msm: perf: Add L2 support for tracecounters

Add L2 counter output to the tracecounters implementation.
This enables collection of L2 PMU counter values upon context switch.
Set up filtering based on number of L2 counters and number of cores.
Read L2 counter values and display them along with L1 counter values.

Change-Id: I8bbbd251ee52c66505d22ccf037c601013a916f0
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Perf: keep events across hotplug

Keep event list alive across a CPU hotplug so that perf
can resume when the CPU comes back online. Bring a CPU
online when exiting a perf session so it can be cleaned
up properly.

Change-Id: Ie0e4a43f751beb77afdc84e9d52b21780f279d80
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Perf: bring CPU online if needed when disabling irq

When disabling an irq, check that the CPU is online
before trying to run on that CPU. Bring the CPU
online if necessary.

This fixes a problem where a CPU that was not online
when disabling the irq caused the disable and the
free to fail. A subsequent attempt to request the irq
also failed because it had not been freed.

Change-Id: Ib873b5ded83ab843ea4e609f196a31ef0083a213
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Perf: Support sw events across hotplug

When CPUs are hotplugged off and on, let the various
sw events continue after the hotplug.

Change-Id: Id1aaf30c459c9cf7c9c38967f9ccad56d4062fd3
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm: perf: initialise krait perf L2 counter enables

Clear the L2 counter enables at initialisation.
They are undefined out of reset.

Change-Id: I957106012625ae09efec47d4f657381963d87a5a
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm: perf: clean up duplicate constraint events

Events with a duplicate constraint are set to state=OFF when detected,
so that their duplicate counts are not read. However, they were not being
cleaned up because the core code only cleaned up ACTIVE events.
This resulted in counters not being freed and eventually running out
of resources.

Clean up the events with state==OFF that were marked that way because of
constraint duplication.
Ensure counts are not updated for OFF events.

Change-Id: If532801c79e6ad6809869eb0a3063774f00c92c3
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Perf: Make per-process counters cumulative

In order to get overall value for performance counters, remove reset during
context switches. Add mechanism to calculate deltas for output to the trace
buffer.

Change-Id: I03d894a1b3bd400d8c256c3068f917ed001fbfd9
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Perf: Fix PID for tracepoints

Make previous value of PID a per_cpu variable.
This is required to get the correct value for previous_pid.

Change-Id: I63baf8164ae9226189c745339b122d806901789d
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Perf: preserve registers across hotplug

Preserve the registers with userspace bits in them
across hotplug and power collapse. This allows
userspace applications to use the performance counters.

Change-Id: I391563ab770df9aabb5d717b6bc4725750ad0283
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm: perf: fix formatting of trace entry

Remove extraneous comma which breaks processing of
the trace data.

Change-Id: I5fda44cde6a39b16be06c72bc968afc19636b32f
Signed-off-by: Neil Leeder <nleeder@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm: perf: Fix cpu id logic in tracectr notifier

The code in tracecounter context switch notifier was using
smp_processor_id() in order to get cpu number. This was resulting
into following dmesg error: "BUG: using smp_processor_id() in
preemptible [00000000] code".
Use thread_info struct to get the cpu #.

Change-Id: Ic7c995d2c2bc25c4389248854dec91fb84ce3128
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
mako_hotplug: encapsulate all the tunables in a dedicated struct for cleanness and for preparation to expose them to userspace for maximum user control over this driver.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm: camera: Limit print in default case of JPEG

Change JPEG_PR_ERR to pr_err_ratelimited in default
case in JPEG ioctl. JPEG_PR_ERR would keep prinitng
when passing invalid parameters in ioctl which will
cause watchdog reset.

Change-Id: Ia8871fda4f10e44e3d2c1216765e26c2e9823038
CRs-fixed: 588260
Signed-off-by: Yiduo Wang <yiduow@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
fs: fuse: Add replacment for CMA pages into the LRU cache

CMA pages are currently replaced in the FUSE file system since
FUSE may hold on to CMA pages for a long time, preventing migration.
The replacement page is added to the file cache but not the LRU
cache. This may prevent the page from being properly aged and dropped,
creating poor performance under tight memory condition. Fix this by
adding the new page to the LRU cache after creation.

Change-Id: Ib349abf1024d48386b835335f3fbacae040b6241
CRs-Fixed: 586855
Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
msm:qdsp6v2: Check null pointer on userspace data argument in kernel

The null pointer check is required to ensure that userspace data
in kernalspace is not null.

Change-Id: I9e522c393ae643626a4bae03731a73f5d6db6458
CRs-Fixed: 563752
Signed-off-by: Mohammad Johny Shaik <mjshai@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
rtc: alarm: Set power-on alarm 120 sec before actual alarm time

This will add extra buffer time for booting-up the device before
actual alarm expiration time.

Change-Id: I02cad84c394a6aab943fff37a1a0de56bb511f56
Signed-off-by: Mohit Aggarwal <maggarwa@codeaurora.org>
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
kernel: alarm: :fix the BUG that device automatically powers on

The value of alarm.time is invalid if we get it by:
    memset(&alarm, 0, sizeof(alarm)).
So function of rtc_set_alarm aborts before it really calls into:
    rtc->ops->set_alarm.
Then we can`t disable the RTC alarm by that. The result is some
alarms enabled by alarm_suspend are not disabled correctly during
alarm_resume. And device will automatically power on.

CRs-fixed: 524051
Change-Id: Ibc99e62878d17ad4f50325630bf0862207e2cf3f
Signed-off-by: Figo Wang <figow@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
kernel: alarm: add dedicated alarm type for poweroff alarm

Now we use type of RTC_WAKEUP for the poweroff alarm.
Actually lots of other applications also use this type.
But these applications never expect the device will
power on after it has been shut down. So we need to
add dedicated alarm type for the Deskclock or similar
applications.

CRs-fixed: 529674
Change-Id: I9b7911906446daa1aeb5835478c9837f8ef797f2
Signed-off-by: Figo Wang <figow@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
kernel: alarm: Do not call rtc_alarm_irq_enable in IRQ Disabled context

Currently shutdown hook of alarm driver is calling
the rtc_alarm_irq_enable API in interrupts disabled
context. So fix the alarm_shutdown function to call
in API rtc_alarm_irq_enable in interrupt enabled context.

CRs-Fixed: 591790
Change-Id: Iebd82482be1dc95c6c978b617e1c18eb36e1b6eb
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
arm: msm: add alarm reboot reason

Add alarm reboot reason for power off charging.

Change-Id: If94d0e4a7ec250cfaa61bf578cae9324db05d32c
Signed-off-by: Maria Yu <aiquny@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>