diff options
author | zhangwei(Jovi) <jovi.zhangwei@huawei.com> | 2014-01-17 17:08:38 +0900 |
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committer | Steven Rostedt <rostedt@goodmis.org> | 2014-02-20 12:30:09 -0500 |
commit | 70ed91c6ec7f8bf20369634017d887d48ac979d2 (patch) | |
tree | c8b69373ee58aa2294016ddfb773a3490f5dca6d /include/asm-generic/tlbflush.h | |
parent | dd9fa555d7bbfcc7dbc63eb744806e9f6cb62e9f (diff) |
tracing/uprobes: Support ftrace_event_file base multibuffer
Support multi-buffer on uprobe-based dynamic events by
using ftrace_event_file.
This patch is based kprobe-based dynamic events multibuffer
support work initially, commited by Masami(commit 41a7dd420c),
but revised as below:
Oleg changed the kprobe-based multibuffer design from
array-pointers of ftrace_event_file into simple list,
so this patch also change to the list design.
rcu_read_lock/unlock added into uprobe_trace_func/uretprobe_trace_func,
to synchronize with ftrace_event_file list add and delete.
Even though we allow multi-uprobes instances now,
but TP_FLAG_PROFILE/TP_FLAG_TRACE are still mutually exclusive
in probe_event_enable currently, this means we cannot allow
one user is using uprobe-tracer, and another user is using
perf-probe on same uprobe concurrently.
(Perhaps this will be fix in future, kprobe don't have this
limitation now)
Link: http://lkml.kernel.org/r/1389946120-19610-4-git-send-email-namhyung@kernel.org
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'include/asm-generic/tlbflush.h')
0 files changed, 0 insertions, 0 deletions