forked from luck/tmp_suning_uos_patched
bdfebd848f
This patch adds a new option to enable taken branch stack sampling, i.e., leverage the PERF_SAMPLE_BRANCH_STACK feature of perf_events. There is a new option to active this mode: -b. It is possible to pass a set of filters to select the type of branches to sample. The following filters are available: - any : any type of branches - any_call : any function call or system call - any_ret : any function return or system call return - any_ind : any indirect branch - u: only when the branch target is at the user level - k: only when the branch target is in the kernel - hv: only when the branch target is in the hypervisor Filters can be combined by passing a comma separated list to the option: $ perf record -b any_call,u -e cycles:u branchy Signed-off-by: Roberto Agostino Vitillo <ravitillo@lbl.gov> Signed-off-by: Stephane Eranian <eranian@google.com> Cc: peterz@infradead.org Cc: acme@redhat.com Cc: robert.richter@amd.com Cc: ming.m.lin@intel.com Cc: andi@firstfloor.org Cc: asharma@fb.com Cc: vweaver1@eecs.utk.edu Cc: khandual@linux.vnet.ibm.com Cc: dsahern@gmail.com Link: http://lkml.kernel.org/r/1328826068-11713-13-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
232 lines
5.3 KiB
C
232 lines
5.3 KiB
C
#ifndef _PERF_PERF_H
|
|
#define _PERF_PERF_H
|
|
|
|
struct winsize;
|
|
|
|
void get_term_dimensions(struct winsize *ws);
|
|
|
|
#if defined(__i386__)
|
|
#include "../../arch/x86/include/asm/unistd.h"
|
|
#define rmb() asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
|
|
#define cpu_relax() asm volatile("rep; nop" ::: "memory");
|
|
#define CPUINFO_PROC "model name"
|
|
#endif
|
|
|
|
#if defined(__x86_64__)
|
|
#include "../../arch/x86/include/asm/unistd.h"
|
|
#define rmb() asm volatile("lfence" ::: "memory")
|
|
#define cpu_relax() asm volatile("rep; nop" ::: "memory");
|
|
#define CPUINFO_PROC "model name"
|
|
#endif
|
|
|
|
#ifdef __powerpc__
|
|
#include "../../arch/powerpc/include/asm/unistd.h"
|
|
#define rmb() asm volatile ("sync" ::: "memory")
|
|
#define cpu_relax() asm volatile ("" ::: "memory");
|
|
#define CPUINFO_PROC "cpu"
|
|
#endif
|
|
|
|
#ifdef __s390__
|
|
#include "../../arch/s390/include/asm/unistd.h"
|
|
#define rmb() asm volatile("bcr 15,0" ::: "memory")
|
|
#define cpu_relax() asm volatile("" ::: "memory");
|
|
#endif
|
|
|
|
#ifdef __sh__
|
|
#include "../../arch/sh/include/asm/unistd.h"
|
|
#if defined(__SH4A__) || defined(__SH5__)
|
|
# define rmb() asm volatile("synco" ::: "memory")
|
|
#else
|
|
# define rmb() asm volatile("" ::: "memory")
|
|
#endif
|
|
#define cpu_relax() asm volatile("" ::: "memory")
|
|
#define CPUINFO_PROC "cpu type"
|
|
#endif
|
|
|
|
#ifdef __hppa__
|
|
#include "../../arch/parisc/include/asm/unistd.h"
|
|
#define rmb() asm volatile("" ::: "memory")
|
|
#define cpu_relax() asm volatile("" ::: "memory");
|
|
#define CPUINFO_PROC "cpu"
|
|
#endif
|
|
|
|
#ifdef __sparc__
|
|
#include "../../arch/sparc/include/asm/unistd.h"
|
|
#define rmb() asm volatile("":::"memory")
|
|
#define cpu_relax() asm volatile("":::"memory")
|
|
#define CPUINFO_PROC "cpu"
|
|
#endif
|
|
|
|
#ifdef __alpha__
|
|
#include "../../arch/alpha/include/asm/unistd.h"
|
|
#define rmb() asm volatile("mb" ::: "memory")
|
|
#define cpu_relax() asm volatile("" ::: "memory")
|
|
#define CPUINFO_PROC "cpu model"
|
|
#endif
|
|
|
|
#ifdef __ia64__
|
|
#include "../../arch/ia64/include/asm/unistd.h"
|
|
#define rmb() asm volatile ("mf" ::: "memory")
|
|
#define cpu_relax() asm volatile ("hint @pause" ::: "memory")
|
|
#define CPUINFO_PROC "model name"
|
|
#endif
|
|
|
|
#ifdef __arm__
|
|
#include "../../arch/arm/include/asm/unistd.h"
|
|
/*
|
|
* Use the __kuser_memory_barrier helper in the CPU helper page. See
|
|
* arch/arm/kernel/entry-armv.S in the kernel source for details.
|
|
*/
|
|
#define rmb() ((void(*)(void))0xffff0fa0)()
|
|
#define cpu_relax() asm volatile("":::"memory")
|
|
#define CPUINFO_PROC "Processor"
|
|
#endif
|
|
|
|
#ifdef __mips__
|
|
#include "../../arch/mips/include/asm/unistd.h"
|
|
#define rmb() asm volatile( \
|
|
".set mips2\n\t" \
|
|
"sync\n\t" \
|
|
".set mips0" \
|
|
: /* no output */ \
|
|
: /* no input */ \
|
|
: "memory")
|
|
#define cpu_relax() asm volatile("" ::: "memory")
|
|
#define CPUINFO_PROC "cpu model"
|
|
#endif
|
|
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/syscall.h>
|
|
|
|
#include "../../include/linux/perf_event.h"
|
|
#include "util/types.h"
|
|
#include <stdbool.h>
|
|
|
|
struct perf_mmap {
|
|
void *base;
|
|
int mask;
|
|
unsigned int prev;
|
|
};
|
|
|
|
static inline unsigned int perf_mmap__read_head(struct perf_mmap *mm)
|
|
{
|
|
struct perf_event_mmap_page *pc = mm->base;
|
|
int head = pc->data_head;
|
|
rmb();
|
|
return head;
|
|
}
|
|
|
|
static inline void perf_mmap__write_tail(struct perf_mmap *md,
|
|
unsigned long tail)
|
|
{
|
|
struct perf_event_mmap_page *pc = md->base;
|
|
|
|
/*
|
|
* ensure all reads are done before we write the tail out.
|
|
*/
|
|
/* mb(); */
|
|
pc->data_tail = tail;
|
|
}
|
|
|
|
/*
|
|
* prctl(PR_TASK_PERF_EVENTS_DISABLE) will (cheaply) disable all
|
|
* counters in the current task.
|
|
*/
|
|
#define PR_TASK_PERF_EVENTS_DISABLE 31
|
|
#define PR_TASK_PERF_EVENTS_ENABLE 32
|
|
|
|
#ifndef NSEC_PER_SEC
|
|
# define NSEC_PER_SEC 1000000000ULL
|
|
#endif
|
|
|
|
static inline unsigned long long rdclock(void)
|
|
{
|
|
struct timespec ts;
|
|
|
|
clock_gettime(CLOCK_MONOTONIC, &ts);
|
|
return ts.tv_sec * 1000000000ULL + ts.tv_nsec;
|
|
}
|
|
|
|
/*
|
|
* Pick up some kernel type conventions:
|
|
*/
|
|
#define __user
|
|
#define asmlinkage
|
|
|
|
#define unlikely(x) __builtin_expect(!!(x), 0)
|
|
#define min(x, y) ({ \
|
|
typeof(x) _min1 = (x); \
|
|
typeof(y) _min2 = (y); \
|
|
(void) (&_min1 == &_min2); \
|
|
_min1 < _min2 ? _min1 : _min2; })
|
|
|
|
static inline int
|
|
sys_perf_event_open(struct perf_event_attr *attr,
|
|
pid_t pid, int cpu, int group_fd,
|
|
unsigned long flags)
|
|
{
|
|
return syscall(__NR_perf_event_open, attr, pid, cpu,
|
|
group_fd, flags);
|
|
}
|
|
|
|
#define MAX_COUNTERS 256
|
|
#define MAX_NR_CPUS 256
|
|
|
|
struct ip_callchain {
|
|
u64 nr;
|
|
u64 ips[0];
|
|
};
|
|
|
|
struct branch_flags {
|
|
u64 mispred:1;
|
|
u64 predicted:1;
|
|
u64 reserved:62;
|
|
};
|
|
|
|
struct branch_entry {
|
|
u64 from;
|
|
u64 to;
|
|
struct branch_flags flags;
|
|
};
|
|
|
|
struct branch_stack {
|
|
u64 nr;
|
|
struct branch_entry entries[0];
|
|
};
|
|
|
|
extern bool perf_host, perf_guest;
|
|
extern const char perf_version_string[];
|
|
|
|
void pthread__unblock_sigwinch(void);
|
|
|
|
struct perf_record_opts {
|
|
const char *target_pid;
|
|
const char *target_tid;
|
|
uid_t uid;
|
|
bool call_graph;
|
|
bool group;
|
|
bool inherit_stat;
|
|
bool no_delay;
|
|
bool no_inherit;
|
|
bool no_samples;
|
|
bool pipe_output;
|
|
bool raw_samples;
|
|
bool sample_address;
|
|
bool sample_time;
|
|
bool sample_id_all_missing;
|
|
bool exclude_guest_missing;
|
|
bool system_wide;
|
|
bool period;
|
|
unsigned int freq;
|
|
unsigned int mmap_pages;
|
|
unsigned int user_freq;
|
|
int branch_stack;
|
|
u64 default_interval;
|
|
u64 user_interval;
|
|
const char *cpu_list;
|
|
};
|
|
|
|
#endif
|