diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-11 04:34:46 -0300 |
---|---|---|
committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-09-11 04:34:46 -0300 |
commit | 863981e96738983919de841ec669e157e6bdaeb0 (patch) | |
tree | d6d89a12e7eb8017837c057935a2271290907f76 /tools/perf/util/thread-stack.c | |
parent | 8dec7c70575785729a6a9e6719a955e9c545bcab (diff) |
Linux-libre 4.7.1-gnupck-4.7.1-gnu
Diffstat (limited to 'tools/perf/util/thread-stack.c')
-rw-r--r-- | tools/perf/util/thread-stack.c | 139 |
1 files changed, 1 insertions, 138 deletions
diff --git a/tools/perf/util/thread-stack.c b/tools/perf/util/thread-stack.c index 679688e70..825086aa9 100644 --- a/tools/perf/util/thread-stack.c +++ b/tools/perf/util/thread-stack.c @@ -22,44 +22,9 @@ #include "debug.h" #include "symbol.h" #include "comm.h" +#include "call-path.h" #include "thread-stack.h" -#define CALL_PATH_BLOCK_SHIFT 8 -#define CALL_PATH_BLOCK_SIZE (1 << CALL_PATH_BLOCK_SHIFT) -#define CALL_PATH_BLOCK_MASK (CALL_PATH_BLOCK_SIZE - 1) - -struct call_path_block { - struct call_path cp[CALL_PATH_BLOCK_SIZE]; - struct list_head node; -}; - -/** - * struct call_path_root - root of all call paths. - * @call_path: root call path - * @blocks: list of blocks to store call paths - * @next: next free space - * @sz: number of spaces - */ -struct call_path_root { - struct call_path call_path; - struct list_head blocks; - size_t next; - size_t sz; -}; - -/** - * struct call_return_processor - provides a call-back to consume call-return - * information. - * @cpr: call path root - * @process: call-back that accepts call/return information - * @data: anonymous data for call-back - */ -struct call_return_processor { - struct call_path_root *cpr; - int (*process)(struct call_return *cr, void *data); - void *data; -}; - #define STACK_GROWTH 2048 /** @@ -335,108 +300,6 @@ void thread_stack__sample(struct thread *thread, struct ip_callchain *chain, chain->ips[i] = thread->ts->stack[thread->ts->cnt - i].ret_addr; } -static void call_path__init(struct call_path *cp, struct call_path *parent, - struct symbol *sym, u64 ip, bool in_kernel) -{ - cp->parent = parent; - cp->sym = sym; - cp->ip = sym ? 0 : ip; - cp->db_id = 0; - cp->in_kernel = in_kernel; - RB_CLEAR_NODE(&cp->rb_node); - cp->children = RB_ROOT; -} - -static struct call_path_root *call_path_root__new(void) -{ - struct call_path_root *cpr; - - cpr = zalloc(sizeof(struct call_path_root)); - if (!cpr) - return NULL; - call_path__init(&cpr->call_path, NULL, NULL, 0, false); - INIT_LIST_HEAD(&cpr->blocks); - return cpr; -} - -static void call_path_root__free(struct call_path_root *cpr) -{ - struct call_path_block *pos, *n; - - list_for_each_entry_safe(pos, n, &cpr->blocks, node) { - list_del(&pos->node); - free(pos); - } - free(cpr); -} - -static struct call_path *call_path__new(struct call_path_root *cpr, - struct call_path *parent, - struct symbol *sym, u64 ip, - bool in_kernel) -{ - struct call_path_block *cpb; - struct call_path *cp; - size_t n; - - if (cpr->next < cpr->sz) { - cpb = list_last_entry(&cpr->blocks, struct call_path_block, - node); - } else { - cpb = zalloc(sizeof(struct call_path_block)); - if (!cpb) - return NULL; - list_add_tail(&cpb->node, &cpr->blocks); - cpr->sz += CALL_PATH_BLOCK_SIZE; - } - - n = cpr->next++ & CALL_PATH_BLOCK_MASK; - cp = &cpb->cp[n]; - - call_path__init(cp, parent, sym, ip, in_kernel); - - return cp; -} - -static struct call_path *call_path__findnew(struct call_path_root *cpr, - struct call_path *parent, - struct symbol *sym, u64 ip, u64 ks) -{ - struct rb_node **p; - struct rb_node *node_parent = NULL; - struct call_path *cp; - bool in_kernel = ip >= ks; - - if (sym) - ip = 0; - - if (!parent) - return call_path__new(cpr, parent, sym, ip, in_kernel); - - p = &parent->children.rb_node; - while (*p != NULL) { - node_parent = *p; - cp = rb_entry(node_parent, struct call_path, rb_node); - - if (cp->sym == sym && cp->ip == ip) - return cp; - - if (sym < cp->sym || (sym == cp->sym && ip < cp->ip)) - p = &(*p)->rb_left; - else - p = &(*p)->rb_right; - } - - cp = call_path__new(cpr, parent, sym, ip, in_kernel); - if (!cp) - return NULL; - - rb_link_node(&cp->rb_node, node_parent, p); - rb_insert_color(&cp->rb_node, &parent->children); - - return cp; -} - struct call_return_processor * call_return_processor__new(int (*process)(struct call_return *cr, void *data), void *data) |