diff options
author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2010-06-30 12:16:24 +0200 |
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committer | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2010-07-26 14:27:25 +0200 |
commit | 2dcf78c0eeae3bd07082821557014f25f02ca2e9 (patch) | |
tree | 8ca5c4c7f35c9a9ab07fcd9732124c905e609aa1 /kernel/tracepoint.c | |
parent | 6b6322676add0fa2713d0ec89a28390fd4d907f5 (diff) | |
parent | 5109a4597f7e758b8d20694392d0361a0b4c43b1 (diff) |
Merge branch 'imx/for-2.6.36' of git://git.pengutronix.de/git/ukl/linux-2.6 into HEAD
There are some more conflicts than detected by git, namely support for
the newly added cpuimx machines needed to be converted to dynamic device
registration.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Conflicts:
arch/arm/mach-imx/Makefile
arch/arm/mach-imx/devices.c
arch/arm/mach-imx/devices.h
arch/arm/mach-imx/eukrea_mbimx27-baseboard.c
arch/arm/mach-mx2/Kconfig
arch/arm/mach-mx25/Makefile
arch/arm/mach-mx25/devices.c
arch/arm/plat-mxc/include/mach/mx25.h
arch/arm/plat-mxc/include/mach/mxc_nand.h
Diffstat (limited to 'kernel/tracepoint.c')
-rw-r--r-- | kernel/tracepoint.c | 91 |
1 files changed, 51 insertions, 40 deletions
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c index cc89be5bc0f..c77f3eceea2 100644 --- a/kernel/tracepoint.c +++ b/kernel/tracepoint.c @@ -54,7 +54,7 @@ static struct hlist_head tracepoint_table[TRACEPOINT_TABLE_SIZE]; */ struct tracepoint_entry { struct hlist_node hlist; - void **funcs; + struct tracepoint_func *funcs; int refcount; /* Number of times armed. 0 if disarmed. */ char name[0]; }; @@ -64,12 +64,12 @@ struct tp_probes { struct rcu_head rcu; struct list_head list; } u; - void *probes[0]; + struct tracepoint_func probes[0]; }; static inline void *allocate_probes(int count) { - struct tp_probes *p = kmalloc(count * sizeof(void *) + struct tp_probes *p = kmalloc(count * sizeof(struct tracepoint_func) + sizeof(struct tp_probes), GFP_KERNEL); return p == NULL ? NULL : p->probes; } @@ -79,7 +79,7 @@ static void rcu_free_old_probes(struct rcu_head *head) kfree(container_of(head, struct tp_probes, u.rcu)); } -static inline void release_probes(void *old) +static inline void release_probes(struct tracepoint_func *old) { if (old) { struct tp_probes *tp_probes = container_of(old, @@ -95,15 +95,16 @@ static void debug_print_probes(struct tracepoint_entry *entry) if (!tracepoint_debug || !entry->funcs) return; - for (i = 0; entry->funcs[i]; i++) - printk(KERN_DEBUG "Probe %d : %p\n", i, entry->funcs[i]); + for (i = 0; entry->funcs[i].func; i++) + printk(KERN_DEBUG "Probe %d : %p\n", i, entry->funcs[i].func); } -static void * -tracepoint_entry_add_probe(struct tracepoint_entry *entry, void *probe) +static struct tracepoint_func * +tracepoint_entry_add_probe(struct tracepoint_entry *entry, + void *probe, void *data) { int nr_probes = 0; - void **old, **new; + struct tracepoint_func *old, *new; WARN_ON(!probe); @@ -111,8 +112,9 @@ tracepoint_entry_add_probe(struct tracepoint_entry *entry, void *probe) old = entry->funcs; if (old) { /* (N -> N+1), (N != 0, 1) probes */ - for (nr_probes = 0; old[nr_probes]; nr_probes++) - if (old[nr_probes] == probe) + for (nr_probes = 0; old[nr_probes].func; nr_probes++) + if (old[nr_probes].func == probe && + old[nr_probes].data == data) return ERR_PTR(-EEXIST); } /* + 2 : one for new probe, one for NULL func */ @@ -120,9 +122,10 @@ tracepoint_entry_add_probe(struct tracepoint_entry *entry, void *probe) if (new == NULL) return ERR_PTR(-ENOMEM); if (old) - memcpy(new, old, nr_probes * sizeof(void *)); - new[nr_probes] = probe; - new[nr_probes + 1] = NULL; + memcpy(new, old, nr_probes * sizeof(struct tracepoint_func)); + new[nr_probes].func = probe; + new[nr_probes].data = data; + new[nr_probes + 1].func = NULL; entry->refcount = nr_probes + 1; entry->funcs = new; debug_print_probes(entry); @@ -130,10 +133,11 @@ tracepoint_entry_add_probe(struct tracepoint_entry *entry, void *probe) } static void * -tracepoint_entry_remove_probe(struct tracepoint_entry *entry, void *probe) +tracepoint_entry_remove_probe(struct tracepoint_entry *entry, + void *probe, void *data) { int nr_probes = 0, nr_del = 0, i; - void **old, **new; + struct tracepoint_func *old, *new; old = entry->funcs; @@ -142,8 +146,10 @@ tracepoint_entry_remove_probe(struct tracepoint_entry *entry, void *probe) debug_print_probes(entry); /* (N -> M), (N > 1, M >= 0) probes */ - for (nr_probes = 0; old[nr_probes]; nr_probes++) { - if ((!probe || old[nr_probes] == probe)) + for (nr_probes = 0; old[nr_probes].func; nr_probes++) { + if (!probe || + (old[nr_probes].func == probe && + old[nr_probes].data == data)) nr_del++; } @@ -160,10 +166,11 @@ tracepoint_entry_remove_probe(struct tracepoint_entry *entry, void *probe) new = allocate_probes(nr_probes - nr_del + 1); if (new == NULL) return ERR_PTR(-ENOMEM); - for (i = 0; old[i]; i++) - if ((probe && old[i] != probe)) + for (i = 0; old[i].func; i++) + if (probe && + (old[i].func != probe || old[i].data != data)) new[j++] = old[i]; - new[nr_probes - nr_del] = NULL; + new[nr_probes - nr_del].func = NULL; entry->refcount = nr_probes - nr_del; entry->funcs = new; } @@ -315,18 +322,19 @@ static void tracepoint_update_probes(void) module_update_tracepoints(); } -static void *tracepoint_add_probe(const char *name, void *probe) +static struct tracepoint_func * +tracepoint_add_probe(const char *name, void *probe, void *data) { struct tracepoint_entry *entry; - void *old; + struct tracepoint_func *old; entry = get_tracepoint(name); if (!entry) { entry = add_tracepoint(name); if (IS_ERR(entry)) - return entry; + return (struct tracepoint_func *)entry; } - old = tracepoint_entry_add_probe(entry, probe); + old = tracepoint_entry_add_probe(entry, probe, data); if (IS_ERR(old) && !entry->refcount) remove_tracepoint(entry); return old; @@ -340,12 +348,12 @@ static void *tracepoint_add_probe(const char *name, void *probe) * Returns 0 if ok, error value on error. * The probe address must at least be aligned on the architecture pointer size. */ -int tracepoint_probe_register(const char *name, void *probe) +int tracepoint_probe_register(const char *name, void *probe, void *data) { - void *old; + struct tracepoint_func *old; mutex_lock(&tracepoints_mutex); - old = tracepoint_add_probe(name, probe); + old = tracepoint_add_probe(name, probe, data); mutex_unlock(&tracepoints_mutex); if (IS_ERR(old)) return PTR_ERR(old); @@ -356,15 +364,16 @@ int tracepoint_probe_register(const char *name, void *probe) } EXPORT_SYMBOL_GPL(tracepoint_probe_register); -static void *tracepoint_remove_probe(const char *name, void *probe) +static struct tracepoint_func * +tracepoint_remove_probe(const char *name, void *probe, void *data) { struct tracepoint_entry *entry; - void *old; + struct tracepoint_func *old; entry = get_tracepoint(name); if (!entry) return ERR_PTR(-ENOENT); - old = tracepoint_entry_remove_probe(entry, probe); + old = tracepoint_entry_remove_probe(entry, probe, data); if (IS_ERR(old)) return old; if (!entry->refcount) @@ -382,12 +391,12 @@ static void *tracepoint_remove_probe(const char *name, void *probe) * itself uses stop_machine(), which insures that every preempt disabled section * have finished. */ -int tracepoint_probe_unregister(const char *name, void *probe) +int tracepoint_probe_unregister(const char *name, void *probe, void *data) { - void *old; + struct tracepoint_func *old; mutex_lock(&tracepoints_mutex); - old = tracepoint_remove_probe(name, probe); + old = tracepoint_remove_probe(name, probe, data); mutex_unlock(&tracepoints_mutex); if (IS_ERR(old)) return PTR_ERR(old); @@ -418,12 +427,13 @@ static void tracepoint_add_old_probes(void *old) * * caller must call tracepoint_probe_update_all() */ -int tracepoint_probe_register_noupdate(const char *name, void *probe) +int tracepoint_probe_register_noupdate(const char *name, void *probe, + void *data) { - void *old; + struct tracepoint_func *old; mutex_lock(&tracepoints_mutex); - old = tracepoint_add_probe(name, probe); + old = tracepoint_add_probe(name, probe, data); if (IS_ERR(old)) { mutex_unlock(&tracepoints_mutex); return PTR_ERR(old); @@ -441,12 +451,13 @@ EXPORT_SYMBOL_GPL(tracepoint_probe_register_noupdate); * * caller must call tracepoint_probe_update_all() */ -int tracepoint_probe_unregister_noupdate(const char *name, void *probe) +int tracepoint_probe_unregister_noupdate(const char *name, void *probe, + void *data) { - void *old; + struct tracepoint_func *old; mutex_lock(&tracepoints_mutex); - old = tracepoint_remove_probe(name, probe); + old = tracepoint_remove_probe(name, probe, data); if (IS_ERR(old)) { mutex_unlock(&tracepoints_mutex); return PTR_ERR(old); |