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Masami Hiramatsu b4c6c34a53 [PATCH] kprobes: enable booster on the preemptible kernel ... When we are unregistering a kprobe-booster, we can't release its instruction buffer immediately on the preemptive kernel, because some processes might be preempted on the buffer. The freeze_processes() and thaw_processes() functions can clean most of processes up from the buffer. There are still some non-frozen threads who have the PF_NOFREEZE flag. If those threads are sleeping (not preempted) at the known place outside the buffer, we can ensure safety of freeing. However, the processing of this check routine takes a long time. So, this patch introduces the garbage collection mechanism of insn_slot. It also introduces the "dirty" flag to free_insn_slot because of efficiency. The "clean" instruction slots (dirty flag is cleared) are released immediately. But the "dirty" slots which are used by boosted kprobes, are marked as garbages. collect_garbage_slots() will be invoked to release "dirty" slots if there are more than INSNS_PER_PAGE garbage slots or if there are no unused slots. Cc: "Keshavamurthy, Anil S" <anil.s.keshavamurthy@intel.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: "bibo,mao" <bibo.mao@intel.com> Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com> Cc: Yumiko Sugita <yumiko.sugita.yf@hitachi.com> Cc: Satoshi Oshima <soshima@redhat.com> Cc: Hideo Aoki <haoki@redhat.com> Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		18 years ago
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boot	[POWERPC] ps3: add a default zImage target	18 years ago
configs	[POWERPC] Linkstation / kurobox support	18 years ago
kernel	[PATCH] kprobes: enable booster on the preemptible kernel	18 years ago
lib	[POWERPC] Disallow kprobes on emulate_step and branch_taken	19 years ago
math-emu	…
mm	[PATCH] slab: remove kmem_cache_t	18 years ago
oprofile	[POWERPC] ps3: multiplatform build fixes	18 years ago
platforms	[PATCH] slab: remove kmem_cache_t	18 years ago
sysdev	[POWERPC] Replace kmalloc+memset with kzalloc	18 years ago
xmon	[POWERPC] Allow xmon to build on legacy iSeries	18 years ago
.gitignore	[POWERPC] Add files build to .gitignore	18 years ago
Kconfig	[POWERPC] Remove obsolete PPC_52xx and update CLASSIC32 comment	18 years ago
Kconfig.debug	[POWERPC] Allow CONFIG_BOOTX_TEXT on iSeries	18 years ago
Makefile	…