mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-30 12:16:45 +07:00
376e242429
Introduce NOKPROBE_SYMBOL() macro which builds a kprobes blacklist at kernel build time. The usage of this macro is similar to EXPORT_SYMBOL(), placed after the function definition: NOKPROBE_SYMBOL(function); Since this macro will inhibit inlining of static/inline functions, this patch also introduces a nokprobe_inline macro for static/inline functions. In this case, we must use NOKPROBE_SYMBOL() for the inline function caller. When CONFIG_KPROBES=y, the macro stores the given function address in the "_kprobe_blacklist" section. Since the data structures are not fully initialized by the macro (because there is no "size" information), those are re-initialized at boot time by using kallsyms. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Link: http://lkml.kernel.org/r/20140417081705.26341.96719.stgit@ltc230.yrl.intra.hitachi.co.jp Cc: Alok Kataria <akataria@vmware.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christopher Li <sparse@chrisli.org> Cc: Chris Wright <chrisw@sous-sol.org> Cc: David S. Miller <davem@davemloft.net> Cc: Jan-Simon Möller <dl9pf@gmx.de> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: linux-arch@vger.kernel.org Cc: linux-doc@vger.kernel.org Cc: linux-sparse@vger.kernel.org Cc: virtualization@lists.linux-foundation.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
#ifndef _ASM_X86_ASM_H
|
|
#define _ASM_X86_ASM_H
|
|
|
|
#ifdef __ASSEMBLY__
|
|
# define __ASM_FORM(x) x
|
|
# define __ASM_FORM_RAW(x) x
|
|
# define __ASM_FORM_COMMA(x) x,
|
|
#else
|
|
# define __ASM_FORM(x) " " #x " "
|
|
# define __ASM_FORM_RAW(x) #x
|
|
# define __ASM_FORM_COMMA(x) " " #x ","
|
|
#endif
|
|
|
|
#ifdef CONFIG_X86_32
|
|
# define __ASM_SEL(a,b) __ASM_FORM(a)
|
|
# define __ASM_SEL_RAW(a,b) __ASM_FORM_RAW(a)
|
|
#else
|
|
# define __ASM_SEL(a,b) __ASM_FORM(b)
|
|
# define __ASM_SEL_RAW(a,b) __ASM_FORM_RAW(b)
|
|
#endif
|
|
|
|
#define __ASM_SIZE(inst, ...) __ASM_SEL(inst##l##__VA_ARGS__, \
|
|
inst##q##__VA_ARGS__)
|
|
#define __ASM_REG(reg) __ASM_SEL_RAW(e##reg, r##reg)
|
|
|
|
#define _ASM_PTR __ASM_SEL(.long, .quad)
|
|
#define _ASM_ALIGN __ASM_SEL(.balign 4, .balign 8)
|
|
|
|
#define _ASM_MOV __ASM_SIZE(mov)
|
|
#define _ASM_INC __ASM_SIZE(inc)
|
|
#define _ASM_DEC __ASM_SIZE(dec)
|
|
#define _ASM_ADD __ASM_SIZE(add)
|
|
#define _ASM_SUB __ASM_SIZE(sub)
|
|
#define _ASM_XADD __ASM_SIZE(xadd)
|
|
|
|
#define _ASM_AX __ASM_REG(ax)
|
|
#define _ASM_BX __ASM_REG(bx)
|
|
#define _ASM_CX __ASM_REG(cx)
|
|
#define _ASM_DX __ASM_REG(dx)
|
|
#define _ASM_SP __ASM_REG(sp)
|
|
#define _ASM_BP __ASM_REG(bp)
|
|
#define _ASM_SI __ASM_REG(si)
|
|
#define _ASM_DI __ASM_REG(di)
|
|
|
|
/* Exception table entry */
|
|
#ifdef __ASSEMBLY__
|
|
# define _ASM_EXTABLE(from,to) \
|
|
.pushsection "__ex_table","a" ; \
|
|
.balign 8 ; \
|
|
.long (from) - . ; \
|
|
.long (to) - . ; \
|
|
.popsection
|
|
|
|
# define _ASM_EXTABLE_EX(from,to) \
|
|
.pushsection "__ex_table","a" ; \
|
|
.balign 8 ; \
|
|
.long (from) - . ; \
|
|
.long (to) - . + 0x7ffffff0 ; \
|
|
.popsection
|
|
|
|
# define _ASM_NOKPROBE(entry) \
|
|
.pushsection "_kprobe_blacklist","aw" ; \
|
|
_ASM_ALIGN ; \
|
|
_ASM_PTR (entry); \
|
|
.popsection
|
|
#else
|
|
# define _ASM_EXTABLE(from,to) \
|
|
" .pushsection \"__ex_table\",\"a\"\n" \
|
|
" .balign 8\n" \
|
|
" .long (" #from ") - .\n" \
|
|
" .long (" #to ") - .\n" \
|
|
" .popsection\n"
|
|
|
|
# define _ASM_EXTABLE_EX(from,to) \
|
|
" .pushsection \"__ex_table\",\"a\"\n" \
|
|
" .balign 8\n" \
|
|
" .long (" #from ") - .\n" \
|
|
" .long (" #to ") - . + 0x7ffffff0\n" \
|
|
" .popsection\n"
|
|
/* For C file, we already have NOKPROBE_SYMBOL macro */
|
|
#endif
|
|
|
|
#endif /* _ASM_X86_ASM_H */
|