV5 may be used.
0x0040 2-EV3 may be used.
0x0080 3-EV3 may be used.
0x0100 2-EV5 may be used.
0x0200 3-EV5 may be used.

This is similar to the Packet Type parameter in the HCI Setup Synchronous
Connection Command, except that we are not reversing the logic on the EDR bits.
This makes the use of sco_pkt_tpye forward portable for the use case of
white-listing packet types, which we expect will be the primary use case.

If sco_pkt_type is zero, or userspace uses the old struct sockaddr_sco,
then the default behavior is to allow all packet types.

Packet type selection is just a request made to the Bluetooth chipset, and
it is up to the link manager on the chipset to negiotiate and decide on the
actual packet types used. Furthermore, when a SCO/eSCO connection is eventually
made there is no way for the host stack to determine which packet type was used
(however it is possible to get the link type of SCO or eSCO).

sco_pkt_type is ignored for incoming SCO connections. It is possible
to add this in the future as a parameter to the Accept Synchronous Connection
Command, however its a little trickier because the kernel does not
currently preserve sockaddr_sco data between userspace calls to accept().

The most common use for sco_pkt_type will be to white-list only SCO packets,
which can be done with the hci.h constant SCO_ESCO_MASK.

This patch is motivated by broken Bluetooth carkits such as the Motorolo
HF850 (it claims to support eSCO, but will actually reject eSCO connections
after 5 seconds) and the 2007/2008 Infiniti G35/37 (fails to route audio
if a 2-EV5 packet type is negiotiated). With this patch userspace can maintain
a list of compatible packet types to workaround remote devices such as these.

Based on a patch by Marcel Holtmann.

Rebased to 2.6.39.

Change-Id: Ide1c89574fa4f6f1b9218282e1af17051eb86315
Signed-off-by: Nick Pelly <npelly@google.com>

7 years agoBluetooth: Add ACL MTU, available buffers and total buffers to hci_conn_info.
Nick Pelly [Wed, 9 Dec 2009 08:15:41 +0000]
Bluetooth: Add ACL MTU, available buffers and total buffers to hci_conn_info.

This provides userspace debugging tools access to ACL flow control state.

Signed-off-by: Nick Pelly <npelly@google.com>

7 years agoBluetooth: Fallback to SCO on error code 0x10 (Connection Accept Timeout).
Nick Pelly [Tue, 22 Sep 2009 22:19:46 +0000]
Bluetooth: Fallback to SCO on error code 0x10 (Connection Accept Timeout).

This is to support the Motorola HF850 carkit which reports the error code 0x10
for an eSCO attempt, even though it advertises eSCO support. Here is the
hcidump:

2009-09-22 15:40:24.492391 < HCI Command: Setup Synchronous Connection
(0x01|0x0028) plen 17
    handle 1 voice setting 0x0060
2009-09-22 15:40:24.493002 > HCI Event: Command Status (0x0f) plen 4
    Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1
2009-09-22 15:40:30.594869 > HCI Event: Synchronous Connect Complete (0x2c)
plen 17
    status 0x10 handle 257 bdaddr 00:50:CD:20:C6:84 type eSCO
    Error: Connection Accept Timeout Exceeded

With this patch we will retry with a SCO connection, which succeeds.

Unfortunately the Moto HF850 also takes 5 seconds to return the error for the
eSCO attempt, so it will still take 5 seconds to fallback to SCO with this
patch.

Signed-off-by: Nick Pelly <npelly@google.com>

7 years agoBluetooth: Increase timeout for legacy pairing from 10 seconds to 40 seconds.
Nick Pelly [Sat, 19 Sep 2009 01:29:23 +0000]
Bluetooth: Increase timeout for legacy pairing from 10 seconds to 40 seconds.

Legacy pairing is a bit of a problem because on the incoming end it is
impossible to know pairing has begun:

2009-09-18 18:29:24.115692 > HCI Event: Connect Request (0x04) plen 10
    bdaddr 00:23:D4:04:51:7A class 0x58020c type ACL
2009-09-18 18:29:24.115966 < HCI Command: Accept Connection Request (0x01|0x0009) plen 7
    bdaddr 00:23:D4:04:51:7A role 0x00
    Role: Master
2009-09-18 18:29:24.117065 > HCI Event: Command Status (0x0f) plen 4
    Accept Connection Request (0x01|0x0009) status 0x00 ncmd 1
2009-09-18 18:29:24.282928 > HCI Event: Role Change (0x12) plen 8
    status 0x00 bdaddr 00:23:D4:04:51:7A role 0x00
    Role: Master
2009-09-18 18:29:24.291534 > HCI Event: Connect Complete (0x03) plen 11
    status 0x00 handle 1 bdaddr 00:23:D4:04:51:7A type ACL encrypt 0x00
2009-09-18 18:29:24.291839 < HCI Command: Read Remote Supported Features (0x01|0x001b) plen 2
    handle 1
2009-09-18 18:29:24.292144 > HCI Event: Page Scan Repetition Mode Change (0x20) plen 7
    bdaddr 00:23:D4:04:51:7A mode 1
2009-09-18 18:29:24.293823 > HCI Event: Command Status (0x0f) plen 4
    Read Remote Supported Features (0x01|0x001b) status 0x00 ncmd 1
2009-09-18 18:29:24.303588 > HCI Event: Max Slots Change (0x1b) plen 3
    handle 1 slots 5
2009-09-18 18:29:24.309448 > HCI Event: Read Remote Supported Features (0x0b) plen 11
    status 0x00 handle 1
    Features: 0xff 0xff 0x2d 0xfe 0x9b 0xff 0x79 0x83
2009-09-18 18:29:24.345916 < HCI Command: Remote Name Request (0x01|0x0019) plen 10
    bdaddr 00:23:D4:04:51:7A mode 2 clkoffset 0x0000
2009-09-18 18:29:24.346923 > HCI Event: Command Status (0x0f) plen 4
    Remote Name Request (0x01|0x0019) status 0x00 ncmd 1
2009-09-18 18:29:24.375793 > HCI Event: Remote Name Req Complete (0x07) plen 255
    status 0x00 bdaddr 00:23:D4:04:51:7A name 'test'
2009-09-18 18:29:34.332190 < HCI Command: Disconnect (0x01|0x0006) plen 3
    handle 1 reason 0x13

There are some mainline patches such as "Add different pairing timeout for
Legacy Pairing" but they do not address the HCI sequence above.

I think the real solution is to avoid using CreateBond(), and instead make
the profile connection immediately. This way both sides will use a longer
timeout because there is a higher level connection in progress, and we will
not end up with the useless HCI sequence above.

Signed-off-by: Nick Pelly <npelly@google.com>

7 years agoBluetooth: Do not attempt to send dlci disconnect when in BT_CONFIG.
Nick Pelly [Thu, 9 Jul 2009 19:23:44 +0000]
Bluetooth: Do not attempt to send dlci disconnect when in BT_CONFIG.

This fixes a bug where shutdown() and close() on a rfcomm socket during ACL
connection would not cause HCI Create Connection Cancel.

Signed-off-by: Nick Pelly <npelly@google.com>

7 years agoserial_core: Add wake_peer uart operation
San Mehat [Thu, 30 Jul 2009 03:21:28 +0000]
serial_core: Add wake_peer uart operation

Add wake_peer which is called before starting UART TX. The idea here
is to provide a mechanism where we can wakeup our peer before sending
data.

Change-Id: I42e0779b635f64ca99184b45d5b028de80197491
Signed-off-by: San Mehat <san@google.com>

7 years agorfkill: Introduce CONFIG_RFKILL_PM and use instead of CONFIG_PM to power down
Nick Pelly [Fri, 5 Dec 2008 01:37:05 +0000]
rfkill: Introduce CONFIG_RFKILL_PM and use instead of CONFIG_PM to power down

Some platforms do not want to power down rfkill devices on suspend.

Change-Id: I62a11630521c636d54a4a02ab9037a43435925f5
Signed-off-by: Nick Pelly <npelly@google.com>

7 years agowl127x-rfkill: Add power control driver for TI WL127X Bluetooth chips
Nick Pelly [Thu, 11 Jun 2009 17:49:48 +0000]
wl127x-rfkill: Add power control driver for TI WL127X Bluetooth chips

Signed-off-by: Nick Pelly <npelly@google.com>

7 years agoprintk: update log_buf_copy for 3.3
Colin Cross [Thu, 2 Feb 2012 00:02:23 +0000]
printk: update log_buf_copy for 3.3

logbuf_lock is a raw spinlock in 3.3, replace spin_(un)lock_irq
with raw_spin_(un)lock_irq.

Change-Id: I4b13c6a34bcbcbe95ef28ac3aec0528deef7fa9d
Signed-off-by: Colin Cross <ccross@android.com>

7 years agokernel: printk: Add non exported function for clearing the log ring buffer
San Mehat [Thu, 6 Aug 2009 17:25:21 +0000]
kernel: printk: Add non exported function for clearing the log ring buffer

Signed-off-by: San Mehat <san@google.com>

7 years agoprintk: Fix log_buf_copy termination.
Arve Hjønnevåg [Tue, 15 Apr 2008 04:35:25 +0000]
printk: Fix log_buf_copy termination.

If idx was non-zero and the log had wrapped, len did not get truncated
to stop at the last byte written to the log.

7 years agoRevert "printk: remove unused code from kernel/printk.c"
Arve Hjønnevåg [Fri, 16 Jan 2009 03:07:27 +0000]
Revert "printk: remove unused code from kernel/printk.c"

This reverts commit acff181d3574244e651913df77332e897b88bff4.

7 years agonet: Replace AID_NET_RAW checks with capable(CAP_NET_RAW).
Chia-chi Yeh [Tue, 30 Jun 2009 03:23:04 +0000]
net: Replace AID_NET_RAW checks with capable(CAP_NET_RAW).

Signed-off-by: Chia-chi Yeh <chiachi@android.com>

7 years agosecurity: Add AID_NET_RAW and AID_NET_ADMIN capability check in cap_capable().
Chia-chi Yeh [Thu, 18 Jun 2009 23:15:05 +0000]
security: Add AID_NET_RAW and AID_NET_ADMIN capability check in cap_capable().

Signed-off-by: Chia-chi Yeh <chiachi@android.com>

7 years agonet: PPPoPNS and PPPoLAC fixes.
Chia-chi Yeh [Fri, 12 Jun 2009 18:29:04 +0000]
net: PPPoPNS and PPPoLAC fixes.

net: Fix a bitmask in PPPoPNS and rename constants in PPPoPNS and PPPoLAC.

Signed-off-by: Chia-chi Yeh <chiachi@android.com>

net: Fix a potential deadlock while releasing PPPoLAC/PPPoPNS socket.

PPP driver guarantees that no thread will be executing start_xmit() after
returning from ppp_unregister_channel(). To achieve this, a spinlock (downl)
is used. In pppolac_release(), ppp_unregister_channel() is called after sk_udp
is locked. At the same time, another thread might be running in pppolac_xmit()
with downl. Thus a deadlock will occur if the thread tries to lock sk_udp.
The same situation might happen on sk_raw in pppopns_release().

Signed-off-by: Chia-chi Yeh <chiachi@android.com>

net: Force PPPoLAC and PPPoPNS to bind an interface before creating PPP channel.

It is common to manipulate the routing table after configuring PPP device.
Since both PPPoLAC and PPPoPNS run over IP, care must be taken to make sure
that there is no loop in the routing table.
Although this can be done by adding a host route, it might still cause
problems when the interface is down for some reason.

To solve this, this patch forces both drivers to bind an interface before
creating PPP channel, so the system will not re-route the tunneling sockets
to another interface when the original one is down. Another benefit is that
now the host route is no longer required, so there is no need to remove it
when PPP channel is closed.

Signed-off-by: Chia-chi Yeh <chiachi@android.com>

net: Avoid sleep-inside-spinlock in PPPoLAC and PPPoPNS.

Since recv() and xmit() are called with a spinlock held, routines which might
sleep cannot be used. This issue is solved by following changes:

Incoming packets are now processed in backlog handler, recv_core(), instead of
recv(). Since backlog handler is always executed with socket spinlock held, the
requirement of ppp_input() is still satisfied.

Outgoing packets are now processed in workqueue handler, xmit_core(), instead of
xmit(). Note that kernel_sendmsg() is no longer used to prevent touching dead
sockets.

In release(), lock_sock() and pppox_unbind_sock() ensure that no thread is in
recv_core() or xmit(). Then socket handlers are restored before release_sock(),
so no packets will leak in backlog queue.

Signed-off-by: Chia-chi Yeh <chiachi@android.com>

net: Fix msg_iovlen in PPPoLAC and PPPoPNS.

Although any positive value should work (which is always true in both drivers),
the correct value should be 1.

Signed-off-by: Chia-chi Yeh <chiachi@android.com>

7 years agonet: add PPP on PPTP Network Server (PPPoPNS) driver.
Chia-chi Yeh [Thu, 11 Jun 2009 17:09:30 +0000]
net: add PPP on PPTP Network Server (PPPoPNS) driver.

Signed-off-by: Chia-chi Yeh <chiachi@android.com>

ppopns: dont include px_proto define in if_pppopns.h

Change-Id: I27e687667db5b45182562f4a517a2e6cec6b1350
Signed-off-by: Dima Zavin <dima@android.com>

7 years agonet: add PPP on L2TP Access Concentrator (PPPoLAC) driver.
Chia-chi Yeh [Thu, 7 May 2009 20:02:40 +0000]
net: add PPP on L2TP Access Concentrator (PPPoLAC) driver.

Change-Id: I3ae3ee7520951ae24269db0ef2898c6455cf6bcc
Signed-off-by: Chia-chi Yeh <chiachi@android.com>

ppolac: dont include px_proto define in if_pppolac.h

Change-Id: I55bc9cf91ea0e9e8f7bf5d6e241d188e1269343a
Signed-off-by: Dima Zavin <dima@android.com>

7 years agofs: yaffs: don't force YAFFS_TRACE_ALWAYS for all trace levels
Dima Zavin [Thu, 6 Jan 2011 00:03:21 +0000]
fs: yaffs: don't force YAFFS_TRACE_ALWAYS for all trace levels

Change-Id: I9ddc676382d26aef7f12145d412fe670cb486317
Signed-off-by: Dima Zavin <dima@android.com>

7 years agofs: yaffs: Import yaffs from Thu Dec 23 13:31:37 2010 +1300
Arve Hjønnevåg [Wed, 19 May 2010 03:35:30 +0000]
fs: yaffs: Import yaffs from Thu Dec 23 13:31:37 2010 +1300

commit ddf33fed15c2376bfb602d62dd018c63fce60df8
Author: Timothy Manning <tfhmanning@gmail.com>
Date:   Thu Dec 23 13:31:37 2010 +1300

    yaffs updated direct/timothy_tests/quick_tests
Signed-off-by: Timothy Manning <tfhmanning@gmail.com>

Change-Id: I5bbe5a05277bdf8a6fe188bbe4c77725b3fa2aae
Signed-off-by: Dima Zavin <dima@android.com>

7 years agofs: block_dump: Don't display inode changes if block_dump < 2
San Mehat [Sun, 22 Mar 2009 01:48:54 +0000]
fs: block_dump: Don't display inode changes if block_dump < 2

Signed-off-by: San Mehat <san@android.com>

7 years agotiwlan: Add abstract wifi control functions support
Dmitry Shmidt [Thu, 18 Dec 2008 17:55:20 +0000]
tiwlan: Add abstract wifi control functions support

7 years agommc: Set suspend/resume bus operations if CONFIG_PM_RUNTIME is used
Dmitry Shmidt [Sat, 17 Dec 2011 01:52:18 +0000]
mmc: Set suspend/resume bus operations if CONFIG_PM_RUNTIME is used

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

7 years agommc: block: Improve logging of handling emmc timeouts
Ken Sumrall [Wed, 26 Oct 2011 01:16:58 +0000]
mmc: block: Improve logging of handling emmc timeouts

Add some logging to make it clear just how the emmc timeout
was handled.

Change-Id: Id33fd28d8b9778dc4e85db829e2637a328eddab4
Signed-off-by: Ken Sumrall <ksumrall@android.com>

7 years agommc: core: host: only use wakelock for detect work
Colin Cross [Thu, 8 Sep 2011 00:28:58 +0000]
mmc: core: host: only use wakelock for detect work

There is no need to take a wakelock for delayed lazy disable
work, it will be cancelled in the suspend handler and force
disabled.  Only take the wakelock when the detect work is
queued, and make sure to drop the wakelock if the work is
cancelled.

Change-Id: I1e507a5f98848954ea21d45e23b6192c3132a349
Signed-off-by: Colin Cross <ccross@android.com>

7 years agoARM: Add 'card_present' state to mmc_platfrom_data
Dmitry Shmidt [Tue, 3 May 2011 18:05:04 +0000]
ARM: Add 'card_present' state to mmc_platfrom_data

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

7 years agoRecreate asm/mach/mmc.h include file
Colin Cross [Sat, 9 Apr 2011 05:20:53 +0000]
Recreate asm/mach/mmc.h include file

Change-Id: I9f10244b0603f7842b8504a16124d40dc4a71ed2
Signed-off-by: Colin Cross <ccross@android.com>

7 years agommc: Fix pm_notifier obeying deferred resume
Dmitry Shmidt [Thu, 14 Oct 2010 22:20:21 +0000]
mmc: Fix pm_notifier obeying deferred resume

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

7 years agommc: Add "ignore mmc pm notify" functionality
Dmitry Shmidt [Thu, 7 Oct 2010 21:39:16 +0000]
mmc: Add "ignore mmc pm notify" functionality

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

7 years agommc: sdio: Fix enable_hs and enable_wide in sdio_reset_comm()
Dmitry Shmidt [Thu, 7 Oct 2010 00:25:02 +0000]
mmc: sdio: Fix enable_hs and enable_wide in sdio_reset_comm()

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

7 years agommc: core: Release delayed mmc work wakelock after deep disable
San Mehat [Tue, 9 Feb 2010 20:08:48 +0000]
mmc: core: Release delayed mmc work wakelock after deep disable

Signed-off-by: San Mehat <san@google.com>

7 years agommc: sdio: Add high speed support to sdio_reset_comm()
Daniel Chen [Wed, 9 Dec 2009 17:45:36 +0000]
mmc: sdio: Add high speed support to sdio_reset_comm()

Signed-off-by: San Mehat <san@google.com>

7 years agommc: sdio: Claim host in sdio_reset_comm()
Dmitry Shmidt [Wed, 29 Jul 2009 17:22:03 +0000]
mmc: sdio: Claim host in sdio_reset_comm()

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

7 years agommc: mmcblk: Add support for deferred SD bus resume
San Mehat [Thu, 30 Jul 2009 15:21:19 +0000]
mmc: mmcblk: Add support for deferred SD bus resume

Signed-off-by: San Mehat <san@google.com>

mmc: card: Add MMC_BLOCK_DEFERRED_RESUME option to Kconfig

Signed-off-by: San Mehat <san@google.com>

7 years agommc: core: Add deferred bus resume policy.
San Mehat [Thu, 30 Jul 2009 14:55:28 +0000]
mmc: core: Add deferred bus resume policy.

A card driver can now specify that the underlying bus should *not*
auto-resume with the rest of the system. This is useful for reducing resume
latency as well as saving power when the card driver is not using the
bus. In the future, we'll add support for manual suspend

Signed-off-by: San Mehat <san@google.com>

7 years agommc: core: Hold a wake lock accross delayed work + mmc rescan
San Mehat [Mon, 23 Mar 2009 19:20:37 +0000]
mmc: core: Hold a wake lock accross delayed work + mmc rescan

Signed-off-by: San Mehat <san@android.com>

mmc: core: Rework mmc_delayed_work wakelock so that the wakelock is only extended if a card is added or removed.

Signed-off-by: San Mehat <san@google.com>

7 years agommc: sd: Add retries in re-detection
San Mehat [Thu, 4 Dec 2008 19:18:00 +0000]
mmc: sd: Add retries in re-detection

Signed-off-by: San Mehat <san@android.com>

mmc: sd: Remove debugging printk

Signed-off-by: Dima Zavin <dima@android.com>

7 years agommc: sd: When resuming, try a little harder to init the card
San Mehat [Mon, 1 Dec 2008 16:52:34 +0000]
mmc: sd: When resuming, try a little harder to init the card

Signed-off-by: San Mehat <san@android.com>

7 years agommc: Add new API call 'sdio_reset_comm' for resetting communication with an SDIO...
San Mehat [Thu, 15 May 2008 16:15:37 +0000]
mmc: Add new API call 'sdio_reset_comm' for resetting communication with an SDIO device

Signed-off-by: San Mehat <san@android.com>

7 years agotrout: Add functions for WiFi
Dmitry Shmidt [Tue, 11 Nov 2008 19:22:38 +0000]
trout: Add functions for WiFi

7 years agommc: Add concept of an 'embedded' SDIO device.
San Mehat [Mon, 14 Apr 2008 22:22:49 +0000]
mmc: Add concept of an 'embedded' SDIO device.

This is required to support chips which use SDIO for signaling/
communication but do not implement the various card enumeration registers
as required for full SD / SDIO cards.

mmc: sdio: Fix bug where we're freeing the CIS tables we never allocated when using EMBEDDED_SDIO
mmc: Add max_blksize to embedded SDIO data

Signed-off-by: San Mehat <san@google.com>

7 years agommc: sd: Add new CONFIG_MMC_PARANOID_SD_INIT for enabling retries during SD detection
San Mehat [Tue, 11 Nov 2008 17:35:36 +0000]
mmc: sd: Add new CONFIG_MMC_PARANOID_SD_INIT for enabling retries during SD detection

Signed-off-by: San Mehat <san@google.com>

7 years agommc: Add status IRQ and status callback function to mmc platform data
San Mehat [Tue, 11 Nov 2008 00:29:50 +0000]
mmc: Add status IRQ and status callback function to mmc platform data

Signed-off-by: San Mehat <san@google.com>

7 years agoInput: synaptics_i2c_rmi: Driver for Synaptics Touchscreens using RMI over I2C.
Arve Hjønnevåg [Wed, 22 Aug 2007 04:56:46 +0000]
Input: synaptics_i2c_rmi: Driver for Synaptics Touchscreens using RMI over I2C.

Signed-off-by: Arve Hjønnevåg <arve@android.com>

Input: synaptics_i2c_rmi: disable_irq -> disable_irq_nosync

Also remove duplicate swap macro

Change-Id: I77266431ba5c267a5d92c4bdc2f127a5297065a8
Signed-off-by: Arve Hjønnevåg <arve@android.com>

7 years agoinput: keychord: Add keychord driver
Mike Lockwood [Mon, 15 Dec 2008 19:51:56 +0000]
input: keychord: Add keychord driver

This driver allows userspace to receive notification when client
specified key combinations are pressed.
The client opens /dev/keychord and writes a list of keychords
for the driver to monitor.
The client then reads or polls /dev/keychord for notifications.
A client specified ID for the keychord is returned from read()
when a keychord press is detected.

Signed-off-by: Mike Lockwood <lockwood@android.com>

keychord: fix to build without CONFIG_PREEMPT

Change-Id: I911f13aeda4224b6fa57863bc7e8972fec8837fb

7 years agoinput: Add keyreset driver.
Arve Hjønnevåg [Sat, 22 Nov 2008 05:47:23 +0000]
input: Add keyreset driver.

Add a platform device in the board file to specify a reset key-combo.
The first time the key-combo is detected a work function that syncs
the filesystems is scheduled. If all the keys are released and then
pressed again, it calls panic. Reboot on panic should be set for
this to work.

Change-Id: I9d54283ca1fba45e4b1ae1a407524cdda8171143
Signed-off-by: Arve Hjønnevåg <arve@android.com>

7 years agoinput: misc: gpio_event: remove early suspend
Colin Cross [Thu, 2 Feb 2012 04:26:28 +0000]
input: misc: gpio_event: remove early suspend

Remove the early suspend handler.  Leave the suspend functions
for now, they should eventually get called through a userspace
interface.x

Change-Id: I67f9dafe32fe32577bab93c42b95824db96c215c
Signed-off-by: Colin Cross <ccross@android.com>

7 years agoInput: Generic GPIO Input device.
Arve Hjønnevåg [Thu, 16 Oct 2008 01:23:47 +0000]
Input: Generic GPIO Input device.

Supports keyboard matrixces, direct inputs, direct outputs and axes connected to gpios.

Change-Id: I5e921e6e3a1cc169316ee3b665f4cc21b5735114
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Nick Pelly <npelly@google.com>

7 years agoGrants system server access to /proc/<pid>/oom_adj for Android applications.
Mike Chan [Thu, 24 Apr 2008 17:22:26 +0000]
Grants system server access to /proc/<pid>/oom_adj for Android applications.

Signed-off-by: Brian Swetland <swetland@google.com>

7 years agoFAT: Add new ioctl VFAT_IOCTL_GET_VOLUME_ID for reading the volume ID.
Mike Lockwood [Sat, 15 Mar 2008 17:29:36 +0000]
FAT: Add new ioctl VFAT_IOCTL_GET_VOLUME_ID for reading the volume ID.

Signed-off-by: Brian Swetland <swetland@google.com>

7 years agomisc: uidstat: Adding uid stat driver to collect network statistics.
Mike Chan [Wed, 7 Jan 2009 19:40:42 +0000]
misc: uidstat: Adding uid stat driver to collect network statistics.

Signed-off-by: Mike Chan <mike@android.com>

7 years agosysfs_net_ipv4: Add sysfs-based knobs for controlling TCP window size
Robert Love [Thu, 31 Jul 2008 15:12:44 +0000]
sysfs_net_ipv4: Add sysfs-based knobs for controlling TCP window size

Add a family of knobs to /sys/kernel/ipv4 for controlling the TCP window size:

tcp_wmem_min
tcp_wmem_def
tcp_wmem_max
tcp_rmem_min
tcp_rmem_def
tcp_rmem_max

This six values mirror the sysctl knobs in /proc/sys/net/ipv4/tcp_wmem and
/proc/sys/net/ipv4/tcp_rmem.

Sysfs, unlike sysctl, allows us to set and manage the files' permissions and
owners.

Signed-off-by: Robert Love <rlove@google.com>

7 years agonet: socket ioctl to reset connections matching local address
Robert Love [Mon, 12 May 2008 21:08:29 +0000]
net: socket ioctl to reset connections matching local address

Introduce a new socket ioctl, SIOCKILLADDR, that nukes all sockets
bound to the same local address. This is useful in situations with
dynamic IPs, to kill stuck connections.

Signed-off-by: Brian Swetland <swetland@google.com>

net: fix tcp_v4_nuke_addr

Signed-off-by: Dima Zavin <dima@android.com>

net: ipv4: Fix a spinlock recursion bug in tcp_v4_nuke.

We can't hold the lock while calling to tcp_done(), so we drop
it before calling. We then have to start at the top of the chain again.

Signed-off-by: Dima Zavin <dima@android.com>

net: ipv4: Fix race in tcp_v4_nuke_addr().

To fix a recursive deadlock in 2.6.29, we stopped holding the hash table lock
across tcp_done() calls. This fixed the deadlock, but introduced a race where
the socket could die or change state.

Fix: Before unlocking the hash table, we grab a reference to the socket. We
can then unlock the hash table without risk of the socket going away. We then
lock the socket, which is safe because it is pinned. We can then call
tcp_done() without recursive deadlock and without race. Upon return, we unlock
the socket and then unpin it, killing it.

Change-Id: Idcdae072b48238b01bdbc8823b60310f1976e045
Signed-off-by: Robert Love <rlove@google.com>
Acked-by: Dima Zavin <dima@android.com>

ipv4: disable bottom halves around call to tcp_done().

Signed-off-by: Robert Love <rlove@google.com>
Signed-off-by: Colin Cross <ccross@android.com>

ipv4: Move sk_error_report inside bh_lock_sock in tcp_v4_nuke_addr

When sk_error_report is called, it wakes up the user-space thread, which then
calls tcp_close.  When the tcp_close is interrupted by the tcp_v4_nuke_addr
ioctl thread running tcp_done, it leaks 392 bytes and triggers a WARN_ON.

This patch moves the call to sk_error_report inside the bh_lock_sock, which
matches the locking used in tcp_v4_err.

Signed-off-by: Colin Cross <ccross@android.com>

7 years agoParanoid network.
Robert Love [Wed, 15 Oct 2008 19:35:44 +0000]
Paranoid network.

With CONFIG_ANDROID_PARANOID_NETWORK, require specific uids/gids to instantiate
network sockets.

Signed-off-by: Robert Love <rlove@google.com>

paranoid networking: Use in_egroup_p() to check group membership

The previous group_search() caused trouble for partners with module builds.
in_egroup_p() is also cleaner.

Signed-off-by: Nick Pelly <npelly@google.com>

Fix 2.6.29 build.

Signed-off-by: Arve Hjønnevåg <arve@android.com>

net: Fix compilation of the IPv6 module

Fix compilation of the IPv6 module -- current->euid does not exist anymore,
current_euid() is what needs to be used.

Signed-off-by: Steinar H. Gunderson <sesse@google.com>

7 years agoashmem: Add shmem_set_file to mm/shmem.c
John Stultz [Fri, 16 Dec 2011 02:51:04 +0000]
ashmem: Add shmem_set_file to mm/shmem.c

NOT FOR STAGING
This patch re-adds the original shmem_set_file to mm/shmem.c
and converts ashmem.c back to using it.

CC: Brian Swetland <swetland@google.com>
CC: Colin Cross <ccross@android.com>
CC: Arve Hjønnevåg <arve@android.com>
CC: Dima Zavin <dima@android.com>
CC: Robert Love <rlove@google.com>
CC: Greg KH <greg@kroah.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>

7 years agoAdd android_aid.h
Robert Love [Wed, 15 Oct 2008 19:34:49 +0000]
Add android_aid.h

Add <linux/android_aid.h>, our mapping of AID defines to gid numbers.

Signed-off-by: Robert Love <rlove@google.com>

7 years agoswitch: switch class and GPIO drivers.
Mike Lockwood [Tue, 14 Oct 2008 16:50:16 +0000]
switch: switch class and GPIO drivers.

switch: Export symbol switch_set_state.

Signed-off-by: Mike Lockwood <lockwood@android.com>

switch: gpio: Don't call request_irq with interrupts disabled

Signed-off-by: Arve Hjønnevåg <arve@android.com>

switch: Use device_create instead of device_create_drvdata.

device_create_drvdata is obsolete.

Signed-off-by: Arve Hjønnevåg <arve@android.com>

switch_gpio: Add missing #include <linux/interrupt.h>

Change-Id: I6c397e41bbe1457162cc69e31a29db5d9f76fccb
Signed-off-by: Mike Lockwood <lockwood@android.com>

7 years agopower_supply: Hold a wake_lock while power supply change notifications are pending
Arve Hjønnevåg [Tue, 22 Sep 2009 00:26:47 +0000]
power_supply: Hold a wake_lock while power supply change notifications are pending

When connecting usb or the charger the device would often go back to sleep
before the charge led and screen turned on.

Change-Id: I01def6d86ddece0d4e31d2a91d176ed0975b6b9d
Signed-off-by: Arve Hjønnevåg <arve@android.com>

7 years agoInput: Use monotonic time for event time stamps.
Arve Hjønnevåg [Fri, 17 Oct 2008 22:28:08 +0000]
Input: Use monotonic time for event time stamps.

Since wall time can jump backwards, it cannot be used to determine if one
event occured before another or for how long a key was pressed.

Signed-off-by: Arve Hjønnevåg <arve@android.com>

7 years agoInput: evdev - Add ioctl to block suspend while event queue is not empty.
Arve Hjønnevåg [Fri, 17 Oct 2008 22:20:55 +0000]
Input: evdev - Add ioctl to block suspend while event queue is not empty.

Add an ioctl, EVIOCSSUSPENDBLOCK, to enable a wakelock that will block
suspend while the event queue is not empty. This allows userspace code to
process input events while the device appears to be asleep.

The current code holds the wakelock for up 5 seconds for every input
device and client. This can prevent suspend if sensor with a high data
rate is active, even when that sensor is not capable of waking the
device once it is suspended.

Change-Id: I624d66ef30a0b3abb543685c343382b8419b42b9
Signed-off-by: Arve Hjønnevåg <arve@android.com>

7 years agoledtrig-sleep: Add led trigger for sleep debugging.
Arve Hjønnevåg [Mon, 31 Mar 2008 04:47:13 +0000]
ledtrig-sleep: Add led trigger for sleep debugging.

Signed-off-by: Brian Swetland <swetland@google.com>

7 years agoPM: wakelock: Don't dump unfrozen task list when aborting try_to_freeze_tasks after...
Arve Hjønnevåg [Wed, 2 Dec 2009 04:54:37 +0000]
PM: wakelock: Don't dump unfrozen task list when aborting try_to_freeze_tasks after less than one second

Change-Id: Ib2976e5b97a5ee4ec9abd4d4443584d9257d0941
Signed-off-by: Arve Hjønnevåg <arve@android.com>

7 years agoPM: wakelock: Abort task freezing if a wake lock is held.
Arve Hjønnevåg [Tue, 14 Oct 2008 23:02:39 +0000]
PM: wakelock: Abort task freezing if a wake lock is held.

Avoids a problem where the device sometimes hangs for 20 seconds
before the screen is turned on.

7 years agoPM: Add user-space wake lock api.
Arve Hjønnevåg [Fri, 10 Oct 2008 04:01:46 +0000]
PM: Add user-space wake lock api.

This adds /sys/power/wake_lock and /sys/power/wake_unlock.
Writing a string to wake_lock creates a wake lock the
first time is sees a string and locks it. Optionally, the
string can be followed by a timeout.
To unlock the wake lock, write the same string to wake_unlock.

Change-Id: I66c6e3fe6487d17f9c2fafde1174042e57d15cd7

7 years agoPM: Implement wakelock api.
Arve Hjønnevåg [Wed, 10 Sep 2008 05:14:34 +0000]
PM: Implement wakelock api.

PM: wakelock: Replace expire work with a timer

The expire work function did not work in the normal case.

Signed-off-by: Arve Hjønnevåg <arve@android.com>

7 years agoPM: Add wake lock api.
Arve Hjønnevåg [Sat, 27 Sep 2008 05:10:56 +0000]
PM: Add wake lock api.

7 years ago[docs] android: Add android config documentation to boot framework.
Mike Chan [Thu, 22 Jan 2009 20:23:32 +0000]
[docs] android: Add android config documentation to boot framework.

Signed-off-by: Mike Chan <mike@android.com>

7 years ago[ARM] Optionally flush entire dcache from v6_dma_flush_range
Arve Hjønnevåg [Wed, 10 Jun 2009 03:17:45 +0000]
[ARM] Optionally flush entire dcache from v6_dma_flush_range

If CACHE_FLUSH_RANGE_LIMIT is defined, then the entire dcache will
be flushed if the requested range is larger than this limit.

Change-Id: I29277d645a9d6716b1952cf3b870c78496261dd0
Signed-off-by: Arve Hjønnevåg <arve@android.com>

7 years agomm: Add min_free_order_shift tunable.
Arve Hjønnevåg [Tue, 17 Feb 2009 22:51:02 +0000]
mm: Add min_free_order_shift tunable.

By default the kernel tries to keep half as much memory free at each
order as it does for one order below. This can be too agressive when
running without swap.

Change-Id: I5efc1a0b50f41ff3ac71e92d2efd175dedd54ead
Signed-off-by: Arve Hjønnevåg <arve@android.com>

7 years ago[ARM] avoid mis-detecting some V7 cores in the decompressor
Brian Swetland [Tue, 27 Jan 2009 01:15:49 +0000]
[ARM] avoid mis-detecting some V7 cores in the decompressor

This allows kernel decompress to happen nearly instantly instead
of taking over 20 seconds.

Signed-off-by: Brian Swetland <swetland@google.com>

7 years ago[ARM] armv6 dcc tty driver
Arve Hjønnevåg [Sun, 2 Dec 2007 02:34:14 +0000]
[ARM] armv6 dcc tty driver

Signed-off-by: Brian Swetland <swetland@google.com>
Signed-off-by: Arve Hjønnevåg <arve@android.com>

7 years agoARM: Make low-level printk work
Tony Lindgren [Mon, 9 May 2005 21:10:26 +0000]
ARM: Make low-level printk work

Makes low-level printk work.

Signed-off-by: Tony Lindgren <tony@atomide.com>

7 years agocgroup: Remove call to synchronize_rcu in cgroup_attach_task
Colin Cross [Wed, 24 Nov 2010 05:37:04 +0000]
cgroup: Remove call to synchronize_rcu in cgroup_attach_task

synchronize_rcu can be very expensive, averaging 100 ms in
some cases.  In cgroup_attach_task, it is used to prevent
a task->cgroups pointer dereferenced in an RCU read side
critical section from being invalidated, by delaying the
call to put_css_set until after an RCU grace period.

To avoid the call to synchronize_rcu, make the put_css_set
call rcu-safe by moving the deletion of the css_set links
into free_css_set_work, scheduled by the rcu callback
free_css_set_rcu.

The decrement of the cgroup refcount is no longer
synchronous with the call to put_css_set, which can result
in the cgroup refcount staying positive after the last call
to cgroup_attach_task returns.  To allow the cgroup to be
deleted with cgroup_rmdir synchronously after
cgroup_attach_task, have rmdir check the refcount of all
associated css_sets.  If cgroup_rmdir is called on a cgroup
for which the css_sets all have refcount zero but the
cgroup refcount is nonzero, reuse the rmdir waitqueue to
block the rmdir until free_css_set_work is called.

Signed-off-by: Colin Cross <ccross@android.com>

Conflicts:

kernel/cgroup.c

Change-Id: I3b3f245c8f5e2e5d33f1e54178b2bb6ef10a0817

7 years agocgroup: Add generic cgroup subsystem permission checks
Colin Cross [Wed, 13 Jul 2011 02:53:24 +0000]
cgroup: Add generic cgroup subsystem permission checks

Rather than using explicit euid == 0 checks when trying to move
tasks into a cgroup via CFS, move permission checks into each
specific cgroup subsystem. If a subsystem does not specify a
'allow_attach' handler, then we fall back to doing our checks
the old way.

Use the 'allow_attach' handler for the 'cpu' cgroup to allow
non-root processes to add arbitrary processes to a 'cpu' cgroup
if it has the CAP_SYS_NICE capability set.

This version of the patch adds a 'allow_attach' handler instead
of reusing the 'can_attach' handler.  If the 'can_attach' handler
is reused, a new cgroup that implements 'can_attach' but not
the permission checks could end up with no permission checks
at all.

Change-Id: Icfa950aa9321d1ceba362061d32dc7dfa2c64f0c
Original-Author: San Mehat <san@google.com>
Signed-off-by: Colin Cross <ccross@android.com>

7 years agocgroup: Set CGRP_RELEASABLE when adding to a cgroup
Colin Cross [Wed, 24 Nov 2010 05:37:03 +0000]
cgroup: Set CGRP_RELEASABLE when adding to a cgroup

Changes the meaning of CGRP_RELEASABLE to be set on any cgroup
that has ever had a task or cgroup in it, or had css_get called
on it.  The bit is set in cgroup_attach_task, cgroup_create,
and __css_get.  It is not necessary to set the bit in
cgroup_fork, as the task is either in the root cgroup, in
which can never be released, or the task it was forked from
already set the bit in croup_attach_task.

Signed-off-by: Colin Cross <ccross@android.com>

7 years agoARM: allow the kernel text section to be made read-only
Colin Cross [Fri, 12 Aug 2011 00:15:24 +0000]
ARM: allow the kernel text section to be made read-only

This patch implements CONFIG_DEBUG_RODATA, allowing
the kernel text section to be marked read-only in
order to catch bugs that write over the kernel.  This
requires mapping the kernel code, plus up to 4MB, using
pages instead of sections, which can increase TLB
pressure.

The kernel is normally mapped using 1MB section entries
in the first level page table, and the first level page
table is copied into every mm.  This prevents marking
the kernel text read-only, because the 1MB section
entries are too large granularity to separate the init
section, which is reused as read-write memory after
init, and the kernel text section.  Also, the top level
page table for every process would need to be updated,
which is not possible to do safely and efficiently on SMP.

To solve both problems, allow alloc_init_pte to overwrite
an existing section entry with a fully-populated second
level page table.  When CONFIG_DEBUG_RODATA is set, all
the section entries that overlap the kernel text section
will be replaced with page mappings.  The kernel always
uses a pair of 2MB-aligned 1MB sections, so up to 2MB
of memory before and after the kernel may end up page
mapped.

When the top level page tables are copied into each
process the second level page tables are not copied,
leaving a single second level page table that will
affect all processes on all cpus.  To mark a page
read-only, the second level page table is located using
the pointer in the first level page table for the
current process, and the supervisor RO bit is flipped
atomically.  Once all pages have been updated, all TLBs
are flushed to ensure the changes are visible on all
cpus.

If CONFIG_DEBUG_RODATA is not set, the kernel will be
mapped using the normal 1MB section entries.

Change-Id: I94fae337f882c2e123abaf8e1082c29cd5d483c6
Signed-off-by: Colin Cross <ccross@android.com>

7 years agobinder: fix warning
Colin Cross [Wed, 1 Feb 2012 23:58:57 +0000]
binder: fix warning

Convert binder_debug_no_lock to a bool to fix a warning:
drivers/staging/android/binder.c:107: warning: return from incompatible
pointer type

Change-Id: I3ce97c1394cff7903d8bc9191f479bf55915920f
Signed-off-by: Colin Cross <ccross@android.com>

7 years agoram_console: set CON_ANYTIME console flag
Dima Zavin [Thu, 12 Jan 2012 23:55:25 +0000]
ram_console: set CON_ANYTIME console flag

We want to ensure that we get all the console messages, even ones
that occur while the printing CPU is not yet online.

Change-Id: I1d2694d05ac9415669a92f38efdd8e71c927705b
Signed-off-by: Dima Zavin <dima@android.com>

7 years agoARM: smp: implement arch_trigger_all_cpus_backtrace using IPI
Dima Zavin [Tue, 18 Oct 2011 23:59:54 +0000]
ARM: smp: implement arch_trigger_all_cpus_backtrace using IPI

Based on a rough patch by frank.rowand@am.sony.com

Since ARM doesn't have an NMI (fiq's are not always available),
send an IPI to all other CPUs (current cpu prints the stack directly)
to capture a backtrace.

Change-Id: I8b163c8cec05d521b433ae133795865e8a33d4e2
Signed-off-by: Dima Zavin <dima@android.com>

7 years agoARM: cache-l2x0: update workaround for PL310 errata 727915
Colin Cross [Wed, 14 Sep 2011 22:59:50 +0000]
ARM: cache-l2x0: update workaround for PL310 errata 727915

ARM errata 727915 for PL310 has been updated to include a new
workaround required for PL310 r2p0 for l2x0_flush_all, which also
affects l2x0_clean_all in my testing.  For r2p0, clean or flush
each set/way individually.  For r3p0 or greater, use the debug
register for cleaning and flushing.

Requires exporting the cache_id, sets and ways detected in the
init function for later use.

Change-Id: I215055cbe5dc7e4e8184fb2befc4aff672ef0a12
Signed-off-by: Colin Cross <ccross@android.com>

7 years agocpuidle: governor: menu: don't use loadavg
Colin Cross [Mon, 19 Sep 2011 23:42:44 +0000]
cpuidle: governor: menu: don't use loadavg

get_loadavg doesn't work as intended.  According to the comments, it
should be returning an average over a few seconds, but it is actually
reading the instantaneous load.  It is almost always returning 0, but
can sometimes, depending on workload, spike very high into the hundreds
even when the average cpu load is under 10%.  Disable it for now.

Change-Id: I63ed100af1cf9463549939b8113ed83676db5f86
Signed-off-by: Colin Cross <ccross@android.com>

7 years agoARM: add option to flush console before reboot
Dima Zavin [Tue, 23 Aug 2011 22:56:50 +0000]
ARM: add option to flush console before reboot

If the console_lock was held while the system was rebooted, the messages
in the temporary logbuffer would not have propogated to all the console
drivers.

This force releases the console lock if it failed to be acquired.

Change-Id: I193dcf7b968be17966833e50b8b8bc70d5d9fe89
Signed-off-by: Dima Zavin <dima@android.com>

7 years agopower: Add option to log time spent in suspend
Colin Cross [Tue, 19 Jul 2011 19:33:45 +0000]
power: Add option to log time spent in suspend

Prints the time spent in suspend in the kernel log, and
keeps statistics on the time spent in suspend in
/sys/kernel/debug/suspend_time

Change-Id: Ia6b9ebe4baa0f7f5cd211c6a4f7e813aefd3fa1d
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Todd Poynor <toddpoynor@google.com>

7 years agopanic: Add board ID to panic output
Nishanth Menon [Wed, 17 Aug 2011 23:31:58 +0000]
panic: Add board ID to panic output

At times, it is necessary for boards to provide some additional information
as part of panic logs. Provide information on the board hardware as part
of panic logs.

It is safer to print this information at the very end in case something
bad happens as part of the information retrieval itself.

To use this, set global mach_panic_string to an appropriate string in the
board file.

Change-Id: Id12cdda87b0cd2940dd01d52db97e6162f671b4d
Signed-off-by: Nishanth Menon <nm@ti.com>

7 years agoPM: Print pending wakeup IRQ preventing suspend to dmesg
Todd Poynor [Mon, 24 Jan 2011 22:36:39 +0000]
PM: Print pending wakeup IRQ preventing suspend to dmesg

Prints the name of the first action for a pending wakeup IRQ.

Change-Id: I36f90735c75fb7c7ab1084775ec0d0ab02336e6e
Signed-off-by: Todd Poynor <toddpoynor@google.com>

7 years agoprintk: do not handle non-sleepable notification in console_cpu_notify
mhban [Wed, 8 Jun 2011 09:13:15 +0000]
printk: do not handle non-sleepable notification in console_cpu_notify

- CPU_DYING should not be handled in sleepable context

Signed-off-by: Minho Ban <mhban@samsung.com>

7 years agoARM: vfp: Always save VFP state in vfp_pm_suspend
Colin Cross [Tue, 16 Aug 2011 23:36:29 +0000]
ARM: vfp: Always save VFP state in vfp_pm_suspend

vfp_pm_suspend should save the VFP state in suspend after
any lazy context switch.  If it only saves when the VFP is enabled,
the state can get lost when, on a UP system:
  Thread 1 uses the VFP
  Context switch occurs to thread 2, VFP is disabled but the
     VFP context is not saved
  Thread 2 initiates suspend
  vfp_pm_suspend is called with the VFP disabled, and the unsaved
     VFP context of Thread 1 in the registers

Modify vfp_pm_suspend to save the VFP context whenever
vfp_current_hw_state is not NULL.

Change-Id: I91f29722d256a3afc1cc04df8b227541434ccffb
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Barry Song <bs14@csr.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Colin Cross <ccross@android.com>

7 years agoARM: vfp: Move exception address fixup into vfphw.S
Colin Cross [Thu, 27 Jan 2011 23:46:20 +0000]
ARM: vfp: Move exception address fixup into vfphw.S

If the PC on the stack is updated in entry-armv.S,
do_undefinstr can get called after the fixup.  do_undefinstr
does its own fixup, and doing both causes the PC to point to
half way through an instruction.

Instead, do the fixup in do_vfp, where only the vfp code
can get called.

Change-Id: I6d966887adc8ed58d88bfe0cb3c0ba29213be488
Signed-off-by: Colin Cross <ccross@android.com>

7 years ago[ARM] process: Add display of memory around registers when displaying regs.
San Mehat [Tue, 25 Aug 2009 23:52:22 +0000]
[ARM] process: Add display of memory around registers when displaying regs.

This is extremely useful in diagnosing remote crashes, and is based heavily
on original work by <md@google.com>.

Signed-off-by: San Mehat <san@google.com>
Cc: Michael Davidson <md@google.com>

[ARM] process: Use uber-safe probe_kernel_address() to read mem when dumping.

This prevents the dump from taking pagefaults / external aborts.

Signed-off-by: San Mehat <san@google.com>

7 years agodrivers: power: Add watchdog timer to catch drivers which lockup during suspend.
Benoit Goby [Thu, 13 Aug 2009 16:40:42 +0000]
drivers: power: Add watchdog timer to catch drivers which lockup during suspend.

Rather than hard-lock the kernel, dump the suspend thread stack and
BUG() when a driver takes too long to suspend.  The timeout is set
to 12 seconds to be longer than the usbhid 10 second timeout.

Exclude from the watchdog the time spent waiting for children that
are resumed asynchronously and time every device, whether or not they
resumed synchronously.

Change-Id: Ifd211c06b104860c2fee6eecfe0d61774aa4508a
Original-author: San Mehat <san@google.com>
Signed-off-by: Benoit Goby <benoit@android.com>