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2009-06-15tracing: fix undeclared 'PAGE_SIZE' in include/linux/trace_seq.hWu Zhangjin
when compiling linux-mips with kmemtrace enabled, there will be an error: include/linux/trace_seq.h:12: error: 'PAGE_SIZE' undeclared here (not in a function) I checked the source code and found trace_seq.h used PAGE_SIZE but not included the relative header file, so, fix it via adding the header file <asm/page.h> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Wu Zhangjin <wuzj@lemote.com> LKML-Reference: <1244962350-28702-1-git-send-email-wuzhangjin@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2009-06-09tracing: add trace_seq_vprint interfaceSteven Rostedt
The code to update the print formats for events requires a vprintf format in the trace_seq. This patch adds that interface. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2009-04-20tracing: remove dangling semicolonSteven Rostedt
Due to a cut and paste error, the trace_seq_putc had a semicolon after the prototype but before the stub function when tracing is disabled. [Impact: fix compile error ] Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2009-04-18tracing: remove format attribute of inline functionSteven Rostedt
Due to a cut and paste error, I added the gcc attribute for printf format to the static inline stub of trace_seq_printf. This will cause a compile failure. [ Impact: fix compiler error when CONFIG_TRACING is off ] Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: =?ISO-8859-15?Q?Fr=E9d=E9ric_Weisbecker?= <fweisbec@gmail.com> LKML-Reference: <alpine.DEB.2.00.0904171717080.1016@gandalf.stny.rr.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-04-14tracing/events: add support for modules to TRACE_EVENTSteven Rostedt
Impact: allow modules to add TRACE_EVENTS on load This patch adds the final hooks to allow modules to use the TRACE_EVENT macro. A notifier and a data structure are used to link the TRACE_EVENTs defined in the module to connect them with the ftrace event tracing system. It also adds the necessary automated clean ups to the trace events when a module is removed. Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2009-04-14tracing: make trace_seq operations available for core kernelSteven Rostedt
In the process to make TRACE_EVENT macro work for modules, the trace_seq operations must be available for core kernel code. These operations are quite useful and can be used for other implementations. The main idea is that we create a trace_seq handle that acts very much like the seq_file handle. struct trace_seq *s = kmalloc(sizeof(*s, GFP_KERNEL); trace_seq_init(s); trace_seq_printf(s, "some data %d\n", variable); printk("%s", s->buffer); The main use is to allow a top level function call several other functions that may store printf like data into the buffer. Then at the end, the top level function can process all the data with any method it would like to. It could be passed to userspace, output via printk or even use seq_file: trace_seq_to_user(s, ubuf, cnt); seq_puts(m, s->buffer); Signed-off-by: Steven Rostedt <rostedt@goodmis.org>