f215d985e9
Sparc64 changes to track kprobe execution on a per-cpu basis. We now track the kprobe state machine independently on each cpu using an arch specific kprobe control block. Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
#ifndef _SPARC64_KPROBES_H
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#define _SPARC64_KPROBES_H
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#include <linux/config.h>
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#include <linux/types.h>
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#include <linux/percpu.h>
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typedef u32 kprobe_opcode_t;
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#define BREAKPOINT_INSTRUCTION 0x91d02070 /* ta 0x70 */
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#define BREAKPOINT_INSTRUCTION_2 0x91d02071 /* ta 0x71 */
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#define MAX_INSN_SIZE 2
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#define JPROBE_ENTRY(pentry) (kprobe_opcode_t *)pentry
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/* Architecture specific copy of original instruction*/
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struct arch_specific_insn {
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/* copy of the original instruction */
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kprobe_opcode_t insn[MAX_INSN_SIZE];
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};
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struct prev_kprobe {
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struct kprobe *kp;
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unsigned int status;
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unsigned long orig_tnpc;
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unsigned long orig_tstate_pil;
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};
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/* per-cpu kprobe control block */
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struct kprobe_ctlblk {
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unsigned long kprobe_status;
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unsigned long kprobe_orig_tnpc;
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unsigned long kprobe_orig_tstate_pil;
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long *jprobe_saved_esp;
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struct pt_regs jprobe_saved_regs;
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struct pt_regs *jprobe_saved_regs_location;
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struct sparc_stackf jprobe_saved_stack;
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struct prev_kprobe prev_kprobe;
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};
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#ifdef CONFIG_KPROBES
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extern int kprobe_exceptions_notify(struct notifier_block *self,
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unsigned long val, void *data);
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#else /* !CONFIG_KPROBES */
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static inline int kprobe_exceptions_notify(struct notifier_block *self,
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unsigned long val, void *data)
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{
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return 0;
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}
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#endif
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#endif /* _SPARC64_KPROBES_H */
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