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| author | Patrick Mochel <mochel@osdl.org> | 2003-06-15 19:02:19 -0700 |
|---|---|---|
| committer | Patrick Mochel <mochel@osdl.org> | 2003-06-15 19:02:19 -0700 |
| commit | 4d7fcae96cab59f57b4a8460fa784d85acc67f72 (patch) | |
| tree | 6f69837df52d2129a5b59d7a7fda611eefa2d8f8 /lib | |
| parent | eaaaa30438086b33825ea63748d98a3714201b90 (diff) | |
| download | history-4d7fcae96cab59f57b4a8460fa784d85acc67f72.tar.gz | |
[kobject] Add sequence number to kobject hotplug.
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/kobject.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/kobject.c b/lib/kobject.c index e2378597b989ca..fb49131f5ff98e 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -100,6 +100,9 @@ static void fill_kobj_path(struct kset *kset, struct kobject *kobj, char *path, #define BUFFER_SIZE 1024 /* should be enough memory for the env */ #define NUM_ENVP 32 /* number of env pointers */ +static unsigned long sequence_num; +static spinlock_t sequence_lock = SPIN_LOCK_UNLOCKED; + static void kset_hotplug(const char *action, struct kset *kset, struct kobject *kobj) { @@ -112,6 +115,7 @@ static void kset_hotplug(const char *action, struct kset *kset, int kobj_path_length; char *kobj_path = NULL; char *name = NULL; + unsigned long seq; /* If the kset has a filter operation, call it. If it returns failure, no hotplug event is required. */ @@ -152,6 +156,13 @@ static void kset_hotplug(const char *action, struct kset *kset, envp [i++] = scratch; scratch += sprintf(scratch, "ACTION=%s", action) + 1; + spin_lock(&sequence_lock); + seq = sequence_num++; + spin_unlock(&sequence_lock); + + envp [i++] = scratch; + scratch += sprintf(scratch, "SEQNUM=%ld", seq) + 1; + kobj_path_length = get_kobj_path_length (kset, kobj); kobj_path = kmalloc (kobj_path_length, GFP_KERNEL); if (!kobj_path) |