Merge commit 'perf/core' into perf/hw-breakpoint
Conflicts: kernel/Makefile kernel/trace/Makefile kernel/trace/trace.h samples/Makefile Merge reason: We need to be uptodate with the perf events development branch because we plan to rewrite the breakpoints API on top of perf events.
This commit is contained in:
Frederic Weisbecker
@@ -7,10 +7,10 @@
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#include <linux/clocksource.h>
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#include <linux/ring_buffer.h>
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#include <linux/mmiotrace.h>
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#include <linux/tracepoint.h>
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#include <linux/ftrace.h>
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#include <trace/boot.h>
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#include <linux/kmemtrace.h>
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#include <trace/power.h>
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#include <linux/trace_seq.h>
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#include <linux/ftrace_event.h>
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@@ -40,164 +40,60 @@ enum trace_type {
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TRACE_HW_BRANCHES,
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TRACE_KMEM_ALLOC,
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TRACE_KMEM_FREE,
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TRACE_POWER,
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TRACE_BLK,
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TRACE_KSYM,
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__TRACE_LAST_TYPE,
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};
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/*
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* Function trace entry - function address and parent function addres:
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*/
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struct ftrace_entry {
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struct trace_entry ent;
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unsigned long ip;
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unsigned long parent_ip;
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};
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/* Function call entry */
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struct ftrace_graph_ent_entry {
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struct trace_entry ent;
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struct ftrace_graph_ent graph_ent;
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};
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/* Function return entry */
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struct ftrace_graph_ret_entry {
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struct trace_entry ent;
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struct ftrace_graph_ret ret;
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};
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extern struct tracer boot_tracer;
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/*
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* Context switch trace entry - which task (and prio) we switched from/to:
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*/
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struct ctx_switch_entry {
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struct trace_entry ent;
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unsigned int prev_pid;
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unsigned char prev_prio;
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unsigned char prev_state;
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unsigned int next_pid;
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unsigned char next_prio;
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unsigned char next_state;
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unsigned int next_cpu;
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};
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/*
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* Special (free-form) trace entry:
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*/
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struct special_entry {
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struct trace_entry ent;
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unsigned long arg1;
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unsigned long arg2;
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unsigned long arg3;
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};
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/*
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* Stack-trace entry:
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*/
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#define FTRACE_STACK_ENTRIES 8
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struct stack_entry {
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struct trace_entry ent;
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unsigned long caller[FTRACE_STACK_ENTRIES];
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};
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struct userstack_entry {
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struct trace_entry ent;
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unsigned long caller[FTRACE_STACK_ENTRIES];
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};
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/*
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* trace_printk entry:
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*/
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struct bprint_entry {
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struct trace_entry ent;
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unsigned long ip;
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const char *fmt;
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u32 buf[];
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};
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struct print_entry {
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struct trace_entry ent;
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unsigned long ip;
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char buf[];
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};
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#define TRACE_OLD_SIZE 88
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struct trace_field_cont {
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unsigned char type;
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/* Temporary till we get rid of this completely */
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char buf[TRACE_OLD_SIZE - 1];
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};
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struct trace_mmiotrace_rw {
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struct trace_entry ent;
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struct mmiotrace_rw rw;
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};
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struct trace_mmiotrace_map {
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struct trace_entry ent;
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struct mmiotrace_map map;
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};
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struct trace_boot_call {
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struct trace_entry ent;
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struct boot_trace_call boot_call;
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};
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struct trace_boot_ret {
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struct trace_entry ent;
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struct boot_trace_ret boot_ret;
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};
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#define TRACE_FUNC_SIZE 30
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#define TRACE_FILE_SIZE 20
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struct trace_branch {
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struct trace_entry ent;
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unsigned line;
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char func[TRACE_FUNC_SIZE+1];
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char file[TRACE_FILE_SIZE+1];
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char correct;
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};
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struct hw_branch_entry {
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struct trace_entry ent;
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u64 from;
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u64 to;
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};
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struct trace_power {
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struct trace_entry ent;
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struct power_trace state_data;
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};
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enum kmemtrace_type_id {
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KMEMTRACE_TYPE_KMALLOC = 0, /* kmalloc() or kfree(). */
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KMEMTRACE_TYPE_CACHE, /* kmem_cache_*(). */
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KMEMTRACE_TYPE_PAGES, /* __get_free_pages() and friends. */
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};
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struct kmemtrace_alloc_entry {
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struct trace_entry ent;
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enum kmemtrace_type_id type_id;
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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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};
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extern struct tracer boot_tracer;
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struct kmemtrace_free_entry {
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struct trace_entry ent;
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enum kmemtrace_type_id type_id;
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unsigned long call_site;
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const void *ptr;
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};
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#undef __field
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#define __field(type, item) type item;
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#undef __field_struct
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#define __field_struct(type, item) __field(type, item)
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#undef __field_desc
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#define __field_desc(type, container, item)
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#undef __array
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#define __array(type, item, size) type item[size];
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#undef __array_desc
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#define __array_desc(type, container, item, size)
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#undef __dynamic_array
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#define __dynamic_array(type, item) type item[];
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#undef F_STRUCT
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#define F_STRUCT(args...) args
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#undef FTRACE_ENTRY
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#define FTRACE_ENTRY(name, struct_name, id, tstruct, print) \
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struct struct_name { \
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struct trace_entry ent; \
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tstruct \
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}
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#undef TP_ARGS
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#define TP_ARGS(args...) args
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#undef FTRACE_ENTRY_DUP
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#define FTRACE_ENTRY_DUP(name, name_struct, id, tstruct, printk)
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#include "trace_entries.h"
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/*
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* syscalls are special, and need special handling, this is why
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* they are not included in trace_entries.h
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*/
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struct syscall_trace_enter {
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struct trace_entry ent;
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int nr;
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@@ -210,23 +106,12 @@ struct syscall_trace_exit {
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unsigned long ret;
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};
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#define KSYM_SELFTEST_ENTRY "ksym_selftest_dummy"
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extern int process_new_ksym_entry(char *ksymname, int op, unsigned long addr);
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struct ksym_trace_entry {
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struct trace_entry ent;
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unsigned long ip;
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unsigned char type;
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char ksym_name[KSYM_NAME_LEN];
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char cmd[TASK_COMM_LEN];
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};
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/*
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* trace_flag_type is an enumeration that holds different
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* states when a trace occurs. These are:
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* IRQS_OFF - interrupts were disabled
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* IRQS_NOSUPPORT - arch does not support irqs_disabled_flags
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* NEED_RESCED - reschedule is requested
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* NEED_RESCHED - reschedule is requested
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* HARDIRQ - inside an interrupt handler
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* SOFTIRQ - inside a softirq handler
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*/
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@@ -325,7 +210,6 @@ extern void __ftrace_bad_type(void);
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IF_ASSIGN(var, ent, struct ftrace_graph_ret_entry, \
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TRACE_GRAPH_RET); \
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IF_ASSIGN(var, ent, struct hw_branch_entry, TRACE_HW_BRANCHES);\
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IF_ASSIGN(var, ent, struct trace_power, TRACE_POWER); \
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IF_ASSIGN(var, ent, struct kmemtrace_alloc_entry, \
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TRACE_KMEM_ALLOC); \
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IF_ASSIGN(var, ent, struct kmemtrace_free_entry, \
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@@ -406,7 +290,6 @@ struct tracer {
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struct tracer *next;
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int print_max;
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struct tracer_flags *flags;
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struct tracer_stat *stats;
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};
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@@ -485,6 +368,10 @@ void tracing_stop_sched_switch_record(void);
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void tracing_start_sched_switch_record(void);
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int register_tracer(struct tracer *type);
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void unregister_tracer(struct tracer *type);
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int is_tracing_stopped(void);
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#define KSYM_SELFTEST_ENTRY "ksym_selftest_dummy"
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extern int process_new_ksym_entry(char *ksymname, int op, unsigned long addr);
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extern unsigned long nsecs_to_usecs(unsigned long nsecs);
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@@ -525,20 +412,6 @@ static inline void __trace_stack(struct trace_array *tr, unsigned long flags,
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extern cycle_t ftrace_now(int cpu);
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#ifdef CONFIG_CONTEXT_SWITCH_TRACER
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typedef void
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(*tracer_switch_func_t)(void *private,
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void *__rq,
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struct task_struct *prev,
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struct task_struct *next);
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struct tracer_switch_ops {
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tracer_switch_func_t func;
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void *private;
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struct tracer_switch_ops *next;
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};
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#endif /* CONFIG_CONTEXT_SWITCH_TRACER */
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extern void trace_find_cmdline(int pid, char comm[]);
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#ifdef CONFIG_DYNAMIC_FTRACE
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@@ -621,10 +494,6 @@ static inline int ftrace_graph_addr(unsigned long addr)
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return 0;
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}
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#else
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static inline int ftrace_trace_addr(unsigned long addr)
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{
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return 1;
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}
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static inline int ftrace_graph_addr(unsigned long addr)
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{
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return 1;
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@@ -638,12 +507,12 @@ print_graph_function(struct trace_iterator *iter)
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}
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#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
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extern struct pid *ftrace_pid_trace;
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extern struct list_head ftrace_pids;
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#ifdef CONFIG_FUNCTION_TRACER
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static inline int ftrace_trace_task(struct task_struct *task)
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{
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if (!ftrace_pid_trace)
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if (list_empty(&ftrace_pids))
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return 1;
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return test_tsk_trace_trace(task);
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@@ -655,6 +524,41 @@ static inline int ftrace_trace_task(struct task_struct *task)
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}
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#endif
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/*
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* struct trace_parser - servers for reading the user input separated by spaces
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* @cont: set if the input is not complete - no final space char was found
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* @buffer: holds the parsed user input
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* @idx: user input lenght
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* @size: buffer size
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*/
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struct trace_parser {
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bool cont;
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char *buffer;
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unsigned idx;
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unsigned size;
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};
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static inline bool trace_parser_loaded(struct trace_parser *parser)
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{
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return (parser->idx != 0);
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}
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static inline bool trace_parser_cont(struct trace_parser *parser)
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{
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return parser->cont;
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}
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static inline void trace_parser_clear(struct trace_parser *parser)
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{
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parser->cont = false;
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parser->idx = 0;
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}
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extern int trace_parser_get_init(struct trace_parser *parser, int size);
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extern void trace_parser_put(struct trace_parser *parser);
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extern int trace_get_user(struct trace_parser *parser, const char __user *ubuf,
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size_t cnt, loff_t *ppos);
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/*
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* trace_iterator_flags is an enumeration that defines bit
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* positions into trace_flags that controls the output.
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@@ -790,7 +694,6 @@ struct event_filter {
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int n_preds;
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struct filter_pred **preds;
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char *filter_string;
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bool no_reset;
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};
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struct event_subsystem {
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@@ -802,22 +705,40 @@ struct event_subsystem {
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};
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struct filter_pred;
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struct regex;
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typedef int (*filter_pred_fn_t) (struct filter_pred *pred, void *event,
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int val1, int val2);
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struct filter_pred {
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filter_pred_fn_t fn;
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u64 val;
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char str_val[MAX_FILTER_STR_VAL];
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int str_len;
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char *field_name;
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int offset;
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int not;
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int op;
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int pop_n;
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typedef int (*regex_match_func)(char *str, struct regex *r, int len);
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enum regex_type {
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MATCH_FULL = 0,
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MATCH_FRONT_ONLY,
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MATCH_MIDDLE_ONLY,
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MATCH_END_ONLY,
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};
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struct regex {
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char pattern[MAX_FILTER_STR_VAL];
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int len;
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int field_len;
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regex_match_func match;
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};
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struct filter_pred {
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filter_pred_fn_t fn;
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u64 val;
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struct regex regex;
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char *field_name;
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int offset;
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int not;
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int op;
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int pop_n;
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};
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extern enum regex_type
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filter_parse_regex(char *buff, int len, char **search, int *not);
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extern void print_event_filter(struct ftrace_event_call *call,
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struct trace_seq *s);
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extern int apply_event_filter(struct ftrace_event_call *call,
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@@ -833,7 +754,8 @@ filter_check_discard(struct ftrace_event_call *call, void *rec,
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struct ring_buffer *buffer,
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struct ring_buffer_event *event)
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{
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if (unlikely(call->filter_active) && !filter_match_preds(call, rec)) {
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if (unlikely(call->filter_active) &&
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!filter_match_preds(call->filter, rec)) {
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ring_buffer_discard_commit(buffer, event);
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return 1;
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}
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@@ -841,58 +763,18 @@ filter_check_discard(struct ftrace_event_call *call, void *rec,
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return 0;
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}
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#define DEFINE_COMPARISON_PRED(type) \
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static int filter_pred_##type(struct filter_pred *pred, void *event, \
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int val1, int val2) \
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{ \
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type *addr = (type *)(event + pred->offset); \
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type val = (type)pred->val; \
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int match = 0; \
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\
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switch (pred->op) { \
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case OP_LT: \
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match = (*addr < val); \
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break; \
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case OP_LE: \
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match = (*addr <= val); \
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break; \
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case OP_GT: \
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match = (*addr > val); \
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break; \
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case OP_GE: \
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match = (*addr >= val); \
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break; \
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default: \
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break; \
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} \
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\
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return match; \
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}
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#define DEFINE_EQUALITY_PRED(size) \
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static int filter_pred_##size(struct filter_pred *pred, void *event, \
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int val1, int val2) \
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{ \
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u##size *addr = (u##size *)(event + pred->offset); \
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u##size val = (u##size)pred->val; \
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int match; \
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\
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match = (val == *addr) ^ pred->not; \
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\
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return match; \
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}
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extern struct mutex event_mutex;
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extern struct list_head ftrace_events;
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extern const char *__start___trace_bprintk_fmt[];
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extern const char *__stop___trace_bprintk_fmt[];
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#undef TRACE_EVENT_FORMAT
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#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \
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#undef FTRACE_ENTRY
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#define FTRACE_ENTRY(call, struct_name, id, tstruct, print) \
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extern struct ftrace_event_call event_##call;
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#undef TRACE_EVENT_FORMAT_NOFILTER
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#define TRACE_EVENT_FORMAT_NOFILTER(call, proto, args, fmt, tstruct, tpfmt)
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#include "trace_event_types.h"
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#undef FTRACE_ENTRY_DUP
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#define FTRACE_ENTRY_DUP(call, struct_name, id, tstruct, print) \
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FTRACE_ENTRY(call, struct_name, id, PARAMS(tstruct), PARAMS(print))
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#include "trace_entries.h"
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#endif /* _LINUX_KERNEL_TRACE_H */
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