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authorIngo Molnar <mingo@elte.hu>2009-08-18 10:41:57 +0200
committerIngo Molnar <mingo@elte.hu>2009-08-19 14:16:15 +0200
commit5e9ad7df9fd056f1071af8aa91034a1c3170257d (patch)
tree2f5a2de49bbbdba1b75502a554caecf025ed35a8 /arch/s390/kernel
parent3be04b471b95b870bd129a138463756629e86f3f (diff)
[S390] ftrace: update system call tracer support
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>
Diffstat (limited to 'arch/s390/kernel')
-rw-r--r--arch/s390/kernel/ptrace.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index 43acd73105b..c5e87d891ca 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -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);