From: Borislav Petkov <borislav.pet...@amd.com> Hi all,
off and on I get some free time to work on that, here's the latest incarnation. It contains review feedback from the earlier round. Patch 1/4 adds a trace_add_file() interface which adds an additional file to debugfs, in this case the "persistent" file which contains the normal perf file descriptor sys_perf_event_open gives to the perf tool. IOW, one gets: /mnt/dbg/tracing/events/mce/mce_record/ |-- enable |-- filter |-- format |-- id `-- persistent1 0 directories, 5 files [ 1 is the CPU number so sticking all per-CPU descriptors in this directory could get a little cluttered and ugly so I'll have to think about that a bit more. ] 3/4 is the meat which adds <kernel/events/persistent.c> and 4/4 shows how one can init a persistent event on a CPU. What remains is adding code which can enable events on boot from the kernel cmdline and more testing. As always, comments and suggestions are appreciated. Thanks. Borislav Petkov (4): trace events: Interface to add files to debugfs perf: Add persistent events perf: Add persistent event facilities persistent test arch/x86/include/asm/mce.h | 1 + arch/x86/kernel/cpu/mcheck/mce.c | 5 ++ include/linux/ftrace_event.h | 3 + include/linux/perf_event.h | 24 +++++- kernel/events/Makefile | 2 +- kernel/events/core.c | 18 +++-- kernel/events/internal.h | 2 + kernel/events/persistent.c | 168 +++++++++++++++++++++++++++++++++++++++ kernel/trace/trace.c | 4 + kernel/trace/trace.h | 1 + kernel/trace/trace_events.c | 35 ++++++++ 11 files changed, 254 insertions(+), 9 deletions(-) create mode 100644 kernel/events/persistent.c -- 1.7.11.rc1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
