Yao Qi dd2e65cc2c Call target_can_download_tracepoint if there are tracepoints to download ... Nowadays, GDB calls target_can_download_tracepoint at the entry of download_tracepoint_locations, which is called by. update_global_location_list. Sometimes, it is not needed to call target_can_download_tracepoint at all because there is no tracepoint created. In remote target, target_can_download_tracepoint send qTStatus to the remote in order to know whether tracepoint can be downloaded or not. This means some redundant qTStatus packets are sent. This patch is to teach GDB to call target_can_download_tracepoint lazily, only on the moment there are tracepoint to download. gdb.perf/single-step.exp (with a local patch to measure RSP packets) shows the number of RSP packets is reduced because there is no tracepoint at all, so GDB doesn't send qTStatus any more. # of RSP packets original patched single-step rsp 1000 7000 6000 single-step rsp 2000 14000 12000 single-step rsp 3000 21000 18000 single-step rsp 4000 28000 24000 gdb: 2015-09-10 Yao Qi <yao.qi@linaro.org> * breakpoint.c (download_tracepoint_locations): New local can_download_tracepoint. Check the result of target_can_download_tracepoint and save it in can_download_tracepoint if there are tracepoints to download. * linux-nat.h (enum tribool): Move it to ... * common/common-types.h: ... here.		2015-09-10 12:31:36 +01:00
..
agent.c	Remove required field in agent's symbols	2015-08-06 12:27:32 +01:00
agent.h
ax.def
break-common.h
btrace-common.c	btrace: fix case label in btrace_data_append	2015-07-21 13:50:44 +02:00
btrace-common.h	ari, btrace: avoid unsigned long long	2015-07-15 08:40:57 +02:00
buffer.c	Remove redundant include directives.	2015-06-24 13:52:29 +01:00
buffer.h
cleanups.c	Replace some xmalloc-family functions with XNEW-family ones	2015-08-26 17:18:12 -04:00
cleanups.h
common-debug.c
common-debug.h
common-defs.h	Move utility functions to common/	2015-06-15 17:04:56 +02:00
common-exceptions.c	Replace some xmalloc-family functions with XNEW-family ones	2015-08-26 17:18:12 -04:00
common-exceptions.h
common-regcache.h
common-types.h	Call target_can_download_tracepoint if there are tracepoints to download	2015-09-10 12:31:36 +01:00
common-utils.c	Move utility functions to common/	2015-06-15 17:04:56 +02:00
common-utils.h	Move utility functions to common/	2015-06-15 17:04:56 +02:00
common.host
common.m4	Revert the previous 7 commits of: Validate binary before use	2015-07-15 20:27:32 +02:00
create-version.sh
errors.c
errors.h
fileio.c	Don't assume File-I/O mode bits match the host's format	2015-06-09 13:24:46 +01:00
fileio.h	Don't assume File-I/O mode bits match the host's format	2015-06-09 13:24:46 +01:00
filestuff.c	Replace some xmalloc-family functions with XNEW-family ones	2015-08-26 17:18:12 -04:00
filestuff.h	Move make_cleanup_close to common code	2015-06-10 14:28:43 +01:00
format.c	Replace some xmalloc-family functions with XNEW-family ones	2015-08-26 17:18:12 -04:00
format.h
gdb_assert.h
gdb_locale.h
gdb_setjmp.h
gdb_signals.h
gdb_sys_time.h	Prepare for gnulib update	2015-08-24 18:50:55 +01:00
gdb_vecs.c
gdb_vecs.h
gdb_wait.h
host-defs.h	Move utility functions to common/	2015-06-15 17:04:56 +02:00
mingw-strerror.c
posix-strerror.c
print-utils.c	Remove redundant include directives.	2015-06-24 13:52:29 +01:00
print-utils.h
ptid.c
ptid.h
queue.h	Replace some xmalloc-family functions with XNEW-family ones	2015-08-26 17:18:12 -04:00
rsp-low.c	remote: consider addressable unit size when reading/writing memory	2015-06-18 13:12:39 -04:00
rsp-low.h	remote: consider addressable unit size when reading/writing memory	2015-06-18 13:12:39 -04:00
signals.c
symbol.h
vec.c
vec.h
version.h
x86-xstate.h
xml-utils.c
xml-utils.h