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[S390] ftrace: update system call tracer support

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Commit fb34a08c3 ("tracing: Add trace events for each syscall
entry/exit") changed the lowlevel API to ftrace syscall tracing
but did not update s390 which started making use of it recently.

This broke the s390 build, as reported by Paul Mundt.

Update the callbacks with the syscall number and the syscall
return code values. This allows per syscall tracepoints,
syscall argument enumeration /debug/tracing/events/syscalls/
and perfcounters support and integration on s390 too.

Reported-by: Paul Mundt <lethal@linux-sh.org>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <tip-fb34a08c3469b2be9eae626ccb96476b4687b810@git.kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2009-08-18 10:41:57 +02:00
parent 3be04b471b
commit 5e9ad7df9f
1 changed files with 5 additions and 2 deletions
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7
arch/s390/kernel/ptrace.c
View file

@ -51,6 +51,9 @@
#include "compat_ptrace.h"
#endif
DEFINE_TRACE(syscall_enter);
DEFINE_TRACE(syscall_exit);
enum s390_regset {
REGSET_GENERAL,
REGSET_FP,
@ -662,7 +665,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
}
if (unlikely(test_thread_flag(TIF_SYSCALL_FTRACE)))
ftrace_syscall_enter(regs);
trace_syscall_enter(regs, regs->gprs[2]);
if (unlikely(current->audit_context))
audit_syscall_entry(is_compat_task() ?
@ -680,7 +683,7 @@ asmlinkage void do_syscall_trace_exit(struct pt_regs *regs)
regs->gprs[2]);
if (unlikely(test_thread_flag(TIF_SYSCALL_FTRACE)))
ftrace_syscall_exit(regs);
trace_syscall_exit(regs, regs->gprs[2]);
if (test_thread_flag(TIF_SYSCALL_TRACE))
tracehook_report_syscall_exit(regs, 0);