- 14 Dec, 2009 40 commits
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Michal Simek authored
panic_timeout is in BSS section and it is cleared with BSS section. This means that value is setup to 0. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
There is not necessary to count system calls that's why I added DEBUG macro Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
For simpleImage format we need to compile DTC. There is still possibility to compile only Linux kernel without DTB compiled-in. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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John Williams authored
Microblaze uses timer interrupt mode. Microblaze don't have any performance counter that's why we use just simple implementation. Signed-off-by:
John Williams <john.williams@petalogix.com> Signed-off-by:
Michal Simek <monstr@monstr.eu>
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steve@digidescorp.com authored
Level interrupts need to be ack'd in the unmask handler, as in powerpc. Among other issues, this bug causes the system clock to appear to run at double-speed. Signed-off-by:
Steven J. Magnani <steve@digidescorp.com> Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
Futimesat was disabled. LTP testing shows that MB has no problem with this syscall. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
WB cache has special flag in PVR. There is added checking mechanism for PVR and DTS. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
just file cleanup Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
Microblaze v7.20 provides new lwx, swx instructions which bring possibility to implement lock rutines. There are some tests in open posix thread LTP part but current toolchain not support it. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
The functions, dev_arch_data_set_node and get_node are missing and are needed by some device drivers such as I2C. Signed-off-by:
John Linn <john.linn@xilinx.com> Signed-off-by:
Michal Simek <monstr@monstr.eu>
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John Linn authored
The device tree handling for the gpio in the heart beat was not handling the system when there was no gpio and it wasn't working with a newer version of the gpio core which does not have the is-bidir property. Signed-off-by:
John Linn <john.linn@xilinx.com> Signed-off-by:
Michal Simek <monstr@monstr.eu>
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John Williams authored
This is first patch which clear part of uaccess.h. uaccess.h will be clear later. Signed-off-by:
John Williams <john.williams@petalogix.com> Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
memory_start symbol is needed by kernel modules. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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John Williams authored
This will ensure that kernels built with no custom CPU settings will still boot OK on hardware that has additional CPU hardware instructions etc. Signed-off-by:
John Williams <john.williams@petalogix.com> Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
It is generated with longer compatible list Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
Asm code uses barrel-shifter instruction that's why we have to protect cases when HW don't have it. Reported-by:
John Linn <john.linn@xilinx.com> Signed-off-by:
Michal Simek <monstr@monstr.eu>
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John Williams authored
This was intended to allow manual override of CPU settings copied automatically to Kconfig.auto, however it's problematic for several reasons, but mostly: * If the defconfig doesn't have ALLOW_EDIT_AUTO=y, then it's impossible for that defconfig to iverride the values in the kernel source tree. This leads to very strange errors where the kernel is compiled with the wrong CPUFLAGS. Next patch in the series will back out the default in Kconfig.auto to baseline settings, so a kernel built with no default values will at least boot on any hardware, just not make use of additional CPU features. Signed-off-by:
John Williams <john.williams@petalogix.com> Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
Two version are generated. linux.bin.ub which is created from linux.bin file and simpleImage.<dts>.ub which is created from stripped simpleImage.<dts> file Load address and entry point is for microblaze first instruction which is CONFIG_KERNEL_BASE_ADDR variable. There is possible for simpleImage format parse _start symbol too. simpleImage.<dts> is still stripped elf file I cleared simpleImage.<dts>.unstrip file because there are so big. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
After the signal frame is set up on the userspace stack, ptrace() should be given an opportunity to single-step into the signal handler FRV, Blackfin, mn10300 and UM. Worth to look at that patches. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
There is missing checking agains PVR but this is not important for now. There are some missing checking too. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
We used cache_line as cache_line_lenght. For this reason we did cache flushing 4 times longer than was necessary. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
Till this patch reset always perform writen to 1. Now we can use negative logic and perform reset write to 0. It is opposite level than is currently read from that pin Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
I had to change message for gpio-reset because I always not to see it. Prefix RESET is big and visible. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
Saving is done in SAVE_STATE macros that's why another save discard previous saved value. This change has no effect to normal programs because they ends in any exception and they are killed. On the other side has effect on debugging. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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steve@digidescorp.com authored
Configuring DEBUG_SLAB causes a noMMU kernel to die during initialization with an invalid virtual address panic in kfree_debugcheck(). The panic is due to an improper definition of pfn_valid(). Signed-off-by:
Steven J. Magnani <steve@digidescorp.com> Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
This patch add support for dynamic function graph tracer. There is one my expactation that I can do flush_icache after all code modification. On microblaze is this safer than do flush for every entry. For icache is used name flush but correct should be invalidation - this will be fix in upcomming new cache implementaion and WB support. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
For more information look at Documentation/trace folder. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
With dynamic function tracer, by default, _mcount is defined as an "empty" function, it returns directly without any more action. When enabling it in user-space, it will jump to a real tracing function(ftrace_caller), and do the real job for us. Differ from the static function tracer, dynamic function tracer provides two functions ftrace_make_call()/ftrace_make_nop() to enable/disable the tracing of some indicated kernel functions(set_ftrace_filter). In the kernel version, there is only one "_mcount" string for every kernel function, so, we just need to match this one in mcount_regex of scripts/recordmcount.pl. For more information please look at code and Documentation/trace folder. Steven ACK that scripts/recordmcount.pl part. Acked-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
Implement MCOUNT_TEST in asm code - it is faster than use generic code Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
If -pg of gcc is enabled with CONFIG_FUNCTION_TRACER=y. a calling to _mcount will be inserted into each kernel function. so, there is a possibility to trace the kernel functions in _mcount. This patch add the specific _mcount support for static function tracing. by default, ftrace_trace_function is initialized as ftrace_stub(an empty function), so, the default _mcount will introduce very little overhead. after enabling ftrace in user-space, it will jump to a real tracing function and do static function tracing for us. Commit message from Wu Zhangjin <wuzhangjin@gmail.com> Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
There are just two major changes Renamed local_irq functions to raw_local_irq in irq.c. Added TRACE_IRQFLAGS_SUPPORT to Kconfig.debug. Look at Documentation/irqflags-tracing.txt Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
Microblaze needs to do lock_init very soon because MMU init calls lock functions. Here is the explanation from Peter Zijlstra why we have to enable __ARCH_WANTS_INTERRUPTS_ON_CTSW. "So we schedule while holding rq->lock (for obvious reasons), but since lockdep tracks held locks per tasks, we need to transfer the held state from the prev to the next task. We do this by explicity calling spin_release(&rq->lock) in context_switch() right before switch_to(), and calling spin_acquire(&rq->lock) in finish_task_switch()->finish_lock_switch(). Now, for some reason lockdep thinks that interrupts got enabled over the context switch (git grep __ARCH_WANTS_INTERRUPTS_ON_CTSW arch/microblaze doesn't seem to turn up anything). Clearly trying to acquire the rq->lock with interrupts enabled is a bad idea and lockdep warns you about this." Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
It is the same counter as we use as free running one. I would like to use it for ftrace. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
This is working implemetation but the problem is that Microblaze misses frame pointer that's why is there big loop which trace and show all addresses which are in text. It shows addresses which are in registers, etc. This is problem and this is the reason why all Microblaze traces are wrong. There is an option to do hacks and trace the kernel code but this is too complicated. Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
It is important for ftrace irqsoff support Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
The problem was that free_initmem pass to free_initrd_mem got bad aligned __init_begin symbol and free_initrd_mem don't care about __init_end but take PAGE_SIZE instead. Here is behavior in kernel bootlog. ramdisk_execute_command from (init/main.c) was rewrite Freeing unused kernel memory: 6224k freed Failed to execute ��������������{��� Failed to execute ��������������{����. Attempting defaults... Mounting proc: Mounting var: Signed-off-by:
Michal Simek <monstr@monstr.eu>
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Michal Simek authored
Signed-off-by:
Michal Simek <monstr@monstr.eu>
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