From: Michael Jeanson Date: Thu, 8 Nov 2018 20:24:01 +0000 (-0500) Subject: Drop compat patches for kernels < 2.6.36 X-Git-Tag: v2.12.0-pre~100 X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=ca2fca6b64297227b2565773a495803aa90c148e;p=lttng-modules.git Drop compat patches for kernels < 2.6.36 Signed-off-by: Michael Jeanson Signed-off-by: Mathieu Desnoyers --- diff --git a/linux-patches/backport-kallsym-sym-2.6.32.patch b/linux-patches/backport-kallsym-sym-2.6.32.patch deleted file mode 100644 index 2e72124a..00000000 --- a/linux-patches/backport-kallsym-sym-2.6.32.patch +++ /dev/null @@ -1,37 +0,0 @@ -commit e6b48d720e39d17f06a4462be4164e1a358817de -Author: Mathieu Desnoyers -Date: Sat Sep 1 17:51:33 2012 -0700 - - kallsyms: Re-enable export of kallsyms_lookup (backport) - - Backport of part of commit: - - commit f60d24d2ad04977b0bd9e3eb35dba2d2fa569af9 - Author: Frederic Weisbecker - Date: Tue Nov 10 10:17:07 2009 +0100 - - hw-breakpoints: Fix broken hw-breakpoint sample module - - The hw-breakpoint sample module has been broken during the - hw-breakpoint internals refactoring. Propagate the changes - to it. - - Reported-by: "K. Prasad" - Signed-off-by: Frederic Weisbecker - - for kernel 2.6.32.x. (just the symbol export) - - Signed-off-by: Mathieu Desnoyers - -diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c -index 8b6b8b6..8e5288a 100644 ---- a/kernel/kallsyms.c -+++ b/kernel/kallsyms.c -@@ -181,6 +181,7 @@ unsigned long kallsyms_lookup_name(const char *name) - } - return module_kallsyms_lookup_name(name); - } -+EXPORT_SYMBOL_GPL(kallsyms_lookup_name); - - int kallsyms_on_each_symbol(int (*fn)(void *, const char *, struct module *, - unsigned long), diff --git a/linux-patches/backport-splice-sym-2.6.32-34.patch b/linux-patches/backport-splice-sym-2.6.32-34.patch deleted file mode 100644 index 00be3b5c..00000000 --- a/linux-patches/backport-splice-sym-2.6.32-34.patch +++ /dev/null @@ -1,71 +0,0 @@ -commit f0d902f497ee2fb747086322a31925c7fb351d7a -Author: Mathieu Desnoyers -Date: Sat Sep 1 17:47:36 2012 -0700 - - mm: export generic_pipe_buf_*() to modules (backport) - - Backport for 2.6.32.x to 2.6.34.x of commits: - - commit 51921cb746f56983db5a373ca68deb2b0d3ddf01 - Author: Miklos Szeredi - Date: Wed May 26 08:44:22 2010 +0200 - - mm: export generic_pipe_buf_*() to modules - - This is needed by fuse device code which wants to create pipe buffers. - Signed-off-by: Miklos Szeredi - - Signed-off-by: Mathieu Desnoyers - -diff --git a/fs/pipe.c b/fs/pipe.c -index d0cc080..0eb6f53 100644 ---- a/fs/pipe.c -+++ b/fs/pipe.c -@@ -222,6 +222,7 @@ void *generic_pipe_buf_map(struct pipe_inode_info *pipe, - - return kmap(buf->page); - } -+EXPORT_SYMBOL(generic_pipe_buf_map); - - /** - * generic_pipe_buf_unmap - unmap a previously mapped pipe buffer -@@ -241,6 +242,7 @@ void generic_pipe_buf_unmap(struct pipe_inode_info *pipe, - } else - kunmap(buf->page); - } -+EXPORT_SYMBOL(generic_pipe_buf_unmap); - - /** - * generic_pipe_buf_steal - attempt to take ownership of a &pipe_buffer -@@ -271,6 +273,7 @@ int generic_pipe_buf_steal(struct pipe_inode_info *pipe, - - return 1; - } -+EXPORT_SYMBOL(generic_pipe_buf_steal); - - /** - * generic_pipe_buf_get - get a reference to a &struct pipe_buffer -@@ -286,6 +289,7 @@ void generic_pipe_buf_get(struct pipe_inode_info *pipe, struct pipe_buffer *buf) - { - page_cache_get(buf->page); - } -+EXPORT_SYMBOL(generic_pipe_buf_get); - - /** - * generic_pipe_buf_confirm - verify contents of the pipe buffer -@@ -301,6 +305,7 @@ int generic_pipe_buf_confirm(struct pipe_inode_info *info, - { - return 0; - } -+EXPORT_SYMBOL(generic_pipe_buf_confirm); - - /** - * generic_pipe_buf_release - put a reference to a &struct pipe_buffer -@@ -315,6 +320,7 @@ void generic_pipe_buf_release(struct pipe_inode_info *pipe, - { - page_cache_release(buf->page); - } -+EXPORT_SYMBOL(generic_pipe_buf_release); - - static const struct pipe_buf_operations anon_pipe_buf_ops = { - .can_merge = 1, diff --git a/linux-patches/backport-tp-2.6.34-tracepoint-data.patch b/linux-patches/backport-tp-2.6.34-tracepoint-data.patch deleted file mode 100644 index 0ffd7e1f..00000000 --- a/linux-patches/backport-tp-2.6.34-tracepoint-data.patch +++ /dev/null @@ -1,559 +0,0 @@ -commit 2c2a566b64b4254c530fb0c2222b30e8a739bac9 -Author: Mathieu Desnoyers -Date: Sat Sep 1 17:45:09 2012 -0700 - - tracing: Let tracepoints have data passed to tracepoint callbacks (backport) - - Backport of commit 38516ab59fbc5b3bb278cf5e1fe2867c70cff32e for - 2.6.34.x. Keeping kABI compatibility. - - Signed-off-by: Mathieu Desnoyers - ---- - include/linux/tracepoint.h | 149 +++++++++++++++++++++++++-------- - kernel/tracepoint.c | 144 ++++++++++++++++++++++--------- - samples/tracepoints/tp-samples-trace.h | 4 +- - 3 files changed, 220 insertions(+), 77 deletions(-) - -Index: linux/include/linux/tracepoint.h -=================================================================== ---- linux.orig/include/linux/tracepoint.h -+++ linux/include/linux/tracepoint.h -@@ -20,12 +20,20 @@ - struct module; - struct tracepoint; - -+#define HAVE_KABI_2635_TRACEPOINT -+ -+struct tracepoint_func { -+ void *func; -+ void *data; -+ bool kabi_2635; -+}; -+ - struct tracepoint { - const char *name; /* Tracepoint name */ - int state; /* State. */ - void (*regfunc)(void); - void (*unregfunc)(void); -- void **funcs; -+ struct tracepoint_func *funcs; - } __attribute__((aligned(32))); /* - * Aligned on 32 bytes because it is - * globally visible and gcc happily -@@ -43,17 +51,33 @@ struct tracepoint { - /* - * it_func[0] is never NULL because there is at least one element in the array - * when the array itself is non NULL. -- */ --#define __DO_TRACE(tp, proto, args) \ -- do { \ -- void **it_func; \ -+ * -+ * Note, the proto and args passed in includes "__data" as the first parameter. -+ * The reason for this is to handle the "void" prototype. If a tracepoint -+ * has a "void" prototype, then it is invalid to declare a function -+ * as "(void *, void)". The DECLARE_TRACE_NOARGS() will pass in just -+ * "void *data", where as the DECLARE_TRACE() will pass in "void *data, proto". -+ */ -+#define __DO_TRACE(tp, data_proto, data_args, proto, args) \ -+ do { \ -+ struct tracepoint_func *it_func_ptr; \ -+ void *it_func; \ -+ \ -+ rcu_read_lock_sched_notrace(); \ -+ it_func_ptr = rcu_dereference_sched((tp)->funcs); \ -+ if (it_func_ptr) { \ -+ do { \ -+ if (it_func_ptr->kabi_2635) { \ -+ void *__data; \ - \ -- rcu_read_lock_sched_notrace(); \ -- it_func = rcu_dereference_sched((tp)->funcs); \ -- if (it_func) { \ -- do { \ -- ((void(*)(proto))(*it_func))(args); \ -- } while (*(++it_func)); \ -+ it_func = (it_func_ptr)->func; \ -+ __data = (it_func_ptr)->data; \ -+ ((void(*)(data_proto))(it_func))(data_args); \ -+ } else { \ -+ it_func = (it_func_ptr)->func; \ -+ ((void(*)(proto))(it_func))(args); \ -+ } \ -+ } while ((++it_func_ptr)->func); \ - } \ - rcu_read_unlock_sched_notrace(); \ - } while (0) -@@ -63,22 +87,39 @@ struct tracepoint { - * not add unwanted padding between the beginning of the section and the - * structure. Force alignment to the same alignment as the section start. - */ --#define DECLARE_TRACE(name, proto, args) \ -+#define __DECLARE_TRACE(name, proto, args, data_proto, data_args) \ - extern struct tracepoint __tracepoint_##name; \ - static inline void trace_##name(proto) \ - { \ - if (unlikely(__tracepoint_##name.state)) \ - __DO_TRACE(&__tracepoint_##name, \ -- TP_PROTO(proto), TP_ARGS(args)); \ -+ TP_PROTO(data_proto), \ -+ TP_ARGS(data_args), \ -+ TP_PROTO(proto), \ -+ TP_ARGS(args)); \ - } \ -- static inline int register_trace_##name(void (*probe)(proto)) \ -- { \ -+ static inline int \ -+ register_trace_##name(void (*probe)(proto)) \ -+ { \ - return tracepoint_probe_register(#name, (void *)probe); \ -- } \ -- static inline int unregister_trace_##name(void (*probe)(proto)) \ -- { \ -- return tracepoint_probe_unregister(#name, (void *)probe);\ -- } -+ } \ -+ static inline int \ -+ unregister_trace_##name(void (*probe)(proto)) \ -+ { \ -+ return tracepoint_probe_unregister(#name, (void *)probe); \ -+ } \ -+ static inline int \ -+ kabi_2635_register_trace_##name(void (*probe)(data_proto), void *data) \ -+ { \ -+ return kabi_2635_tracepoint_probe_register(#name, (void *)probe, \ -+ data); \ -+ } \ -+ static inline int \ -+ kabi_2635_unregister_trace_##name(void (*probe)(data_proto), void *data) \ -+ { \ -+ return kabi_2635_tracepoint_probe_unregister(#name, (void *)probe, \ -+ data); \ -+ } - - - #define DEFINE_TRACE_FN(name, reg, unreg) \ -@@ -100,19 +141,29 @@ extern void tracepoint_update_probe_rang - struct tracepoint *end); - - #else /* !CONFIG_TRACEPOINTS */ --#define DECLARE_TRACE(name, proto, args) \ -- static inline void _do_trace_##name(struct tracepoint *tp, proto) \ -- { } \ -- static inline void trace_##name(proto) \ -- { } \ -- static inline int register_trace_##name(void (*probe)(proto)) \ -- { \ -- return -ENOSYS; \ -- } \ -- static inline int unregister_trace_##name(void (*probe)(proto)) \ -- { \ -- return -ENOSYS; \ -- } -+#define __DECLARE_TRACE(name, proto, args, data_proto, data_args) \ -+ static inline void trace_##name(proto) \ -+ { } \ -+ static inline int \ -+ register_trace_##name(void (*probe)(proto)) \ -+ { \ -+ return -ENOSYS; \ -+ } \ -+ static inline int \ -+ unregister_trace_##name(void (*probe)(proto)) \ -+ { \ -+ return -ENOSYS; \ -+ } \ -+ static inline int \ -+ kabi_2635_register_trace_##name(void (*probe)(data_proto), void *data) \ -+ { \ -+ return -ENOSYS; \ -+ } \ -+ static inline int \ -+ kabi_2635_unregister_trace_##name(void (*probe)(data_proto), void *data) \ -+ { \ -+ return -ENOSYS; \ -+ } - - #define DEFINE_TRACE_FN(name, reg, unreg) - #define DEFINE_TRACE(name) -@@ -123,6 +174,28 @@ static inline void tracepoint_update_pro - struct tracepoint *end) - { } - #endif /* CONFIG_TRACEPOINTS */ -+ -+/* -+ * The need for the DECLARE_TRACE_NOARGS() is to handle the prototype -+ * (void). "void" is a special value in a function prototype and can -+ * not be combined with other arguments. Since the DECLARE_TRACE() -+ * macro adds a data element at the beginning of the prototype, -+ * we need a way to differentiate "(void *data, proto)" from -+ * "(void *data, void)". The second prototype is invalid. -+ * -+ * DECLARE_TRACE_NOARGS() passes "void" as the tracepoint prototype -+ * and "void *__data" as the callback prototype. -+ * -+ * DECLARE_TRACE() passes "proto" as the tracepoint protoype and -+ * "void *__data, proto" as the callback prototype. -+ */ -+#define DECLARE_TRACE_NOARGS(name) \ -+ __DECLARE_TRACE(name, void, , void *__data, __data) -+#define DECLARE_TRACE(name, proto, args) \ -+ __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ -+ PARAMS(void *__data, proto), \ -+ PARAMS(__data, args)) -+ - #endif /* DECLARE_TRACE */ - - /* -@@ -130,15 +203,23 @@ static inline void tracepoint_update_pro - * Internal API, should not be used directly. - */ - extern int tracepoint_probe_register(const char *name, void *probe); -+extern int kabi_2635_tracepoint_probe_register(const char *name, void *probe, void *data); - - /* - * Disconnect a probe from a tracepoint. - * Internal API, should not be used directly. - */ --extern int tracepoint_probe_unregister(const char *name, void *probe); -+extern int -+tracepoint_probe_unregister(const char *name, void *probe); -+extern int -+kabi_2635_tracepoint_probe_unregister(const char *name, void *probe, void *data); - - extern int tracepoint_probe_register_noupdate(const char *name, void *probe); -+extern int kabi_2635_tracepoint_probe_register_noupdate(const char *name, void *probe, -+ void *data); - extern int tracepoint_probe_unregister_noupdate(const char *name, void *probe); -+extern int kabi_2635_tracepoint_probe_unregister_noupdate(const char *name, void *probe, -+ void *data); - extern void tracepoint_probe_update_all(void); - - struct tracepoint_iter { -Index: linux/kernel/tracepoint.c -=================================================================== ---- linux.orig/kernel/tracepoint.c -+++ linux/kernel/tracepoint.c -@@ -54,7 +54,7 @@ static struct hlist_head tracepoint_tabl - */ - 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 r - 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 tr - 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, bool kabi_2635) - { - int nr_probes = 0; -- void **old, **new; -+ struct tracepoint_func *old, *new; - - WARN_ON(!probe); - -@@ -111,8 +112,9 @@ tracepoint_entry_add_probe(struct tracep - 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 +122,11 @@ tracepoint_entry_add_probe(struct tracep - 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].kabi_2635 = kabi_2635; -+ new[nr_probes + 1].func = NULL; - entry->refcount = nr_probes + 1; - entry->funcs = new; - debug_print_probes(entry); -@@ -130,10 +134,11 @@ tracepoint_entry_add_probe(struct tracep - } - - 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 +147,10 @@ tracepoint_entry_remove_probe(struct tra - - 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 +167,11 @@ tracepoint_entry_remove_probe(struct tra - 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 +323,19 @@ static void tracepoint_update_probes(voi - 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, bool kabi_2635) - { - 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, kabi_2635); - if (IS_ERR(old) && !entry->refcount) - remove_tracepoint(entry); - return old; -@@ -340,12 +349,14 @@ static void *tracepoint_add_probe(const - * 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) -+static -+int ___tracepoint_probe_register(const char *name, void *probe, void *data, -+ bool kabi_2635) - { -- void *old; -+ struct tracepoint_func *old; - - mutex_lock(&tracepoints_mutex); -- old = tracepoint_add_probe(name, probe); -+ old = tracepoint_add_probe(name, probe, data, kabi_2635); - mutex_unlock(&tracepoints_mutex); - if (IS_ERR(old)) - return PTR_ERR(old); -@@ -354,17 +365,30 @@ int tracepoint_probe_register(const char - release_probes(old); - return 0; - } -+ -+int kabi_2635_tracepoint_probe_register(const char *name, void *probe, void *data) -+{ -+ return ___tracepoint_probe_register(name, probe, data, 1); -+} -+EXPORT_SYMBOL_GPL(kabi_2635_tracepoint_probe_register); -+ -+ -+int tracepoint_probe_register(const char *name, void *probe) -+{ -+ return ___tracepoint_probe_register(name, probe, NULL, 0); -+} - 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 +406,13 @@ static void *tracepoint_remove_probe(con - * itself uses stop_machine(), which insures that every preempt disabled section - * have finished. - */ --int tracepoint_probe_unregister(const char *name, void *probe) -+static -+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); -@@ -396,6 +421,17 @@ int tracepoint_probe_unregister(const ch - release_probes(old); - return 0; - } -+ -+int kabi_2635_tracepoint_probe_unregister(const char *name, void *probe, void *data) -+{ -+ return ___tracepoint_probe_unregister(name, probe, data); -+} -+EXPORT_SYMBOL_GPL(kabi_2635_tracepoint_probe_unregister); -+ -+int tracepoint_probe_unregister(const char *name, void *probe) -+{ -+ return ___tracepoint_probe_unregister(name, probe, NULL); -+} - EXPORT_SYMBOL_GPL(tracepoint_probe_unregister); - - static LIST_HEAD(old_probes); -@@ -418,12 +454,14 @@ static void tracepoint_add_old_probes(vo - * - * caller must call tracepoint_probe_update_all() - */ --int tracepoint_probe_register_noupdate(const char *name, void *probe) -+static -+int ___tracepoint_probe_register_noupdate(const char *name, void *probe, -+ void *data, bool kabi_2635) - { -- void *old; -+ struct tracepoint_func *old; - - mutex_lock(&tracepoints_mutex); -- old = tracepoint_add_probe(name, probe); -+ old = tracepoint_add_probe(name, probe, data, kabi_2635); - if (IS_ERR(old)) { - mutex_unlock(&tracepoints_mutex); - return PTR_ERR(old); -@@ -432,6 +470,18 @@ int tracepoint_probe_register_noupdate(c - mutex_unlock(&tracepoints_mutex); - return 0; - } -+ -+int kabi_2635_tracepoint_probe_register_noupdate(const char *name, void *probe, -+ void *data) -+{ -+ return ___tracepoint_probe_register_noupdate(name, probe, data, 1); -+} -+EXPORT_SYMBOL_GPL(kabi_2635_tracepoint_probe_register_noupdate); -+ -+int tracepoint_probe_register_noupdate(const char *name, void *probe) -+{ -+ return ___tracepoint_probe_register_noupdate(name, probe, NULL, 0); -+} - EXPORT_SYMBOL_GPL(tracepoint_probe_register_noupdate); - - /** -@@ -441,12 +491,14 @@ EXPORT_SYMBOL_GPL(tracepoint_probe_regis - * - * caller must call tracepoint_probe_update_all() - */ --int tracepoint_probe_unregister_noupdate(const char *name, void *probe) -+static -+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); -@@ -455,6 +507,18 @@ int tracepoint_probe_unregister_noupdate - mutex_unlock(&tracepoints_mutex); - return 0; - } -+ -+int kabi_2635_tracepoint_probe_unregister_noupdate(const char *name, void *probe, -+ void *data) -+{ -+ return ___tracepoint_probe_unregister_noupdate(name, probe, data); -+} -+EXPORT_SYMBOL_GPL(kabi_2635_tracepoint_probe_unregister_noupdate); -+ -+int tracepoint_probe_unregister_noupdate(const char *name, void *probe) -+{ -+ return ___tracepoint_probe_unregister_noupdate(name, probe, NULL); -+} - EXPORT_SYMBOL_GPL(tracepoint_probe_unregister_noupdate); - - /** -Index: linux/samples/tracepoints/tp-samples-trace.h -=================================================================== ---- linux.orig/samples/tracepoints/tp-samples-trace.h -+++ linux/samples/tracepoints/tp-samples-trace.h -@@ -7,7 +7,5 @@ - DECLARE_TRACE(subsys_event, - TP_PROTO(struct inode *inode, struct file *file), - TP_ARGS(inode, file)); --DECLARE_TRACE(subsys_eventb, -- TP_PROTO(void), -- TP_ARGS()); -+DECLARE_TRACE_NOARGS(subsys_eventb); - #endif diff --git a/linux-patches/backport-tracepoint-data-2.6.32-33.patch b/linux-patches/backport-tracepoint-data-2.6.32-33.patch deleted file mode 100644 index e53b4766..00000000 --- a/linux-patches/backport-tracepoint-data-2.6.32-33.patch +++ /dev/null @@ -1,555 +0,0 @@ -commit 2c2a566b64b4254c530fb0c2222b30e8a739bac9 -Author: Mathieu Desnoyers -Date: Sat Sep 1 17:45:09 2012 -0700 - - tracing: Let tracepoints have data passed to tracepoint callbacks (backport) - - Backport of commit 38516ab59fbc5b3bb278cf5e1fe2867c70cff32e for - 2.6.32.x and 2.6.33.x. Keeping kABI compatibility. - - Signed-off-by: Mathieu Desnoyers - ---- - include/linux/tracepoint.h | 141 +++++++++++++++++++++++++------- - kernel/tracepoint.c | 144 ++++++++++++++++++++++++--------- - samples/tracepoints/tp-samples-trace.h | 4 +- - 3 files changed, 216 insertions(+), 73 deletions(-) - -Index: linux/include/linux/tracepoint.h -=================================================================== ---- linux.orig/include/linux/tracepoint.h -+++ linux/include/linux/tracepoint.h -@@ -20,12 +20,20 @@ - struct module; - struct tracepoint; - -+#define HAVE_KABI_2635_TRACEPOINT -+ -+struct tracepoint_func { -+ void *func; -+ void *data; -+ bool kabi_2635; -+}; -+ - struct tracepoint { - const char *name; /* Tracepoint name */ - int state; /* State. */ - void (*regfunc)(void); - void (*unregfunc)(void); -- void **funcs; -+ struct tracepoint_func *funcs; - } __attribute__((aligned(32))); /* - * Aligned on 32 bytes because it is - * globally visible and gcc happily -@@ -43,17 +51,33 @@ struct tracepoint { - /* - * it_func[0] is never NULL because there is at least one element in the array - * when the array itself is non NULL. -+ * -+ * Note, the proto and args passed in includes "__data" as the first parameter. -+ * The reason for this is to handle the "void" prototype. If a tracepoint -+ * has a "void" prototype, then it is invalid to declare a function -+ * as "(void *, void)". The DECLARE_TRACE_NOARGS() will pass in just -+ * "void *data", where as the DECLARE_TRACE() will pass in "void *data, proto". - */ --#define __DO_TRACE(tp, proto, args) \ -+#define __DO_TRACE(tp, data_proto, data_args, proto, args) \ - do { \ -- void **it_func; \ -+ struct tracepoint_func *it_func_ptr; \ -+ void *it_func; \ - \ - rcu_read_lock_sched_notrace(); \ -- it_func = rcu_dereference((tp)->funcs); \ -- if (it_func) { \ -+ it_func_ptr = rcu_dereference((tp)->funcs); \ -+ if (it_func_ptr) { \ - do { \ -- ((void(*)(proto))(*it_func))(args); \ -- } while (*(++it_func)); \ -+ if (it_func_ptr->kabi_2635) { \ -+ void *__data; \ -+ \ -+ it_func = (it_func_ptr)->func; \ -+ __data = (it_func_ptr)->data; \ -+ ((void(*)(data_proto))(it_func))(data_args); \ -+ } else { \ -+ it_func = (it_func_ptr)->func; \ -+ ((void(*)(proto))(it_func))(args); \ -+ } \ -+ } while ((++it_func_ptr)->func); \ - } \ - rcu_read_unlock_sched_notrace(); \ - } while (0) -@@ -63,22 +87,39 @@ struct tracepoint { - * not add unwanted padding between the beginning of the section and the - * structure. Force alignment to the same alignment as the section start. - */ --#define DECLARE_TRACE(name, proto, args) \ -+#define __DECLARE_TRACE(name, proto, args, data_proto, data_args) \ - extern struct tracepoint __tracepoint_##name; \ - static inline void trace_##name(proto) \ - { \ - if (unlikely(__tracepoint_##name.state)) \ - __DO_TRACE(&__tracepoint_##name, \ -- TP_PROTO(proto), TP_ARGS(args)); \ -+ TP_PROTO(data_proto), \ -+ TP_ARGS(data_args), \ -+ TP_PROTO(proto), \ -+ TP_ARGS(args)); \ - } \ -- static inline int register_trace_##name(void (*probe)(proto)) \ -- { \ -+ static inline int \ -+ register_trace_##name(void (*probe)(proto)) \ -+ { \ - return tracepoint_probe_register(#name, (void *)probe); \ -- } \ -- static inline int unregister_trace_##name(void (*probe)(proto)) \ -- { \ -- return tracepoint_probe_unregister(#name, (void *)probe);\ -- } -+ } \ -+ static inline int \ -+ unregister_trace_##name(void (*probe)(proto)) \ -+ { \ -+ return tracepoint_probe_unregister(#name, (void *)probe); \ -+ } \ -+ static inline int \ -+ kabi_2635_register_trace_##name(void (*probe)(data_proto), void *data) \ -+ { \ -+ return kabi_2635_tracepoint_probe_register(#name, (void *)probe, \ -+ data); \ -+ } \ -+ static inline int \ -+ kabi_2635_unregister_trace_##name(void (*probe)(data_proto), void *data) \ -+ { \ -+ return kabi_2635_tracepoint_probe_unregister(#name, (void *)probe, \ -+ data); \ -+ } - - - #define DEFINE_TRACE_FN(name, reg, unreg) \ -@@ -100,19 +141,29 @@ extern void tracepoint_update_probe_rang - struct tracepoint *end); - - #else /* !CONFIG_TRACEPOINTS */ --#define DECLARE_TRACE(name, proto, args) \ -- static inline void _do_trace_##name(struct tracepoint *tp, proto) \ -- { } \ -- static inline void trace_##name(proto) \ -- { } \ -- static inline int register_trace_##name(void (*probe)(proto)) \ -- { \ -- return -ENOSYS; \ -- } \ -- static inline int unregister_trace_##name(void (*probe)(proto)) \ -- { \ -- return -ENOSYS; \ -- } -+#define __DECLARE_TRACE(name, proto, args, data_proto, data_args) \ -+ static inline void trace_##name(proto) \ -+ { } \ -+ static inline int \ -+ register_trace_##name(void (*probe)(proto)) \ -+ { \ -+ return -ENOSYS; \ -+ } \ -+ static inline int \ -+ unregister_trace_##name(void (*probe)(proto)) \ -+ { \ -+ return -ENOSYS; \ -+ } \ -+ static inline int \ -+ kabi_2635_register_trace_##name(void (*probe)(data_proto), void *data) \ -+ { \ -+ return -ENOSYS; \ -+ } \ -+ static inline int \ -+ kabi_2635_unregister_trace_##name(void (*probe)(data_proto), void *data) \ -+ { \ -+ return -ENOSYS; \ -+ } - - #define DEFINE_TRACE_FN(name, reg, unreg) - #define DEFINE_TRACE(name) -@@ -123,6 +174,28 @@ static inline void tracepoint_update_pro - struct tracepoint *end) - { } - #endif /* CONFIG_TRACEPOINTS */ -+ -+/* -+ * The need for the DECLARE_TRACE_NOARGS() is to handle the prototype -+ * (void). "void" is a special value in a function prototype and can -+ * not be combined with other arguments. Since the DECLARE_TRACE() -+ * macro adds a data element at the beginning of the prototype, -+ * we need a way to differentiate "(void *data, proto)" from -+ * "(void *data, void)". The second prototype is invalid. -+ * -+ * DECLARE_TRACE_NOARGS() passes "void" as the tracepoint prototype -+ * and "void *__data" as the callback prototype. -+ * -+ * DECLARE_TRACE() passes "proto" as the tracepoint protoype and -+ * "void *__data, proto" as the callback prototype. -+ */ -+#define DECLARE_TRACE_NOARGS(name) \ -+ __DECLARE_TRACE(name, void, , void *__data, __data) -+#define DECLARE_TRACE(name, proto, args) \ -+ __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \ -+ PARAMS(void *__data, proto), \ -+ PARAMS(__data, args)) -+ - #endif /* DECLARE_TRACE */ - - /* -@@ -130,15 +203,23 @@ static inline void tracepoint_update_pro - * Internal API, should not be used directly. - */ - extern int tracepoint_probe_register(const char *name, void *probe); -+extern int kabi_2635_tracepoint_probe_register(const char *name, void *probe, void *data); - - /* - * Disconnect a probe from a tracepoint. - * Internal API, should not be used directly. - */ --extern int tracepoint_probe_unregister(const char *name, void *probe); -+extern int -+tracepoint_probe_unregister(const char *name, void *probe); -+extern int -+kabi_2635_tracepoint_probe_unregister(const char *name, void *probe, void *data); - - extern int tracepoint_probe_register_noupdate(const char *name, void *probe); -+extern int kabi_2635_tracepoint_probe_register_noupdate(const char *name, void *probe, -+ void *data); - extern int tracepoint_probe_unregister_noupdate(const char *name, void *probe); -+extern int kabi_2635_tracepoint_probe_unregister_noupdate(const char *name, void *probe, -+ void *data); - extern void tracepoint_probe_update_all(void); - - struct tracepoint_iter { -Index: linux/kernel/tracepoint.c -=================================================================== ---- linux.orig/kernel/tracepoint.c -+++ linux/kernel/tracepoint.c -@@ -54,7 +54,7 @@ static struct hlist_head tracepoint_tabl - */ - 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 r - 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 tr - 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, bool kabi_2635) - { - int nr_probes = 0; -- void **old, **new; -+ struct tracepoint_func *old, *new; - - WARN_ON(!probe); - -@@ -111,8 +112,9 @@ tracepoint_entry_add_probe(struct tracep - 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 +122,11 @@ tracepoint_entry_add_probe(struct tracep - 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].kabi_2635 = kabi_2635; -+ new[nr_probes + 1].func = NULL; - entry->refcount = nr_probes + 1; - entry->funcs = new; - debug_print_probes(entry); -@@ -130,10 +134,11 @@ tracepoint_entry_add_probe(struct tracep - } - - 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 +147,10 @@ tracepoint_entry_remove_probe(struct tra - - 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 +167,11 @@ tracepoint_entry_remove_probe(struct tra - 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 +323,19 @@ static void tracepoint_update_probes(voi - 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, bool kabi_2635) - { - 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, kabi_2635); - if (IS_ERR(old) && !entry->refcount) - remove_tracepoint(entry); - return old; -@@ -340,12 +349,14 @@ static void *tracepoint_add_probe(const - * 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) -+static -+int ___tracepoint_probe_register(const char *name, void *probe, void *data, -+ bool kabi_2635) - { -- void *old; -+ struct tracepoint_func *old; - - mutex_lock(&tracepoints_mutex); -- old = tracepoint_add_probe(name, probe); -+ old = tracepoint_add_probe(name, probe, data, kabi_2635); - mutex_unlock(&tracepoints_mutex); - if (IS_ERR(old)) - return PTR_ERR(old); -@@ -354,17 +365,30 @@ int tracepoint_probe_register(const char - release_probes(old); - return 0; - } -+ -+int kabi_2635_tracepoint_probe_register(const char *name, void *probe, void *data) -+{ -+ return ___tracepoint_probe_register(name, probe, data, 1); -+} -+EXPORT_SYMBOL_GPL(kabi_2635_tracepoint_probe_register); -+ -+ -+int tracepoint_probe_register(const char *name, void *probe) -+{ -+ return ___tracepoint_probe_register(name, probe, NULL, 0); -+} - 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 +406,13 @@ static void *tracepoint_remove_probe(con - * itself uses stop_machine(), which insures that every preempt disabled section - * have finished. - */ --int tracepoint_probe_unregister(const char *name, void *probe) -+static -+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); -@@ -396,6 +421,17 @@ int tracepoint_probe_unregister(const ch - release_probes(old); - return 0; - } -+ -+int kabi_2635_tracepoint_probe_unregister(const char *name, void *probe, void *data) -+{ -+ return ___tracepoint_probe_unregister(name, probe, data); -+} -+EXPORT_SYMBOL_GPL(kabi_2635_tracepoint_probe_unregister); -+ -+int tracepoint_probe_unregister(const char *name, void *probe) -+{ -+ return ___tracepoint_probe_unregister(name, probe, NULL); -+} - EXPORT_SYMBOL_GPL(tracepoint_probe_unregister); - - static LIST_HEAD(old_probes); -@@ -418,12 +454,14 @@ static void tracepoint_add_old_probes(vo - * - * caller must call tracepoint_probe_update_all() - */ --int tracepoint_probe_register_noupdate(const char *name, void *probe) -+static -+int ___tracepoint_probe_register_noupdate(const char *name, void *probe, -+ void *data, bool kabi_2635) - { -- void *old; -+ struct tracepoint_func *old; - - mutex_lock(&tracepoints_mutex); -- old = tracepoint_add_probe(name, probe); -+ old = tracepoint_add_probe(name, probe, data, kabi_2635); - if (IS_ERR(old)) { - mutex_unlock(&tracepoints_mutex); - return PTR_ERR(old); -@@ -432,6 +470,18 @@ int tracepoint_probe_register_noupdate(c - mutex_unlock(&tracepoints_mutex); - return 0; - } -+ -+int kabi_2635_tracepoint_probe_register_noupdate(const char *name, void *probe, -+ void *data) -+{ -+ return ___tracepoint_probe_register_noupdate(name, probe, data, 1); -+} -+EXPORT_SYMBOL_GPL(kabi_2635_tracepoint_probe_register_noupdate); -+ -+int tracepoint_probe_register_noupdate(const char *name, void *probe) -+{ -+ return ___tracepoint_probe_register_noupdate(name, probe, NULL, 0); -+} - EXPORT_SYMBOL_GPL(tracepoint_probe_register_noupdate); - - /** -@@ -441,12 +491,14 @@ EXPORT_SYMBOL_GPL(tracepoint_probe_regis - * - * caller must call tracepoint_probe_update_all() - */ --int tracepoint_probe_unregister_noupdate(const char *name, void *probe) -+static -+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); -@@ -455,6 +507,18 @@ int tracepoint_probe_unregister_noupdate - mutex_unlock(&tracepoints_mutex); - return 0; - } -+ -+int kabi_2635_tracepoint_probe_unregister_noupdate(const char *name, void *probe, -+ void *data) -+{ -+ return ___tracepoint_probe_unregister_noupdate(name, probe, data); -+} -+EXPORT_SYMBOL_GPL(kabi_2635_tracepoint_probe_unregister_noupdate); -+ -+int tracepoint_probe_unregister_noupdate(const char *name, void *probe) -+{ -+ return ___tracepoint_probe_unregister_noupdate(name, probe, NULL); -+} - EXPORT_SYMBOL_GPL(tracepoint_probe_unregister_noupdate); - - /** -Index: linux/samples/tracepoints/tp-samples-trace.h -=================================================================== ---- linux.orig/samples/tracepoints/tp-samples-trace.h -+++ linux/samples/tracepoints/tp-samples-trace.h -@@ -7,7 +7,5 @@ - DECLARE_TRACE(subsys_event, - TP_PROTO(struct inode *inode, struct file *file), - TP_ARGS(inode, file)); --DECLARE_TRACE(subsys_eventb, -- TP_PROTO(void), -- TP_ARGS()); -+DECLARE_TRACE_NOARGS(subsys_eventb); - #endif