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author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-05-25 14:49:11 (GMT) |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-05-27 15:21:44 (GMT) |
commit | 9402e23f90c5a672db7170e4c0f1fc80ca8c009a (patch) | |
tree | 510de4ed0954400e69af7eed0ff7b1cb3273100b /tools/perf/util | |
parent | f7e365eb61d4d78f2f5e66d859664048c2921df2 (diff) | |
download | linux-9402e23f90c5a672db7170e4c0f1fc80ca8c009a.tar.xz |
perf tools: Import rb_erase_init from block/ in the kernel sources
I was assuming rb_erase() was setting things up like list_del_init, but
the fact that thread__delete() was being sucessfull is because the last
thing before deleting is to remove the thread from the
machine->dead_threads list, using list_del_init(), that has the same
effect as using rb_erase_init()...
Introduce this function so that we can use it when removing objects from
rb_trees.
Then we will be able to BUG_ON(still on a list) in destructors.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-55b16mbtndjyd7zzg8nmnamx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
-rw-r--r-- | tools/perf/util/include/linux/rbtree.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/perf/util/include/linux/rbtree.h b/tools/perf/util/include/linux/rbtree.h index 2a030c5..f06d89f 100644 --- a/tools/perf/util/include/linux/rbtree.h +++ b/tools/perf/util/include/linux/rbtree.h @@ -1,2 +1,16 @@ +#ifndef __TOOLS_LINUX_PERF_RBTREE_H +#define __TOOLS_LINUX_PERF_RBTREE_H #include <stdbool.h> #include "../../../../include/linux/rbtree.h" + +/* + * Handy for checking that we are not deleting an entry that is + * already in a list, found in block/{blk-throttle,cfq-iosched}.c, + * probably should be moved to lib/rbtree.c... + */ +static inline void rb_erase_init(struct rb_node *n, struct rb_root *root) +{ + rb_erase(n, root); + RB_CLEAR_NODE(n); +} +#endif /* __TOOLS_LINUX_PERF_RBTREE_H */ |