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Remove dependency on kallsyms for irq_to_desc (kernel 3.4+)
[lttng-modules.git]
/
lttng-events.c
diff --git
a/lttng-events.c
b/lttng-events.c
index 47431ca9360532d755083c38040ad1087c458188..3d0ef98464cfdfa0c2bec1040b8b52159fa0dcf6 100644
(file)
--- a/
lttng-events.c
+++ b/
lttng-events.c
@@
-56,6
+56,7
@@
#include <wrapper/vzalloc.h>
#include <wrapper/ringbuffer/backend.h>
#include <wrapper/ringbuffer/frontend.h>
#include <wrapper/vzalloc.h>
#include <wrapper/ringbuffer/backend.h>
#include <wrapper/ringbuffer/frontend.h>
+#include <wrapper/time.h>
#define METADATA_CACHE_DEFAULT_SIZE 4096
#define METADATA_CACHE_DEFAULT_SIZE 4096
@@
-89,7
+90,12
@@
int _lttng_field_statedump(struct lttng_session *session,
void synchronize_trace(void)
{
void synchronize_trace(void)
{
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0))
+ synchronize_rcu();
+#else
synchronize_sched();
synchronize_sched();
+#endif
+
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
#ifdef CONFIG_PREEMPT_RT_FULL
synchronize_rcu();
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,4,0))
#ifdef CONFIG_PREEMPT_RT_FULL
synchronize_rcu();
@@
-1117,8
+1123,8
@@
int lttng_session_list_tracker_pids(struct lttng_session *session)
ret = PTR_ERR(tracker_pids_list_file);
goto file_error;
}
ret = PTR_ERR(tracker_pids_list_file);
goto file_error;
}
- if (
atomic_long_add_unless(&session->file->f_count,
- 1, INT_MAX) == INT_MAX) {
+ if (
!atomic_long_add_unless(&session->file->f_count, 1, LONG_MAX)) {
+ ret = -EOVERFLOW;
goto refcount_error;
}
ret = lttng_tracker_pids_list_fops.open(NULL, tracker_pids_list_file);
goto refcount_error;
}
ret = lttng_tracker_pids_list_fops.open(NULL, tracker_pids_list_file);
@@
-2410,6
+2416,9
@@
int _lttng_event_header_declare(struct lttng_session *session)
* in future versions.
* This function may return a negative offset. It may happen if the
* system sets the REALTIME clock to 0 after boot.
* in future versions.
* This function may return a negative offset. It may happen if the
* system sets the REALTIME clock to 0 after boot.
+ *
+ * Use 64bit timespec on kernels that have it, this makes 32bit arch
+ * y2038 compliant.
*/
static
int64_t measure_clock_offset(void)
*/
static
int64_t measure_clock_offset(void)
@@
-2417,13
+2426,21
@@
int64_t measure_clock_offset(void)
uint64_t monotonic_avg, monotonic[2], realtime;
uint64_t tcf = trace_clock_freq();
int64_t offset;
uint64_t monotonic_avg, monotonic[2], realtime;
uint64_t tcf = trace_clock_freq();
int64_t offset;
- struct timespec rts = { 0, 0 };
unsigned long flags;
unsigned long flags;
+#ifdef LTTNG_KERNEL_HAS_TIMESPEC64
+ struct timespec64 rts = { 0, 0 };
+#else
+ struct timespec rts = { 0, 0 };
+#endif
/* Disable interrupts to increase correlation precision. */
local_irq_save(flags);
monotonic[0] = trace_clock_read64();
/* Disable interrupts to increase correlation precision. */
local_irq_save(flags);
monotonic[0] = trace_clock_read64();
+#ifdef LTTNG_KERNEL_HAS_TIMESPEC64
+ ktime_get_real_ts64(&rts);
+#else
getnstimeofday(&rts);
getnstimeofday(&rts);
+#endif
monotonic[1] = trace_clock_read64();
local_irq_restore(flags);
monotonic[1] = trace_clock_read64();
local_irq_restore(flags);
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