- 31 Aug, 2016 40 commits
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Alexander Kapshuk authored
The algorithm that extracts the version number of the utility being queried, and prints the name of the utility and its version number is currently implemented in awk. The code is used throughout the script, making its use repetative. The proposed implementation confines the algorithm in question to a function, which makes the script easier to read overall, as well as considerably reduces the number of lines of code. Every attempt has been made to retain the look and the format generated by the current implementation. Signed-off-by:
Alexander Kapshuk <alexander.kapshuk@gmail.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Wei Yongjun authored
Fix 'timeout_us' parameter description. Signed-off-by:
Wei Yongjun <weiyj.lk@gmail.com> Signed-off-by:
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Ben Werbowyj authored
Correct pointer notations to include whitespace between variable type and "*" character. Inserted blank line after variable declatations at two locations. Rearranged comparison within an if statment to have the constant on the right-hand side. Signed-off-by:
Ben Werbowyj <ben.werbowyj@gmail.com> Acked-by:
Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by:
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Ben Werbowyj authored
Assignment of variable count removed from within an if statment. This was done at two locations in the file. Signed-off-by:
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Ben Werbowyj authored
Inserted whitespace between command and open parenthesis at two locations. Removed new line between open brace and command/declaration at two locations. Signed-off-by:
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Benedikt Spranger authored
We had to say goodbye when Hans passed away recently. Hans was a free-software enthusiast and an active contributor. He was the main author and maintainer of the UIO subsystem and contributed in various ways to the Linux kernel as a professional and hobbyist. He is greatly missed. Signed-off-by:
Benedikt Spranger <b.spranger@linutronix.de> Signed-off-by:
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Martyn Welch authored
This patch introduces a fake VME bridge driver. This driver currently emulates a subset of the VME bridge functionality. This allows some VME subsystem development and even some VME device driver development to be carried out in the absence of a proper VME bus. Signed-off-by:
Martyn Welch <martyn@welchs.me.uk> Signed-off-by:
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Paul Gortmaker authored
The Kconfig currently controlling compilation of this code is: drivers/vme/Kconfig:menuconfig VME_BUS drivers/vme/Kconfig: bool "VME bridge support" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. We replace module.h and moduleparam.h (unused) with init.h and also export.h ; the latter since this file does export some syms. Since this is a struct bus_type and not a platform_driver, we don't have any ".suppress_bind_attrs" to be concerned about when we drop the ".remove" code from this file. Since module_init was not in use by this code, the init ordering remains unchanged with this commit. Cc: Manohar Vanga <manohar.vanga@gmail.com> Signed-off-by:
Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by:
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Alessio Igor Bogani authored
These drivers have a PCI device ID table but the PCI module alias information is not created so module autoloading won't work. Signed-off-by:
Alessio Igor Bogani <alessio.bogani@elettra.eu> Acked-by:
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Martyn Welch authored
The vme_register_driver() api changed in commit 5d6abf37 ("staging: vme: make match() driver specific to improve non-VME64x support") but the documentation wasn't updated. Update the documentation to match the API. Signed-off-by:
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Aaron Sierra authored
Make the location monitor callback function prototype more useful by changing the argument from an integer to a void pointer. All VME bridge drivers were simply passing the location monitor index (e.g. 0-3) as the argument to these callbacks. It is much more useful to pass back a pointer to data that the callback-registering driver cares about. There appear to be no in-kernel callers of vme_lm_attach (or vme_lme_request for that matter), so this change only affects the VME subsystem and bridge drivers. This has been tested with Tsi148 hardware, but the CA91Cx42 changes have only been compiled. Signed-off-by:
Aaron Sierra <asierra@xes-inc.com> Acked-by:
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Muhammad Falak R Wani authored
Use memdup_user to duplicate a memory region from user-space to kernel-space, instead of open coding using kmalloc & copy_from_user. Signed-off-by:
Muhammad Falak R Wani <falakreyaz@gmail.com> Signed-off-by:
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Johannes Thumshirn authored
The MEN Chameleon specification states that a chameleon FPGA can include a bridge descriptor, which then opens up a new bus behind this bridge. MCB included subdevice handling code in the core, but no support for bus descriptors in the parser, due to a lack of hardware access. As this is technically dead code, but it gets executed on a device add, I've decided to remove it. Signed-off-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
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Johannes Thumshirn authored
The to_mcb_{bus,device,driver}() macros lacked type safety, so convert them to inline functions to enforce compile time type checking. Signed-off-by: -
Andreas Werner authored
Added support for the bar descriptor. This type is used for FPGAs connect to the LPC or to a non PCI bus. The Bar descriptor could have a maximum of 6 BARs. Each of the devices within the FPGA could be mapped to a different BAR. The BAR descriptor is comparable to the PCI header. Signed-off-by:
Andreas Werner <andreas.werner@men.de> [ free bar descriptor in the non-error case ] Signed-off-by:
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Andreas Werner authored
Add support for MCB bases FPGAs connected to the LPC or non PCI Bus. This driver currently supports the SC24 board. The FPGA is connected to the LPC bus and is identified using the BIOS DMI string. Signed-off-by:
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Jan Viktorin authored
The variable i contains a total number of resources (including IORESOURCE_IRQ). However, we want the dmem_region_start to point after the last resource of type IORESOURCE_MEM. The original behaviour leads (very likely) to skipping several UIO mapping regions and makes them useless. Fix this by computing dmem_region_start from the uiomem which points to the last used UIO mapping. Fixes: 0a0c3b5a ("Add new uio device for dynamic memory allocation") Signed-off-by:
Jan Viktorin <viktorin@rehivetech.com> Signed-off-by:
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Mathieu Poirier authored
With this patch we add start/stop filtering as specified on the perf cmd line. When the IP matches the start address trace generation gets triggered. The stop condition is achieved when the IP matches the stop address. Signed-off-by:
Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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Mathieu Poirier authored
This patch adds the capability to specify address ranges from the perf cmd line using the --filter option. If the IP falls within the range(s) program flow traces are generated. Signed-off-by:
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Mathieu Poirier authored
The include/exclude function of a tracer is applicable to address range and start/stop filters. To avoid duplication and reuse code moving the include/exclude configuration to a function of its own. Signed-off-by:
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Mathieu Poirier authored
Introducing a new function to do address range configuration generic enough to work for any address range and any comparator. Signed-off-by:
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Mathieu Poirier authored
The default filter configuration was hard to read and included some redundancy. This patch attempts to stream line configuration and improve readability. No change of functionality is included. Signed-off-by:
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Mathieu Poirier authored
Splitting the steps involved in the configuration of a tracer. The first part is generic and can be reused for both sysFS and Perf methods. The second part pertains to the configuration of filters themselves where the source of the information used to configure the filters will vary depending on the access methods. Signed-off-by:
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Mathieu Poirier authored
This patch implements the required API needed to access and retrieve range and start/stop filters from the perf core. Signed-off-by:
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Mathieu Poirier authored
Both ETMv3 and ETMv4 drivers are declaring an 'enum etm_addr_type', creating reduncancy. This patch removes the enumeration from the driver files and adds it to a common header. Signed-off-by:
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Mathieu Poirier authored
With this commit [1] address range filter information is now found in the struct hw_perf_event::addr_filters. As such pass the event itself to the coresight_source::enable/disable() functions so that both event attribute and filter can be accessible for configuration. [1] 'commit 375637bc ("perf/core: Introduce address range filtering")' Signed-off-by:
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Sudeep Holla authored
The ETM registers are classified into 2 categories: trace and management. The core power domain contains most of the trace unit logic including all(except TRCOSLAR and TRCOSLSR) the trace registers. The debug power domain contains the external debugger interface including all management registers. This patch adds coresight unit specific function coresight_simple_func which can be used for ETM trace registers by providing a ETM specific read function which does smp cross call to ensure the trace core is powered up before the register is accessed. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
Sudeep Holla <sudeep.holla@arm.com> Signed-off-by:
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Sudeep Holla authored
The Coresight ETMv4 architecture provides a way to request to keep the power to the trace unit. This might help to collect the traces without the need to disable the CPU power management(entering/exiting deeper idle states). Trace PowerDown Control Register provides powerup request bit which when set requests the system to retain power to the trace unit and emulate the powerdown request. Typically, a trace unit drives a signal to the power controller to request that the trace unit core power domain is powered up. However, if the trace unit and the CPU are in the same power domain then the implementation might combine the trace unit power up status with a signal from the CPU. This patch requests to retain power to the trace unit when active and to remove when inactive. Note this change will only request but the behaviour depends on the implementation. However, it matches the exact behaviour expected when the external debugger is connected with respect to CPU power states. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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Markus Elfring authored
The kfree() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by:
Markus Elfring <elfring@users.sourceforge.net> Signed-off-by:
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Wei Yongjun authored
Remove duplicated include. Signed-off-by:
Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by:
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Suzuki K Poulose authored
Each coresight device prepares a description for coresight_register() in struct coresight_desc. Once we register the device, the description is useless and can be freed. The coresight_desc is small enough (48bytes on 64bit)i to be allocated on the stack. Hence use an automatic variable to avoid a needless dynamic allocation and wasting the memory(which will only be free'd when the device is destroyed). Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Pratik Patel <pratikp@codeaurora.org> Signed-off-by:
Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by:
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Peter Chen authored
of_node_put needs to be called when the device node which is got from of_parse_phandle has finished using. Cc: linux-arm-kernel@lists.infradead.org Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
Peter Chen <peter.chen@nxp.com> Signed-off-by:
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Olivier Schonken authored
Signed-off-by:
Olivier Schonken <olivier.schonken@gmail.com> Signed-off-by:
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Mathieu Poirier authored
It is mandatory to enable a coresight block's power domain before trying to access management registers. Otherwise the transaction simply stalls, leading to a system hang. Signed-off-by:
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Mathieu Poirier authored
Depending on when CoreSight device are discovered it is possible that some IP block may be referencing devices that have not been added to the bus yet. The end result is missing nodes in the CoreSight topology even when the devices are present and properly initialised. This patch solves the problem by asking the driver core to try initialising the device at a later time when the children of a CoreSight node are missing. Signed-off-by:
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Suzuki K Poulose authored
When we encounter a timeout waiting for a status change via coresight_timeout, the caller always print the offset which was tried. This is pretty much useless as it doesn't specify the bit position we wait for. Also, one needs to lookup the TRM to figure out, what was wrong. This patch changes all such error messages to print something more meaningful. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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Suzuki K Poulose authored
Use the defined symbol rather than hardcoding the value to check whether the TMC buffer is full. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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Suzuki K Poulose authored
This patch cleans up the peripheral id table for different ETMv4 implementations. As per Cortex-A53 TRM, the ETM has following id values: Peripheral ID0 0x5D 0xFE0 Peripheral ID1 0xB9 0xFE4 Peripheral ID2 0x4B 0xFE8 Peripheral ID3 0x00 0xFEC where, PID2: has the following format: [7:4] Revision [3] JEDEC 0b1 res1. Indicates a JEP106 identity code is used [2:0] DES_1 0b011 ARM Limited. This is bits[6:4] of JEP106 ID code The existing table entry checks only the bits [1:0], which is not sufficient enough. Fix it to match bits [3:0], just like the other entries do. While at it, correct the comment for A57 and the A53 entry. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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Suzuki K Poulose authored
At present the ETF or ETR gives out the entire device buffer, even if there is less or even no trace data available. This patch limits the trace data given out to the actual trace data collected. Cc: mathieu.poirier@linaro.org Signed-off-by:
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Suzuki K Poulose authored
This is a cleanup patch. coresight_device->conns holds an array to point to the devices connected to the OUT ports of a component. Sinks, e.g ETR, do not have an OUT port (nr_outport = 0), as it streams the trace to memory via AXI. At coresight_register() we do : conns = kcalloc(csdev->nr_outport, sizeof(*conns), GFP_KERNEL); if (!conns) { ret = -ENOMEM; goto err_kzalloc_conns; } For ETR, since the total size requested for kcalloc is zero, the return value is, ZERO_SIZE_PTR ( != NULL). Hence, csdev->conns = ZERO_SIZE_PTR which cannot be verified later to contain a valid pointer. The code which accesses the csdev->conns is bounded by the csdev->nr_outport check, hence we don't try to dereference the ZERO_SIZE_PTR. This patch cleans up the csdev->conns initialisation to make sure we initialise it properly(i.e, either NULL or valid conns array). Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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