On Mon, 14 Dec 2020 16:28:04 +0000 Jessica Clarke <jrt...@jrtc27.com> wrote:
> On Mon, Dec 14, 2020 at 11:15:12AM -0500, Steven Rostedt wrote: > > On Mon, 14 Dec 2020 18:59:02 +0300 > > Anatoly Pugachev <mator...@gmail.com> wrote: > > > > > Hello! > > > > > > Enabled ftrace startup tests on a sparc64 test VM/LDOM: > > > > > > $ diff -u <(gzip -dc ~/dmesg/config-5.10.0.gz) <(gzip -dc /proc/config.gz) > > > --- /dev/fd/63 2020-12-14 16:19:38.239372599 +0300 > > > +++ /dev/fd/62 2020-12-14 16:19:38.235372433 +0300 > > > @@ -2842,7 +2842,10 @@ > > > # CONFIG_TRACEPOINT_BENCHMARK is not set > > > # CONFIG_RING_BUFFER_BENCHMARK is not set > > > # CONFIG_TRACE_EVAL_MAP_FILE is not set > > > -# CONFIG_FTRACE_STARTUP_TEST is not set > > > +CONFIG_FTRACE_SELFTEST=y > > > +CONFIG_FTRACE_STARTUP_TEST=y > > > +CONFIG_EVENT_TRACE_STARTUP_TEST=y > > > +# CONFIG_EVENT_TRACE_TEST_SYSCALLS is not set > > > # CONFIG_RING_BUFFER_STARTUP_TEST is not set > > > # CONFIG_PREEMPTIRQ_DELAY_TEST is not set > > > # CONFIG_KPROBE_EVENT_GEN_TEST is not set > > > > > > > > > Got the following results with kernel boot logs: > > > > > > Dec 14 13:48:15 kernel: clocksource: jiffies: mask: 0xffffffff > > > max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns > > > Dec 14 13:48:15 kernel: futex hash table entries: 65536 (order: 9, > > > 4194304 bytes, linear) > > > Dec 14 13:48:15 kernel: Running postponed tracer tests: > > > Dec 14 13:48:15 kernel: Testing tracer function: > > > Dec 14 13:48:15 kernel: Kernel unaligned access at TPC[552a20] > > > trace_function+0x40/0x140 > > > Dec 14 13:48:15 kernel: Kernel unaligned access at TPC[552a24] > > > trace_function+0x44/0x140 > > > Dec 14 13:48:15 kernel: Kernel unaligned access at TPC[552a20] > > > trace_function+0x40/0x140 > > > Dec 14 13:48:15 kernel: Kernel unaligned access at TPC[552a24] > > > trace_function+0x44/0x140 > > > Dec 14 13:48:15 kernel: Kernel unaligned access at TPC[552a20] > > > trace_function+0x40/0x140 > > > > Does sparc64 require 8 byte alignment for 8 byte words? > > Yes, SPARC requires natural alignment for all primitive types (and that > even includes 8-byte alignment for 8-byte types on 32-bit SPARC as it > has load/store pair instructions the compiler is free to use). > > OK, that means I was misinformed about reverting the patch that forced alignment (and the patch I posted in reply to my email, is the revert of the revert). If the patch I just posted works, then I'll get it ready for mainline and stable. Thanks! -- Steve
