Re: [PATCH 6/7] implement utrace-ptrace
On Mon, Dec 21, 2009 at 07:18:37PM +0530, Ananth N Mavinakayanahalli wrote: On Fri, Dec 18, 2009 at 02:11:40AM +0100, Oleg Nesterov wrote: The patch adds the new file, kernel/ptrace-utrace.c, which contains the new implementation of ptrace over utrace. This file is not compiled until we have CONFIG_UTRACE option, will be added by the next utrace core patch. It's supposed to be an invisible implementation change, nothing should change to userland when CONFIG_UTRACE is enabled. Signed-off-by: Roland McGrath rol...@redhat.com Signed-off-by: Oleg Nesterov o...@redhat.com --- Oleg, ptrace/utrace performs better with the ptrace-tests [1] testsuite (1 failure vs. 3 with vanilla ptrace [1]). The gdb testsuite also has no regressions. In fact, the results on the gdb testsuite are identical. Forgot to mention the tests were on powerpc.
Re: [PATCH 6/7] implement utrace-ptrace
On Fri, Dec 18, 2009 at 02:11:40AM +0100, Oleg Nesterov wrote: The patch adds the new file, kernel/ptrace-utrace.c, which contains the new implementation of ptrace over utrace. This file is not compiled until we have CONFIG_UTRACE option, will be added by the next utrace core patch. It's supposed to be an invisible implementation change, nothing should change to userland when CONFIG_UTRACE is enabled. Signed-off-by: Roland McGrath rol...@redhat.com Signed-off-by: Oleg Nesterov o...@redhat.com --- Oleg, ptrace/utrace performs better with the ptrace-tests [1] testsuite (1 failure vs. 3 with vanilla ptrace [1]). The gdb testsuite also has no regressions. In fact, the results on the gdb testsuite are identical. Ananth [1] http://sourceware.org/systemtap/wiki/utrace/tests [2] detach-stopped and stopped-attach-transparency are the additional failures. syscall-reset fails in both cases.
