linux-kernel - Re: [PATCH V4] fix warning on kernel/trace/trace_branch.c andtrace_hw

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Date:	Thu, 08 Oct 2009 09:37:42 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	rostedt@...dmis.org
CC:	Zhenwen Xu <helight.xu@...il.com>, linux-kernel@...r.kernel.org,
	Ingo Molnar <mingo@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCH V4] fix warning on kernel/trace/trace_branch.c andtrace_hw_branches.c

>> diff --git a/kernel/trace/trace_hw_branches.c b/kernel/trace/trace_hw_branches.c
>> index 23b6385..52a5903 100644
>> --- a/kernel/trace/trace_hw_branches.c
>> +++ b/kernel/trace/trace_hw_branches.c
>> @@ -165,6 +165,7 @@ void trace_hw_branch(u64 from, u64 to)
>>  	struct ftrace_event_call *call = &event_hw_branch;
>>  	struct trace_array *tr = hw_branch_trace;
>>  	struct ring_buffer_event *event;
>> +	struct ring_buffer *buf;
>>  	struct hw_branch_entry *entry;
>>  	unsigned long irq1;
>>  	int cpu;
>> @@ -180,7 +181,8 @@ void trace_hw_branch(u64 from, u64 to)
>>  	if (atomic_inc_return(&tr->data[cpu]->disabled) != 1)
>>  		goto out;
>>  
>> -	event = trace_buffer_lock_reserve(tr, TRACE_HW_BRANCHES,
>> +	buf = tr->buffer

And here won't compile..

>> +	event = trace_buffer_lock_reserve(buf, TRACE_HW_BRANCHES,
>>  					  sizeof(*entry), 0, 0);
--
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