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authorIngo Molnar <mingo@kernel.org>2015-02-26 14:24:50 +0300
committerIngo Molnar <mingo@kernel.org>2015-02-26 14:24:50 +0300
commite9e4e44309f866b115d08ab4a54834008c50a8a4 (patch)
treeae9f91e682a4d6592ef263f30a4a0b1a862b7987 /arch/arm/include/asm/probes.h
parent8a26ce4e544659256349551283414df504889a59 (diff)
parentc517d838eb7d07bbe9507871fab3931deccff539 (diff)
downloadlinux-e9e4e44309f866b115d08ab4a54834008c50a8a4.tar.xz
Merge tag 'v4.0-rc1' into perf/core, to refresh the tree
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/arm/include/asm/probes.h')
-rw-r--r--arch/arm/include/asm/probes.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm/include/asm/probes.h b/arch/arm/include/asm/probes.h
index 806cfe622a9e..1e5b9bb92270 100644
--- a/arch/arm/include/asm/probes.h
+++ b/arch/arm/include/asm/probes.h
@@ -19,6 +19,8 @@
#ifndef _ASM_PROBES_H
#define _ASM_PROBES_H
+#ifndef __ASSEMBLY__
+
typedef u32 probes_opcode_t;
struct arch_probes_insn;
@@ -38,6 +40,19 @@ struct arch_probes_insn {
probes_check_cc *insn_check_cc;
probes_insn_singlestep_t *insn_singlestep;
probes_insn_fn_t *insn_fn;
+ int stack_space;
+ unsigned long register_usage_flags;
+ bool kprobe_direct_exec;
};
+#endif /* __ASSEMBLY__ */
+
+/*
+ * We assume one instruction can consume at most 64 bytes stack, which is
+ * 'push {r0-r15}'. Instructions consume more or unknown stack space like
+ * 'str r0, [sp, #-80]' and 'str r0, [sp, r1]' should be prohibit to probe.
+ * Both kprobe and jprobe use this macro.
+ */
+#define MAX_STACK_SIZE 64
+
#endif