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| author | Namhyung Kim <namhyung.kim@lge.com> | 2013-11-25 05:42:47 +0100 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-01-03 02:57:05 +0100 |
| commit | b7e0bf341f6cfa92ae0a0e3d0c3496729595e1e9 (patch) | |
| tree | 0831ae7ab363f3789c5cb14bbf4973bfe17287bc /kernel/trace/trace_probe.h | |
| parent | uprobes: Allocate ->utask before handler_chain() for tracing handlers (diff) | |
| download | linux-b7e0bf341f6cfa92ae0a0e3d0c3496729595e1e9.tar.xz linux-b7e0bf341f6cfa92ae0a0e3d0c3496729595e1e9.zip | |
tracing/uprobes: Add @+file_offset fetch method
Enable to fetch data from a file offset. Currently it only supports
fetching from same binary uprobe set. It'll translate the file offset
to a proper virtual address in the process.
The syntax is "@+OFFSET" as it does similar to normal memory fetching
(@ADDR) which does no address translation.
Suggested-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: zhangwei(Jovi) <jovi.zhangwei@huawei.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'kernel/trace/trace_probe.h')
| -rw-r--r-- | kernel/trace/trace_probe.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/trace/trace_probe.h b/kernel/trace/trace_probe.h index 2d5b8f5f5310..e29d743fef5d 100644 --- a/kernel/trace/trace_probe.h +++ b/kernel/trace/trace_probe.h @@ -106,6 +106,7 @@ enum { FETCH_MTD_symbol, FETCH_MTD_deref, FETCH_MTD_bitfield, + FETCH_MTD_file_offset, FETCH_MTD_END, }; @@ -217,6 +218,7 @@ ASSIGN_FETCH_FUNC(memory, ftype), \ ASSIGN_FETCH_FUNC(symbol, ftype), \ ASSIGN_FETCH_FUNC(deref, ftype), \ ASSIGN_FETCH_FUNC(bitfield, ftype), \ +ASSIGN_FETCH_FUNC(file_offset, ftype), \ } \ } |