diff options
| -rw-r--r-- | tools/perf/builtin-kmem.c | 122 |
1 files changed, 94 insertions, 28 deletions
diff --git a/tools/perf/builtin-kmem.c b/tools/perf/builtin-kmem.c index 1ecf3f4415c..173d6db42ec 100644 --- a/tools/perf/builtin-kmem.c +++ b/tools/perf/builtin-kmem.c @@ -40,13 +40,14 @@ static int *cpunode_map; static int max_cpu_num; struct alloc_stat { - union { - u64 call_site; - u64 ptr; - }; + u64 call_site; + u64 ptr; u64 bytes_req; u64 bytes_alloc; u32 hit; + u32 pingpong; + + short alloc_cpu; struct rb_node node; }; @@ -144,16 +145,13 @@ process_comm_event(event_t *event, unsigned long offset, unsigned long head) return 0; } -static void insert_alloc_stat(unsigned long ptr, - int bytes_req, int bytes_alloc) +static void insert_alloc_stat(unsigned long call_site, unsigned long ptr, + int bytes_req, int bytes_alloc, int cpu) { struct rb_node **node = &root_alloc_stat.rb_node; struct rb_node *parent = NULL; struct alloc_stat *data = NULL; - if (!alloc_flag) - return; - while (*node) { parent = *node; data = rb_entry(*node, struct alloc_stat, node); @@ -172,7 +170,10 @@ static void insert_alloc_stat(unsigned long ptr, data->bytes_alloc += bytes_req; } else { data = malloc(sizeof(*data)); + if (!data) + die("malloc"); data->ptr = ptr; + data->pingpong = 0; data->hit = 1; data->bytes_req = bytes_req; data->bytes_alloc = bytes_alloc; @@ -180,6 +181,8 @@ static void insert_alloc_stat(unsigned long ptr, rb_link_node(&data->node, parent, node); rb_insert_color(&data->node, &root_alloc_stat); } + data->call_site = call_site; + data->alloc_cpu = cpu; } static void insert_caller_stat(unsigned long call_site, @@ -189,9 +192,6 @@ static void insert_caller_stat(unsigned long call_site, struct rb_node *parent = NULL; struct alloc_stat *data = NULL; - if (!caller_flag) - return; - while (*node) { parent = *node; data = rb_entry(*node, struct alloc_stat, node); @@ -210,7 +210,10 @@ static void insert_caller_stat(unsigned long call_site, data->bytes_alloc += bytes_req; } else { data = malloc(sizeof(*data)); + if (!data) + die("malloc"); data->call_site = call_site; + data->pingpong = 0; data->hit = 1; data->bytes_req = bytes_req; data->bytes_alloc = bytes_alloc; @@ -238,7 +241,7 @@ static void process_alloc_event(struct raw_event_sample *raw, bytes_req = raw_field_value(event, "bytes_req", raw->data); bytes_alloc = raw_field_value(event, "bytes_alloc", raw->data); - insert_alloc_stat(ptr, bytes_req, bytes_alloc); + insert_alloc_stat(call_site, ptr, bytes_req, bytes_alloc, cpu); insert_caller_stat(call_site, bytes_req, bytes_alloc); total_requested += bytes_req; @@ -253,12 +256,58 @@ static void process_alloc_event(struct raw_event_sample *raw, nr_allocs++; } -static void process_free_event(struct raw_event_sample *raw __used, - struct event *event __used, - int cpu __used, +static int ptr_cmp(struct alloc_stat *, struct alloc_stat *); +static int callsite_cmp(struct alloc_stat *, struct alloc_stat *); + +static struct alloc_stat *search_alloc_stat(unsigned long ptr, + unsigned long call_site, + struct rb_root *root, + sort_fn_t sort_fn) +{ + struct rb_node *node = root->rb_node; + struct alloc_stat key = { .ptr = ptr, .call_site = call_site }; + + while (node) { + struct alloc_stat *data; + int cmp; + + data = rb_entry(node, struct alloc_stat, node); + + cmp = sort_fn(&key, data); + if (cmp < 0) + node = node->rb_left; + else if (cmp > 0) + node = node->rb_right; + else + return data; + } + return NULL; +} + +static void process_free_event(struct raw_event_sample *raw, + struct event *event, + int cpu, u64 timestamp __used, struct thread *thread __used) { + unsigned long ptr; + struct alloc_stat *s_alloc, *s_caller; + + ptr = raw_field_value(event, "ptr", raw->data); + + s_alloc = search_alloc_stat(ptr, 0, &root_alloc_stat, ptr_cmp); + if (!s_alloc) + return; + + if (cpu != s_alloc->alloc_cpu) { + s_alloc->pingpong++; + + s_caller = search_alloc_stat(0, s_alloc->call_site, + &root_caller_stat, callsite_cmp); + assert(s_caller); + s_caller->pingpong++; + } + s_alloc->alloc_cpu = -1; } static void @@ -379,10 +428,10 @@ static void __print_result(struct rb_root *root, int n_lines, int is_caller) { struct rb_node *next; - printf("%.78s\n", graph_dotted_line); - printf("%-28s|", is_caller ? "Callsite": "Alloc Ptr"); - printf("Total_alloc/Per | Total_req/Per | Hit | Frag\n"); - printf("%.78s\n", graph_dotted_line); + printf("%.102s\n", graph_dotted_line); + printf(" %-34s |", is_caller ? "Callsite": "Alloc Ptr"); + printf(" Total_alloc/Per | Total_req/Per | Hit | Ping-pong | Frag\n"); + printf("%.102s\n", graph_dotted_line); next = rb_first(root); @@ -390,7 +439,7 @@ static void __print_result(struct rb_root *root, int n_lines, int is_caller) struct alloc_stat *data = rb_entry(next, struct alloc_stat, node); struct symbol *sym = NULL; - char bf[BUFSIZ]; + char buf[BUFSIZ]; u64 addr; if (is_caller) { @@ -402,26 +451,28 @@ static void __print_result(struct rb_root *root, int n_lines, int is_caller) addr = data->ptr; if (sym != NULL) - snprintf(bf, sizeof(bf), "%s+%Lx", sym->name, + snprintf(buf, sizeof(buf), "%s+%Lx", sym->name, addr - sym->start); else - snprintf(bf, sizeof(bf), "%#Lx", addr); + snprintf(buf, sizeof(buf), "%#Lx", addr); + printf(" %-34s |", buf); - printf("%-28s|%8llu/%-6lu |%8llu/%-6lu|%6lu|%8.3f%%\n", - bf, (unsigned long long)data->bytes_alloc, + printf(" %9llu/%-5lu | %9llu/%-5lu | %6lu | %8lu | %6.3f%%\n", + (unsigned long long)data->bytes_alloc, (unsigned long)data->bytes_alloc / data->hit, (unsigned long long)data->bytes_req, (unsigned long)data->bytes_req / data->hit, (unsigned long)data->hit, + (unsigned long)data->pingpong, fragmentation(data->bytes_req, data->bytes_alloc)); next = rb_next(next); } if (n_lines == -1) - printf(" ... | ... | ... | ... | ... \n"); + printf(" ... | ... | ... | ... | ... | ... \n"); - printf("%.78s\n", graph_dotted_line); + printf("%.102s\n", graph_dotted_line); } static void print_summary(void) @@ -597,12 +648,27 @@ static struct sort_dimension frag_sort_dimension = { .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 \ @@ -703,7 +769,7 @@ static const struct option kmem_options[] = { "stat selector, Pass 'alloc' or 'caller'.", parse_stat_opt), OPT_CALLBACK('s', "sort", NULL, "key[,key2...]", - "sort by key(s): ptr, call_site, bytes, hit, frag", + "sort by keys: ptr, call_site, bytes, hit, pingpong, frag", parse_sort_opt), OPT_CALLBACK('l', "line", NULL, "num", "show n lins", |