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* mm: add comment why mark_page_accessed() would be better than pte_mkyoung() ↵KOSAKI Motohiro2009-04-011-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | in follow_page() At first look, mark_page_accessed() in follow_page() seems a bit strange. It seems pte_mkyoung() would be better consistent with other kernel code. However, it is intentional. The commit log said: ------------------------------------------------ commit 9e45f61d69be9024a2e6bef3831fb04d90fac7a8 Author: akpm <akpm> Date: Fri Aug 15 07:24:59 2003 +0000 [PATCH] Use mark_page_accessed() in follow_page() Touching a page via follow_page() counts as a reference so we should be either setting the referenced bit in the pte or running mark_page_accessed(). Altering the pte is tricky because we haven't implemented an atomic pte_mkyoung(). And mark_page_accessed() is better anyway because it has more aging state: it can move the page onto the active list. BKrev: 3f3c8acbplT8FbwBVGtth7QmnqWkIw ------------------------------------------------ The atomic issue is still true nowadays. adding comment help to understand code intention and it would be better. [akpm@linux-foundation.org: clarify text] Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* vmscan: clip swap_cluster_max in shrink_all_memory()Johannes Weiner2009-04-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | shrink_inactive_list() scans in sc->swap_cluster_max chunks until it hits the scan limit it was passed. shrink_inactive_list() { do { isolate_pages(swap_cluster_max) shrink_page_list() } while (nr_scanned < max_scan); } This assumes that swap_cluster_max is not bigger than the scan limit because the latter is checked only after at least one iteration. In shrink_all_memory() sc->swap_cluster_max is initialized to the overall reclaim goal in the beginning but not decreased while reclaim is making progress which leads to subsequent calls to shrink_inactive_list() reclaiming way too much in the one iteration that is done unconditionally. Set sc->swap_cluster_max always to the proper goal before doing shrink_all_zones() shrink_list() shrink_inactive_list(). While the current shrink_all_memory() happily reclaims more than actually requested, this patch fixes it to never exceed the goal: unpatched wanted=10000 reclaimed=13356 wanted=10000 reclaimed=19711 wanted=10000 reclaimed=10289 wanted=10000 reclaimed=17306 wanted=10000 reclaimed=10700 wanted=10000 reclaimed=10004 wanted=10000 reclaimed=13301 wanted=10000 reclaimed=10976 wanted=10000 reclaimed=10605 wanted=10000 reclaimed=10088 wanted=10000 reclaimed=15000 patched wanted=10000 reclaimed=10000 wanted=10000 reclaimed=9599 wanted=10000 reclaimed=8476 wanted=10000 reclaimed=8326 wanted=10000 reclaimed=10000 wanted=10000 reclaimed=10000 wanted=10000 reclaimed=9919 wanted=10000 reclaimed=10000 wanted=10000 reclaimed=10000 wanted=10000 reclaimed=10000 wanted=10000 reclaimed=10000 wanted=10000 reclaimed=9624 wanted=10000 reclaimed=10000 wanted=10000 reclaimed=10000 wanted=8500 reclaimed=8092 wanted=316 reclaimed=316 Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: MinChan Kim <minchan.kim@gmail.com> Acked-by: Nigel Cunningham <ncunningham@crca.org.au> Acked-by: "Rafael J. Wysocki" <rjw@sisk.pl> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: shrink_all_memory(): use sc.nr_reclaimedMinChan Kim2009-04-011-22/+24
| | | | | | | | | | | | | | | | | | | Commit a79311c14eae4bb946a97af25f3e1b17d625985d "vmscan: bail out of direct reclaim after swap_cluster_max pages" moved the nr_reclaimed counter into the scan control to accumulate the number of all reclaimed pages in a reclaim invocation. shrink_all_memory() can use the same mechanism. it increase code consistency and redability. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: MinChan Kim <minchan.kim@gmail.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: don't call mark_page_accessed() in do_swap_page()KOSAKI Motohiro2009-04-011-2/+0
| | | | | | | | | | | | | | | | commit bf3f3bc5e734706730c12a323f9b2068052aa1f0 (mm: don't mark_page_accessed in fault path) only remove the mark_page_accessed() in filemap_fault(). Therefore, swap-backed pages and file-backed pages have inconsistent behavior. mark_page_accessed() should be removed from do_swap_page(). Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Nick Piggin <npiggin@suse.de> Cc: Hugh Dickins <hugh@veritas.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: introduce for_each_populated_zone() macroKOSAKI Motohiro2009-04-016-48/+27
| | | | | | | | | | | | | | | | | | Impact: cleanup In almost cases, for_each_zone() is used with populated_zone(). It's because almost function doesn't need memoryless node information. Therefore, for_each_populated_zone() can help to make code simplify. This patch has no functional change. [akpm@linux-foundation.org: small cleanup] Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Mel Gorman <mel@csn.ul.ie> Reviewed-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* vmscan: rename sc.may_swap to may_unmapJohannes Weiner2009-04-011-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | sc.may_swap does not only influence reclaiming of anon pages but pages mapped into pagetables in general, which also includes mapped file pages. In shrink_page_list(): if (!sc->may_swap && page_mapped(page)) goto keep_locked; For anon pages, this makes sense as they are always mapped and reclaiming them always requires swapping. But mapped file pages are skipped here as well and it has nothing to do with swapping. The real effect of the knob is whether mapped pages are unmapped and reclaimed or not. Rename it to `may_unmap' to have its name match its actual meaning more precisely. Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: MinChan Kim <minchan.kim@gmail.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* get_mm_hiwater_xxx: trivial, s/define/inline/Oleg Nesterov2009-04-011-2/+9
| | | | | | | | | | | Andrew pointed out get_mm_hiwater_xxx() evaluate "mm" argument thrice/twice, make them inline. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Hugh Dickins <hugh@veritas.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* oom_kill: don't call for int_sqrt(0)Cyrill Gorcunov2009-04-011-7/+5
| | | | | | | | | | | There is no need to call for int_sqrt if argument is 0. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Christoph Lameter <cl@linux-foundation.org> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* vmap: remove needless lock and list in vmapMinChan Kim2009-04-011-16/+3
| | | | | | | | | | | | | vmap's dirty_list is unused. It's for optimizing flushing. but Nick didn't write the code yet. so, we don't need it until time as it is needed. This patch removes vmap_block's dirty_list and codes related to it. Signed-off-by: MinChan Kim <minchan.kim@gmail.com> Acked-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: mminit_validate_memmodel_limits(): remove redundant testCyrill Gorcunov2009-04-011-3/+1
| | | | | | | | | | In case if start_pfn overlap the upper bound no need to test end_pfn again since we have it already trimmed. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Reviewed-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: remove struct tty_operations::read_procAlexey Dobriyan2009-04-014-29/+4
| | | | | | | | | | struct tty_operations::proc_fops took it's place and there is one less create_proc_read_entry() user now! Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch xtensa iss console to ->proc_fopsAlexey Dobriyan2009-04-011-13/+16
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch ia64 simserial to ->proc_fopsAlexey Dobriyan2009-04-011-25/+24
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch amiserial to ->proc_fopsAlexey Dobriyan2009-04-011-34/+28
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch ircomm to ->proc_fopsAlexey Dobriyan2009-04-011-118/+138
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch usb-serial to ->proc_fopsAlexey Dobriyan2009-04-011-31/+27
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch serial_core to ->proc_fopsAlexey Dobriyan2009-04-011-40/+36
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch sdio_uart to ->proc_fopsAlexey Dobriyan2009-04-011-32/+30
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch synclinkmp to ->proc_fopsAlexey Dobriyan2009-04-011-40/+34
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch synclink_gt to ->proc_fopsAlexey Dobriyan2009-04-011-40/+34
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch synclink to ->proc_fopsAlexey Dobriyan2009-04-011-59/+39
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch stallion to ->proc_fopsAlexey Dobriyan2009-04-011-76/+50
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch synclink_cs to ->proc_fopsAlexey Dobriyan2009-04-011-39/+34
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch istallion to ->proc_fopsAlexey Dobriyan2009-04-011-69/+52
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch ip2 to ->proc_fopsAlexey Dobriyan2009-04-011-40/+34
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: switch cyclades to ->proc_fopsAlexey Dobriyan2009-04-011-34/+20
| | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proc tty: add struct tty_operations::proc_fopsAlexey Dobriyan2009-04-012-7/+14
| | | | | | | | | | | | | | | Used for gradual switch of TTY drivers from using ->read_proc which helps with gradual switch from ->read_proc for the whole tree. As side effect, fix possible race condition when ->data initialized after PDE is hooked into proc tree. ->proc_fops takes precedence over ->read_proc. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2009-03-3018-70/+68
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: wireless: remove duplicated .ndo_set_mac_address netfilter: xtables: fix IPv6 dependency in the cluster match tg3: Add GRO support. niu: Add GRO support. ucc_geth: Fix use-after-of_node_put() in ucc_geth_probe(). gianfar: Fix use-after-of_node_put() in gfar_of_init(). kernel: remove HIPQUAD() netpoll: store local and remote ip in net-endian netfilter: fix endian bug in conntrack printks dmascc: fix incomplete conversion to network_device_ops gso: Fix support for linear packets skbuff.h: fix missing kernel-doc ni5010: convert to net_device_ops
| * wireless: remove duplicated .ndo_set_mac_addressAlexander Beregalov2009-03-294-5/+0
| | | | | | | | | | | | Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * netfilter: xtables: fix IPv6 dependency in the cluster matchPablo Neira Ayuso2009-03-291-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a dependency with IPv6: ERROR: "__ipv6_addr_type" [net/netfilter/xt_cluster.ko] undefined! This patch adds a function that checks if the higher bits of the address is 0xFF to identify a multicast address, instead of adding a dependency due to __ipv6_addr_type(). I came up with this idea after Patrick McHardy pointed possible problems with runtime module dependencies. Reported-by: Steven Noonan <steven@uplinklabs.net> Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Reported-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * Merge branch 'master' of /home/davem/src/GIT/linux-2.6/David S. Miller2009-03-291572-37942/+97654
| |\
| * | tg3: Add GRO support.David S. Miller2009-03-291-2/+2
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * | niu: Add GRO support.David S. Miller2009-03-291-5/+7
| | | | | | | | | | | | Signed-off-by: David S. Miller <davem@davemloft.net>
| * | ucc_geth: Fix use-after-of_node_put() in ucc_geth_probe().David S. Miller2009-03-291-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | We can't put 'mdio' until after we've used it in the fsl_pq_mdio_bus_name() call. Also fix error return values. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | gianfar: Fix use-after-of_node_put() in gfar_of_init().David S. Miller2009-03-291-1/+1
| | | | | | | | | | | | | | | | | | | | | We can't put 'mdio' until after we've used it in the fsl_pq_mdio_bus_name() call. Signed-off-by: David S. Miller <davem@davemloft.net>
| * | kernel: remove HIPQUAD()Harvey Harrison2009-03-281-12/+0
| | | | | | | | | | | | | | | | | | | | | All users have been removed. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | netpoll: store local and remote ip in net-endianHarvey Harrison2009-03-283-23/+20
| | | | | | | | | | | | | | | | | | | | | | | | Allows for the removal of byteswapping in some places and the removal of HIPQUAD (replaced by %pI4). Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | netfilter: fix endian bug in conntrack printksHarvey Harrison2009-03-281-7/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dcc_ip is treated as a host-endian value in the first printk, but the second printk uses %pI4 which expects a be32. This will cause a mismatch between the debug statement and the warning statement. Treat as a be32 throughout and avoid some byteswapping during some comparisions, and allow another user of HIPQUAD to bite the dust. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | dmascc: fix incomplete conversion to network_device_opsAlexander Beregalov2009-03-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | drivers/net/hamradio/dmascc.c:587: error: 'struct net_device' has no member named 'set_mac_address' Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | gso: Fix support for linear packetsHerbert Xu2009-03-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When GRO/frag_list support was added to GSO, I made an error which broke the support for segmenting linear GSO packets (GSO packets are normally non-linear in the payload). These days most of these packets are constructed by the tun driver, which prefers to allocate linear memory if possible. This is fixed in the latest kernel, but for 2.6.29 and earlier it is still the norm. Therefore this bug causes failures with GSO when used with tun in 2.6.29. Reported-by: James Huang <jamesclhuang@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | skbuff.h: fix missing kernel-docRandy Dunlap2009-03-281-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Add missing struct field to fix kernel-doc warning: Warning(include/linux/skbuff.h:182): No description found for parameter 'flags' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | ni5010: convert to net_device_opsAlexander Beregalov2009-03-281-6/+12
| | | | | | | | | | | | | | | Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6Linus Torvalds2009-03-3015-58/+72
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6: sparc64: Fix reset hangs on Niagara systems. cpumask: use mm_cpumask() wrapper: sparc cpumask: remove dangerous CPU_MASK_ALL_PTR, &CPU_MASK_ALL.: sparc cpumask: remove the now-obsoleted pcibus_to_cpumask(): sparc cpumask: remove cpu_coregroup_map: sparc cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: sparc cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: sparc64 cpumask: Use accessors code.: sparc64 cpumask: Use accessors code: sparc cpumask: arch_send_call_function_ipi_mask: sparc cpumask: Use smp_call_function_many(): sparc64
| * \ \ Merge branch 'master' of ↵David S. Miller2009-03-2914-57/+50
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ssh://master.kernel.org/home/ftp/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask-for-sparc Conflicts: arch/sparc/kernel/smp_64.c
| | * | | cpumask: use mm_cpumask() wrapper: sparcRusty Russell2009-03-164-18/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Makes code futureproof against the impending change to mm->cpu_vm_mask. It's also a chance to use the new cpumask_ ops which take a pointer (the older ones are deprecated, but there's no hurry for arch code). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * | | cpumask: remove dangerous CPU_MASK_ALL_PTR, &CPU_MASK_ALL.: sparcRusty Russell2009-03-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup (Thanks to Al Viro for reminding me of this, via Ingo) CPU_MASK_ALL is the (deprecated) "all bits set" cpumask, defined as so: #define CPU_MASK_ALL (cpumask_t) { { ... } } Taking the address of such a temporary is questionable at best, unfortunately 321a8e9d (cpumask: add CPU_MASK_ALL_PTR macro) added CPU_MASK_ALL_PTR: #define CPU_MASK_ALL_PTR (&CPU_MASK_ALL) Which formalizes this practice. One day gcc could bite us over this usage (though we seem to have gotten away with it so far). So replace everywhere which used &CPU_MASK_ALL or CPU_MASK_ALL_PTR with the modern "cpu_all_mask" (a real struct cpumask *), and remove CPU_MASK_ALL_PTR altogether. Also remove the confusing and deprecated large-NR_CPUS-only "cpu_mask_all". Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Ingo Molnar <mingo@elte.hu> Reported-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Mike Travis <travis@sgi.com>
| | * | | cpumask: remove the now-obsoleted pcibus_to_cpumask(): sparcRusty Russell2009-03-161-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: reduce stack usage for large NR_CPUS cpumask_of_pcibus() is the new version. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * | | cpumask: remove cpu_coregroup_map: sparcRusty Russell2009-03-161-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup cpu_coregroup_mask is the New Hotness. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * | | cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: sparcRusty Russell2009-03-164-17/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, futureproof In fact, all cpumask ops will only be valid (in general) for bit numbers < nr_cpu_ids. So use that instead of NR_CPUS in various places. This is always safe: no cpu number can be >= nr_cpu_ids, and nr_cpu_ids is initialized to NR_CPUS at boot. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com> Acked-by: Ingo Molnar <mingo@elte.hu>
| | * | | cpumask: prepare for iterators to only go to nr_cpu_ids/nr_cpumask_bits.: ↵Rusty Russell2009-03-163-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sparc64 Impact: cleanup, futureproof In fact, all cpumask ops will only be valid (in general) for bit numbers < nr_cpu_ids. So use that instead of NR_CPUS in various places. This is always safe: no cpu number can be >= nr_cpu_ids, and nr_cpu_ids is initialized to NR_CPUS at boot. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com> Acked-by: Ingo Molnar <mingo@elte.hu>
generated by cgit v1.1 at 2024-10-28 02:31:16 +0000