- 14 12月, 2009 17 次提交
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由 Michal Simek 提交于
We used cache_line as cache_line_lenght. For this reason we did cache flushing 4 times longer than was necessary. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
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: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
I had to change message for gpio-reset because I always not to see it. Prefix RESET is big and visible. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
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: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
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: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
For more information look at Documentation/trace folder. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
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: NSteven Rostedt <rostedt@goodmis.org> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
Implement MCOUNT_TEST in asm code - it is faster than use generic code Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
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: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
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: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
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: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
It is the same counter as we use as free running one. I would like to use it for ftrace. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
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: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
It is important for ftrace irqsoff support Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
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: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
Signed-off-by: NMichal Simek <monstr@monstr.eu>
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- 11 12月, 2009 1 次提交
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由 Al Viro 提交于
New helper - sys_mmap_pgoff(); switch syscalls to using it. Acked-by: NDavid S. Miller <davem@davemloft.net> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 16 10月, 2009 2 次提交
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由 Grant Likely 提交于
Merge common code between Microblaze and PowerPC, and make it available to Sparc Signed-off-by: NGrant Likely <grant.likely@secretlab.ca> Acked-by: NDavid S. Miller <davem@davemloft.net> Acked-by: NWolfram Sang <w.sang@pengutronix.de> Acked-by: NMichal Simek <monstr@monstr.eu> Acked-by: NStephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: NStephen Rothwell <sfr@canb.auug.org.au>
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由 Grant Likely 提交于
Add a common header file for working with the flattened device tree data structure and merge the shared data tags used by Microblaze and PowerPC Signed-off-by: NGrant Likely <grant.likely@secretlab.ca> Acked-by: NDavid S. Miller <davem@davemloft.net> Acked-by: NWolfram Sang <w.sang@pengutronix.de> Acked-by: NMichal Simek <monstr@monstr.eu> Acked-by: NStephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: NStephen Rothwell <sfr@canb.auug.org.au>
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- 13 10月, 2009 1 次提交
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由 Arnaldo Carvalho de Melo 提交于
Meaning receive multiple messages, reducing the number of syscalls and net stack entry/exit operations. Next patches will introduce mechanisms where protocols that want to optimize this operation will provide an unlocked_recvmsg operation. This takes into account comments made by: . Paul Moore: sock_recvmsg is called only for the first datagram, sock_recvmsg_nosec is used for the rest. . Caitlin Bestler: recvmmsg now has a struct timespec timeout, that works in the same fashion as the ppoll one. If the underlying protocol returns a datagram with MSG_OOB set, this will make recvmmsg return right away with as many datagrams (+ the OOB one) it has received so far. . Rémi Denis-Courmont & Steven Whitehouse: If we receive N < vlen datagrams and then recvmsg returns an error, recvmmsg will return the successfully received datagrams, store the error and return it in the next call. This paves the way for a subsequent optimization, sk_prot->unlocked_recvmsg, where we will be able to acquire the lock only at batch start and end, not at every underlying recvmsg call. Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 05 10月, 2009 2 次提交
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由 Michal Simek 提交于
Previous patch d63678d607d0e37ec7abe5ceb545d7e8aab956a4 clear it for noMMU kernel. This one do it for MMU. Correct noMMU version Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
Signed-off-by: NMichal Simek <monstr@monstr.eu>
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- 24 9月, 2009 1 次提交
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由 Alexey Dobriyan 提交于
* remove asm/atomic.h inclusion from linux/utsname.h -- not needed after kref conversion * remove linux/utsname.h inclusion from files which do not need it NOTE: it looks like fs/binfmt_elf.c do not need utsname.h, however due to some personality stuff it _is_ needed -- cowardly leave ELF-related headers and files alone. Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 22 9月, 2009 9 次提交
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由 Michal Simek 提交于
_start is setup to physical kernel start address. This caused that when you load vmlinux (with MMU kernel) via XMD program counter (pc) is setup correctly and then you can write con and start kernel. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
Currently, vmlinux has LMA==VMA for all sections, which is wrong for MMU kernels. Previous patches in this series defined the LOAD_OFFSET constant, now we make use of it in our link script. Other minor changes in this patch: * brace/indenting cleanup of some sections * put __fdt_* symbols in their own section, and apply LOAD_OFFSET fixup Signed-off-by: NJohn Williams <john.williams@petalogix.com> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 John Williams 提交于
Signed-off-by: NJohn Williams <john.williams@petalogix.com> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
Signed-off-by: NJohn Williams <john.williams@petalogix.com>
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由 Michal Simek 提交于
Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 John Williams 提交于
FSR is sticky, so after the userspace exception/signal generation, clear it ready for next time. Signed-off-by: NJohn Williams <john.williams@petalogix.com>
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由 John Williams 提交于
Signed-off-by: NJohn Williams <john.williams@petalogix.com>
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由 Michal Simek 提交于
I thought that this part of code could be removed because just save and restore MSR but any code can't change it. But seems to that any part of code works with this information. This patch solved problem with allocation. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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- 21 9月, 2009 5 次提交
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由 Michal Simek 提交于
It is more safe to use clear instead of msrset. We save some instructions too. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Michal Simek 提交于
It was necessary to use fourth parameter(r8) in early_printk to show messages on console. Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Tim Abbott 提交于
I wasn't able to further clean up the linker script using the INIT_DATA_SECTION macro because of the FIXME comment for the .init.ramfs section; when that is resolved we should convert microblaze to use INIT_DATA_SECTION. Signed-off-by: NTim Abbott <tabbott@ksplice.com> Cc: Michal Simek <monstr@monstr.eu> Cc: microblaze-uclinux@itee.uq.edu.au Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 Ingo Molnar 提交于
Bye-bye Performance Counters, welcome Performance Events! In the past few months the perfcounters subsystem has grown out its initial role of counting hardware events, and has become (and is becoming) a much broader generic event enumeration, reporting, logging, monitoring, analysis facility. Naming its core object 'perf_counter' and naming the subsystem 'perfcounters' has become more and more of a misnomer. With pending code like hw-breakpoints support the 'counter' name is less and less appropriate. All in one, we've decided to rename the subsystem to 'performance events' and to propagate this rename through all fields, variables and API names. (in an ABI compatible fashion) The word 'event' is also a bit shorter than 'counter' - which makes it slightly more convenient to write/handle as well. Thanks goes to Stephane Eranian who first observed this misnomer and suggested a rename. User-space tooling and ABI compatibility is not affected - this patch should be function-invariant. (Also, defconfigs were not touched to keep the size down.) This patch has been generated via the following script: FILES=$(find * -type f | grep -vE 'oprofile|[^K]config') sed -i \ -e 's/PERF_EVENT_/PERF_RECORD_/g' \ -e 's/PERF_COUNTER/PERF_EVENT/g' \ -e 's/perf_counter/perf_event/g' \ -e 's/nb_counters/nb_events/g' \ -e 's/swcounter/swevent/g' \ -e 's/tpcounter_event/tp_event/g' \ $FILES for N in $(find . -name perf_counter.[ch]); do M=$(echo $N | sed 's/perf_counter/perf_event/g') mv $N $M done FILES=$(find . -name perf_event.*) sed -i \ -e 's/COUNTER_MASK/REG_MASK/g' \ -e 's/COUNTER/EVENT/g' \ -e 's/\<event\>/event_id/g' \ -e 's/counter/event/g' \ -e 's/Counter/Event/g' \ $FILES ... to keep it as correct as possible. This script can also be used by anyone who has pending perfcounters patches - it converts a Linux kernel tree over to the new naming. We tried to time this change to the point in time where the amount of pending patches is the smallest: the end of the merge window. Namespace clashes were fixed up in a preparatory patch - and some stylistic fallout will be fixed up in a subsequent patch. ( NOTE: 'counters' are still the proper terminology when we deal with hardware registers - and these sed scripts are a bit over-eager in renaming them. I've undone some of that, but in case there's something left where 'counter' would be better than 'event' we can undo that on an individual basis instead of touching an otherwise nicely automated patch. ) Suggested-by: NStephane Eranian <eranian@google.com> Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: NPaul Mackerras <paulus@samba.org> Reviewed-by: NArjan van de Ven <arjan@linux.intel.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: <linux-arch@vger.kernel.org> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Joe Perches 提交于
Signed-off-by: NJoe Perches <joe@perches.com> Signed-off-by: NTim Abbott <tabbott@ksplice.com> Acked-by: NPaul Mundt <lethal@linux-sh.org> Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
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- 18 8月, 2009 2 次提交
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由 Michal Simek 提交于
Signed-off-by: NMichal Simek <monstr@monstr.eu>
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由 John Williams 提交于
This code path doesn't test any returned pointers for NULL, leading to a bad kernel page fault if there's no timer/intc found. Slightly better is to BUG(), but even better still would be a printk beforehand. Signed-off-by: NJohn Williams <john.williams@petalogix.com> Signed-off-by: NMichal Simek <monstr@monstr.eu>
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