a8d154b009
This patch lowers the number of places a developer must modify to add new tracepoints. The current method to add a new tracepoint into an existing system is to write the trace point macro in the trace header with one of the macros TRACE_EVENT, TRACE_FORMAT or DECLARE_TRACE, then they must add the same named item into the C file with the macro DEFINE_TRACE(name) and then add the trace point. This change cuts out the needing to add the DEFINE_TRACE(name). Every file that uses the tracepoint must still include the trace/<type>.h file, but the one C file must also add a define before the including of that file. #define CREATE_TRACE_POINTS #include <trace/mytrace.h> This will cause the trace/mytrace.h file to also produce the C code necessary to implement the trace point. Note, if more than one trace/<type>.h is used to create the C code it is best to list them all together. #define CREATE_TRACE_POINTS #include <trace/foo.h> #include <trace/bar.h> #include <trace/fido.h> Thanks to Mathieu Desnoyers and Christoph Hellwig for coming up with the cleaner solution of the define above the includes over my first design to have the C code include a "special" header. This patch converts sched, irq and lockdep and skb to use this new method. Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Neil Horman <nhorman@tuxdriver.com> Cc: Zhao Lei <zhaolei@cn.fujitsu.com> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
195 lines
4.2 KiB
C
195 lines
4.2 KiB
C
#if !defined(_TRACE_KMEM_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_KMEM_H
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#include <linux/types.h>
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#include <linux/tracepoint.h>
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM kmem
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TRACE_EVENT(kmalloc,
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TP_PROTO(unsigned long call_site,
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const void *ptr,
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size_t bytes_req,
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size_t bytes_alloc,
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gfp_t gfp_flags),
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TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags),
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TP_STRUCT__entry(
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__field( unsigned long, call_site )
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__field( const void *, ptr )
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__field( size_t, bytes_req )
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__field( size_t, bytes_alloc )
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__field( gfp_t, gfp_flags )
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),
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TP_fast_assign(
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__entry->call_site = call_site;
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__entry->ptr = ptr;
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__entry->bytes_req = bytes_req;
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__entry->bytes_alloc = bytes_alloc;
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__entry->gfp_flags = gfp_flags;
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),
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TP_printk("call_site=%lx ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%08x",
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__entry->call_site,
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__entry->ptr,
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__entry->bytes_req,
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__entry->bytes_alloc,
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__entry->gfp_flags)
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);
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TRACE_EVENT(kmem_cache_alloc,
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TP_PROTO(unsigned long call_site,
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const void *ptr,
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size_t bytes_req,
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size_t bytes_alloc,
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gfp_t gfp_flags),
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TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags),
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TP_STRUCT__entry(
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__field( unsigned long, call_site )
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__field( const void *, ptr )
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__field( size_t, bytes_req )
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__field( size_t, bytes_alloc )
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__field( gfp_t, gfp_flags )
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),
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TP_fast_assign(
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__entry->call_site = call_site;
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__entry->ptr = ptr;
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__entry->bytes_req = bytes_req;
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__entry->bytes_alloc = bytes_alloc;
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__entry->gfp_flags = gfp_flags;
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),
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TP_printk("call_site=%lx ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%08x",
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__entry->call_site,
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__entry->ptr,
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__entry->bytes_req,
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__entry->bytes_alloc,
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__entry->gfp_flags)
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);
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TRACE_EVENT(kmalloc_node,
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TP_PROTO(unsigned long call_site,
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const void *ptr,
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size_t bytes_req,
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size_t bytes_alloc,
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gfp_t gfp_flags,
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int node),
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TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags, node),
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TP_STRUCT__entry(
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__field( unsigned long, call_site )
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__field( const void *, ptr )
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__field( size_t, bytes_req )
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__field( size_t, bytes_alloc )
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__field( gfp_t, gfp_flags )
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__field( int, node )
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),
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TP_fast_assign(
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__entry->call_site = call_site;
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__entry->ptr = ptr;
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__entry->bytes_req = bytes_req;
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__entry->bytes_alloc = bytes_alloc;
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__entry->gfp_flags = gfp_flags;
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__entry->node = node;
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),
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TP_printk("call_site=%lx ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%08x node=%d",
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__entry->call_site,
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__entry->ptr,
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__entry->bytes_req,
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__entry->bytes_alloc,
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__entry->gfp_flags,
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__entry->node)
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);
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TRACE_EVENT(kmem_cache_alloc_node,
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TP_PROTO(unsigned long call_site,
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const void *ptr,
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size_t bytes_req,
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size_t bytes_alloc,
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gfp_t gfp_flags,
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int node),
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TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags, node),
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TP_STRUCT__entry(
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__field( unsigned long, call_site )
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__field( const void *, ptr )
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__field( size_t, bytes_req )
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__field( size_t, bytes_alloc )
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__field( gfp_t, gfp_flags )
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__field( int, node )
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),
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TP_fast_assign(
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__entry->call_site = call_site;
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__entry->ptr = ptr;
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__entry->bytes_req = bytes_req;
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__entry->bytes_alloc = bytes_alloc;
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__entry->gfp_flags = gfp_flags;
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__entry->node = node;
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),
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TP_printk("call_site=%lx ptr=%p bytes_req=%zu bytes_alloc=%zu gfp_flags=%08x node=%d",
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__entry->call_site,
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__entry->ptr,
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__entry->bytes_req,
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__entry->bytes_alloc,
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__entry->gfp_flags,
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__entry->node)
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);
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TRACE_EVENT(kfree,
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TP_PROTO(unsigned long call_site, const void *ptr),
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TP_ARGS(call_site, ptr),
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TP_STRUCT__entry(
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__field( unsigned long, call_site )
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__field( const void *, ptr )
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),
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TP_fast_assign(
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__entry->call_site = call_site;
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__entry->ptr = ptr;
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),
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TP_printk("call_site=%lx ptr=%p", __entry->call_site, __entry->ptr)
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);
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TRACE_EVENT(kmem_cache_free,
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TP_PROTO(unsigned long call_site, const void *ptr),
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TP_ARGS(call_site, ptr),
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TP_STRUCT__entry(
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__field( unsigned long, call_site )
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__field( const void *, ptr )
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),
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TP_fast_assign(
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__entry->call_site = call_site;
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__entry->ptr = ptr;
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),
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TP_printk("call_site=%lx ptr=%p", __entry->call_site, __entry->ptr)
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);
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#endif /* _TRACE_KMEM_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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