* [PATCH][bugfix] kprobes: fix module compilation error with CONFIG_KPROBES=n
@ 2009-01-05 22:23 Masami Hiramatsu
2009-01-06 16:39 ` Masami Hiramatsu
2009-01-14 8:32 ` Andrew Morton
0 siblings, 2 replies; 6+ messages in thread
From: Masami Hiramatsu @ 2009-01-05 22:23 UTC (permalink / raw)
To: Ananth N Mavinakayanahalli, Andrew Morton
Cc: Jim Keniston, David Miller, LKML, systemtap-ml
Define kprobes related data structures even if CONFIG_KPROBES is not set.
This fixes compilation errors which occur if CONFIG_KPROBES is not set, in
kprobe using modules.
Reviewed-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
---
include/linux/kprobes.h | 45 +++++++++++++++++++++++----------------------
1 file changed, 23 insertions(+), 22 deletions(-)
Index: 2.6.28/include/linux/kprobes.h
===================================================================
--- 2.6.28.orig/include/linux/kprobes.h
+++ 2.6.28/include/linux/kprobes.h
@@ -37,9 +37,9 @@
#include <linux/spinlock.h>
#include <linux/rcupdate.h>
#include <linux/mutex.h>
+#include <asm/kprobes.h>
#ifdef CONFIG_KPROBES
-#include <asm/kprobes.h>
/* kprobe_status settings */
#define KPROBE_HIT_ACTIVE 0x00000001
@@ -49,6 +49,9 @@
/* Attach to insert probes on any functions which should be ignored*/
#define __kprobes __attribute__((__section__(".kprobes.text"))) notrace
+#else /* CONFIG_KPROBES */
+#define __kprobes notrace
+#endif /* CONFIG_KPROBES */
struct kprobe;
struct pt_regs;
@@ -131,23 +134,6 @@ struct jprobe {
/* For backward compatibility with old code using JPROBE_ENTRY() */
#define JPROBE_ENTRY(handler) (handler)
-DECLARE_PER_CPU(struct kprobe *, current_kprobe);
-DECLARE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
-
-#ifdef CONFIG_KRETPROBES
-extern void arch_prepare_kretprobe(struct kretprobe_instance *ri,
- struct pt_regs *regs);
-extern int arch_trampoline_kprobe(struct kprobe *p);
-#else /* CONFIG_KRETPROBES */
-static inline void arch_prepare_kretprobe(struct kretprobe *rp,
- struct pt_regs *regs)
-{
-}
-static inline int arch_trampoline_kprobe(struct kprobe *p)
-{
- return 0;
-}
-#endif /* CONFIG_KRETPROBES */
/*
* Function-return probe -
* Note:
@@ -188,6 +174,25 @@ struct kprobe_blackpoint {
unsigned long range;
};
+#ifdef CONFIG_KPROBES
+DECLARE_PER_CPU(struct kprobe *, current_kprobe);
+DECLARE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
+
+#ifdef CONFIG_KRETPROBES
+extern void arch_prepare_kretprobe(struct kretprobe_instance *ri,
+ struct pt_regs *regs);
+extern int arch_trampoline_kprobe(struct kprobe *p);
+#else /* CONFIG_KRETPROBES */
+static inline void arch_prepare_kretprobe(struct kretprobe *rp,
+ struct pt_regs *regs)
+{
+}
+static inline int arch_trampoline_kprobe(struct kprobe *p)
+{
+ return 0;
+}
+#endif /* CONFIG_KRETPROBES */
+
extern struct kretprobe_blackpoint kretprobe_blacklist[];
static inline void kretprobe_assert(struct kretprobe_instance *ri,
@@ -264,10 +269,6 @@ void recycle_rp_inst(struct kretprobe_in
#else /* CONFIG_KPROBES */
-#define __kprobes notrace
-struct jprobe;
-struct kretprobe;
-
static inline struct kprobe *get_kprobe(void *addr)
{
return NULL;
--
Masami Hiramatsu
Software Engineer
Hitachi Computer Products (America) Inc.
Software Solutions Division
e-mail: mhiramat@redhat.com
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH][bugfix] kprobes: fix module compilation error with CONFIG_KPROBES=n
2009-01-05 22:23 [PATCH][bugfix] kprobes: fix module compilation error with CONFIG_KPROBES=n Masami Hiramatsu
@ 2009-01-06 16:39 ` Masami Hiramatsu
2009-01-12 22:51 ` Andrew Morton
2009-01-14 8:32 ` Andrew Morton
1 sibling, 1 reply; 6+ messages in thread
From: Masami Hiramatsu @ 2009-01-06 16:39 UTC (permalink / raw)
To: Ananth N Mavinakayanahalli, Andrew Morton
Cc: Jim Keniston, David Miller, LKML, systemtap-ml
Oops, this patch was actually for -mm tree.
Masami Hiramatsu wrote:
> Define kprobes related data structures even if CONFIG_KPROBES is not set.
> This fixes compilation errors which occur if CONFIG_KPROBES is not set, in
> kprobe using modules.
>
> Reviewed-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
> Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
> ---
> include/linux/kprobes.h | 45 +++++++++++++++++++++++----------------------
> 1 file changed, 23 insertions(+), 22 deletions(-)
>
> Index: 2.6.28/include/linux/kprobes.h
> ===================================================================
> --- 2.6.28.orig/include/linux/kprobes.h
> +++ 2.6.28/include/linux/kprobes.h
> @@ -37,9 +37,9 @@
> #include <linux/spinlock.h>
> #include <linux/rcupdate.h>
> #include <linux/mutex.h>
> +#include <asm/kprobes.h>
>
> #ifdef CONFIG_KPROBES
> -#include <asm/kprobes.h>
>
> /* kprobe_status settings */
> #define KPROBE_HIT_ACTIVE 0x00000001
> @@ -49,6 +49,9 @@
>
> /* Attach to insert probes on any functions which should be ignored*/
> #define __kprobes __attribute__((__section__(".kprobes.text"))) notrace
> +#else /* CONFIG_KPROBES */
> +#define __kprobes notrace
> +#endif /* CONFIG_KPROBES */
>
> struct kprobe;
> struct pt_regs;
> @@ -131,23 +134,6 @@ struct jprobe {
> /* For backward compatibility with old code using JPROBE_ENTRY() */
> #define JPROBE_ENTRY(handler) (handler)
>
> -DECLARE_PER_CPU(struct kprobe *, current_kprobe);
> -DECLARE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
> -
> -#ifdef CONFIG_KRETPROBES
> -extern void arch_prepare_kretprobe(struct kretprobe_instance *ri,
> - struct pt_regs *regs);
> -extern int arch_trampoline_kprobe(struct kprobe *p);
> -#else /* CONFIG_KRETPROBES */
> -static inline void arch_prepare_kretprobe(struct kretprobe *rp,
> - struct pt_regs *regs)
> -{
> -}
> -static inline int arch_trampoline_kprobe(struct kprobe *p)
> -{
> - return 0;
> -}
> -#endif /* CONFIG_KRETPROBES */
> /*
> * Function-return probe -
> * Note:
> @@ -188,6 +174,25 @@ struct kprobe_blackpoint {
> unsigned long range;
> };
>
> +#ifdef CONFIG_KPROBES
> +DECLARE_PER_CPU(struct kprobe *, current_kprobe);
> +DECLARE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk);
> +
> +#ifdef CONFIG_KRETPROBES
> +extern void arch_prepare_kretprobe(struct kretprobe_instance *ri,
> + struct pt_regs *regs);
> +extern int arch_trampoline_kprobe(struct kprobe *p);
> +#else /* CONFIG_KRETPROBES */
> +static inline void arch_prepare_kretprobe(struct kretprobe *rp,
> + struct pt_regs *regs)
> +{
> +}
> +static inline int arch_trampoline_kprobe(struct kprobe *p)
> +{
> + return 0;
> +}
> +#endif /* CONFIG_KRETPROBES */
> +
> extern struct kretprobe_blackpoint kretprobe_blacklist[];
>
> static inline void kretprobe_assert(struct kretprobe_instance *ri,
> @@ -264,10 +269,6 @@ void recycle_rp_inst(struct kretprobe_in
>
> #else /* CONFIG_KPROBES */
>
> -#define __kprobes notrace
> -struct jprobe;
> -struct kretprobe;
> -
> static inline struct kprobe *get_kprobe(void *addr)
> {
> return NULL;
--
Masami Hiramatsu
Software Engineer
Hitachi Computer Products (America) Inc.
Software Solutions Division
e-mail: mhiramat@redhat.com
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH][bugfix] kprobes: fix module compilation error with CONFIG_KPROBES=n
2009-01-06 16:39 ` Masami Hiramatsu
@ 2009-01-12 22:51 ` Andrew Morton
2009-01-13 1:34 ` Masami Hiramatsu
0 siblings, 1 reply; 6+ messages in thread
From: Andrew Morton @ 2009-01-12 22:51 UTC (permalink / raw)
To: Masami Hiramatsu; +Cc: ananth, jkenisto, davem, linux-kernel, systemtap
On Tue, 06 Jan 2009 11:39:39 -0500
Masami Hiramatsu <mhiramat@redhat.com> wrote:
> Masami Hiramatsu wrote:
>
> > Define kprobes related data structures even if CONFIG_KPROBES is not set.
> > This fixes compilation errors which occur if CONFIG_KPROBES is not set, in
> > kprobe using modules.
> >
>
> Oops, this patch was actually for -mm tree.
>
I assume it's needed in mainline now.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH][bugfix] kprobes: fix module compilation error with CONFIG_KPROBES=n
2009-01-12 22:51 ` Andrew Morton
@ 2009-01-13 1:34 ` Masami Hiramatsu
0 siblings, 0 replies; 6+ messages in thread
From: Masami Hiramatsu @ 2009-01-13 1:34 UTC (permalink / raw)
To: Andrew Morton; +Cc: ananth, jkenisto, davem, linux-kernel, systemtap
Andrew Morton wrote:
> On Tue, 06 Jan 2009 11:39:39 -0500
> Masami Hiramatsu <mhiramat@redhat.com> wrote:
>
>> Masami Hiramatsu wrote:
>>
>>> Define kprobes related data structures even if CONFIG_KPROBES is not set.
>>> This fixes compilation errors which occur if CONFIG_KPROBES is not set, in
>>> kprobe using modules.
>>>
>> Oops, this patch was actually for -mm tree.
>>
>
> I assume it's needed in mainline now.
Agreed.
Thank you,
--
Masami Hiramatsu
Software Engineer
Hitachi Computer Products (America) Inc.
Software Solutions Division
e-mail: mhiramat@redhat.com
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH][bugfix] kprobes: fix module compilation error with CONFIG_KPROBES=n
2009-01-05 22:23 [PATCH][bugfix] kprobes: fix module compilation error with CONFIG_KPROBES=n Masami Hiramatsu
2009-01-06 16:39 ` Masami Hiramatsu
@ 2009-01-14 8:32 ` Andrew Morton
2009-01-14 16:31 ` Masami Hiramatsu
1 sibling, 1 reply; 6+ messages in thread
From: Andrew Morton @ 2009-01-14 8:32 UTC (permalink / raw)
To: Masami Hiramatsu
Cc: Ananth N Mavinakayanahalli, Jim Keniston, David Miller, LKML,
systemtap-ml
On Mon, 05 Jan 2009 17:23:05 -0500 Masami Hiramatsu <mhiramat@redhat.com> wrote:
> Define kprobes related data structures even if CONFIG_KPROBES is not set.
> This fixes compilation errors which occur if CONFIG_KPROBES is not set, in
> kprobe using modules.
>
> Reviewed-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
> Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
> ---
> include/linux/kprobes.h | 45 +++++++++++++++++++++++----------------------
> 1 file changed, 23 insertions(+), 22 deletions(-)
>
> Index: 2.6.28/include/linux/kprobes.h
> ===================================================================
> --- 2.6.28.orig/include/linux/kprobes.h
> +++ 2.6.28/include/linux/kprobes.h
> @@ -37,9 +37,9 @@
> #include <linux/spinlock.h>
> #include <linux/rcupdate.h>
> #include <linux/mutex.h>
> +#include <asm/kprobes.h>
>
> #ifdef CONFIG_KPROBES
> -#include <asm/kprobes.h>
>
The above change breaks alpha, and any other architecture which has no
asm/kprobes.h.
I undid that change, but maybe that rebroke things?
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH][bugfix] kprobes: fix module compilation error with CONFIG_KPROBES=n
2009-01-14 8:32 ` Andrew Morton
@ 2009-01-14 16:31 ` Masami Hiramatsu
0 siblings, 0 replies; 6+ messages in thread
From: Masami Hiramatsu @ 2009-01-14 16:31 UTC (permalink / raw)
To: Andrew Morton
Cc: Ananth N Mavinakayanahalli, Jim Keniston, David Miller, LKML,
systemtap-ml
Andrew Morton wrote:
> On Mon, 05 Jan 2009 17:23:05 -0500 Masami Hiramatsu <mhiramat@redhat.com> wrote:
>
>> Define kprobes related data structures even if CONFIG_KPROBES is not set.
>> This fixes compilation errors which occur if CONFIG_KPROBES is not set, in
>> kprobe using modules.
>>
>> Reviewed-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
>> Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
>> ---
>> include/linux/kprobes.h | 45 +++++++++++++++++++++++----------------------
>> 1 file changed, 23 insertions(+), 22 deletions(-)
>>
>> Index: 2.6.28/include/linux/kprobes.h
>> ===================================================================
>> --- 2.6.28.orig/include/linux/kprobes.h
>> +++ 2.6.28/include/linux/kprobes.h
>> @@ -37,9 +37,9 @@
>> #include <linux/spinlock.h>
>> #include <linux/rcupdate.h>
>> #include <linux/mutex.h>
>> +#include <asm/kprobes.h>
>>
>> #ifdef CONFIG_KPROBES
>> -#include <asm/kprobes.h>
>>
>
> The above change breaks alpha, and any other architecture which has no
> asm/kprobes.h.
Oops, indeed. Thank you for finding it!
> I undid that change, but maybe that rebroke things?
Yes, some structures should be defined in asm/kprobes.h, so
here is an additional fix patch.
------------------------------------------------------
From: Masami Hiramatsu <mhiramat@redhat.com>
Add dummy definitions of kprobe_opcode_t and arch_specific_insn
when CONFIG_KPROBES=n.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
---
include/linux/kprobes.h | 4 ++++
1 file changed, 4 insertions(+)
Index: 2.6-mm/include/linux/kprobes.h
===================================================================
--- 2.6-mm.orig/include/linux/kprobes.h
+++ 2.6-mm/include/linux/kprobes.h
@@ -50,6 +50,10 @@
/* Attach to insert probes on any functions which should be ignored*/
#define __kprobes __attribute__((__section__(".kprobes.text"))) notrace
#else /* CONFIG_KPROBES */
+typedef int kprobe_opcode_t;
+struct arch_specific_insn {
+ int dummy;
+};
#define __kprobes notrace
#endif /* CONFIG_KPROBES */
--
Masami Hiramatsu
Software Engineer
Hitachi Computer Products (America) Inc.
Software Solutions Division
e-mail: mhiramat@redhat.com
^ permalink raw reply [flat|nested] 6+ messages in thread
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2009-01-05 22:23 [PATCH][bugfix] kprobes: fix module compilation error with CONFIG_KPROBES=n Masami Hiramatsu
2009-01-06 16:39 ` Masami Hiramatsu
2009-01-12 22:51 ` Andrew Morton
2009-01-13 1:34 ` Masami Hiramatsu
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