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* Merge branch 'bzip2-lzma-for-linus' of ↵Linus Torvalds2009-04-052-17/+1
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip * 'bzip2-lzma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip: bzip2/lzma: quiet Kconfig warning for INITRAMFS_COMPRESSION_NONE
| * bzip2/lzma: quiet Kconfig warning for INITRAMFS_COMPRESSION_NONEH. Peter Anvin2009-03-312-17/+1
| | | | | | | | | | | | | | | | | | | | | | | | Impact: quiet Kconfig warning It appears that Kconfig simply has no way to provide defaults for entries that exist inside a conditionalized choice block. Fortunately, it turns out we don't actually ever use CONFIG_INITRAMFS_COMPRESSION_NONE, so we can just drop it for everything outside the choice block. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumaskLinus Torvalds2009-04-0551-635/+615
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-cpumask: (36 commits) cpumask: remove cpumask allocation from idle_balance, fix numa, cpumask: move numa_node_id default implementation to topology.h, fix cpumask: remove cpumask allocation from idle_balance x86: cpumask: x86 mmio-mod.c use cpumask_var_t for downed_cpus x86: cpumask: update 32-bit APM not to mug current->cpus_allowed x86: microcode: cleanup x86: cpumask: use work_on_cpu in arch/x86/kernel/microcode_core.c cpumask: fix CONFIG_CPUMASK_OFFSTACK=y cpu hotunplug crash numa, cpumask: move numa_node_id default implementation to topology.h cpumask: convert node_to_cpumask_map[] to cpumask_var_t cpumask: remove x86 cpumask_t uses. cpumask: use cpumask_var_t in uv_flush_tlb_others. cpumask: remove cpumask_t assignment from vector_allocation_domain() cpumask: make Xen use the new operators. cpumask: clean up summit's send_IPI functions cpumask: use new cpumask functions throughout x86 x86: unify cpu_callin_mask/cpu_callout_mask/cpu_initialized_mask/cpu_sibling_setup_mask cpumask: convert struct cpuinfo_x86's llc_shared_map to cpumask_var_t cpumask: convert node_to_cpumask_map[] to cpumask_var_t x86: unify 32 and 64-bit node_to_cpumask_map ...
| * \ Merge branch 'cpumask-for-linus' of ↵Rusty Russell2009-03-3152-636/+616
| |\ \ | | |/ | |/| | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip Conflicts: arch/x86/include/asm/topology.h drivers/oprofile/buffer_sync.c (Both cases: changed in Linus' tree, removed in Ingo's).
| | * Merge branch 'linus' into cpumask-for-linusIngo Molnar2009-03-305215-206954/+426316
| | |\ | | | | | | | | | | | | | | | | Conflicts: arch/x86/kernel/cpu/common.c
| | * | cpumask: remove cpumask allocation from idle_balance, fixRusty Russell2009-03-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix boot crash Fix typo in the size calculation. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> LKML-Reference: <alpine.DEB.2.00.0903181729360.31583@gandalf.stny.rr.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | numa, cpumask: move numa_node_id default implementation to topology.h, fixStephen Rothwell2009-03-192-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: build fix for powerpc and sparc Today's linux-next build (powerpc allyesconfig) failed like this: > In file included from include/linux/mmzone.h:776, > from include/linux/gfp.h:5, > from include/linux/kmod.h:23, > from include/linux/module.h:14, > from init/version.c:11: > arch/powerpc/include/asm/mmzone.h:32: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'numa_cpumask_lookup_table' Caused by commit 082edb7bf443eb8eda15b482d16ad9dd8137ad24 ("numa, cpumask: move numa_node_id default implementation to topology.h") from the cpus4096 tree which removed the include of linux/topology.h from linux/mmzone.h. Same for sparc64 defconfig. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-b: Rusty Russell <rusty@rustcorp.com.au> Cc: ppc-dev <linuxppc-dev@ozlabs.org> LKML-Reference: <20090319220322.3baa4613.sfr@canb.auug.org.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | cpumask: remove cpumask allocation from idle_balanceRusty Russell2009-03-191-17/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix circular locking Steven reports a circular locking from alloc_cpumask_var doing a wakeup. We get rid of this using the tried-and-true technique of using a per-cpu cpumask_var_t rather than doing an alloc every time. Simpler and more robust than a rare, implicit allocation within an atomic codepath. Reported-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> LKML-Reference: <alpine.DEB.2.00.0903181729360.31583@gandalf.stny.rr.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | x86: cpumask: x86 mmio-mod.c use cpumask_var_t for downed_cpusRusty Russell2009-03-181-6/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, reduce memory usage for CONFIG_CPUMASK_OFFSTACK=y Part of the "getting rid of obsolete cpumask_t" patch: 1) Use cpumask_var_t: this is a pointer if CONFIG_CPUMASK_OFFSTACK=y 2) Call alloc_cpumask_var() on first entry into enter_uniprocessor() 3) Use modern cpumask_* functions. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Pekka Paalanen <pq@iki.fi> LKML-Reference: <200903111633.55952.rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | x86: cpumask: update 32-bit APM not to mug current->cpus_allowedRusty Russell2009-03-181-103/+145
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, avoid cpumask games The APM code wants to run on CPU 0: we create an "on_cpu0" wrapper which uses work_on_cpu() if we're not already on cpu 0. This introduces a new failure mode: -ENOMEM, so we add an explicit err arg and handle Linux-style errnos in apm_err(). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> LKML-Reference: <200903111631.29787.rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | x86: microcode: cleanupIngo Molnar2009-03-183-87/+97
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Dmitry Adamushko <dmitry.adamushko@gmail.com> Cc: Peter Oruba <peter.oruba@amd.com> LKML-Reference: <200903111632.37279.rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | x86: cpumask: use work_on_cpu in arch/x86/kernel/microcode_core.cRusty Russell2009-03-181-45/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: don't play with current's cpumask Straightforward indirection through work_on_cpu(). One change is that the error code from microcode_update_cpu() is now actually plumbed back to microcode_init_cpu(), so now we printk if it fails on cpu hotplug. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Dmitry Adamushko <dmitry.adamushko@gmail.com> Cc: Peter Oruba <peter.oruba@amd.com> LKML-Reference: <200903111632.37279.rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | cpumask: fix CONFIG_CPUMASK_OFFSTACK=y cpu hotunplug crashRusty Russell2009-03-183-3/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: Fix cpu offline when CONFIG_MAXSMP=y Changeset bc9b83dd1f66402b870301c3c7117b9c1484abb4 "cpumask: convert c1e_mask in arch/x86/kernel/process.c to cpumask_var_t" contained a bug: c1e_mask is manipulated even if C1E isn't detected (and hence not allocated). This is simply fixed by checking for NULL (which gcc optimizes out anyway of CONFIG_CPUMASK_OFFSTACK=n, since it knows ce1_mask can never be NULL). In addition, fix a leak where select_idle_routine re-allocates (and re-clears) c1e_mask on every cpu init. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Mike Travis <travis@sgi.com> LKML-Reference: <200903171450.34549.rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | numa, cpumask: move numa_node_id default implementation to topology.hRusty Russell2009-03-133-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, potential bugfix Not sure what changed to expose this, but clearly that numa_node_id() doesn't belong in mmzone.h (the inline in gfp.h is probably overkill, too). In file included from include/linux/topology.h:34, from arch/x86/mm/numa.c:2: /home/rusty/patches-cpumask/linux-2.6/arch/x86/include/asm/topology.h:64:1: warning: "numa_node_id" redefined In file included from include/linux/topology.h:32, from arch/x86/mm/numa.c:2: include/linux/mmzone.h:770:1: warning: this is the location of the previous definition Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Mike Travis <travis@sgi.com> LKML-Reference: <200903132343.37661.rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | cpumask: convert node_to_cpumask_map[] to cpumask_var_tRusty Russell2009-03-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix (CONFIG_MAXSMP=y only) boot crash c032ef60d1aa9af33730b7a35bbea751b131adc1 "cpumask: convert node_to_cpumask_map[] to cpumask_var_t" didn't get this one conversion. There was a compile warning, but I missed it. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Mike Travis <travis@sgi.com> LKML-Reference: <200903132342.42813.rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | Merge branch 'cpus4096' of ↵Ingo Molnar2009-03-1338-336/+246
| | |\ \ | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-x86 into cpus4096
| | | * | cpumask: remove x86 cpumask_t uses.Rusty Russell2009-03-136-13/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup We are removing cpumask_t in favour of struct cpumask: mainly as a marker of what code is now CONFIG_CPUMASK_OFFSTACK-safe. The only non-trivial change here is vector_allocation_domain(): explicitly clear the mask and set the first word, rather than using assignment. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: use cpumask_var_t in uv_flush_tlb_others.Rusty Russell2009-03-131-2/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: remove cpumask_t, reduce per-cpu size for CONFIG_CPUMASK_OFFSTACK=y Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: remove cpumask_t assignment from vector_allocation_domain()Rusty Russell2009-03-134-4/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup It's not legal to do assignments into cpumask_var_t; they will soon be of variable length. So explicitly clear the mask and set the first word, rather than using assignment. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: make Xen use the new operators.Rusty Russell2009-03-131-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup In particular, *map are deprecated, and you have to use the accessors as *mask are const. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> To: Jeremy Fitzhardinge <jeremy@xensource.com>
| | | * | cpumask: clean up summit's send_IPI functionsRusty Russell2009-03-131-7/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, remove cpumask from stack summit_send_IPI_allbutself might as well call default_send_IPI_mask_allbutself_logical(). Also change cpumask_t to struct cpumask and &cpu_online_map to cpu_online_mask while here. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: use new cpumask functions throughout x86Rusty Russell2009-03-139-27/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup 1) &cpu_online_map -> cpu_online_mask 2) first_cpu/next_cpu_nr -> cpumask_first/cpumask_next 3) cpu_*_map manipulation -> init_cpu_* / set_cpu_* Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | x86: unify ↵Rusty Russell2009-03-132-30/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cpu_callin_mask/cpu_callout_mask/cpu_initialized_mask/cpu_sibling_setup_mask Impact: cleanup Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: convert struct cpuinfo_x86's llc_shared_map to cpumask_var_tRusty Russell2009-03-132-8/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: reduce kernel memory usage when CONFIG_CPUMASK_OFFSTACK=y Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: convert node_to_cpumask_map[] to cpumask_var_tRusty Russell2009-03-134-28/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: reduce kernel memory usage when CONFIG_CPUMASK_OFFSTACK=y Straightforward conversion: done for 32 and 64 bit kernels. node_to_cpumask_map is now a cpumask_var_t array. 64-bit used to be a dynamic cpumask_t array, and 32-bit used to be a static cpumask_t array. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | x86: unify 32 and 64-bit node_to_cpumask_mapRusty Russell2009-03-135-94/+83
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup We take the 64-bit code and use it on 32-bit as well. The new file is called mm/numa.c. In a minor cleanup, we use cpu_none_mask instead of declaring a local cpu_mask_none. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: remove x86's node_to_cpumask now everyone uses cpumask_of_nodeRusty Russell2009-03-132-67/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | x86: arch_send_call_function_ipi_maskRusty Russell2009-03-131-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: implement new API We define arch_send_call_function_ipi_mask and generic kernel/smp.c code creates arch_send_call_function_ipi() as a wrapper. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: convert arch/x86/kernel/cpu/mcheck/mce_64.cRusty Russell2009-03-131-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: reduce kernel memory usage when CONFIG_CPUMASK_OFFSTACK=y Simple conversion of mce_device_initialized to cpumask_var_t. We don't check the alloc_cpumask_var() return since it's boot-time only, and the misc_register() in that same function isn't checked. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: x86: convert cpu_sibling_map/cpu_core_map to cpumask_var_tRusty Russell2009-03-139-21/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: reduce per-cpu size for CONFIG_CPUMASK_OFFSTACK=y In most places it's cleaner to use the accessors cpu_sibling_mask() and cpu_core_mask() wrappers which already exist. I couldn't avoid cleaning up the access in oprofile, either. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: convert arch/x86/kernel/nmi.c's backtrace_mask to a cpumask_var_tRusty Russell2009-03-131-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup, reduce memory usage for CONFIG_CPUMASK_OFFSTACK=y I *think* every path calls check_nmi_watchdog before using the watchdog, so that's the right place for the initialization. If that's wrong, we'll get a nice NULL-deref with CONFIG_CPUMASK_OFFSTACK=y, and have uncovered another bug. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: convert c1e_mask in arch/x86/kernel/process.c to cpumask_var_t.Rusty Russell2009-03-131-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: reduce kernel size when CONFIG_CPUMASK_OFFSTACK=y Simple conversion. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: remove obsolete topology_core_siblings and ↵Rusty Russell2009-03-131-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | topology_thread_siblings: x86 Impact: cleanup There were replaced by topology_core_cpumask and topology_thread_cpumask. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: remove cpu_coregroup_map: x86Rusty Russell2009-03-132-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup cpu_coregroup_mask is the New Hotness. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: remove the now-obsoleted pcibus_to_cpumask(): x86Rusty Russell2009-03-132-6/+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 dangerous CPU_MASK_ALL_PTR, &CPU_MASK_ALL.: x86Rusty Russell2009-03-132-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 const struct cpumask *), and remove CPU_MASK_ALL_PTR altogether. 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: Mike Travis <travis@sgi.com>
| | | * | cpumask: replace node_to_cpumask with cpumask_of_node.Rusty Russell2009-03-138-17/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: cleanup node_to_cpumask (and the blecherous node_to_cpumask_ptr which contained a declaration) are replaced now everyone implements cpumask_of_node. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | | * | cpumask: use topology_core_cpumask/topology_thread_cpumask instead of ↵Rusty Russell2009-03-132-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cpu_core_map/cpu_sibling_map Impact: cleanup This is presumably what those definitions are for, and while all archs define cpu_core_map/cpu_sibling map, that's changing (eg. x86 wants to change it to a pointer). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| | * | | Merge commit 'v2.6.29-rc8' into cpus4096Ingo Molnar2009-03-1373-410/+884
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| | * | | Merge branch 'x86/core' into cpus4096Ingo Molnar2009-03-113225-54516/+93891
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| | * | | | fix warning in arch/x86/kernel/cpu/intel_cacheinfo.cIngo Molnar2009-02-261-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fix this warning: arch/x86/kernel/cpu/intel_cacheinfo.c:139: warning: ‘k8_nb_id’ defined but not used arch/x86/kernel/cpu/intel_cacheinfo.c:527: warning: ‘free_cache_attributes’ defined but not used arch/x86/kernel/cpu/intel_cacheinfo.c:538: warning: ‘detect_cache_attributes’ defined but not used Unused variables in the !CONFIG_SYSCTL case. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | x86: intel_cacheinfo: fix compiler warningHiroshi Shimamoto2009-01-271-9/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fix the following warning: CC arch/x86/kernel/cpu/intel_cacheinfo.o arch/x86/kernel/cpu/intel_cacheinfo.c:314: warning: 'cpuid4_cache_lookup' defined but not used Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | sysrq: include interrupt.h instead of irq.hHeiko Carstens2009-01-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix compile error on s390. With "cpumask: update irq_desc to use cpumask_var_t" in linux-next we get this compile bug on s390: CC drivers/char/sysrq.o In file included from drivers/char/sysrq.c:38: include/linux/irq.h: In function 'init_alloc_desc_masks': include/linux/irq.h:442: error: dereferencing pointer to incomplete type Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | cpumask: modifiy oprofile initializationRobert Richter2009-01-223-26/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Delta patch to f7df8ed164996cd2c6aca9674388be6ef78d8b37 for tip/cpus4096. Moved initialization to sync_start()/sync_stop(). No changes needed in buffer_sync.h and oprof.c anymore. Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | | | | Merge ↵Linus Torvalds2009-04-0513-137/+319
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-module-and-param * git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-module-and-param: module: use strstarts() strstarts: helper function for !strncmp(str, prefix, strlen(prefix)) arm: allow usage of string functions in linux/string.h module: don't use stop_machine on module load module: create a request_module_nowait() module: include other structures in module version check module: remove the SHF_ALLOC flag on the __versions section. module: clarify the force-loading taint message. module: Export symbols needed for Ksplice Ksplice: Add functions for walking kallsyms symbols module: remove module_text_address() module: __module_address module: Make find_symbol return a struct kernel_symbol kernel/module.c: fix an unused goto label param: fix charp parameters set via sysfs Fix trivial conflicts in kernel/extable.c manually.
| * | | | | | module: use strstarts()Rusty Russell2009-03-311-7/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: minor cleanup. I'm not going to neaten anyone else's code, but I'm happy to clean up my own. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * | | | | | strstarts: helper function for !strncmp(str, prefix, strlen(prefix))Rusty Russell2009-03-311-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: minor new API ksplice added a "starts_with" function, which seems like a common need. When people open-code it they seem to use fixed numbers rather than strlen, so it's quite a readability win (also, strncmp() almost always wants != 0 on it). So here's strstarts(). Cc: Anders Kaseorg <andersk@mit.edu> Cc: Jeff Arnold <jbarnold@mit.edu> Cc: Tim Abbott <tabbott@mit.edu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * | | | | | arm: allow usage of string functions in linux/string.hRusty Russell2009-03-311-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In introducing a trivial "strstarts()" function in linux/string.h, we hit: arch/arm/boot/compressed/misc.o: In function `strstarts': misc.c:(.text+0x368): undefined reference to `strlen' misc.c:(.text+0x378): undefined reference to `strncmp' This is because of "CFLAGS_misc.o := -Dstatic=" in the Makefile. "static inline strstarts(...)" becomes non-inline, and refers to the other string ops. The simplest workaround is to include asm/string.h. This makes sense anyway, since lib/string.c won't be linked against this so we can't use those functions anyway. Compile tested here. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | | module: don't use stop_machine on module loadRusty Russell2009-03-311-9/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kay Sievers <kay.sievers@vrfy.org> discovered that boot times are slowed by about half a second because all the stop_machine_create() calls, and he only probes about 40 modules (I have 125 loaded on this laptop). We only do stop_machine_create() so we can unlink the module if something goes wrong, but it's overkill (and buggy anyway: if stop_machine_create() fails we still call stop_machine_destroy()). Since we are only protecting against kallsyms (esp. oops) walking the list, synchronize_sched() is sufficient (synchronize_rcu() is probably sufficient, but we're not in a hurry). Kay says of this patch: ... no module takes more than 40 millisecs to link now, most of them are between 3 and 8 millisecs. That looks very different to the numbers without this patch and the otherwise same setup, where we get heavy noise in the traces and many delays of up to 200 millisecs until linking, most of them taking 30+ millisecs. Tested-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
| * | | | | | module: create a request_module_nowait()Arjan van de Ven2009-03-312-7/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There seems to be a common pattern in the kernel where drivers want to call request_module() from inside a module_init() function. Currently this would deadlock. As a result, several drivers go through hoops like scheduling things via kevent, or creating custom work queues (because kevent can deadlock on them). This patch changes this to use a request_module_nowait() function macro instead, which just fires the modprobe off but doesn't wait for it, and thus avoids the original deadlock entirely. On my laptop this already results in one less kernel thread running.. (Includes Jiri's patch to use enum umh_wait) Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (bool-ified) Cc: Jiri Slaby <jirislaby@gmail.com>
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