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-rw-r--r--include/linux/ftrace_event.h4
-rw-r--r--include/linux/kvm_host.h1
-rw-r--r--include/linux/nfs_fs.h5
-rw-r--r--include/linux/perf_counter.h60
-rw-r--r--include/linux/sunrpc/xdr.h10
-rw-r--r--include/linux/wait.h9
-rw-r--r--include/trace/ftrace.h183
7 files changed, 224 insertions, 48 deletions
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h
index d7cd193c2277..a81170de7f6b 100644
--- a/include/linux/ftrace_event.h
+++ b/include/linux/ftrace_event.h
@@ -89,7 +89,9 @@ enum print_line_t {
TRACE_TYPE_NO_CONSUME = 3 /* Handled but ask to not consume */
};
-
+void tracing_generic_entry_update(struct trace_entry *entry,
+ unsigned long flags,
+ int pc);
struct ring_buffer_event *
trace_current_buffer_lock_reserve(int type, unsigned long len,
unsigned long flags, int pc);
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 16713dc672e4..3060bdc35ffe 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -110,6 +110,7 @@ struct kvm_memory_slot {
struct kvm_kernel_irq_routing_entry {
u32 gsi;
+ u32 type;
int (*set)(struct kvm_kernel_irq_routing_entry *e,
struct kvm *kvm, int level);
union {
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index fdffb413b192..f6b90240dd41 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -473,7 +473,6 @@ extern int nfs_writepages(struct address_space *, struct writeback_control *);
extern int nfs_flush_incompatible(struct file *file, struct page *page);
extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int);
extern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *);
-extern void nfs_writedata_release(void *);
/*
* Try to write back everything synchronously (but check the
@@ -488,7 +487,6 @@ extern int nfs_wb_page_cancel(struct inode *inode, struct page* page);
extern int nfs_commit_inode(struct inode *, int);
extern struct nfs_write_data *nfs_commitdata_alloc(void);
extern void nfs_commit_free(struct nfs_write_data *wdata);
-extern void nfs_commitdata_release(void *wdata);
#else
static inline int
nfs_commit_inode(struct inode *inode, int how)
@@ -507,6 +505,7 @@ nfs_have_writebacks(struct inode *inode)
* Allocate nfs_write_data structures
*/
extern struct nfs_write_data *nfs_writedata_alloc(unsigned int npages);
+extern void nfs_writedata_free(struct nfs_write_data *);
/*
* linux/fs/nfs/read.c
@@ -515,7 +514,6 @@ extern int nfs_readpage(struct file *, struct page *);
extern int nfs_readpages(struct file *, struct address_space *,
struct list_head *, unsigned);
extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *);
-extern void nfs_readdata_release(void *data);
extern int nfs_readpage_async(struct nfs_open_context *, struct inode *,
struct page *);
@@ -523,6 +521,7 @@ extern int nfs_readpage_async(struct nfs_open_context *, struct inode *,
* Allocate nfs_read_data structures
*/
extern struct nfs_read_data *nfs_readdata_alloc(unsigned int npages);
+extern void nfs_readdata_free(struct nfs_read_data *);
/*
* linux/fs/nfs3proc.c
diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h
index e604e6ef72dd..b53f7006cc4e 100644
--- a/include/linux/perf_counter.h
+++ b/include/linux/perf_counter.h
@@ -115,27 +115,44 @@ enum perf_counter_sample_format {
PERF_SAMPLE_TID = 1U << 1,
PERF_SAMPLE_TIME = 1U << 2,
PERF_SAMPLE_ADDR = 1U << 3,
- PERF_SAMPLE_GROUP = 1U << 4,
+ PERF_SAMPLE_READ = 1U << 4,
PERF_SAMPLE_CALLCHAIN = 1U << 5,
PERF_SAMPLE_ID = 1U << 6,
PERF_SAMPLE_CPU = 1U << 7,
PERF_SAMPLE_PERIOD = 1U << 8,
PERF_SAMPLE_STREAM_ID = 1U << 9,
+ PERF_SAMPLE_RAW = 1U << 10,
- PERF_SAMPLE_MAX = 1U << 10, /* non-ABI */
+ PERF_SAMPLE_MAX = 1U << 11, /* non-ABI */
};
/*
- * Bits that can be set in attr.read_format to request that
- * reads on the counter should return the indicated quantities,
- * in increasing order of bit value, after the counter value.
+ * The format of the data returned by read() on a perf counter fd,
+ * as specified by attr.read_format:
+ *
+ * struct read_format {
+ * { u64 value;
+ * { u64 time_enabled; } && PERF_FORMAT_ENABLED
+ * { u64 time_running; } && PERF_FORMAT_RUNNING
+ * { u64 id; } && PERF_FORMAT_ID
+ * } && !PERF_FORMAT_GROUP
+ *
+ * { u64 nr;
+ * { u64 time_enabled; } && PERF_FORMAT_ENABLED
+ * { u64 time_running; } && PERF_FORMAT_RUNNING
+ * { u64 value;
+ * { u64 id; } && PERF_FORMAT_ID
+ * } cntr[nr];
+ * } && PERF_FORMAT_GROUP
+ * };
*/
enum perf_counter_read_format {
PERF_FORMAT_TOTAL_TIME_ENABLED = 1U << 0,
PERF_FORMAT_TOTAL_TIME_RUNNING = 1U << 1,
PERF_FORMAT_ID = 1U << 2,
+ PERF_FORMAT_GROUP = 1U << 3,
- PERF_FORMAT_MAX = 1U << 3, /* non-ABI */
+ PERF_FORMAT_MAX = 1U << 4, /* non-ABI */
};
#define PERF_ATTR_SIZE_VER0 64 /* sizeof first published struct */
@@ -342,10 +359,8 @@ enum perf_event_type {
* struct {
* struct perf_event_header header;
* u32 pid, tid;
- * u64 value;
- * { u64 time_enabled; } && PERF_FORMAT_ENABLED
- * { u64 time_running; } && PERF_FORMAT_RUNNING
- * { u64 parent_id; } && PERF_FORMAT_ID
+ *
+ * struct read_format values;
* };
*/
PERF_EVENT_READ = 8,
@@ -363,11 +378,24 @@ enum perf_event_type {
* { u32 cpu, res; } && PERF_SAMPLE_CPU
* { u64 period; } && PERF_SAMPLE_PERIOD
*
- * { u64 nr;
- * { u64 id, val; } cnt[nr]; } && PERF_SAMPLE_GROUP
+ * { struct read_format values; } && PERF_SAMPLE_READ
*
* { u64 nr,
* u64 ips[nr]; } && PERF_SAMPLE_CALLCHAIN
+ *
+ * #
+ * # The RAW record below is opaque data wrt the ABI
+ * #
+ * # That is, the ABI doesn't make any promises wrt to
+ * # the stability of its content, it may vary depending
+ * # on event, hardware, kernel version and phase of
+ * # the moon.
+ * #
+ * # In other words, PERF_SAMPLE_RAW contents are not an ABI.
+ * #
+ *
+ * { u32 size;
+ * char data[size];}&& PERF_SAMPLE_RAW
* };
*/
PERF_EVENT_SAMPLE = 9,
@@ -413,6 +441,11 @@ struct perf_callchain_entry {
__u64 ip[PERF_MAX_STACK_DEPTH];
};
+struct perf_raw_record {
+ u32 size;
+ void *data;
+};
+
struct task_struct;
/**
@@ -681,10 +714,13 @@ struct perf_sample_data {
struct pt_regs *regs;
u64 addr;
u64 period;
+ struct perf_raw_record *raw;
};
extern int perf_counter_overflow(struct perf_counter *counter, int nmi,
struct perf_sample_data *data);
+extern void perf_counter_output(struct perf_counter *counter, int nmi,
+ struct perf_sample_data *data);
/*
* Return 1 for a software counter, 0 for a hardware counter
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index b99c625fddfe..7da466ba4b0d 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -117,17 +117,15 @@ static inline __be32 *xdr_encode_array(__be32 *p, const void *s, unsigned int le
static inline __be32 *
xdr_encode_hyper(__be32 *p, __u64 val)
{
- *p++ = htonl(val >> 32);
- *p++ = htonl(val & 0xFFFFFFFF);
- return p;
+ *(__be64 *)p = cpu_to_be64(val);
+ return p + 2;
}
static inline __be32 *
xdr_decode_hyper(__be32 *p, __u64 *valp)
{
- *valp = ((__u64) ntohl(*p++)) << 32;
- *valp |= ntohl(*p++);
- return p;
+ *valp = be64_to_cpup((__be64 *)p);
+ return p + 2;
}
/*
diff --git a/include/linux/wait.h b/include/linux/wait.h
index 6788e1a4d4ca..cf3c2f5dba51 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -77,7 +77,14 @@ struct task_struct;
#define __WAIT_BIT_KEY_INITIALIZER(word, bit) \
{ .flags = word, .bit_nr = bit, }
-extern void init_waitqueue_head(wait_queue_head_t *q);
+extern void __init_waitqueue_head(wait_queue_head_t *q, struct lock_class_key *);
+
+#define init_waitqueue_head(q) \
+ do { \
+ static struct lock_class_key __key; \
+ \
+ __init_waitqueue_head((q), &__key); \
+ } while (0)
#ifdef CONFIG_LOCKDEP
# define __WAIT_QUEUE_HEAD_INIT_ONSTACK(name) \
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 1867553c61e5..f64fbaae781a 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -144,6 +144,9 @@
#undef TP_fast_assign
#define TP_fast_assign(args...) args
+#undef TP_perf_assign
+#define TP_perf_assign(args...)
+
#undef TRACE_EVENT
#define TRACE_EVENT(call, proto, args, tstruct, func, print) \
static int \
@@ -345,6 +348,56 @@ static inline int ftrace_get_offsets_##call( \
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+#ifdef CONFIG_EVENT_PROFILE
+
+/*
+ * Generate the functions needed for tracepoint perf_counter support.
+ *
+ * NOTE: The insertion profile callback (ftrace_profile_<call>) is defined later
+ *
+ * static int ftrace_profile_enable_<call>(struct ftrace_event_call *event_call)
+ * {
+ * int ret = 0;
+ *
+ * if (!atomic_inc_return(&event_call->profile_count))
+ * ret = register_trace_<call>(ftrace_profile_<call>);
+ *
+ * return ret;
+ * }
+ *
+ * static void ftrace_profile_disable_<call>(struct ftrace_event_call *event_call)
+ * {
+ * if (atomic_add_negative(-1, &event->call->profile_count))
+ * unregister_trace_<call>(ftrace_profile_<call>);
+ * }
+ *
+ */
+
+#undef TRACE_EVENT
+#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
+ \
+static void ftrace_profile_##call(proto); \
+ \
+static int ftrace_profile_enable_##call(struct ftrace_event_call *event_call) \
+{ \
+ int ret = 0; \
+ \
+ if (!atomic_inc_return(&event_call->profile_count)) \
+ ret = register_trace_##call(ftrace_profile_##call); \
+ \
+ return ret; \
+} \
+ \
+static void ftrace_profile_disable_##call(struct ftrace_event_call *event_call)\
+{ \
+ if (atomic_add_negative(-1, &event_call->profile_count)) \
+ unregister_trace_##call(ftrace_profile_##call); \
+}
+
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+
+#endif
+
/*
* Stage 4 of the trace events.
*
@@ -447,28 +500,6 @@ static inline int ftrace_get_offsets_##call( \
#define TP_FMT(fmt, args...) fmt "\n", ##args
#ifdef CONFIG_EVENT_PROFILE
-#define _TRACE_PROFILE(call, proto, args) \
-static void ftrace_profile_##call(proto) \
-{ \
- extern void perf_tpcounter_event(int); \
- perf_tpcounter_event(event_##call.id); \
-} \
- \
-static int ftrace_profile_enable_##call(struct ftrace_event_call *event_call) \
-{ \
- int ret = 0; \
- \
- if (!atomic_inc_return(&event_call->profile_count)) \
- ret = register_trace_##call(ftrace_profile_##call); \
- \
- return ret; \
-} \
- \
-static void ftrace_profile_disable_##call(struct ftrace_event_call *event_call)\
-{ \
- if (atomic_add_negative(-1, &event_call->profile_count)) \
- unregister_trace_##call(ftrace_profile_##call); \
-}
#define _TRACE_PROFILE_INIT(call) \
.profile_count = ATOMIC_INIT(-1), \
@@ -476,7 +507,6 @@ static void ftrace_profile_disable_##call(struct ftrace_event_call *event_call)\
.profile_disable = ftrace_profile_disable_##call,
#else
-#define _TRACE_PROFILE(call, proto, args)
#define _TRACE_PROFILE_INIT(call)
#endif
@@ -502,7 +532,6 @@ static void ftrace_profile_disable_##call(struct ftrace_event_call *event_call)\
#undef TRACE_EVENT
#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
-_TRACE_PROFILE(call, PARAMS(proto), PARAMS(args)) \
\
static struct ftrace_event_call event_##call; \
\
@@ -586,6 +615,110 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-#undef _TRACE_PROFILE
+/*
+ * Define the insertion callback to profile events
+ *
+ * The job is very similar to ftrace_raw_event_<call> except that we don't
+ * insert in the ring buffer but in a perf counter.
+ *
+ * static void ftrace_profile_<call>(proto)
+ * {
+ * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets;
+ * struct ftrace_event_call *event_call = &event_<call>;
+ * extern void perf_tpcounter_event(int, u64, u64, void *, int);
+ * struct ftrace_raw_##call *entry;
+ * u64 __addr = 0, __count = 1;
+ * unsigned long irq_flags;
+ * int __entry_size;
+ * int __data_size;
+ * int pc;
+ *
+ * local_save_flags(irq_flags);
+ * pc = preempt_count();
+ *
+ * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args);
+ *
+ * // Below we want to get the aligned size by taking into account
+ * // the u32 field that will later store the buffer size
+ * __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),
+ * sizeof(u64));
+ * __entry_size -= sizeof(u32);
+ *
+ * do {
+ * char raw_data[__entry_size]; <- allocate our sample in the stack
+ * struct trace_entry *ent;
+ *
+ * zero dead bytes from alignment to avoid stack leak to userspace:
+ *
+ * *(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL;
+ * entry = (struct ftrace_raw_<call> *)raw_data;
+ * ent = &entry->ent;
+ * tracing_generic_entry_update(ent, irq_flags, pc);
+ * ent->type = event_call->id;
+ *
+ * <tstruct> <- do some jobs with dynamic arrays
+ *
+ * <assign> <- affect our values
+ *
+ * perf_tpcounter_event(event_call->id, __addr, __count, entry,
+ * __entry_size); <- submit them to perf counter
+ * } while (0);
+ *
+ * }
+ */
+
+#ifdef CONFIG_EVENT_PROFILE
+
+#undef __perf_addr
+#define __perf_addr(a) __addr = (a)
+
+#undef __perf_count
+#define __perf_count(c) __count = (c)
+
+#undef TRACE_EVENT
+#define TRACE_EVENT(call, proto, args, tstruct, assign, print) \
+static void ftrace_profile_##call(proto) \
+{ \
+ struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
+ struct ftrace_event_call *event_call = &event_##call; \
+ extern void perf_tpcounter_event(int, u64, u64, void *, int); \
+ struct ftrace_raw_##call *entry; \
+ u64 __addr = 0, __count = 1; \
+ unsigned long irq_flags; \
+ int __entry_size; \
+ int __data_size; \
+ int pc; \
+ \
+ local_save_flags(irq_flags); \
+ pc = preempt_count(); \
+ \
+ __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
+ __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\
+ sizeof(u64)); \
+ __entry_size -= sizeof(u32); \
+ \
+ do { \
+ char raw_data[__entry_size]; \
+ struct trace_entry *ent; \
+ \
+ *(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL; \
+ entry = (struct ftrace_raw_##call *)raw_data; \
+ ent = &entry->ent; \
+ tracing_generic_entry_update(ent, irq_flags, pc); \
+ ent->type = event_call->id; \
+ \
+ tstruct \
+ \
+ { assign; } \
+ \
+ perf_tpcounter_event(event_call->id, __addr, __count, entry,\
+ __entry_size); \
+ } while (0); \
+ \
+}
+
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+#endif /* CONFIG_EVENT_PROFILE */
+
#undef _TRACE_PROFILE_INIT
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 16:38:04 +0100