mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 00:45:13 +07:00
7d134b2ce6
Often all is needed is these small helpers, instead of compiler.h or a full kprobes.h. This is important for asm helpers, in fact even some asm/kprobes.h make use of these helpers... instead just keep a generic asm file with helpers useful for asm code with the least amount of clutter as possible. Likewise we need now to also address what to do about this file for both when architectures have CONFIG_HAVE_KPROBES, and when they do not. Then for when architectures have CONFIG_HAVE_KPROBES but have disabled CONFIG_KPROBES. Right now most asm/kprobes.h do not have guards against CONFIG_KPROBES, this means most architecture code cannot include asm/kprobes.h safely. Correct this and add guards for architectures missing them. Additionally provide architectures that not have kprobes support with the default asm-generic solution. This lets us force asm/kprobes.h on the header include/linux/kprobes.h always, but most importantly we can now safely include just asm/kprobes.h on architecture code without bringing the full kitchen sink of header files. Two architectures already provided a guard against CONFIG_KPROBES on its kprobes.h: sh, arch. The rest of the architectures needed gaurds added. We avoid including any not-needed headers on asm/kprobes.h unless kprobes have been enabled. In a subsequent atomic change we can try now to remove compiler.h from include/linux/kprobes.h. During this sweep I've also identified a few architectures defining a common macro needed for both kprobes and ftrace, that of the definition of the breakput instruction up. Some refer to this as BREAKPOINT_INSTRUCTION. This must be kept outside of the #ifdef CONFIG_KPROBES guard. [mcgrof@kernel.org: fix arm64 build] Link: http://lkml.kernel.org/r/CAB=NE6X1WMByuARS4mZ1g9+W=LuVBnMDnh_5zyN0CLADaVh=Jw@mail.gmail.com [sfr@canb.auug.org.au: fixup for kprobes declarations moving] Link: http://lkml.kernel.org/r/20170214165933.13ebd4f4@canb.auug.org.au Link: http://lkml.kernel.org/r/20170203233139.32682-1-mcgrof@kernel.org Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
#ifndef _SPARC64_KPROBES_H
|
|
#define _SPARC64_KPROBES_H
|
|
|
|
#include <asm-generic/kprobes.h>
|
|
|
|
#define BREAKPOINT_INSTRUCTION 0x91d02070 /* ta 0x70 */
|
|
#define BREAKPOINT_INSTRUCTION_2 0x91d02071 /* ta 0x71 */
|
|
|
|
#ifdef CONFIG_KPROBES
|
|
#include <linux/types.h>
|
|
#include <linux/percpu.h>
|
|
|
|
typedef u32 kprobe_opcode_t;
|
|
|
|
#define MAX_INSN_SIZE 2
|
|
|
|
#define kretprobe_blacklist_size 0
|
|
|
|
#define arch_remove_kprobe(p) do {} while (0)
|
|
|
|
#define flush_insn_slot(p) \
|
|
do { flushi(&(p)->ainsn.insn[0]); \
|
|
flushi(&(p)->ainsn.insn[1]); \
|
|
} while (0)
|
|
|
|
void kretprobe_trampoline(void);
|
|
|
|
/* Architecture specific copy of original instruction*/
|
|
struct arch_specific_insn {
|
|
/* copy of the original instruction */
|
|
kprobe_opcode_t insn[MAX_INSN_SIZE];
|
|
};
|
|
|
|
struct prev_kprobe {
|
|
struct kprobe *kp;
|
|
unsigned long status;
|
|
unsigned long orig_tnpc;
|
|
unsigned long orig_tstate_pil;
|
|
};
|
|
|
|
/* per-cpu kprobe control block */
|
|
struct kprobe_ctlblk {
|
|
unsigned long kprobe_status;
|
|
unsigned long kprobe_orig_tnpc;
|
|
unsigned long kprobe_orig_tstate_pil;
|
|
struct pt_regs jprobe_saved_regs;
|
|
struct prev_kprobe prev_kprobe;
|
|
};
|
|
|
|
int kprobe_exceptions_notify(struct notifier_block *self,
|
|
unsigned long val, void *data);
|
|
int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
|
|
asmlinkage void __kprobes kprobe_trap(unsigned long trap_level,
|
|
struct pt_regs *regs);
|
|
|
|
#endif /* CONFIG_KPROBES */
|
|
#endif /* _SPARC64_KPROBES_H */
|