#undef TRACE_SYSTEM #define TRACE_SYSTEM hda #if !defined(__HDAC_TRACE_H) || defined(TRACE_HEADER_MULTI_READ) #define __HDAC_TRACE_H #include #include #include #ifndef HDAC_MSG_MAX #define HDAC_MSG_MAX 500 #endif struct hdac_bus; struct hdac_codec; TRACE_EVENT(hda_send_cmd, TP_PROTO(struct hdac_bus *bus, unsigned int cmd), TP_ARGS(bus, cmd), TP_STRUCT__entry(__dynamic_array(char, msg, HDAC_MSG_MAX)), TP_fast_assign( snprintf(__get_str(msg), HDAC_MSG_MAX, "[%s:%d] val=0x%08x", dev_name((bus)->dev), (cmd) >> 28, cmd); ), TP_printk("%s", __get_str(msg)) ); TRACE_EVENT(hda_get_response, TP_PROTO(struct hdac_bus *bus, unsigned int addr, unsigned int res), TP_ARGS(bus, addr, res), TP_STRUCT__entry(__dynamic_array(char, msg, HDAC_MSG_MAX)), TP_fast_assign( snprintf(__get_str(msg), HDAC_MSG_MAX, "[%s:%d] val=0x%08x", dev_name((bus)->dev), addr, res); ), TP_printk("%s", __get_str(msg)) ); TRACE_EVENT(hda_unsol_event, TP_PROTO(struct hdac_bus *bus, u32 res, u32 res_ex), TP_ARGS(bus, res, res_ex), TP_STRUCT__entry(__dynamic_array(char, msg, HDAC_MSG_MAX)), TP_fast_assign( snprintf(__get_str(msg), HDAC_MSG_MAX, "[%s:%d] res=0x%08x, res_ex=0x%08x", dev_name((bus)->dev), res_ex & 0x0f, res, res_ex); ), TP_printk("%s", __get_str(msg)) ); DECLARE_EVENT_CLASS(hdac_stream, TP_PROTO(struct hdac_bus *bus, struct hdac_stream *azx_dev), TP_ARGS(bus, azx_dev), TP_STRUCT__entry( __field(unsigned char, stream_tag) ), TP_fast_assign( __entry->stream_tag = (azx_dev)->stream_tag; ), TP_printk("stream_tag: %d", __entry->stream_tag) ); DEFINE_EVENT(hdac_stream, snd_hdac_stream_start, TP_PROTO(struct hdac_bus *bus, struct hdac_stream *azx_dev), TP_ARGS(bus, azx_dev) ); DEFINE_EVENT(hdac_stream, snd_hdac_stream_stop, TP_PROTO(struct hdac_bus *bus, struct hdac_stream *azx_dev), TP_ARGS(bus, azx_dev) ); #endif /* __HDAC_TRACE_H */ /* This part must be outside protection */ #undef TRACE_INCLUDE_PATH #define TRACE_INCLUDE_PATH . #undef TRACE_INCLUDE_FILE #define TRACE_INCLUDE_FILE trace #include .cgi/linux/net-next.git/diff/include/net/bluetooth?h=nds-private-remove&id=79c6f448c8b79c321e4a1f31f98194e4f6b6cae7'>diff
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authorSteven Rostedt (VMware) <rostedt@goodmis.org>2017-01-30 19:27:10 -0500
committerSteven Rostedt (VMware) <rostedt@goodmis.org>2017-01-31 09:13:49 -0500
commit79c6f448c8b79c321e4a1f31f98194e4f6b6cae7 (patch)
tree370efda701f03cccf21e02bb1fdd3b852547d75c /include/net/bluetooth
parent0c744ea4f77d72b3dcebb7a8f2684633ec79be88 (diff)
tracing: Fix hwlat kthread migration
The hwlat tracer creates a kernel thread at start of the tracer. It is pinned to a single CPU and will move to the next CPU after each period of running. If the user modifies the migration thread's affinity, it will not change after that happens. The original code created the thread at the first instance it was called, but later was changed to destroy the thread after the tracer was finished, and would not be created until the next instance of the tracer was established. The code that initialized the affinity was only called on the initial instantiation of the tracer. After that, it was not initialized, and the previous affinity did not match the current newly created one, making it appear that the user modified the thread's affinity when it did not, and the thread failed to migrate again. Cc: stable@vger.kernel.org Fixes: 0330f7aa8ee6 ("tracing: Have hwlat trace migrate across tracing_cpumask CPUs") Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'include/net/bluetooth')