- 01 Aug, 2008 5 commits
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Martin Schwidefsky authored
For anonymous pages without a swap cache backing the check in page_remove_rmap for the physical dirty bit in page_remove_rmap is unnecessary. The instructions that are used to check and reset the dirty bit are expensive. Removing the check noticably speeds up process exit. In addition the clearing of the dirty bit in __SetPageUptodate is pointless as well. With these two changes there is no storage key operation for an anonymous page anymore if it does not hit the swap space. The micro benchmark which repeatedly executes an empty shell script gets about 5% faster. Signed-off-by:Martin Schwidefsky <schwidefsky@de.ibm.com>
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Heiko Carstens authored
sclp_sync_wait wait synchronously for an sclp interrupt and disables timer interrupts. However on the irq enter paths there is an extra check if a timer interrupt would be due and calls the timer callback. This would schedule softirqs in the wrong context. So introduce local_tick_enable/disable which prevents this. Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
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Michael Holzheu authored
During startup we check if diag308 works using diag 308 subcode 6, which stores the actual ipl information. This fails with rc = 0x102, if the system has been ipled from the HMC using load from CD or load from file. In the case of rc = 0x102 we have to assume that diag 308 is working, since it still can be used to ipl from an alternative device. Signed-off-by:
Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by:
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Stefan Weinhuber authored
When z/VM provides two virtual devices (minidisks) that reside on the same real device, both will receive the configuration data from the real device and thus get the same uid. To fix this problem, z/VM provides an additional configuration data record that allows to distinguish between minidisks. z/VM APAR VM64273 needs be installed so this fix has an effect. Signed-off-by:
Stefan Weinhuber <wein@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
Seems like I forgot this hunk... Signed-off-by:
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- 30 Jul, 2008 35 commits
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Linus Torvalds authored
The iov_iter_advance() function would look at the iov->iov_len entry even though it might have iterated over the whole array, and iov was pointing past the end. This would cause DEBUG_PAGEALLOC to trigger a kernel page fault if the allocation was at the end of a page, and the next page was unallocated. The quick fix is to just change the order of the tests: check that there is any iovec data left before we check the iov entry itself. Thanks to Alexey Dobriyan for finding this case, and testing the fix. Reported-and-tested-by:
Alexey Dobriyan <adobriyan@gmail.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds authored
We zero-fill them like we are supposed to, and that's all fine. It's only an error if the 'romfs_copyfrom()' routine isn't able to fill the data that is supposed to be there. Most of the patch is really just re-organizing the code a bit, and using separate variables for the error value and for how much of the page we actually filled from the filesystem. Reported-and-tested-by:
Chris Fester <cfester@wms.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Matt Waddel <matt.waddel@freescale.com> Cc: Greg Ungerer <gerg@snapgear.com> Signed-of-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpcLinus Torvalds authored
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc/mm: Lockless get_user_pages_fast() for 64-bit (v3) powerpc: Don't use the wrong thread_struct for ptrace get/set VSX regs powerpc: Fix ptrace buffer size for VSX powerpc: Correctly hookup PTRACE_GET/SETVSRREGS for 32 bit processes ide/powermac: Fix use of uninitialized pointer on media-bay powerpc: Allow non-hcall return values for lparcfg writes ipmi/powerpc: Use linux/of_{device,platform}.h instead of asm powerpc/fsl: proliferate simple-bus compatibility to soc nodes Documentation: remove old sbc8260 board specific information cpm2: Rework baud rate generators configuration to support external clocks. powerpc: rtc_cmos_setup: assign interrupts only if there is i8259 PIC cpm_uart: Add generic clock API support to set baudrates cpm_uart: Modem control lines support powerpc: implement GPIO LIB API on CPM1 Freescale SoC. cpm2: Implement GPIO LIB API on CPM2 Freescale SoC. powerpc: Fix 8xx build failure powerpc: clean up the Book-E HW watchpoint support
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Stephen Rothwell authored
when you take the address of the result. Noticed on a sparc64 compile using a version 3.4.5 cross compiler. kernel/time/tick-common.c: In function `tick_check_new_device': kernel/time/tick-common.c:210: error: invalid lvalue in unary `&' ... Just make it a regular expression. Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Acked-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (47 commits) net: Make "networking" one-click deselectable. ipv6: Fix useless proc net sockstat6 removal tcp: MD5: Use MIB counter instead of warning for MD5 mismatch. pkt_sched: Fix OOPS on ingress qdisc add. niu: Fix error checking in niu_ethflow_to_class. IPv6: datagram_send_ctl() should exit immediately when an error occured mac80211: fix mesh beaconing PS3: gelic: use unsigned long for irqflags mac80211: fix cfg80211 hooks for master interface nl80211: fix dump callbacks mac80211: partially fix skb->cb use rtl8187: Improve wireless statistics for RTL8187B rtl8187: Fix for TX sequence number problem mac80211: append CONFIG_ to MAC80211_VERBOSE_PS_DEBUG in net/mac80211/tx.c. mac80211: fix sparse integer as NULL pointer warning drivers/net/wireless/iwlwifi/iwl-led.c: printk fix mac80211: return correct error return from ieee80211_wep_init mac80211: tx, use dev_kfree_skb_any for beacon_get rt2x00: Clear queue entry flags during initialization rt2x00: Force full register config after start() ...
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Vitaly Mayatskikh authored
New ALIGN_DESTINATION macro has sad typo: r8d register was used instead of ecx in fixup section. This can be considered as a regression. Register ecx was also wrongly loaded with value in r8d in copy_user_nocache routine. Signed-off-by:
Vitaly Mayatskikh <v.mayatskih@gmail.com> Signed-off-by:
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Dean Nelson authored
Setup the notify GRU message queue that is used for sending user messages on UV systems. Signed-off-by:
Dean Nelson <dcn@sgi.com> Cc: Jack Steiner <steiner@sgi.com> Cc: "Luck, Tony" <tony.luck@intel.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Dean Nelson authored
Setup the activate GRU message queue that is used for partition activation and channel connection on UV systems. Signed-off-by:
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Dean Nelson authored
Cleanup naming of partition defines. Signed-off-by:
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Dean Nelson authored
Move xpc_check_remote_hb() so it can support both SN2 and UV. Signed-off-by:
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Dean Nelson authored
Add UV support to xpc_remote_memcpy(), which involves interfacing to the GRU driver. Signed-off-by:
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Dean Nelson authored
Get XPC/XPNET to build on x86_64. Trying to modprobe them up on a non-UV or sn2 system will result in a -ENODEV. Signed-off-by:
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Dean Nelson authored
Rename XPC's reserved page's timestamp member to reflect the units of time involved. Signed-off-by:
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Dean Nelson authored
Change sgi-xp to use the standard bitops macros and functions instead of trying to invent its own mechanism. Signed-off-by:
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Dean Nelson authored
Comments in /drivers/misc/sgi-xp has been using '>>>' as a means to draw attention to something that needs to be done or considered. To avoid colliding with git rejects, '>>>' will now be replaced by '!!!' to indicate something to do, and by '???' to indicate something to be considered. Signed-off-by:
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Dean Nelson authored
Add an '_sn2' suffix to some variables found in xpc_sn2.c. Signed-off-by:
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Dean Nelson authored
Make the remote copy buffer an sn2 only item. Signed-off-by:
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Dean Nelson authored
Enable XPNET to support more than 64 partitions. Signed-off-by:
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Dean Nelson authored
Move the allocation of XPC's msgqueues to xpc_sn2.c. Signed-off-by:
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Dean Nelson authored
Replace the AMO_t typedef by a direct reference to 'struct amo'. Signed-off-by:
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Dean Nelson authored
Tie current IPI references to either XPC's notify IRQ or channel control flags. Signed-off-by:
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Dean Nelson authored
Move additional sn2 specific code into xpc_sn2.c. Signed-off-by:
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Dean Nelson authored
Isolate architecture specific code related to XPC's activate IRQ. Signed-off-by:
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Dean Nelson authored
Move xpc_allocate() functionality into xpc_send()/xpc_send_notify() so xpc_allocate() no longer needs to be called by XPNET. Signed-off-by:
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Dean Nelson authored
Change XPC's reserved page timestamp to be based on jiffies. Signed-off-by:
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Dean Nelson authored
Isolate the xpc_vars structure of XPC's reserved page to sn2 only. Signed-off-by:
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Dean Nelson authored
Isolate the xpc_vars_part structure of XPC's reserved page to sn2 only. Signed-off-by:
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Dean Nelson authored
Prepare XPC's reserved page header to work for either sn2 or uv. Signed-off-by:
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Dean Nelson authored
Create a common remote memcpy function that maps to what the hardware booted supports. Signed-off-by:
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Dean Nelson authored
Support runtime selection of the max number of partitions based on the hardware being run on. Signed-off-by:
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Dean Nelson authored
Add a BYTES_PER_WORD #define. Signed-off-by:
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Dean Nelson authored
Define xpSalError reason code. Signed-off-by:
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Dean Nelson authored
Define the is_shub()/is_uv() macros if they've not already been defined. Signed-off-by:
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Jack Steiner authored
Fixes problems identified in a code review: - add comment with high level dscription of the GRU - prepend "gru_" to all global names - delete unused function - couple of trivial bug fixes [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Jack Steiner <steiner@sgi.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by:
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Jack Steiner authored
Driver/misc changes for the GRU driver Signed-off-by:
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