On Thu, 13 Jun 2013, Tommi Rantala wrote: > Unable to opendir /sys/bus/event_source/devices : Resource temporarily > unavailable > [221186.493638] traps: trinity-child30[375] trap divide error > ip:40dbae sp:7fff3c1d7ae0 error:0 in trinity[400000+28000]
The below patch should fix this problem. Though in the case where /sys/bus/event_source/devices isn't available trinity will try opening it again each time it tries to do a PERF_TYPE_READ_FROM_SYSFS type (1 time in 7). Not sure if it's worth rate-limiting that. Signed-off-by: Vince Weaver <[email protected]> diff --git a/syscalls/perf_event_open.c b/syscalls/perf_event_open.c index 32c11cf..11f49e8 100644 --- a/syscalls/perf_event_open.c +++ b/syscalls/perf_event_open.c @@ -406,6 +406,14 @@ static long long random_sysfs_config(__u32 *type, __u64 *config1) { int i,j; long long c=0,c1=0; + if (num_pmus==0) { + /* For some reason we didn't get initialized */ + /* Fake it so we don't divide by zero */ + *type=rand32(); + *config1=rand64(); + return rand64(); + } + i=rand()%num_pmus; *type=pmus[i].type; -- To unsubscribe from this list: send the line "unsubscribe trinity" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
