Description:
Linux kernels, device drivers, modules.
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How to configure ext3 journal on nandsim
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Hi,
To check performance improvement, I want to configure ext3 journal on SSD. To simulate it I want to configure journal on nandsim. Any help will be appreciated.
Thanks,
Soumyajit
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Analysing intermitent more CPU for a process.
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HI,
If this group is not the right place can someone pls guide me to correct group?
Currently I'm trying to investigate an issue of randomly more CPU(not high) consumption of random application thread, running on 2.6.21.7 windriver 2.0 64 bit.
Timing the thread for CPU, took strace which looks like(mid-snippet):... more »
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Moving data on a raw device with a mounted partition
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I need to be able to move data around a disk that has mounted
partitions on Linux. I am not touching data inside the mounted
partitions or the MBR, only the free space around it or unmounted
partitions. So, for example, I would need access to "/dev/sdb" while
"/dev/sdb1" is mounted.
Currently I am using libparted functions but the move is giving me... more »
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sock_create() in kernel
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Hello,
I was looking in to __sock_create() code to get better understanding of the kernel's internal machinery and found that the kernel calls try_module_get() twice; here is a snippet:
static int __sock_create(struct net *net, int family, int type, int protocol, struct socket **res, int kern)... more »
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rpath for library loading
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Hello,
I hope somebody can explain me a little bit the loader process for shared libraries.
I have got a library "libmylib.so", this depends on some other libs. I have set the rpath
to "./". If I run "ldd libmylib.so" all depend libraries will be found. I do not need to setup
any environment variables. All *.so files are in the same directory.... more »
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unable to "rmmod" the module
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Following up with my initial question -- the daemon opens 3 netlink sockets in to the kernel module and polls one of it. The main problem here is that the number of references to the module, i.e. how many processes are using the module (the 3rd field of /proc/net/modules), isn't zero and thus the... more »
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Reading and writing into fpga using PCIe driver.
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Hi,
I'm new to PCI-e drivers working on Xilinx ML605 Virtex-6 FPGA board. The PCIe End Point (32-bit) of the FPGA has been enabled: Bar0, 1 MB. I want to accomplish a simple read/ write operation to the BAR0 location (note: I'm not using DMA). I have registered as a char device and can read all configuration space registers. I'm following the Xilinx XAPP1022 Memory endpoint test given by Xilinx.... more »
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