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.
- Arnaldo
