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Fix: preemptible and migratable context error handling
[lttng-modules.git]
/
lttng-syscalls.c
diff --git
a/lttng-syscalls.c
b/lttng-syscalls.c
index f4e05b080f5de3356b4f3f8ce7bfd59f486ef34a..a3149d0d01caa4260bc2e0442907207f4f4aac4b 100644
(file)
--- a/
lttng-syscalls.c
+++ b/
lttng-syscalls.c
@@
-46,6
+46,11
@@
# endif
#endif
# endif
#endif
+/* in_compat_syscall appears in kernel 4.6. */
+#ifndef in_compat_syscall
+ #define in_compat_syscall() is_compat_task()
+#endif
+
enum sc_type {
SC_TYPE_ENTRY,
SC_TYPE_EXIT,
enum sc_type {
SC_TYPE_ENTRY,
SC_TYPE_EXIT,
@@
-355,7
+360,7
@@
static void syscall_entry_unknown(struct lttng_event *event,
unsigned long args[UNKNOWN_SYSCALL_NRARGS];
syscall_get_arguments(current, regs, 0, UNKNOWN_SYSCALL_NRARGS, args);
unsigned long args[UNKNOWN_SYSCALL_NRARGS];
syscall_get_arguments(current, regs, 0, UNKNOWN_SYSCALL_NRARGS, args);
- if (unlikely(i
s_compat_task
()))
+ if (unlikely(i
n_compat_syscall
()))
__event_probe__compat_syscall_entry_unknown(event, id, args);
else
__event_probe__syscall_entry_unknown(event, id, args);
__event_probe__compat_syscall_entry_unknown(event, id, args);
else
__event_probe__syscall_entry_unknown(event, id, args);
@@
-368,7
+373,7
@@
void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
const struct trace_syscall_entry *table, *entry;
size_t table_len;
const struct trace_syscall_entry *table, *entry;
size_t table_len;
- if (unlikely(i
s_compat_task
())) {
+ if (unlikely(i
n_compat_syscall
())) {
struct lttng_syscall_filter *filter;
filter = lttng_rcu_dereference(chan->sc_filter);
struct lttng_syscall_filter *filter;
filter = lttng_rcu_dereference(chan->sc_filter);
@@
-401,7
+406,7
@@
void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
syscall_entry_unknown(unknown_event, regs, id);
return;
}
syscall_entry_unknown(unknown_event, regs, id);
return;
}
- if (unlikely(i
s_compat_task
()))
+ if (unlikely(i
n_compat_syscall
()))
event = chan->compat_sc_table[id];
else
event = chan->sc_table[id];
event = chan->compat_sc_table[id];
else
event = chan->sc_table[id];
@@
-506,7
+511,7
@@
static void syscall_exit_unknown(struct lttng_event *event,
unsigned long args[UNKNOWN_SYSCALL_NRARGS];
syscall_get_arguments(current, regs, 0, UNKNOWN_SYSCALL_NRARGS, args);
unsigned long args[UNKNOWN_SYSCALL_NRARGS];
syscall_get_arguments(current, regs, 0, UNKNOWN_SYSCALL_NRARGS, args);
- if (unlikely(i
s_compat_task
()))
+ if (unlikely(i
n_compat_syscall
()))
__event_probe__compat_syscall_exit_unknown(event, id, ret,
args);
else
__event_probe__compat_syscall_exit_unknown(event, id, ret,
args);
else
@@
-522,7
+527,7
@@
void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
long id;
id = syscall_get_nr(current, regs);
long id;
id = syscall_get_nr(current, regs);
- if (unlikely(i
s_compat_task
())) {
+ if (unlikely(i
n_compat_syscall
())) {
struct lttng_syscall_filter *filter;
filter = lttng_rcu_dereference(chan->sc_filter);
struct lttng_syscall_filter *filter;
filter = lttng_rcu_dereference(chan->sc_filter);
@@
-555,7
+560,7
@@
void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
syscall_exit_unknown(unknown_event, regs, id, ret);
return;
}
syscall_exit_unknown(unknown_event, regs, id, ret);
return;
}
- if (unlikely(i
s_compat_task
()))
+ if (unlikely(i
n_compat_syscall
()))
event = chan->compat_sc_exit_table[id];
else
event = chan->sc_exit_table[id];
event = chan->compat_sc_exit_table[id];
else
event = chan->sc_exit_table[id];
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