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-rw-r--r--kernel/trace/trace_entries.h366
1 files changed, 366 insertions, 0 deletions
diff --git a/kernel/trace/trace_entries.h b/kernel/trace/trace_entries.h
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+++ b/kernel/trace/trace_entries.h
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+/*
+ * This file defines the trace event structures that go into the ring
+ * buffer directly. They are created via macros so that changes for them
+ * appear in the format file. Using macros will automate this process.
+ *
+ * The macro used to create a ftrace data structure is:
+ *
+ * FTRACE_ENTRY( name, struct_name, id, structure, print )
+ *
+ * @name: the name used the event name, as well as the name of
+ * the directory that holds the format file.
+ *
+ * @struct_name: the name of the structure that is created.
+ *
+ * @id: The event identifier that is used to detect what event
+ * this is from the ring buffer.
+ *
+ * @structure: the structure layout
+ *
+ * - __field( type, item )
+ * This is equivalent to declaring
+ * type item;
+ * in the structure.
+ * - __array( type, item, size )
+ * This is equivalent to declaring
+ * type item[size];
+ * in the structure.
+ *
+ * * for structures within structures, the format of the internal
+ * structure is layed out. This allows the internal structure
+ * to be deciphered for the format file. Although these macros
+ * may become out of sync with the internal structure, they
+ * will create a compile error if it happens. Since the
+ * internel structures are just tracing helpers, this is not
+ * an issue.
+ *
+ * When an internal structure is used, it should use:
+ *
+ * __field_struct( type, item )
+ *
+ * instead of __field. This will prevent it from being shown in
+ * the output file. The fields in the structure should use.
+ *
+ * __field_desc( type, container, item )
+ * __array_desc( type, container, item, len )
+ *
+ * type, item and len are the same as __field and __array, but
+ * container is added. This is the name of the item in
+ * __field_struct that this is describing.
+ *
+ *
+ * @print: the print format shown to users in the format file.
+ */
+
+/*
+ * Function trace entry - function address and parent function addres:
+ */
+FTRACE_ENTRY(function, ftrace_entry,
+
+ TRACE_FN,
+
+ F_STRUCT(
+ __field( unsigned long, ip )
+ __field( unsigned long, parent_ip )
+ ),
+
+ F_printk(" %lx <-- %lx", __entry->ip, __entry->parent_ip)
+);
+
+/* Function call entry */
+FTRACE_ENTRY(funcgraph_entry, ftrace_graph_ent_entry,
+
+ TRACE_GRAPH_ENT,
+
+ F_STRUCT(
+ __field_struct( struct ftrace_graph_ent, graph_ent )
+ __field_desc( unsigned long, graph_ent, func )
+ __field_desc( int, graph_ent, depth )
+ ),
+
+ F_printk("--> %lx (%d)", __entry->func, __entry->depth)
+);
+
+/* Function return entry */
+FTRACE_ENTRY(funcgraph_exit, ftrace_graph_ret_entry,
+
+ TRACE_GRAPH_RET,
+
+ F_STRUCT(
+ __field_struct( struct ftrace_graph_ret, ret )
+ __field_desc( unsigned long, ret, func )
+ __field_desc( unsigned long long, ret, calltime)
+ __field_desc( unsigned long long, ret, rettime )
+ __field_desc( unsigned long, ret, overrun )
+ __field_desc( int, ret, depth )
+ ),
+
+ F_printk("<-- %lx (%d) (start: %llx end: %llx) over: %d",
+ __entry->func, __entry->depth,
+ __entry->calltime, __entry->rettime,
+ __entry->depth)
+);
+
+/*
+ * Context switch trace entry - which task (and prio) we switched from/to:
+ *
+ * This is used for both wakeup and context switches. We only want
+ * to create one structure, but we need two outputs for it.
+ */
+#define FTRACE_CTX_FIELDS \
+ __field( unsigned int, prev_pid ) \
+ __field( unsigned char, prev_prio ) \
+ __field( unsigned char, prev_state ) \
+ __field( unsigned int, next_pid ) \
+ __field( unsigned char, next_prio ) \
+ __field( unsigned char, next_state ) \
+ __field( unsigned int, next_cpu )
+
+FTRACE_ENTRY(context_switch, ctx_switch_entry,
+
+ TRACE_CTX,
+
+ F_STRUCT(
+ FTRACE_CTX_FIELDS
+ ),
+
+ F_printk("%u:%u:%u ==> %u:%u:%u [%03u]",
+ __entry->prev_pid, __entry->prev_prio, __entry->prev_state,
+ __entry->next_pid, __entry->next_prio, __entry->next_state,
+ __entry->next_cpu
+ )
+);
+
+/*
+ * FTRACE_ENTRY_DUP only creates the format file, it will not
+ * create another structure.
+ */
+FTRACE_ENTRY_DUP(wakeup, ctx_switch_entry,
+
+ TRACE_WAKE,
+
+ F_STRUCT(
+ FTRACE_CTX_FIELDS
+ ),
+
+ F_printk("%u:%u:%u ==+ %u:%u:%u [%03u]",
+ __entry->prev_pid, __entry->prev_prio, __entry->prev_state,
+ __entry->next_pid, __entry->next_prio, __entry->next_state,
+ __entry->next_cpu
+ )
+);
+
+/*
+ * Special (free-form) trace entry:
+ */
+FTRACE_ENTRY(special, special_entry,
+
+ TRACE_SPECIAL,
+
+ F_STRUCT(
+ __field( unsigned long, arg1 )
+ __field( unsigned long, arg2 )
+ __field( unsigned long, arg3 )
+ ),
+
+ F_printk("(%08lx) (%08lx) (%08lx)",
+ __entry->arg1, __entry->arg2, __entry->arg3)
+);
+
+/*
+ * Stack-trace entry:
+ */
+
+#define FTRACE_STACK_ENTRIES 8
+
+FTRACE_ENTRY(kernel_stack, stack_entry,
+
+ TRACE_STACK,
+
+ F_STRUCT(
+ __array( unsigned long, caller, FTRACE_STACK_ENTRIES )
+ ),
+
+ F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n"
+ "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n",
+ __entry->caller[0], __entry->caller[1], __entry->caller[2],
+ __entry->caller[3], __entry->caller[4], __entry->caller[5],
+ __entry->caller[6], __entry->caller[7])
+);
+
+FTRACE_ENTRY(user_stack, userstack_entry,
+
+ TRACE_USER_STACK,
+
+ F_STRUCT(
+ __field( unsigned int, tgid )
+ __array( unsigned long, caller, FTRACE_STACK_ENTRIES )
+ ),
+
+ F_printk("\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n"
+ "\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n\t=> (%08lx)\n",
+ __entry->caller[0], __entry->caller[1], __entry->caller[2],
+ __entry->caller[3], __entry->caller[4], __entry->caller[5],
+ __entry->caller[6], __entry->caller[7])
+);
+
+/*
+ * trace_printk entry:
+ */
+FTRACE_ENTRY(bprint, bprint_entry,
+
+ TRACE_BPRINT,
+
+ F_STRUCT(
+ __field( unsigned long, ip )
+ __field( const char *, fmt )
+ __dynamic_array( u32, buf )
+ ),
+
+ F_printk("%08lx fmt:%p",
+ __entry->ip, __entry->fmt)
+);
+
+FTRACE_ENTRY(print, print_entry,
+
+ TRACE_PRINT,
+
+ F_STRUCT(
+ __field( unsigned long, ip )
+ __dynamic_array( char, buf )
+ ),
+
+ F_printk("%08lx %s",
+ __entry->ip, __entry->buf)
+);
+
+FTRACE_ENTRY(mmiotrace_rw, trace_mmiotrace_rw,
+
+ TRACE_MMIO_RW,
+
+ F_STRUCT(
+ __field_struct( struct mmiotrace_rw, rw )
+ __field_desc( resource_size_t, rw, phys )
+ __field_desc( unsigned long, rw, value )
+ __field_desc( unsigned long, rw, pc )
+ __field_desc( int, rw, map_id )
+ __field_desc( unsigned char, rw, opcode )
+ __field_desc( unsigned char, rw, width )
+ ),
+
+ F_printk("%lx %lx %lx %d %x %x",
+ (unsigned long)__entry->phys, __entry->value, __entry->pc,
+ __entry->map_id, __entry->opcode, __entry->width)
+);
+
+FTRACE_ENTRY(mmiotrace_map, trace_mmiotrace_map,
+
+ TRACE_MMIO_MAP,
+
+ F_STRUCT(
+ __field_struct( struct mmiotrace_map, map )
+ __field_desc( resource_size_t, map, phys )
+ __field_desc( unsigned long, map, virt )
+ __field_desc( unsigned long, map, len )
+ __field_desc( int, map, map_id )
+ __field_desc( unsigned char, map, opcode )
+ ),
+
+ F_printk("%lx %lx %lx %d %x",
+ (unsigned long)__entry->phys, __entry->virt, __entry->len,
+ __entry->map_id, __entry->opcode)
+);
+
+FTRACE_ENTRY(boot_call, trace_boot_call,
+
+ TRACE_BOOT_CALL,
+
+ F_STRUCT(
+ __field_struct( struct boot_trace_call, boot_call )
+ __field_desc( pid_t, boot_call, caller )
+ __array_desc( char, boot_call, func, KSYM_SYMBOL_LEN)
+ ),
+
+ F_printk("%d %s", __entry->caller, __entry->func)
+);
+
+FTRACE_ENTRY(boot_ret, trace_boot_ret,
+
+ TRACE_BOOT_RET,
+
+ F_STRUCT(
+ __field_struct( struct boot_trace_ret, boot_ret )
+ __array_desc( char, boot_ret, func, KSYM_SYMBOL_LEN)
+ __field_desc( int, boot_ret, result )
+ __field_desc( unsigned long, boot_ret, duration )
+ ),
+
+ F_printk("%s %d %lx",
+ __entry->func, __entry->result, __entry->duration)
+);
+
+#define TRACE_FUNC_SIZE 30
+#define TRACE_FILE_SIZE 20
+
+FTRACE_ENTRY(branch, trace_branch,
+
+ TRACE_BRANCH,
+
+ F_STRUCT(
+ __field( unsigned int, line )
+ __array( char, func, TRACE_FUNC_SIZE+1 )
+ __array( char, file, TRACE_FILE_SIZE+1 )
+ __field( char, correct )
+ ),
+
+ F_printk("%u:%s:%s (%u)",
+ __entry->line,
+ __entry->func, __entry->file, __entry->correct)
+);
+
+FTRACE_ENTRY(hw_branch, hw_branch_entry,
+
+ TRACE_HW_BRANCHES,
+
+ F_STRUCT(
+ __field( u64, from )
+ __field( u64, to )
+ ),
+
+ F_printk("from: %llx to: %llx", __entry->from, __entry->to)
+);
+
+FTRACE_ENTRY(kmem_alloc, kmemtrace_alloc_entry,
+
+ TRACE_KMEM_ALLOC,
+
+ F_STRUCT(
+ __field( enum kmemtrace_type_id, type_id )
+ __field( unsigned long, call_site )
+ __field( const void *, ptr )
+ __field( size_t, bytes_req )
+ __field( size_t, bytes_alloc )
+ __field( gfp_t, gfp_flags )
+ __field( int, node )
+ ),
+
+ F_printk("type:%u call_site:%lx ptr:%p req:%zi alloc:%zi"
+ " flags:%x node:%d",
+ __entry->type_id, __entry->call_site, __entry->ptr,
+ __entry->bytes_req, __entry->bytes_alloc,
+ __entry->gfp_flags, __entry->node)
+);
+
+FTRACE_ENTRY(kmem_free, kmemtrace_free_entry,
+
+ TRACE_KMEM_FREE,
+
+ F_STRUCT(
+ __field( enum kmemtrace_type_id, type_id )
+ __field( unsigned long, call_site )
+ __field( const void *, ptr )
+ ),
+
+ F_printk("type:%u call_site:%lx ptr:%p",
+ __entry->type_id, __entry->call_site, __entry->ptr)
+);