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* Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds2010-08-051-1/+0Star
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (49 commits) microblaze: Add KGDB support microblaze: Support brki rX, 0x18 for user application debugging microblaze: Remove nop after MSRCLR/SET, MTS, MFS instructions microblaze: Simplify syscall rutine microblaze: Move PT_MODE saving to delay slot microblaze: Fix _interrupt function microblaze: Fix _user_exception function microblaze: Put together addik instructions microblaze: Use delay slot in syscall macros microblaze: Save kernel mode in delay slot microblaze: Do not mix register saving and mode setting microblaze: Move SAVE_STATE upward microblaze: entry.S: Macro optimization microblaze: Optimize hw exception rutine microblaze: Implement clear_ums macro and fix SAVE_STATE macro microblaze: Remove additional setup for kernel_mode microblaze: Optimize SAVE_STATE macro microblaze: Remove additional loading microblaze: Completely remove working with R11 register microblaze: Do not setup BIP in _debug_exception ...
| * microblaze: Add stack unwinderSteven J. Magnani2010-08-041-1/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement intelligent backtracing by searching for stack frame creation, and emitting only return addresses. Use print_hex_dump() to display the entire binary kernel stack. Limitation: MMU kernels are not currently able to trace beyond a system trap (interrupt, syscall, etc.). It is the intent of this patch to provide infrastructure that can be extended to add this capability later. Changes from V1: * Removed checks in find_frame_creation() that prevented location of the frame creation instruction in heavily optimized code * Various formatting/commenting/file location tweaks per review comments * Dropped Kconfig option to enable STACKTRACE as something logically separate Signed-off-by: Steven J. Magnani <steve@digidescorp.com>
* | net: NET_SKB_PAD should depend on L1_CACHE_BYTESEric Dumazet2010-06-161-3/+0Star
|/ | | | | | | | | | | | | | | | | | | | | | In old kernels, NET_SKB_PAD was defined to 16. Then commit d6301d3dd1c2 (net: Increase default NET_SKB_PAD to 32), and commit 18e8c134f4e9 (net: Increase NET_SKB_PAD to 64 bytes) increased it to 64. While first patch was governed by network stack needs, second was more driven by performance issues on current hardware. Real intent was to align data on a cache line boundary. So use max(32, L1_CACHE_BYTES) instead of 64, to be more generic. Remove microblaze and powerpc own NET_SKB_PAD definitions. Thanks to Alexander Duyck and David Miller for their comments. Suggested-by: David Miller <davem@davemloft.net> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Revert "microblaze: Kill NET_SKB_PAD and NET_IP_ALIGN overrides."David S. Miller2010-05-071-0/+10
| | | | | | | | | This reverts commit 39e0786d3cf39c6d2f47b4818ae2da8b8ebc9ce2. On request from microblaze developers, they are going to handle this differently. Signed-off-by: David S. Miller <davem@davemloft.net>
* microblaze: Kill NET_SKB_PAD and NET_IP_ALIGN overrides.David S. Miller2010-05-071-10/+0Star
| | | | | | | | | NET_IP_ALIGN defaults to 2, no need to override. NET_SKB_PAD is now 64, which is much larger than microblaze's L1_CACHE_SIZE so no need to override that either. Signed-off-by: David S. Miller <davem@davemloft.net>
* Add non-Virtex5 support for LL TEMAC driverJohn Linn2010-04-131-0/+11
| | | | | | | | | | | | | | | | This patch adds support for using the LL TEMAC Ethernet driver on non-Virtex 5 platforms by adding support for accessing the Soft DMA registers as if they were memory mapped instead of solely through the DCR's (available on the Virtex 5). The patch also updates the driver so that it runs on the MicroBlaze. The changes were tested on the PowerPC 440, PowerPC 405, and the MicroBlaze platforms. Signed-off-by: John Tyner <jtyner@cs.ucr.edu> Signed-off-by: John Linn <john.linn@xilinx.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
* Revert "Add non-Virtex5 support for LL TEMAC driver"David S. Miller2010-04-081-11/+0Star
| | | | | | | | This reverts commit 459569145516f7967b916c57445feb02c600668c. Uses virt_to_bus() and breaks the build. Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2010-04-071-0/+3
|\ | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/net/bonding/bond_main.c drivers/net/via-velocity.c drivers/net/wireless/iwlwifi/iwl-agn.c
| * microblaze: Add {z,}alloc_maybe_bootmem functionsMichal Simek2010-03-111-0/+3
| | | | | | | | | | | | I will need {z,}alloc_maybe_bootmem functions for pci patches Signed-off-by: Michal Simek <monstr@monstr.eu>
* | Add non-Virtex5 support for LL TEMAC driverJohn Linn2010-04-071-0/+11
|/ | | | | | | | | | | | | | | This patch adds support for using the LL TEMAC Ethernet driver on non-Virtex 5 platforms by adding support for accessing the Soft DMA registers as if they were memory mapped instead of solely through the DCR's (available on the Virtex 5). The patch also updates the driver so that it runs on the MicroBlaze. The changes were tested on the PowerPC 440, PowerPC 405, and the MicroBlaze platforms. Signed-off-by: John Tyner <jtyner@cs.ucr.edu> Signed-off-by: John Linn <john.linn@xilinx.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* microblaze: Lockdep supportMichal Simek2009-12-141-0/+2
| | | | | | | | | | | | | | | | | | | | | | | 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>
* microblaze: convert all simple headers to use asm-genericRemis Lima Baima2009-07-061-0/+3
| | | | | | | | | | | | | | All the simple microblaze header files were adapted to use their asm-generic implementations. These files are more simple and were quite straightforward to change. fb.h, vga.h and parport.h previously did not exist, using the generic version makes it possible to build more drivers successfully in allyesonfig. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
* microblaze_v8: system.h processor.hMichal Simek2009-03-271-0/+91
Reviewed-by: Ingo Molnar <mingo@elte.hu> Acked-by: John Linn <john.linn@xilinx.com> Acked-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Acked-by: John Williams <john.williams@petalogix.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
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