On Tue, 17 Apr 2018 15:13:04 -0300
Arnaldo Carvalho de Melo <[email protected]> wrote:
> Em Tue, Apr 17, 2018 at 03:04:30PM -0300, Arnaldo Carvalho de Melo escreveu:
> > Em Tue, Apr 17, 2018 at 07:22:36PM +0200, Dominik Brodowski escreveu:
> > > > Added back original compare to not miss 32bit kernel syscalls
> > >
> > > s/32bit/32bit and 0-parameter syscalls.
> >
> > So this should have covered 0-parameter syscalls, ok, I'm double
> > checking that the last patch is the one I have running... Because
> > 0-parameter syscalls are not working for me, i.e. no
> > syscalls:sys_enter_getppid, for instance.
>
> Yeah, failing:
>
> [root@jouet ~]# strace -e openat -e file perf test -F -v "mmap interface" |&
> grep syscalls
> openat(AT_FDCWD,
> "/sys/kernel/debug/tracing/events/syscalls/sys_enter_getsid/format",
> O_RDONLY) = 3
> openat(AT_FDCWD,
> "/sys/kernel/debug/tracing/events/syscalls/sys_enter_getppid/format",
> O_RDONLY) = -1 ENOENT (No such file or directory)
> [root@jouet ~]#
>
> [root@jouet ~]# ls -la
> /sys/kernel/debug/tracing/events/syscalls/sys_enter_getppid/format
> ls: cannot access
> '/sys/kernel/debug/tracing/events/syscalls/sys_enter_getppid/format': No such
> file or directory
> [root@jouet ~]#
>
> With:
>
> +#define ARCH_HAS_SYSCALL_MATCH_SYM_NAME
> +static inline bool arch_syscall_match_sym_name(const char *sym, const char
> *name)
> +{
> + /*
> + * Compare the symbol name with the system call name. Skip the
> + * "__x64_sys" prefix.
> + */
> + return !strcmp(sym + 9, name + 3) || !strcmp(sym + 3, name + 3);
> +}
>
> in place.
>
Yeah, I did a test too, and found that I'm missing sys_clock_nanosleep.
I'm looking into it.
-- Steve
