Re: linux-next: build failure after merge of the final tree (linus' tree related)

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On Fri, 2010-05-28 at 15:08 +1000, Stephen Rothwell wrote:
> Hi Steven,
> 
> After merging the final tree, today's linux-next build (powerpc allyesconfig) failed like this:
> 
> arch/powerpc/platforms/pseries/hvCall_inst.c: In function 'hcall_inst_init':
> arch/powerpc/platforms/pseries/hvCall_inst.c:143: warning: passing argument 1 of 'register_trace_hcall_entry' from incompatible pointer type
> arch/powerpc/include/asm/trace.h:100: note: expected 'void (*)(void *, long unsigned int,  long unsigned int *)' but argument is of type 'void (*)(long unsigned int,  long unsigned int *)'
> arch/powerpc/platforms/pseries/hvCall_inst.c:143: error: too few arguments to function 'register_trace_hcall_entry'
> arch/powerpc/platforms/pseries/hvCall_inst.c:146: warning: passing argument 1 of 'register_trace_hcall_exit' from incompatible pointer type
> arch/powerpc/include/asm/trace.h:122: note: expected 'void (*)(void *, long unsigned int,  long unsigned int,  long unsigned int *)' but argument is of type 'void (*)(long unsigned int,  long unsigned int,  long unsigned int *)'
> arch/powerpc/platforms/pseries/hvCall_inst.c:146: error: too few arguments to function 'register_trace_hcall_exit'
> arch/powerpc/platforms/pseries/hvCall_inst.c:147: warning: passing argument 1 of 'unregister_trace_hcall_entry' from incompatible pointer type
> arch/powerpc/include/asm/trace.h:100: note: expected 'void (*)(void *, long unsigned int,  long unsigned int *)' but argument is of type 'void (*)(long unsigned int,  long unsigned int *)'
> arch/powerpc/platforms/pseries/hvCall_inst.c:147: error: too few arguments to function 'unregister_trace_hcall_entry'
> 
> Probably caused by commit 38516ab59fbc5b3bb278cf5e1fe2867c70cff32e
> ("tracing: Let tracepoints have data passed to tracepoint callbacks").
> 
> I applied this patch which builds (but may be incorrect).
> 

Looks good to me.

Acked-by: Steven Rostedt <rostedt@xxxxxxxxxxx>

-- Steve

> From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> Date: Fri, 28 May 2010 15:05:00 +1000
> Subject: [PATCH] tracing: fix for tracepoint API change
> 
> Commit 38516ab59fbc5b3bb278cf5e1fe2867c70cff32e "tracing: Let tracepoints
> have data passed to tracepoint callbacks" requires this fixup to the
> powerpc code.
> 
> Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> ---
>  arch/powerpc/platforms/pseries/hvCall_inst.c |   10 +++++-----
>  1 files changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/powerpc/platforms/pseries/hvCall_inst.c b/arch/powerpc/platforms/pseries/hvCall_inst.c
> index 1fefae7..e19ff02 100644
> --- a/arch/powerpc/platforms/pseries/hvCall_inst.c
> +++ b/arch/powerpc/platforms/pseries/hvCall_inst.c
> @@ -102,7 +102,7 @@ static const struct file_operations hcall_inst_seq_fops = {
>  #define CPU_NAME_BUF_SIZE	32
>  
> 
> -static void probe_hcall_entry(unsigned long opcode, unsigned long *args)
> +static void probe_hcall_entry(void *ignored, unsigned long opcode, unsigned long *args)
>  {
>  	struct hcall_stats *h;
>  
> @@ -114,7 +114,7 @@ static void probe_hcall_entry(unsigned long opcode, unsigned long *args)
>  	h->purr_start = mfspr(SPRN_PURR);
>  }
>  
> -static void probe_hcall_exit(unsigned long opcode, unsigned long retval,
> +static void probe_hcall_exit(void *ignored, unsigned long opcode, unsigned long retval,
>  			     unsigned long *retbuf)
>  {
>  	struct hcall_stats *h;
> @@ -140,11 +140,11 @@ static int __init hcall_inst_init(void)
>  	if (!firmware_has_feature(FW_FEATURE_LPAR))
>  		return 0;
>  
> -	if (register_trace_hcall_entry(probe_hcall_entry))
> +	if (register_trace_hcall_entry(probe_hcall_entry, NULL))
>  		return -EINVAL;
>  
> -	if (register_trace_hcall_exit(probe_hcall_exit)) {
> -		unregister_trace_hcall_entry(probe_hcall_entry);
> +	if (register_trace_hcall_exit(probe_hcall_exit, NULL)) {
> +		unregister_trace_hcall_entry(probe_hcall_entry, NULL);
>  		return -EINVAL;
>  	}
>  
> -- 
> 1.7.1
> 
> 

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