On Tue, 23 Aug 2016 18:31:05 +0200
"Luis R. Rodriguez" wrote:
> On Tue, Aug 23, 2016 at 12:11:40AM +0900, Masami Hiramatsu wrote:
> > On Fri, 19 Aug 2016 14:34:12 -0700
> > mcg...@kernel.org wrote:
> >
> > > From: "Luis R. Rodriguez"
>
.h
> @@ -542,12 +542,4 @@ static __always_inline void __write_once_size(volatile
> void *p, void *res, int s
> (_p1); \
> })
>
> -/* Ignore/forbid kprobes attach on very low level functions marked by this
> attribute: */
> -#ifdef CONFIG_KPROBES
> -# define __kprobes __attribute__((__section__(".kprobes.text")))
> -# define nokprobe_inline __always_inline
> -#else
> -# define __kprobes
> -# define nokprobe_inline inline
> -#endif
> #endif /* __LINUX_COMPILER_H */
> diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
> index 8f6849084248..985ed79ef431 100644
> --- a/include/linux/kprobes.h
> +++ b/include/linux/kprobes.h
> @@ -29,7 +29,7 @@
> * and Prasanna S Panchamukhi
> *added function-return probes.
> */
> -#include /* for __kprobes */
> +#include
> #include
> #include
> #include
> @@ -40,9 +40,9 @@
> #include
> #include
> #include
> +#include
>
> #ifdef CONFIG_KPROBES
> -#include
>
> /* kprobe_status settings */
> #define KPROBE_HIT_ACTIVE0x0001
> @@ -51,6 +51,7 @@
> #define KPROBE_HIT_SSDONE0x0008
>
> #else /* CONFIG_KPROBES */
> +#include
> typedef int kprobe_opcode_t;
> struct arch_specific_insn {
> int dummy;
> @@ -481,18 +482,4 @@ static inline int enable_jprobe(struct jprobe *jp)
> return enable_kprobe(&jp->kp);
> }
>
> -#ifdef CONFIG_KPROBES
> -/*
> - * Blacklist ganerating macro. Specify functions which is not probed
> - * by using this macro.
> - */
> -#define __NOKPROBE_SYMBOL(fname) \
> -static unsigned long __used \
> - __attribute__((section("_kprobe_blacklist"))) \
> - _kbl_addr_##fname = (unsigned long)fname;
> -#define NOKPROBE_SYMBOL(fname) __NOKPROBE_SYMBOL(fname)
> -#else
> -#define NOKPROBE_SYMBOL(fname)
> -#endif
> -
> #endif /* _LINUX_KPROBES_H */
> --
> 2.9.2
>
--
Masami Hiramatsu
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gerous, at least for these APIs we'd better
change
name like as FUNCTABLE_RUN etc. because LINKTABLE can contain not only function
address
but also some data (or address of data).
Thank you,
--
Masami Hiramatsu
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d confirms that
> this fails to work as expected. This was tested with:
This is OK for me, and if you would like to make sure, please use ftrace to
probe
(easier than making new module) and compare debugfs/blacklist which shows
all blacklisted functions, so if all the function names are sa
quot;.spinlock.text", txtname) == 0 ||
> strcmp(".irqentry.text", txtname) == 0 ||
> - strcmp(".kprobes.text", txtname) == 0 ||
> + strcmp(SECTION_RNG(SECTION_TEXT, kprobe), txtname) == 0 ||
> strcmp(".text.unlikely", txtname) == 0;
> }
>
> diff --git a/scripts/recordmcount.pl b/scripts/recordmcount.pl
> index 96e2486a6fc4..f663a7c5d6ab 100755
> --- a/scripts/recordmcount.pl
> +++ b/scripts/recordmcount.pl
> @@ -134,7 +134,7 @@ my %text_sections = (
> ".sched.text" => 1,
> ".spinlock.text" => 1,
> ".irqentry.text" => 1,
> - ".kprobes.text" => 1,
> + ".text.rng.kprobes.any" => 1,
> ".text.unlikely" => 1,
> );
>
> --
> 2.8.4
>
--
Masami Hiramatsu
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de 100644 arch/score/include/asm/sections.h
> create mode 100644 arch/score/include/asm/tables.h
> create mode 100644 arch/sh/include/asm/ranges.h
> create mode 100644 arch/sh/include/asm/tables.h
> create mode 100644 arch/sparc/include/asm/ranges.h
> create mode 100644 arch/sparc/include/asm/tables.h
> create mode 100644 arch/tile/include/asm/ranges.h
> create mode 100644 arch/tile/include/asm/tables.h
> create mode 100644 arch/um/include/asm/ranges.h
> create mode 100644 arch/um/include/asm/tables.h
> create mode 100644 arch/unicore32/include/asm/ranges.h
> create mode 100644 arch/unicore32/include/asm/sections.h
> create mode 100644 arch/unicore32/include/asm/tables.h
> create mode 100644 arch/x86/include/asm/ranges.h
> create mode 100644 arch/x86/include/asm/tables.h
> create mode 100644 arch/xtensa/include/asm/ranges.h
> create mode 100644 arch/xtensa/include/asm/sections.h
> create mode 100644 arch/xtensa/include/asm/tables.h
> create mode 100644 include/asm-generic/ranges.h
> create mode 100644 include/asm-generic/tables.h
> create mode 100644 include/linux/ranges.h
> create mode 100644 include/linux/sections.h
> create mode 100644 include/linux/tables.h
> rename scripts/{module-common.lds => module-common.lds.S} (80%)
> create mode 100644 tools/include/linux/sections.h
>
> --
> 2.8.4
>
--
Masami Hiramatsu
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