forked from luck/tmp_suning_uos_patched
70cb4e963f
Currently many perf commands annotate/evlist/report/script/lock etc all support "-i" option to chose a specific perf data, and all of them create a local "input_name" to save the file name for that perf data. Since most of these commands need it, we can add a global variable for it, also it can some other benefits: 1. When calling script browser inside hists/annotation browser, it needs to know the perf data file name to run that script. 2. For further feature like runtime switching to another perf data file, this variable can also help. Signed-off-by: Feng Tang <feng.tang@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1351569369-26732-2-git-send-email-feng.tang@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
788 lines
18 KiB
C
788 lines
18 KiB
C
#include "builtin.h"
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#include "perf.h"
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#include "util/evlist.h"
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#include "util/evsel.h"
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#include "util/util.h"
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#include "util/cache.h"
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#include "util/symbol.h"
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#include "util/thread.h"
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#include "util/header.h"
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#include "util/session.h"
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#include "util/tool.h"
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#include "util/parse-options.h"
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#include "util/trace-event.h"
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#include "util/debug.h"
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#include <linux/rbtree.h>
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struct alloc_stat;
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typedef int (*sort_fn_t)(struct alloc_stat *, struct alloc_stat *);
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static int alloc_flag;
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static int caller_flag;
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static int alloc_lines = -1;
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static int caller_lines = -1;
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static bool raw_ip;
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static int *cpunode_map;
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static int max_cpu_num;
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struct alloc_stat {
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u64 call_site;
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u64 ptr;
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u64 bytes_req;
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u64 bytes_alloc;
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u32 hit;
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u32 pingpong;
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short alloc_cpu;
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struct rb_node node;
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};
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static struct rb_root root_alloc_stat;
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static struct rb_root root_alloc_sorted;
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static struct rb_root root_caller_stat;
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static struct rb_root root_caller_sorted;
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static unsigned long total_requested, total_allocated;
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static unsigned long nr_allocs, nr_cross_allocs;
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#define PATH_SYS_NODE "/sys/devices/system/node"
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static int init_cpunode_map(void)
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{
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FILE *fp;
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int i, err = -1;
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fp = fopen("/sys/devices/system/cpu/kernel_max", "r");
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if (!fp) {
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max_cpu_num = 4096;
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return 0;
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}
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if (fscanf(fp, "%d", &max_cpu_num) < 1) {
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pr_err("Failed to read 'kernel_max' from sysfs");
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goto out_close;
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}
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max_cpu_num++;
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cpunode_map = calloc(max_cpu_num, sizeof(int));
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if (!cpunode_map) {
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pr_err("%s: calloc failed\n", __func__);
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goto out_close;
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}
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for (i = 0; i < max_cpu_num; i++)
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cpunode_map[i] = -1;
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err = 0;
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out_close:
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fclose(fp);
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return err;
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}
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static int setup_cpunode_map(void)
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{
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struct dirent *dent1, *dent2;
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DIR *dir1, *dir2;
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unsigned int cpu, mem;
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char buf[PATH_MAX];
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if (init_cpunode_map())
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return -1;
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dir1 = opendir(PATH_SYS_NODE);
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if (!dir1)
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return -1;
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while ((dent1 = readdir(dir1)) != NULL) {
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if (dent1->d_type != DT_DIR ||
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sscanf(dent1->d_name, "node%u", &mem) < 1)
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continue;
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snprintf(buf, PATH_MAX, "%s/%s", PATH_SYS_NODE, dent1->d_name);
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dir2 = opendir(buf);
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if (!dir2)
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continue;
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while ((dent2 = readdir(dir2)) != NULL) {
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if (dent2->d_type != DT_LNK ||
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sscanf(dent2->d_name, "cpu%u", &cpu) < 1)
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continue;
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cpunode_map[cpu] = mem;
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}
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closedir(dir2);
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}
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closedir(dir1);
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return 0;
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}
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static int insert_alloc_stat(unsigned long call_site, unsigned long ptr,
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int bytes_req, int bytes_alloc, int cpu)
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{
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struct rb_node **node = &root_alloc_stat.rb_node;
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struct rb_node *parent = NULL;
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struct alloc_stat *data = NULL;
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while (*node) {
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parent = *node;
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data = rb_entry(*node, struct alloc_stat, node);
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if (ptr > data->ptr)
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node = &(*node)->rb_right;
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else if (ptr < data->ptr)
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node = &(*node)->rb_left;
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else
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break;
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}
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if (data && data->ptr == ptr) {
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data->hit++;
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data->bytes_req += bytes_req;
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data->bytes_alloc += bytes_alloc;
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} else {
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data = malloc(sizeof(*data));
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if (!data) {
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pr_err("%s: malloc failed\n", __func__);
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return -1;
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}
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data->ptr = ptr;
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data->pingpong = 0;
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data->hit = 1;
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data->bytes_req = bytes_req;
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data->bytes_alloc = bytes_alloc;
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rb_link_node(&data->node, parent, node);
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rb_insert_color(&data->node, &root_alloc_stat);
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}
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data->call_site = call_site;
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data->alloc_cpu = cpu;
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return 0;
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}
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static int insert_caller_stat(unsigned long call_site,
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int bytes_req, int bytes_alloc)
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{
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struct rb_node **node = &root_caller_stat.rb_node;
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struct rb_node *parent = NULL;
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struct alloc_stat *data = NULL;
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while (*node) {
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parent = *node;
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data = rb_entry(*node, struct alloc_stat, node);
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if (call_site > data->call_site)
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node = &(*node)->rb_right;
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else if (call_site < data->call_site)
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node = &(*node)->rb_left;
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else
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break;
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}
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if (data && data->call_site == call_site) {
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data->hit++;
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data->bytes_req += bytes_req;
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data->bytes_alloc += bytes_alloc;
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} else {
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data = malloc(sizeof(*data));
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if (!data) {
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pr_err("%s: malloc failed\n", __func__);
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return -1;
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}
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data->call_site = call_site;
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data->pingpong = 0;
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data->hit = 1;
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data->bytes_req = bytes_req;
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data->bytes_alloc = bytes_alloc;
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rb_link_node(&data->node, parent, node);
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rb_insert_color(&data->node, &root_caller_stat);
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}
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return 0;
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}
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static int perf_evsel__process_alloc_event(struct perf_evsel *evsel,
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struct perf_sample *sample)
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{
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unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr"),
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call_site = perf_evsel__intval(evsel, sample, "call_site");
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int bytes_req = perf_evsel__intval(evsel, sample, "bytes_req"),
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bytes_alloc = perf_evsel__intval(evsel, sample, "bytes_alloc");
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if (insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, sample->cpu) ||
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insert_caller_stat(call_site, bytes_req, bytes_alloc))
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return -1;
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total_requested += bytes_req;
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total_allocated += bytes_alloc;
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nr_allocs++;
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return 0;
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}
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static int perf_evsel__process_alloc_node_event(struct perf_evsel *evsel,
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struct perf_sample *sample)
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{
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int ret = perf_evsel__process_alloc_event(evsel, sample);
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if (!ret) {
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int node1 = cpunode_map[sample->cpu],
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node2 = perf_evsel__intval(evsel, sample, "node");
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if (node1 != node2)
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nr_cross_allocs++;
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}
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return ret;
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}
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static int ptr_cmp(struct alloc_stat *, struct alloc_stat *);
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static int callsite_cmp(struct alloc_stat *, struct alloc_stat *);
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static struct alloc_stat *search_alloc_stat(unsigned long ptr,
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unsigned long call_site,
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struct rb_root *root,
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sort_fn_t sort_fn)
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{
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struct rb_node *node = root->rb_node;
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struct alloc_stat key = { .ptr = ptr, .call_site = call_site };
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while (node) {
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struct alloc_stat *data;
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int cmp;
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data = rb_entry(node, struct alloc_stat, node);
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cmp = sort_fn(&key, data);
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if (cmp < 0)
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node = node->rb_left;
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else if (cmp > 0)
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node = node->rb_right;
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else
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return data;
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}
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return NULL;
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}
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static int perf_evsel__process_free_event(struct perf_evsel *evsel,
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struct perf_sample *sample)
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{
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unsigned long ptr = perf_evsel__intval(evsel, sample, "ptr");
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struct alloc_stat *s_alloc, *s_caller;
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s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp);
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if (!s_alloc)
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return 0;
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if ((short)sample->cpu != s_alloc->alloc_cpu) {
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s_alloc->pingpong++;
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s_caller = search_alloc_stat(0, s_alloc->call_site,
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&root_caller_stat, callsite_cmp);
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if (!s_caller)
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return -1;
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s_caller->pingpong++;
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}
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s_alloc->alloc_cpu = -1;
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return 0;
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}
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typedef int (*tracepoint_handler)(struct perf_evsel *evsel,
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struct perf_sample *sample);
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static int process_sample_event(struct perf_tool *tool __maybe_unused,
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union perf_event *event,
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struct perf_sample *sample,
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struct perf_evsel *evsel,
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struct machine *machine)
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{
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struct thread *thread = machine__findnew_thread(machine, event->ip.pid);
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if (thread == NULL) {
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pr_debug("problem processing %d event, skipping it.\n",
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event->header.type);
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return -1;
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}
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dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid);
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if (evsel->handler.func != NULL) {
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tracepoint_handler f = evsel->handler.func;
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return f(evsel, sample);
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}
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return 0;
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}
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static struct perf_tool perf_kmem = {
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.sample = process_sample_event,
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.comm = perf_event__process_comm,
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.ordered_samples = true,
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};
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static double fragmentation(unsigned long n_req, unsigned long n_alloc)
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{
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if (n_alloc == 0)
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return 0.0;
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else
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return 100.0 - (100.0 * n_req / n_alloc);
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}
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static void __print_result(struct rb_root *root, struct perf_session *session,
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int n_lines, int is_caller)
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{
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struct rb_node *next;
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struct machine *machine;
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printf("%.102s\n", graph_dotted_line);
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printf(" %-34s |", is_caller ? "Callsite": "Alloc Ptr");
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printf(" Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag\n");
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printf("%.102s\n", graph_dotted_line);
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next = rb_first(root);
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machine = perf_session__find_host_machine(session);
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if (!machine) {
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pr_err("__print_result: couldn't find kernel information\n");
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return;
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}
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while (next && n_lines--) {
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struct alloc_stat *data = rb_entry(next, struct alloc_stat,
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node);
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struct symbol *sym = NULL;
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struct map *map;
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char buf[BUFSIZ];
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u64 addr;
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if (is_caller) {
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addr = data->call_site;
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if (!raw_ip)
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sym = machine__find_kernel_function(machine, addr, &map, NULL);
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} else
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addr = data->ptr;
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if (sym != NULL)
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snprintf(buf, sizeof(buf), "%s+%" PRIx64 "", sym->name,
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addr - map->unmap_ip(map, sym->start));
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else
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snprintf(buf, sizeof(buf), "%#" PRIx64 "", addr);
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printf(" %-34s |", buf);
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printf(" %9llu/%-5lu | %9llu/%-5lu | %8lu | %8lu | %6.3f%%\n",
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(unsigned long long)data->bytes_alloc,
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(unsigned long)data->bytes_alloc / data->hit,
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(unsigned long long)data->bytes_req,
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(unsigned long)data->bytes_req / data->hit,
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(unsigned long)data->hit,
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(unsigned long)data->pingpong,
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fragmentation(data->bytes_req, data->bytes_alloc));
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next = rb_next(next);
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}
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if (n_lines == -1)
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printf(" ... | ... | ... | ... | ... | ... \n");
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printf("%.102s\n", graph_dotted_line);
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}
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static void print_summary(void)
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{
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printf("\nSUMMARY\n=======\n");
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printf("Total bytes requested: %lu\n", total_requested);
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printf("Total bytes allocated: %lu\n", total_allocated);
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printf("Total bytes wasted on internal fragmentation: %lu\n",
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total_allocated - total_requested);
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printf("Internal fragmentation: %f%%\n",
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fragmentation(total_requested, total_allocated));
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printf("Cross CPU allocations: %lu/%lu\n", nr_cross_allocs, nr_allocs);
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}
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static void print_result(struct perf_session *session)
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{
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if (caller_flag)
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__print_result(&root_caller_sorted, session, caller_lines, 1);
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if (alloc_flag)
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__print_result(&root_alloc_sorted, session, alloc_lines, 0);
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print_summary();
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}
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struct sort_dimension {
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const char name[20];
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sort_fn_t cmp;
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struct list_head list;
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};
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static LIST_HEAD(caller_sort);
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static LIST_HEAD(alloc_sort);
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static void sort_insert(struct rb_root *root, struct alloc_stat *data,
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struct list_head *sort_list)
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{
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struct rb_node **new = &(root->rb_node);
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struct rb_node *parent = NULL;
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struct sort_dimension *sort;
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while (*new) {
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struct alloc_stat *this;
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int cmp = 0;
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this = rb_entry(*new, struct alloc_stat, node);
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parent = *new;
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list_for_each_entry(sort, sort_list, list) {
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cmp = sort->cmp(data, this);
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if (cmp)
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break;
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}
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if (cmp > 0)
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new = &((*new)->rb_left);
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else
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new = &((*new)->rb_right);
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}
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rb_link_node(&data->node, parent, new);
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rb_insert_color(&data->node, root);
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}
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static void __sort_result(struct rb_root *root, struct rb_root *root_sorted,
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struct list_head *sort_list)
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{
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struct rb_node *node;
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struct alloc_stat *data;
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for (;;) {
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node = rb_first(root);
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if (!node)
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break;
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rb_erase(node, root);
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data = rb_entry(node, struct alloc_stat, node);
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sort_insert(root_sorted, data, sort_list);
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}
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}
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static void sort_result(void)
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{
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__sort_result(&root_alloc_stat, &root_alloc_sorted, &alloc_sort);
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__sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort);
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}
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|
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static int __cmd_kmem(void)
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{
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int err = -EINVAL;
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struct perf_session *session;
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const struct perf_evsel_str_handler kmem_tracepoints[] = {
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{ "kmem:kmalloc", perf_evsel__process_alloc_event, },
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{ "kmem:kmem_cache_alloc", perf_evsel__process_alloc_event, },
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{ "kmem:kmalloc_node", perf_evsel__process_alloc_node_event, },
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{ "kmem:kmem_cache_alloc_node", perf_evsel__process_alloc_node_event, },
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{ "kmem:kfree", perf_evsel__process_free_event, },
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{ "kmem:kmem_cache_free", perf_evsel__process_free_event, },
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};
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session = perf_session__new(input_name, O_RDONLY, 0, false, &perf_kmem);
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if (session == NULL)
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return -ENOMEM;
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|
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if (perf_session__create_kernel_maps(session) < 0)
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goto out_delete;
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if (!perf_session__has_traces(session, "kmem record"))
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goto out_delete;
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if (perf_session__set_tracepoints_handlers(session, kmem_tracepoints)) {
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pr_err("Initializing perf session tracepoint handlers failed\n");
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return -1;
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}
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|
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setup_pager();
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err = perf_session__process_events(session, &perf_kmem);
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if (err != 0)
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goto out_delete;
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sort_result();
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print_result(session);
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out_delete:
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perf_session__delete(session);
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return err;
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}
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|
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static int ptr_cmp(struct alloc_stat *l, struct alloc_stat *r)
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{
|
|
if (l->ptr < r->ptr)
|
|
return -1;
|
|
else if (l->ptr > r->ptr)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static struct sort_dimension ptr_sort_dimension = {
|
|
.name = "ptr",
|
|
.cmp = ptr_cmp,
|
|
};
|
|
|
|
static int callsite_cmp(struct alloc_stat *l, struct alloc_stat *r)
|
|
{
|
|
if (l->call_site < r->call_site)
|
|
return -1;
|
|
else if (l->call_site > r->call_site)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static struct sort_dimension callsite_sort_dimension = {
|
|
.name = "callsite",
|
|
.cmp = callsite_cmp,
|
|
};
|
|
|
|
static int hit_cmp(struct alloc_stat *l, struct alloc_stat *r)
|
|
{
|
|
if (l->hit < r->hit)
|
|
return -1;
|
|
else if (l->hit > r->hit)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static struct sort_dimension hit_sort_dimension = {
|
|
.name = "hit",
|
|
.cmp = hit_cmp,
|
|
};
|
|
|
|
static int bytes_cmp(struct alloc_stat *l, struct alloc_stat *r)
|
|
{
|
|
if (l->bytes_alloc < r->bytes_alloc)
|
|
return -1;
|
|
else if (l->bytes_alloc > r->bytes_alloc)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static struct sort_dimension bytes_sort_dimension = {
|
|
.name = "bytes",
|
|
.cmp = bytes_cmp,
|
|
};
|
|
|
|
static int frag_cmp(struct alloc_stat *l, struct alloc_stat *r)
|
|
{
|
|
double x, y;
|
|
|
|
x = fragmentation(l->bytes_req, l->bytes_alloc);
|
|
y = fragmentation(r->bytes_req, r->bytes_alloc);
|
|
|
|
if (x < y)
|
|
return -1;
|
|
else if (x > y)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static struct sort_dimension frag_sort_dimension = {
|
|
.name = "frag",
|
|
.cmp = frag_cmp,
|
|
};
|
|
|
|
static int pingpong_cmp(struct alloc_stat *l, struct alloc_stat *r)
|
|
{
|
|
if (l->pingpong < r->pingpong)
|
|
return -1;
|
|
else if (l->pingpong > r->pingpong)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static struct sort_dimension pingpong_sort_dimension = {
|
|
.name = "pingpong",
|
|
.cmp = pingpong_cmp,
|
|
};
|
|
|
|
static struct sort_dimension *avail_sorts[] = {
|
|
&ptr_sort_dimension,
|
|
&callsite_sort_dimension,
|
|
&hit_sort_dimension,
|
|
&bytes_sort_dimension,
|
|
&frag_sort_dimension,
|
|
&pingpong_sort_dimension,
|
|
};
|
|
|
|
#define NUM_AVAIL_SORTS \
|
|
(int)(sizeof(avail_sorts) / sizeof(struct sort_dimension *))
|
|
|
|
static int sort_dimension__add(const char *tok, struct list_head *list)
|
|
{
|
|
struct sort_dimension *sort;
|
|
int i;
|
|
|
|
for (i = 0; i < NUM_AVAIL_SORTS; i++) {
|
|
if (!strcmp(avail_sorts[i]->name, tok)) {
|
|
sort = malloc(sizeof(*sort));
|
|
if (!sort) {
|
|
pr_err("%s: malloc failed\n", __func__);
|
|
return -1;
|
|
}
|
|
memcpy(sort, avail_sorts[i], sizeof(*sort));
|
|
list_add_tail(&sort->list, list);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int setup_sorting(struct list_head *sort_list, const char *arg)
|
|
{
|
|
char *tok;
|
|
char *str = strdup(arg);
|
|
|
|
if (!str) {
|
|
pr_err("%s: strdup failed\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
while (true) {
|
|
tok = strsep(&str, ",");
|
|
if (!tok)
|
|
break;
|
|
if (sort_dimension__add(tok, sort_list) < 0) {
|
|
error("Unknown --sort key: '%s'", tok);
|
|
free(str);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
free(str);
|
|
return 0;
|
|
}
|
|
|
|
static int parse_sort_opt(const struct option *opt __maybe_unused,
|
|
const char *arg, int unset __maybe_unused)
|
|
{
|
|
if (!arg)
|
|
return -1;
|
|
|
|
if (caller_flag > alloc_flag)
|
|
return setup_sorting(&caller_sort, arg);
|
|
else
|
|
return setup_sorting(&alloc_sort, arg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_caller_opt(const struct option *opt __maybe_unused,
|
|
const char *arg __maybe_unused,
|
|
int unset __maybe_unused)
|
|
{
|
|
caller_flag = (alloc_flag + 1);
|
|
return 0;
|
|
}
|
|
|
|
static int parse_alloc_opt(const struct option *opt __maybe_unused,
|
|
const char *arg __maybe_unused,
|
|
int unset __maybe_unused)
|
|
{
|
|
alloc_flag = (caller_flag + 1);
|
|
return 0;
|
|
}
|
|
|
|
static int parse_line_opt(const struct option *opt __maybe_unused,
|
|
const char *arg, int unset __maybe_unused)
|
|
{
|
|
int lines;
|
|
|
|
if (!arg)
|
|
return -1;
|
|
|
|
lines = strtoul(arg, NULL, 10);
|
|
|
|
if (caller_flag > alloc_flag)
|
|
caller_lines = lines;
|
|
else
|
|
alloc_lines = lines;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __cmd_record(int argc, const char **argv)
|
|
{
|
|
const char * const record_args[] = {
|
|
"record", "-a", "-R", "-f", "-c", "1",
|
|
"-e", "kmem:kmalloc",
|
|
"-e", "kmem:kmalloc_node",
|
|
"-e", "kmem:kfree",
|
|
"-e", "kmem:kmem_cache_alloc",
|
|
"-e", "kmem:kmem_cache_alloc_node",
|
|
"-e", "kmem:kmem_cache_free",
|
|
};
|
|
unsigned int rec_argc, i, j;
|
|
const char **rec_argv;
|
|
|
|
rec_argc = ARRAY_SIZE(record_args) + argc - 1;
|
|
rec_argv = calloc(rec_argc + 1, sizeof(char *));
|
|
|
|
if (rec_argv == NULL)
|
|
return -ENOMEM;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(record_args); i++)
|
|
rec_argv[i] = strdup(record_args[i]);
|
|
|
|
for (j = 1; j < (unsigned int)argc; j++, i++)
|
|
rec_argv[i] = argv[j];
|
|
|
|
return cmd_record(i, rec_argv, NULL);
|
|
}
|
|
|
|
int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused)
|
|
{
|
|
const char * const default_sort_order = "frag,hit,bytes";
|
|
const struct option kmem_options[] = {
|
|
OPT_STRING('i', "input", &input_name, "file", "input file name"),
|
|
OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL,
|
|
"show per-callsite statistics", parse_caller_opt),
|
|
OPT_CALLBACK_NOOPT(0, "alloc", NULL, NULL,
|
|
"show per-allocation statistics", parse_alloc_opt),
|
|
OPT_CALLBACK('s', "sort", NULL, "key[,key2...]",
|
|
"sort by keys: ptr, call_site, bytes, hit, pingpong, frag",
|
|
parse_sort_opt),
|
|
OPT_CALLBACK('l', "line", NULL, "num", "show n lines", parse_line_opt),
|
|
OPT_BOOLEAN(0, "raw-ip", &raw_ip, "show raw ip instead of symbol"),
|
|
OPT_END()
|
|
};
|
|
const char * const kmem_usage[] = {
|
|
"perf kmem [<options>] {record|stat}",
|
|
NULL
|
|
};
|
|
argc = parse_options(argc, argv, kmem_options, kmem_usage, 0);
|
|
|
|
if (!argc)
|
|
usage_with_options(kmem_usage, kmem_options);
|
|
|
|
symbol__init();
|
|
|
|
if (!strncmp(argv[0], "rec", 3)) {
|
|
return __cmd_record(argc, argv);
|
|
} else if (!strcmp(argv[0], "stat")) {
|
|
if (setup_cpunode_map())
|
|
return -1;
|
|
|
|
if (list_empty(&caller_sort))
|
|
setup_sorting(&caller_sort, default_sort_order);
|
|
if (list_empty(&alloc_sort))
|
|
setup_sorting(&alloc_sort, default_sort_order);
|
|
|
|
return __cmd_kmem();
|
|
} else
|
|
usage_with_options(kmem_usage, kmem_options);
|
|
|
|
return 0;
|
|
}
|
|
|