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author | Zhang, Yanmin <yanmin_zhang@linux.intel.com> | 2010-04-19 13:32:50 +0800 |
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committer | Avi Kivity <avi@redhat.com> | 2010-04-19 12:37:24 +0300 |
commit | a1645ce12adb6c9cc9e19d7695466204e3f017fe (patch) | |
tree | 5d31aaaf534997e6e9cebc07f38eca35f76986cf /tools/perf/util/map.c | |
parent | ff9d07a0e7ce756a183e7c2e483aec452ee6b574 (diff) | |
download | linux-stable-a1645ce12adb6c9cc9e19d7695466204e3f017fe.tar.gz linux-stable-a1645ce12adb6c9cc9e19d7695466204e3f017fe.tar.bz2 linux-stable-a1645ce12adb6c9cc9e19d7695466204e3f017fe.zip |
perf: 'perf kvm' tool for monitoring guest performance from host
Here is the patch of userspace perf tool.
Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'tools/perf/util/map.c')
-rw-r--r-- | tools/perf/util/map.c | 139 |
1 files changed, 137 insertions, 2 deletions
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index 37913b241bdf..7facd016ec97 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -4,6 +4,7 @@ #include <stdlib.h> #include <string.h> #include <stdio.h> +#include <unistd.h> #include "map.h" const char *map_type__name[MAP__NR_TYPES] = { @@ -37,9 +38,11 @@ void map__init(struct map *self, enum map_type type, self->map_ip = map__map_ip; self->unmap_ip = map__unmap_ip; RB_CLEAR_NODE(&self->rb_node); + self->groups = NULL; } -struct map *map__new(u64 start, u64 len, u64 pgoff, u32 pid, char *filename, +struct map *map__new(struct list_head *dsos__list, u64 start, u64 len, + u64 pgoff, u32 pid, char *filename, enum map_type type, char *cwd, int cwdlen) { struct map *self = malloc(sizeof(*self)); @@ -66,7 +69,7 @@ struct map *map__new(u64 start, u64 len, u64 pgoff, u32 pid, char *filename, filename = newfilename; } - dso = dsos__findnew(filename); + dso = __dsos__findnew(dsos__list, filename); if (dso == NULL) goto out_delete; @@ -242,6 +245,7 @@ void map_groups__init(struct map_groups *self) self->maps[i] = RB_ROOT; INIT_LIST_HEAD(&self->removed_maps[i]); } + self->this_kerninfo = NULL; } void map_groups__flush(struct map_groups *self) @@ -508,3 +512,134 @@ struct map *maps__find(struct rb_root *maps, u64 ip) return NULL; } + +struct kernel_info *add_new_kernel_info(struct rb_root *kerninfo_root, + pid_t pid, const char *root_dir) +{ + struct rb_node **p = &kerninfo_root->rb_node; + struct rb_node *parent = NULL; + struct kernel_info *kerninfo, *pos; + + kerninfo = malloc(sizeof(struct kernel_info)); + if (!kerninfo) + return NULL; + + kerninfo->pid = pid; + map_groups__init(&kerninfo->kmaps); + kerninfo->root_dir = strdup(root_dir); + RB_CLEAR_NODE(&kerninfo->rb_node); + INIT_LIST_HEAD(&kerninfo->dsos__user); + INIT_LIST_HEAD(&kerninfo->dsos__kernel); + kerninfo->kmaps.this_kerninfo = kerninfo; + + while (*p != NULL) { + parent = *p; + pos = rb_entry(parent, struct kernel_info, rb_node); + if (pid < pos->pid) + p = &(*p)->rb_left; + else + p = &(*p)->rb_right; + } + + rb_link_node(&kerninfo->rb_node, parent, p); + rb_insert_color(&kerninfo->rb_node, kerninfo_root); + + return kerninfo; +} + +struct kernel_info *kerninfo__find(struct rb_root *kerninfo_root, pid_t pid) +{ + struct rb_node **p = &kerninfo_root->rb_node; + struct rb_node *parent = NULL; + struct kernel_info *kerninfo; + struct kernel_info *default_kerninfo = NULL; + + while (*p != NULL) { + parent = *p; + kerninfo = rb_entry(parent, struct kernel_info, rb_node); + if (pid < kerninfo->pid) + p = &(*p)->rb_left; + else if (pid > kerninfo->pid) + p = &(*p)->rb_right; + else + return kerninfo; + if (!kerninfo->pid) + default_kerninfo = kerninfo; + } + + return default_kerninfo; +} + +struct kernel_info *kerninfo__findhost(struct rb_root *kerninfo_root) +{ + struct rb_node **p = &kerninfo_root->rb_node; + struct rb_node *parent = NULL; + struct kernel_info *kerninfo; + pid_t pid = HOST_KERNEL_ID; + + while (*p != NULL) { + parent = *p; + kerninfo = rb_entry(parent, struct kernel_info, rb_node); + if (pid < kerninfo->pid) + p = &(*p)->rb_left; + else if (pid > kerninfo->pid) + p = &(*p)->rb_right; + else + return kerninfo; + } + + return NULL; +} + +struct kernel_info *kerninfo__findnew(struct rb_root *kerninfo_root, pid_t pid) +{ + char path[PATH_MAX]; + const char *root_dir; + int ret; + struct kernel_info *kerninfo = kerninfo__find(kerninfo_root, pid); + + if (!kerninfo || kerninfo->pid != pid) { + if (pid == HOST_KERNEL_ID || pid == DEFAULT_GUEST_KERNEL_ID) + root_dir = ""; + else { + if (!symbol_conf.guestmount) + goto out; + sprintf(path, "%s/%d", symbol_conf.guestmount, pid); + ret = access(path, R_OK); + if (ret) { + pr_err("Can't access file %s\n", path); + goto out; + } + root_dir = path; + } + kerninfo = add_new_kernel_info(kerninfo_root, pid, root_dir); + } + +out: + return kerninfo; +} + +void kerninfo__process_allkernels(struct rb_root *kerninfo_root, + process_kernel_info process, + void *data) +{ + struct rb_node *nd; + + for (nd = rb_first(kerninfo_root); nd; nd = rb_next(nd)) { + struct kernel_info *pos = rb_entry(nd, struct kernel_info, + rb_node); + process(pos, data); + } +} + +char *kern_mmap_name(struct kernel_info *kerninfo, char *buff) +{ + if (is_host_kernel(kerninfo)) + sprintf(buff, "[%s]", "kernel.kallsyms"); + else if (is_default_guest(kerninfo)) + sprintf(buff, "[%s]", "guest.kernel.kallsyms"); + else + sprintf(buff, "[%s.%d]", "guest.kernel.kallsyms", kerninfo->pid); + + return buff; +} |