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439d473b47
Representing modules as struct map entries, backed by a DSO, etc,
using /proc/modules to find where the module is loaded.
DSOs now can have a short and long name, so that in verbose mode we
can show exactly which .ko or vmlinux image was used.
As kernel modules now are a DSO separate from the kernel, we can
ask for just the hits for a particular set of kernel modules, just
like we can do with shared libraries:
[root@doppio linux-2.6-tip]# perf report -n --vmlinux
/home/acme/git/build/tip-recvmmsg/vmlinux --modules --dsos \[drm\] | head -15
84.58% 13266 Xorg [k] drm_clflush_pages
4.02% 630 Xorg [k] trace_kmalloc.clone.0
3.95% 619 Xorg [k] drm_ioctl
2.07% 324 Xorg [k] drm_addbufs
1.68% 263 Xorg [k] drm_gem_close_ioctl
0.77% 120 Xorg [k] drm_setmaster_ioctl
0.70% 110 Xorg [k] drm_lastclose
0.68% 106 Xorg [k] drm_open
0.54% 85 Xorg [k] drm_mm_search_free
[root@doppio linux-2.6-tip]#
Specifying --dsos /lib/modules/2.6.31-tip/kernel/drivers/gpu/drm/drm.ko
would have the same effect. Allowing specifying just 'drm.ko' is left
for another patch.
Processing kallsyms so that per kernel module struct map are
instantiated was also left for another patch. That will allow
removing the module name from each of its symbols.
struct symbol was reduced by removing the ->module backpointer and
moving it (well now the map) to struct symbol_entry in perf top,
that is its only user right now.
The total linecount went down by ~500 lines.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Avi Kivity <avi@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
#ifndef __PERF_THREAD_H
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#define __PERF_THREAD_H
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#include <linux/rbtree.h>
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#include <unistd.h>
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#include "symbol.h"
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struct thread {
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struct rb_node rb_node;
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struct rb_root maps;
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struct list_head removed_maps;
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pid_t pid;
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char shortname[3];
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char *comm;
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};
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int thread__set_comm(struct thread *self, const char *comm);
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struct thread *
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threads__findnew(pid_t pid, struct rb_root *threads, struct thread **last_match);
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struct thread *
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register_idle_thread(struct rb_root *threads, struct thread **last_match);
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void thread__insert_map(struct thread *self, struct map *map);
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int thread__fork(struct thread *self, struct thread *parent);
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size_t threads__fprintf(FILE *fp, struct rb_root *threads);
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void maps__insert(struct rb_root *maps, struct map *map);
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struct map *maps__find(struct rb_root *maps, u64 ip);
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struct symbol *kernel_maps__find_symbol(const u64 ip, struct map **mapp);
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struct map *kernel_maps__find_by_dso_name(const char *name);
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static inline struct map *thread__find_map(struct thread *self, u64 ip)
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{
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return self ? maps__find(&self->maps, ip) : NULL;
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}
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#endif /* __PERF_THREAD_H */
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