- 06 Mar, 2009 6 commits
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Masami Hiramatsu authored
Use fixmaps instead of vmap/vunmap in text_poke() for avoiding page allocation and delayed unmapping. At the result of above change, text_poke() becomes atomic and can be called from stop_machine() etc. Signed-off-by:
Masami Hiramatsu <mhiramat@redhat.com> Acked-by:
Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> LKML-Reference: <49B14352.2040705@redhat.com> Signed-off-by:
Ingo Molnar <mingo@elte.hu>
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Masami Hiramatsu authored
Use the mutual exclusion provided by the text edit lock in alternatives code. Since alternative_smp_* will be called from module init code, etc, we'd better protect it from other subsystems. Signed-off-by:
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Mathieu Desnoyers authored
Use the mutual exclusion provided by the text edit lock in the kprobes code. It allows coherent manipulation of the kernel code by other subsystems. Changelog: Move the kernel_text_lock/unlock out of the for loops. Use text_mutex directly instead of a function. Remove whitespace modifications. (note : kprobes_mutex is always taken outside of text_mutex) Signed-off-by:
Ananth N Mavinakayanahalli <ananth@in.ibm.com> Acked-by:
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Mathieu Desnoyers authored
This is an architecture independant synchronization around kernel text modifications through use of a global mutex. A mutex has been chosen so that kprobes, the main user of this, can sleep during memory allocation between the memory read of the instructions it must replace and the memory write of the breakpoint. Other user of this interface: immediate values. Paravirt and alternatives are always done when SMP is inactive, so there is no need to use locks. Signed-off-by:
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Ingo Molnar authored
Conflicts: arch/x86/Kconfig block/blktrace.c kernel/irq/handle.c Semantic conflict: kernel/trace/blktrace.c Signed-off-by: -
Ingo Molnar authored
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- 05 Mar, 2009 34 commits
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Ingo Molnar authored
Clean up menu structure, introduce TRACING_SUPPORT switch that signals whether an architecture supports various instrumentation mechanisms. Signed-off-by: -
Ingo Molnar authored
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Ingo Molnar authored
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Ingo Molnar authored
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Ingo Molnar authored
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Ingo Molnar authored
Conflicts: arch/x86/include/asm/fixmap_64.h Semantic merge: arch/x86/include/asm/fixmap.h Signed-off-by: -
Ingo Molnar authored
Make ack_APIC_irq() build on !SMP && !APIC too. Cc: Dimitri Sivanich <sivanich@sgi.com> LKML-Reference: <20090304185605.GA24419@sgi.com> Signed-off-by: -
Jeremy Fitzhardinge authored
Impact: cleanup, micro-optimization Pre-initialize boot_cpu_data.x86_phys_bits to a reasonable default to remove the use of system_state tests in __virt_addr_valid() and __phys_addr(). Signed-off-by:
Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by:
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Jeremy Fitzhardinge authored
Rather than relying on the ever-unreliable system_state, add a specific __vmalloc_start_set flag to indicate whether the vmalloc area has meaningful boundaries yet, and use that in x86-32's __phys_addr and __virt_addr_valid. Signed-off-by:
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Jeremy Fitzhardinge authored
gcc 3.2.2 reports: In file included from /usr/src/all/linux-next/arch/x86/include/asm/page.h:8, from /usr/src/all/linux-next/arch/x86/include/asm/processor.h:18, from /usr/src/all/linux-next/arch/x86/include/asm/atomic_32.h:6, from /usr/src/all/linux-next/arch/x86/include/asm/atomic.h:2, from include/linux/crypto.h:20, from arch/x86/kernel/asm-offsets_32.c:7, from arch/x86/kernel/asm-offsets.c:2: /usr/src/all/linux-next/arch/x86/include/asm/page_types.h:54: warning: parameter has incomplete type /usr/src/all/linux-next/arch/x86/include/asm/page_types.h:56: warning: parameter has incomplete type In file included from /usr/src/all/linux-next/arch/x86/include/asm/page.h:8, from /usr/src/all/linux-next/arch/x86/include/asm/processor.h:18, from include/linux/prefetch.h:14, from include/linux/list.h:6, from include/linux/module.h:9, from init/main.c:13: /usr/src/all/linux-next/arch/x86/include/asm/page_types.h:54: warning: parameter has incomplete type /usr/src/all/linux-next/arch/x86/include/asm/page_types.h:56: warning: parameter has incomplete type This is a bogus warning, but moving the pat-related functions into asm/pat.h and including asm/pgtable_types.h should fix it. Signed-off-by:Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by:
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Ingo Molnar authored
Impact: build fix Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <1236257708-27269-14-git-send-email-penberg@cs.helsinki.fi> Signed-off-by: -
Pekka Enberg authored
Impact: cleanup Signed-off-by:
Pekka Enberg <penberg@cs.helsinki.fi> Cc: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <1236257708-27269-17-git-send-email-penberg@cs.helsinki.fi> Signed-off-by:
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Pekka Enberg authored
Impact: cleanup In preparation for moving the function declaration to a header file, unify 32-bit and 64-bit signatures. Signed-off-by:
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Pekka Enberg authored
Impact: cleanup The table_start, table_end, and table_top are too generic for global namespace so rename them to be more specific. Signed-off-by:
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Pekka Enberg authored
Impact: cleanup This patch moves the init_memory_mapping() function to common mm/init.c. Signed-off-by:
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Pekka Enberg authored
Impact: cleanup This patch adds an empty static inline init_gbpages() for the 32-bit version of init_memory_mapping() making both versions identical. Signed-off-by:
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Pekka Enberg authored
Impact: cleanup As a trivial preparation for moving common code to arc/x86/mm/init.c, ifdef the 32-bit and 64-bit versions of NR_RANGE_MR. Signed-off-by:
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Pekka Enberg authored
Impact: cleanup To reduce the diff between the 32-bit and 64-bit versions of init_memory_mapping(), ifdef configuration specific pfn setup code in the function. Signed-off-by:
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Pekka Enberg authored
Impact: cleanup To reduce the diff between the 32-bit and 64-bit versions of init_memory_mapping(), ifdef configuration specific setup code in the function. Signed-off-by:
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Pekka Enberg authored
Impact: cleanup This patch adds a sanity check to the 32-bit version of init_memory_mapping() to reduce the diff to the 64-bit version. Signed-off-by:
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Pekka Enberg authored
Impact: cleanup The 64-bit version of init_memory_mapping() uses the last mapped address returned from kernel_physical_mapping_init() whereas the 32-bit version doesn't. This patch adds relevant ifdefs to both versions of the function to reduce the diff between them. Signed-off-by:
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Pekka Enberg authored
Impact: cleanup This patch renames after_init_bootmem to after_bootmem in mm/init_32.c to reduce the diff to the 64-bit version of of init_memory_mapping(). Signed-off-by:
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Pekka Enberg authored
Impact: cleanup The save_mr() function already checks that start_pfn is less than end_pfn so we can remove the unnecessary check which reduces the diff between the 32-bit and the 64-bit versions of init_memory_mapping(). Signed-off-by:
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Pekka Enberg authored
Impact: cleanup Enabling NX, PSE, and PGE are only required on 32-bit so ifdef them in both versions of the function. Signed-off-by:
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Pekka Enberg authored
Impact: cleanup This patch moves pgd_base out of init_memory_mapping() to reduce the diff between the 32-bit version and the 64-bit version of the function. Signed-off-by:
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Pekka Enberg authored
Impact: cleanup There are some minor differences between the 32-bit and 64-bit find_early_table_space() functions. This patch wraps those differences under CONFIG_X86_32 to make the function identical on both configurations. Signed-off-by:
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Pekka Enberg authored
Impact: cleanup To reduce the diff between the 32-bit and 64-bit versions of init_memory_mapping(), add gbpages support to the 32-bit version. Signed-off-by:
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Pekka Enberg authored
Impact: cleanup To reduce the diff between the 32-bit and 64-bit versions of init_memory_mapping(), fix up all trivial issues. Signed-off-by:
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Frederic Weisbecker authored
Impact: decrease hangs risks with the graph tracer on slow systems Since the function graph tracer can spend too much time on timer interrupts, it's better now to use the more lightweight local clock. Anyway, the function graph traces are more reliable on a per cpu trace. Signed-off-by:
Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> LKML-Reference: <49af243d.06e9300a.53ad.ffff840c@mx.google.com> Signed-off-by:
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Dimitri Sivanich authored
Fix non-smp build of uv_time.c. Signed-off-by:
Dimitri Sivanich <sivanich@sgi.com> LKML-Reference: <20090304220246.GC6288@sgi.com> Signed-off-by:
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Yinghai Lu authored
[ mingo: small edits and extensions. ] Signed-off-by:
Yinghai Lu <yinghai@kernel.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Greg KH <gregkh@suse.de> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Sarah Sharp <sarah.a.sharp@intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <49AF18B7.4050305@kernel.org> Signed-off-by:
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Ingo Molnar authored
Make common utility functions such as trace_printk() and tracing_start()/tracing_stop() generally available to kernel code. Cc: Steven Rostedt <srostedt@redhat.com> Signed-off-by: -
Ingo Molnar authored
Impact: cleanup Use a more generic name - this also allows the prototype to move to kernel.h and be generally available to kernel developers who want to do some quick tracing. Signed-off-by: -
Ingo Molnar authored
Merge branch 'tip/tracing/ftrace' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/ftrace
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