diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | buildrun.cxx | 2 | ||||
| -rw-r--r-- | runtime/ChangeLog | 4 | ||||
| -rw-r--r-- | runtime/autoconf-synchronize-sched.c | 6 | ||||
| -rw-r--r-- | translate.cxx | 6 |
5 files changed, 24 insertions, 0 deletions
@@ -1,3 +1,9 @@ +2008-11-26 Frank Ch. Eigler <fche@elastic.org> + + * translate.cxx (emit_module_exit): Call synchronize_sched during + module shutdown if it's available. + * buildrun.cxx (compile_pass): Test for it. + 2008-11-25 Frank Ch. Eigler <fche@elastic.org> PR 7046. diff --git a/buildrun.cxx b/buildrun.cxx index c23a4747..9eeab4ba 100644 --- a/buildrun.cxx +++ b/buildrun.cxx @@ -112,6 +112,8 @@ compile_pass (systemtap_session& s) o << module_cflags << " += $(call stap_check_build, $(SYSTEMTAP_RUNTIME)/autoconf-uaccess.c, -DSTAPCONF_LINUX_UACCESS_H,)" << endl; o << module_cflags << " += $(call stap_check_build, $(SYSTEMTAP_RUNTIME)/autoconf-oneachcpu-retry.c, -DSTAPCONF_ONEACHCPU_RETRY,)" << endl; o << module_cflags << " += $(call stap_check_build, $(SYSTEMTAP_RUNTIME)/autoconf-dpath-path.c, -DSTAPCONF_DPATH_PATH,)" << endl; + o << module_cflags << " += $(call stap_check_build, $(SYSTEMTAP_RUNTIME)/autoconf-synchronize-sched.c, -DSTAPCONF_SYNCHRONIZE_SCHED,)" << endl; + #if 0 /* NB: For now, the performance hit of probe_kernel_read/write (vs. our * homegrown safe-access functions) is deemed undesireable, so we'll skip diff --git a/runtime/ChangeLog b/runtime/ChangeLog index 91a932c4..f3c5f2e3 100644 --- a/runtime/ChangeLog +++ b/runtime/ChangeLog @@ -1,3 +1,7 @@ +2008-11-26 Frank Ch. Eigler <fche@elastic.org> + + * autoconf-synchronize-sched.c: New file. + 2008-11-25 Frank Ch. Eigler <fche@elastic.org> PR 7046. diff --git a/runtime/autoconf-synchronize-sched.c b/runtime/autoconf-synchronize-sched.c new file mode 100644 index 00000000..0291092e --- /dev/null +++ b/runtime/autoconf-synchronize-sched.c @@ -0,0 +1,6 @@ +#include <linux/sched.h> + +void foo (void) +{ + synchronize_sched (); +} diff --git a/translate.cxx b/translate.cxx index 1cf7361e..41a424ed 100644 --- a/translate.cxx +++ b/translate.cxx @@ -1287,6 +1287,11 @@ c_unparser::emit_module_exit () o->newline () << "yield ();"; // aka schedule() and then some o->newline(-2) << "} while (holdon);"; + // + o->newline() << "#ifdef STAPCONF_SYNCHRONIZE_SCHED"; + o->newline() << "synchronize_sched();"; + o->newline() << "#endif"; + // XXX: might like to have an escape hatch, in case some probe is // genuinely stuck somehow @@ -4860,6 +4865,7 @@ translate_pass (systemtap_session& s) s.op->newline() << "#include \"stat.c\""; s.op->newline() << "#include <linux/string.h>"; s.op->newline() << "#include <linux/timer.h>"; + s.op->newline() << "#include <linux/sched.h>"; s.op->newline() << "#include <linux/delay.h>"; s.op->newline() << "#include <linux/profile.h>"; s.op->newline() << "#include <linux/random.h>"; |