diff options
Diffstat (limited to 'kernel/trace/trace_syscalls.c')
| -rw-r--r-- | kernel/trace/trace_syscalls.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c index 41b6dd9..9189cbe 100644 --- a/kernel/trace/trace_syscalls.c +++ b/kernel/trace/trace_syscalls.c @@ -481,8 +481,8 @@ static void prof_syscall_enter(struct pt_regs *regs, long id) unsigned long flags; char *trace_buf; char *raw_data; - int *recursion; int syscall_nr; + int rctx; int size; int cpu; @@ -506,7 +506,8 @@ static void prof_syscall_enter(struct pt_regs *regs, long id) /* Protect the per cpu buffer, begin the rcu read side */ local_irq_save(flags); - if (perf_swevent_get_recursion_context(&recursion)) + rctx = perf_swevent_get_recursion_context(); + if (rctx < 0) goto end_recursion; cpu = smp_processor_id(); @@ -530,7 +531,7 @@ static void prof_syscall_enter(struct pt_regs *regs, long id) perf_tp_event(sys_data->enter_id, 0, 1, rec, size); end: - perf_swevent_put_recursion_context(recursion); + perf_swevent_put_recursion_context(rctx); end_recursion: local_irq_restore(flags); } @@ -582,7 +583,7 @@ static void prof_syscall_exit(struct pt_regs *regs, long ret) int syscall_nr; char *trace_buf; char *raw_data; - int *recursion; + int rctx; int size; int cpu; @@ -609,7 +610,8 @@ static void prof_syscall_exit(struct pt_regs *regs, long ret) /* Protect the per cpu buffer, begin the rcu read side */ local_irq_save(flags); - if (perf_swevent_get_recursion_context(&recursion)) + rctx = perf_swevent_get_recursion_context(); + if (rctx < 0) goto end_recursion; cpu = smp_processor_id(); @@ -634,7 +636,7 @@ static void prof_syscall_exit(struct pt_regs *regs, long ret) perf_tp_event(sys_data->exit_id, 0, 1, rec, size); end: - perf_swevent_put_recursion_context(recursion); + perf_swevent_put_recursion_context(rctx); end_recursion: local_irq_restore(flags); } |