Drop support for kernels < 4.4 from 'wrapper/tracepoint.h'

[lttng-modules.git] / src / lttng-statedump-impl.c

diff --git a/src/lttng-statedump-impl.c b/src/lttng-statedump-impl.c
index c5fca89df8fa2bc83d0c67467d420c093060254f..0593f4c8bd22ee3e6fbd62f2535ba08a4e97eff0 100644 (file)
--- a/src/lttng-statedump-impl.c
+++ b/src/lttng-statedump-impl.c
@@ -22,6 +22,7 @@
 #include <linux/proc_fs.h>
 #include <linux/file.h>
 #include <linux/interrupt.h>
+#include <linux/irq.h>
 #include <linux/irqnr.h>
 #include <linux/netdevice.h>
 #include <linux/inetdevice.h>
@@ -38,18 +39,11 @@
 #include <wrapper/cpu.h>
 #include <wrapper/irqdesc.h>
 #include <wrapper/fdtable.h>
-#include <wrapper/namespace.h>
-#include <wrapper/irq.h>
 #include <wrapper/tracepoint.h>
-#include <wrapper/genhd.h>
-#include <wrapper/file.h>
+#include <wrapper/blkdev.h>
 #include <wrapper/fdtable.h>
 #include <wrapper/sched.h>
 
-#ifdef CONFIG_LTTNG_HAS_LIST_IRQ
-#include <linux/irq.h>
-#endif
-
 /* Define the tracepoints, but do not build the probes */
 #define CREATE_TRACE_POINTS
 #define TRACE_INCLUDE_PATH instrumentation/events
@@ -197,7 +191,29 @@ enum lttng_process_status {
 };
 
 
-#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,11,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(6,0,0))
+
+#define LTTNG_PART_STRUCT_TYPE struct block_device
+
+static
+int lttng_get_part_name(struct gendisk *disk, struct block_device *part, char *name_buf)
+{
+       int ret;
+
+       ret = snprintf(name_buf, BDEVNAME_SIZE, "%pg", part);
+       if (ret < 0 || ret >= BDEVNAME_SIZE)
+               return -ENOSYS;
+
+       return 0;
+}
+
+static
+dev_t lttng_get_part_devt(struct block_device *part)
+{
+       return part->bd_dev;
+}
+
+#elif (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(5,11,0))
 
 #define LTTNG_PART_STRUCT_TYPE struct block_device
 
@@ -334,7 +350,7 @@ int lttng_enumerate_block_devices(struct lttng_kernel_session *session)
                 * suppressed
                 */
                if (get_capacity(disk) == 0 ||
-                   (disk->flags & GENHD_FL_SUPPRESS_PARTITION_INFO))
+                   (disk->flags & LTTNG_GENHD_FL_HIDDEN))
                        continue;
 
                ret = lttng_statedump_each_block_device(session, disk);
@@ -412,7 +428,7 @@ int lttng_dump_one_fd(const void *p, struct file *file, unsigned int fd)
         * the lock is taken, but we are not aware whether this is
         * guaranteed or not, so play safe.
         */
-       if (fd < fdt->max_fds && lttng_close_on_exec(fd, fdt))
+       if (fd < fdt->max_fds && close_on_exec(fd, fdt))
                flags |= O_CLOEXEC;
        if (IS_ERR(s)) {
                struct dentry *dentry = file->f_path.dentry;
@@ -439,7 +455,7 @@ void lttng_enumerate_files(struct lttng_kernel_session *session,
 {
        struct lttng_fd_ctx ctx = { .page = tmp, .session = session, .files = files, };
 
-       lttng_iterate_fd(files, 0, lttng_dump_one_fd, &ctx);
+       iterate_fd(files, 0, lttng_dump_one_fd, &ctx);
 }
 
 #ifdef LTTNG_HAVE_STATEDUMP_CPU_TOPOLOGY
@@ -488,7 +504,7 @@ void lttng_enumerate_task_vm_maps(struct lttng_kernel_session *session,
                down_read(&mm->mmap_sem);
                while (map) {
                        if (map->vm_file)
-                               ino = map->vm_file->lttng_f_dentry->d_inode->i_ino;
+                               ino = map->vm_file->f_path.dentry->d_inode->i_ino;
                        else
                                ino = 0;
                        trace_lttng_statedump_vm_map(session, p, map, ino);
@@ -512,8 +528,6 @@ int lttng_enumerate_vm_maps(struct lttng_kernel_session *session)
 }
 #endif
 
-#ifdef CONFIG_LTTNG_HAS_LIST_IRQ
-
 static
 int lttng_list_interrupts(struct lttng_kernel_session *session)
 {
@@ -540,13 +554,6 @@ int lttng_list_interrupts(struct lttng_kernel_session *session)
        return 0;
 #undef irq_to_desc
 }
-#else
-static inline
-int lttng_list_interrupts(struct lttng_kernel_session *session)
-{
-       return 0;
-}
-#endif
 
 /*
  * Statedump the task's namespaces using the proc filesystem inode number as
@@ -591,7 +598,7 @@ void lttng_statedump_process_ns(struct lttng_kernel_session *session,
                 * paranoid behavior of
                 * trace_lttng_statedump_process_user_ns().
                 */
-               user_ns = user_ns ? user_ns->lttng_user_ns_parent : NULL;
+               user_ns = user_ns ? user_ns->parent : NULL;
        } while (user_ns);
 
        /*
@@ -798,13 +805,6 @@ EXPORT_SYMBOL_GPL(lttng_statedump_start);
 static
 int __init lttng_statedump_init(void)
 {
-       /*
-        * Allow module to load even if the fixup cannot be done. This
-        * will allow seemless transition when the underlying issue fix
-        * is merged into the Linux kernel, and when tracepoint.c
-        * "tracepoint_module_notify" is turned into a static function.
-        */
-       (void) wrapper_lttng_fixup_sig(THIS_MODULE);
        return 0;
 }