diff options
| author | Markus Metzger <markus.t.metzger@intel.com> | 2013-06-03 15:39:35 +0200 |
|---|---|---|
| committer | Markus Metzger <markus.t.metzger@intel.com> | 2014-01-16 13:11:42 +0100 |
| commit | 969c39fbcd6a5675c1f4b97cd23d680e4b5b6487 (patch) | |
| tree | 54d7a2c546ecf86fbe37536db86d0916734203d8 /gdb/amd64-linux-nat.c | |
| parent | 0b722aec57e2e54083c1d56657762945ad4604fc (diff) | |
btrace, gdbserver: read branch trace incrementally
Read branch trace data incrementally and extend the current trace rather than
discarding it and reading the entire trace buffer each time.
If the branch trace buffer overflowed, we can't extend the current trace so we
discard it and start anew by reading the entire branch trace buffer.
2014-01-16 Markus Metzger <markus.t.metzger@intel.com>
* common/linux-btrace.c (perf_event_read_bts, linux_read_btrace):
Support delta reads.
(linux_disable_btrace): Change return type.
* common/linux-btrace.h (linux_read_btrace): Change parameters
and return type to allow error reporting. Update users.
(linux_disable_btrace): Change return type. Update users.
* common/btrace-common.h (btrace_read_type) <BTRACE_READ_DELTA>:
New.
(btrace_error): New.
(btrace_block) <begin>: Comment on BEGIN == 0.
* btrace.c (btrace_compute_ftrace): Start from the end of
the current trace.
(btrace_stitch_trace, btrace_clear_history): New.
(btrace_fetch): Read delta trace, return if replaying.
(btrace_clear): Move clear history code to btrace_clear_history.
(parse_xml_btrace): Throw an error if parsing failed.
* target.h (struct target_ops) <to_read_btrace>: Change parameters
and return type to allow error reporting.
(target_read_btrace): Change parameters and return type to allow
error reporting.
* target.c (target_read_btrace): Update.
* remote.c (remote_read_btrace): Support delta reads. Pass
errors on.
* NEWS: Announce it.
gdbserver/
* target.h (target_ops) <read_btrace>: Change parameters and
return type to allow error reporting.
* server.c (handle_qxfer_btrace): Support delta reads. Pass
trace reading errors on.
* linux-low.c (linux_low_read_btrace): Pass trace reading
errors on.
(linux_low_disable_btrace): New.
Diffstat (limited to 'gdb/amd64-linux-nat.c')
| -rw-r--r-- | gdb/amd64-linux-nat.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gdb/amd64-linux-nat.c b/gdb/amd64-linux-nat.c index 7c967f8000..55973a611e 100644 --- a/gdb/amd64-linux-nat.c +++ b/gdb/amd64-linux-nat.c @@ -1173,10 +1173,10 @@ amd64_linux_enable_btrace (ptid_t ptid) static void amd64_linux_disable_btrace (struct btrace_target_info *tinfo) { - int errcode = linux_disable_btrace (tinfo); + enum btrace_error errcode = linux_disable_btrace (tinfo); - if (errcode != 0) - error (_("Could not disable branch tracing: %s."), safe_strerror (errcode)); + if (errcode != BTRACE_ERR_NONE) + error (_("Could not disable branch tracing.")); } /* Teardown branch tracing. */ |