Messages in this thread |  | | Date | Wed, 18 Apr 2018 09:53:22 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH v2] tracing/x86: Update syscall trace events to handle new x86 syscall func names |
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Em Tue, Apr 17, 2018 at 05:41:28PM -0400, Steven Rostedt escreveu: > On Tue, 17 Apr 2018 15:13:04 -0300 Arnaldo Carvalho de Melo <acme@kernel.org> wrote: > > 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)
> It doesn't have to do with the number of parameters, not everything > has "__x64" on it.
> Try this patch:
Trying...
> diff --git a/arch/x86/include/asm/ftrace.h b/arch/x86/include/asm/ftrace.h > index 09ad88572746..15582648887f 100644 > --- a/arch/x86/include/asm/ftrace.h > +++ b/arch/x86/include/asm/ftrace.h > @@ -31,6 +31,19 @@ static inline unsigned long ftrace_call_adjust(unsigned long addr) > return addr; > } > > +#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", "__ia32_sys" or simple "sys" prefix. > + */ > + return !strcmp(sym + 3, name + 3) || > + (!strncmp(sym, "__x64_", 6) && !strcmp(sym + 9, name + 3)) || > + (!strncmp(sym, "__ia32_", 7) && !strcmp(sym + 10, name + 3)); > + > +} > + > #ifdef CONFIG_DYNAMIC_FTRACE > > struct dyn_arch_ftrace {
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