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authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-06 13:30:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-06 13:30:00 -0700
commit12fe32e4f942ac5c71a4ab70b039fee65c0dc29d (patch)
treeb0878e49e9fab1fd154fde1dd57057391831b668 /include
parenta63856252d2112e7c452696037a86ceb12f47f80 (diff)
parent2121db74ba0fd2259f0e2265511684fadda9ac49 (diff)
Merge branch 'kmemtrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'kmemtrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: kmemtrace: trace kfree() calls with NULL or zero-length objects kmemtrace: small cleanups kmemtrace: restore original tracing data binary format, improve ABI kmemtrace: kmemtrace_alloc() must fill type_id kmemtrace: use tracepoints kmemtrace, rcu: don't include unnecessary headers, allow kmemtrace w/ tracepoints kmemtrace, rcu: fix rcupreempt.c data structure dependencies kmemtrace, rcu: fix rcu_tree_trace.c data structure dependencies kmemtrace, rcu: fix linux/rcutree.h and linux/rcuclassic.h dependencies kmemtrace, mm: fix slab.h dependency problem in mm/failslab.c kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_unlzma.c kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_bunzip2.c kmemtrace, kbuild: fix slab.h dependency problem in lib/decompress_inflate.c kmemtrace, squashfs: fix slab.h dependency problem in squasfs kmemtrace, befs: fix slab.h dependency problem kmemtrace, security: fix linux/key.h header file dependencies kmemtrace, fs: fix linux/fdtable.h header file dependencies kmemtrace, fs: uninline simple_transaction_set() kmemtrace, fs, security: move alloc_secdata() and free_secdata() to linux/security.h
Diffstat (limited to 'include')
-rw-r--r--include/linux/fdtable.h4
-rw-r--r--include/linux/fs.h35
-rw-r--r--include/linux/key.h1
-rw-r--r--include/linux/rcuclassic.h16
-rw-r--r--include/linux/rcupdate.h1
-rw-r--r--include/linux/rcupreempt.h53
-rw-r--r--include/linux/rcutree.h27
-rw-r--r--include/linux/security.h24
-rw-r--r--include/linux/slab_def.h10
-rw-r--r--include/linux/slub_def.h12
-rw-r--r--include/trace/kmemtrace.h92
11 files changed, 92 insertions, 183 deletions
diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h
index 09d6c5bbddd..a2ec74bc481 100644
--- a/include/linux/fdtable.h
+++ b/include/linux/fdtable.h
@@ -5,12 +5,14 @@
#ifndef __LINUX_FDTABLE_H
#define __LINUX_FDTABLE_H
-#include <asm/atomic.h>
#include <linux/posix_types.h>
#include <linux/compiler.h>
#include <linux/spinlock.h>
#include <linux/rcupdate.h>
#include <linux/types.h>
+#include <linux/init.h>
+
+#include <asm/atomic.h>
/*
* The default fd array needs to be at least BITS_PER_LONG,
diff --git a/include/linux/fs.h b/include/linux/fs.h
index cae5720f431..bce40a2207e 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2341,19 +2341,7 @@ ssize_t simple_transaction_read(struct file *file, char __user *buf,
size_t size, loff_t *pos);
int simple_transaction_release(struct inode *inode, struct file *file);
-static inline void simple_transaction_set(struct file *file, size_t n)
-{
- struct simple_transaction_argresp *ar = file->private_data;
-
- BUG_ON(n > SIMPLE_TRANSACTION_LIMIT);
-
- /*
- * The barrier ensures that ar->size will really remain zero until
- * ar->data is ready for reading.
- */
- smp_mb();
- ar->size = n;
-}
+void simple_transaction_set(struct file *file, size_t n);
/*
* simple attribute files
@@ -2400,27 +2388,6 @@ ssize_t simple_attr_read(struct file *file, char __user *buf,
ssize_t simple_attr_write(struct file *file, const char __user *buf,
size_t len, loff_t *ppos);
-
-#ifdef CONFIG_SECURITY
-static inline char *alloc_secdata(void)
-{
- return (char *)get_zeroed_page(GFP_KERNEL);
-}
-
-static inline void free_secdata(void *secdata)
-{
- free_page((unsigned long)secdata);
-}
-#else
-static inline char *alloc_secdata(void)
-{
- return (char *)1;
-}
-
-static inline void free_secdata(void *secdata)
-{ }
-#endif /* CONFIG_SECURITY */
-
struct ctl_table;
int proc_nr_files(struct ctl_table *table, int write, struct file *filp,
void __user *buffer, size_t *lenp, loff_t *ppos);
diff --git a/include/linux/key.h b/include/linux/key.h
index 21d32a142c0..e544f466d69 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -20,6 +20,7 @@
#include <linux/rbtree.h>
#include <linux/rcupdate.h>
#include <linux/sysctl.h>
+#include <linux/rwsem.h>
#include <asm/atomic.h>
#ifdef __KERNEL__
diff --git a/include/linux/rcuclassic.h b/include/linux/rcuclassic.h
index 80044a4f3ab..bfd92e1e5d2 100644
--- a/include/linux/rcuclassic.h
+++ b/include/linux/rcuclassic.h
@@ -36,7 +36,6 @@
#include <linux/cache.h>
#include <linux/spinlock.h>
#include <linux/threads.h>
-#include <linux/percpu.h>
#include <linux/cpumask.h>
#include <linux/seqlock.h>
@@ -108,25 +107,14 @@ struct rcu_data {
struct rcu_head barrier;
};
-DECLARE_PER_CPU(struct rcu_data, rcu_data);
-DECLARE_PER_CPU(struct rcu_data, rcu_bh_data);
-
/*
* Increment the quiescent state counter.
* The counter is a bit degenerated: We do not need to know
* how many quiescent states passed, just if there was at least
* one since the start of the grace period. Thus just a flag.
*/
-static inline void rcu_qsctr_inc(int cpu)
-{
- struct rcu_data *rdp = &per_cpu(rcu_data, cpu);
- rdp->passed_quiesc = 1;
-}
-static inline void rcu_bh_qsctr_inc(int cpu)
-{
- struct rcu_data *rdp = &per_cpu(rcu_bh_data, cpu);
- rdp->passed_quiesc = 1;
-}
+extern void rcu_qsctr_inc(int cpu);
+extern void rcu_bh_qsctr_inc(int cpu);
extern int rcu_pending(int cpu);
extern int rcu_needs_cpu(int cpu);
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 528343e6da5..15fbb3ca634 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -36,7 +36,6 @@
#include <linux/cache.h>
#include <linux/spinlock.h>
#include <linux/threads.h>
-#include <linux/percpu.h>
#include <linux/cpumask.h>
#include <linux/seqlock.h>
#include <linux/lockdep.h>
diff --git a/include/linux/rcupreempt.h b/include/linux/rcupreempt.h
index 74304b4538d..fce522782ff 100644
--- a/include/linux/rcupreempt.h
+++ b/include/linux/rcupreempt.h
@@ -36,34 +36,19 @@
#include <linux/cache.h>
#include <linux/spinlock.h>
#include <linux/threads.h>
-#include <linux/percpu.h>
+#include <linux/smp.h>
#include <linux/cpumask.h>
#include <linux/seqlock.h>
-struct rcu_dyntick_sched {
- int dynticks;
- int dynticks_snap;
- int sched_qs;
- int sched_qs_snap;
- int sched_dynticks_snap;
-};
-
-DECLARE_PER_CPU(struct rcu_dyntick_sched, rcu_dyntick_sched);
-
-static inline void rcu_qsctr_inc(int cpu)
-{
- struct rcu_dyntick_sched *rdssp = &per_cpu(rcu_dyntick_sched, cpu);
-
- rdssp->sched_qs++;
-}
-#define rcu_bh_qsctr_inc(cpu)
+extern void rcu_qsctr_inc(int cpu);
+static inline void rcu_bh_qsctr_inc(int cpu) { }
/*
* Someone might want to pass call_rcu_bh as a function pointer.
* So this needs to just be a rename and not a macro function.
* (no parentheses)
*/
-#define call_rcu_bh call_rcu
+#define call_rcu_bh call_rcu
/**
* call_rcu_sched - Queue RCU callback for invocation after sched grace period.
@@ -117,30 +102,12 @@ extern struct rcupreempt_trace *rcupreempt_trace_cpu(int cpu);
struct softirq_action;
#ifdef CONFIG_NO_HZ
-
-static inline void rcu_enter_nohz(void)
-{
- static DEFINE_RATELIMIT_STATE(rs, 10 * HZ, 1);
-
- smp_mb(); /* CPUs seeing ++ must see prior RCU read-side crit sects */
- __get_cpu_var(rcu_dyntick_sched).dynticks++;
- WARN_ON_RATELIMIT(__get_cpu_var(rcu_dyntick_sched).dynticks & 0x1, &rs);
-}
-
-static inline void rcu_exit_nohz(void)
-{
- static DEFINE_RATELIMIT_STATE(rs, 10 * HZ, 1);
-
- __get_cpu_var(rcu_dyntick_sched).dynticks++;
- smp_mb(); /* CPUs seeing ++ must see later RCU read-side crit sects */
- WARN_ON_RATELIMIT(!(__get_cpu_var(rcu_dyntick_sched).dynticks & 0x1),
- &rs);
-}
-
-#else /* CONFIG_NO_HZ */
-#define rcu_enter_nohz() do { } while (0)
-#define rcu_exit_nohz() do { } while (0)
-#endif /* CONFIG_NO_HZ */
+extern void rcu_enter_nohz(void);
+extern void rcu_exit_nohz(void);
+#else
+# define rcu_enter_nohz() do { } while (0)
+# define rcu_exit_nohz() do { } while (0)
+#endif
/*
* A context switch is a grace period for rcupreempt synchronize_rcu()
diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index a722fb67bb2..0cdda00f2b2 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -33,7 +33,6 @@
#include <linux/cache.h>
#include <linux/spinlock.h>
#include <linux/threads.h>
-#include <linux/percpu.h>
#include <linux/cpumask.h>
#include <linux/seqlock.h>
@@ -236,30 +235,8 @@ struct rcu_state {
#endif /* #ifdef CONFIG_NO_HZ */
};
-extern struct rcu_state rcu_state;
-DECLARE_PER_CPU(struct rcu_data, rcu_data);
-
-extern struct rcu_state rcu_bh_state;
-DECLARE_PER_CPU(struct rcu_data, rcu_bh_data);
-
-/*
- * Increment the quiescent state counter.
- * The counter is a bit degenerated: We do not need to know
- * how many quiescent states passed, just if there was at least
- * one since the start of the grace period. Thus just a flag.
- */
-static inline void rcu_qsctr_inc(int cpu)
-{
- struct rcu_data *rdp = &per_cpu(rcu_data, cpu);
- rdp->passed_quiesc = 1;
- rdp->passed_quiesc_completed = rdp->completed;
-}
-static inline void rcu_bh_qsctr_inc(int cpu)
-{
- struct rcu_data *rdp = &per_cpu(rcu_bh_data, cpu);
- rdp->passed_quiesc = 1;
- rdp->passed_quiesc_completed = rdp->completed;
-}
+extern void rcu_qsctr_inc(int cpu);
+extern void rcu_bh_qsctr_inc(int cpu);
extern int rcu_pending(int cpu);
extern int rcu_needs_cpu(int cpu);
diff --git a/include/linux/security.h b/include/linux/security.h
index 54ed15799a8..d5fd6163606 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -32,6 +32,7 @@
#include <linux/sched.h>
#include <linux/key.h>
#include <linux/xfrm.h>
+#include <linux/gfp.h>
#include <net/flow.h>
/* Maximum number of letters for an LSM name string */
@@ -2953,5 +2954,28 @@ static inline void securityfs_remove(struct dentry *dentry)
#endif
+#ifdef CONFIG_SECURITY
+
+static inline char *alloc_secdata(void)
+{
+ return (char *)get_zeroed_page(GFP_KERNEL);
+}
+
+static inline void free_secdata(void *secdata)
+{
+ free_page((unsigned long)secdata);
+}
+
+#else
+
+static inline char *alloc_secdata(void)
+{
+ return (char *)1;
+}
+
+static inline void free_secdata(void *secdata)
+{ }
+#endif /* CONFIG_SECURITY */
+
#endif /* ! __LINUX_SECURITY_H */
diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index f4523651fa4..5ac9b0bcaf9 100644
--- a/include/linux/slab_def.h
+++ b/include/linux/slab_def.h
@@ -73,8 +73,8 @@ found:
ret = kmem_cache_alloc_notrace(cachep, flags);
- kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC, _THIS_IP_, ret,
- size, slab_buffer_size(cachep), flags);
+ trace_kmalloc(_THIS_IP_, ret,
+ size, slab_buffer_size(cachep), flags);
return ret;
}
@@ -128,9 +128,9 @@ found:
ret = kmem_cache_alloc_node_notrace(cachep, flags, node);
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC, _THIS_IP_,
- ret, size, slab_buffer_size(cachep),
- flags, node);
+ trace_kmalloc_node(_THIS_IP_, ret,
+ size, slab_buffer_size(cachep),
+ flags, node);
return ret;
}
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index a1f90528e70..5046f90c117 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -233,8 +233,7 @@ static __always_inline void *kmalloc_large(size_t size, gfp_t flags)
unsigned int order = get_order(size);
void *ret = (void *) __get_free_pages(flags | __GFP_COMP, order);
- kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC, _THIS_IP_, ret,
- size, PAGE_SIZE << order, flags);
+ trace_kmalloc(_THIS_IP_, ret, size, PAGE_SIZE << order, flags);
return ret;
}
@@ -255,9 +254,7 @@ static __always_inline void *kmalloc(size_t size, gfp_t flags)
ret = kmem_cache_alloc_notrace(s, flags);
- kmemtrace_mark_alloc(KMEMTRACE_TYPE_KMALLOC,
- _THIS_IP_, ret,
- size, s->size, flags);
+ trace_kmalloc(_THIS_IP_, ret, size, s->size, flags);
return ret;
}
@@ -296,9 +293,8 @@ static __always_inline void *kmalloc_node(size_t size, gfp_t flags, int node)
ret = kmem_cache_alloc_node_notrace(s, flags, node);
- kmemtrace_mark_alloc_node(KMEMTRACE_TYPE_KMALLOC,
- _THIS_IP_, ret,
- size, s->size, flags, node);
+ trace_kmalloc_node(_THIS_IP_, ret,
+ size, s->size, flags, node);
return ret;
}
diff --git a/include/trace/kmemtrace.h b/include/trace/kmemtrace.h
index ad8b7857855..28ee69f9cd4 100644
--- a/include/trace/kmemtrace.h
+++ b/include/trace/kmemtrace.h
@@ -9,65 +9,53 @@
#ifdef __KERNEL__
+#include <linux/tracepoint.h>
#include <linux/types.h>
-#include <linux/marker.h>
-
-enum kmemtrace_type_id {
- KMEMTRACE_TYPE_KMALLOC = 0, /* kmalloc() or kfree(). */
- KMEMTRACE_TYPE_CACHE, /* kmem_cache_*(). */
- KMEMTRACE_TYPE_PAGES, /* __get_free_pages() and friends. */
-};
#ifdef CONFIG_KMEMTRACE
-
extern void kmemtrace_init(void);
-
-extern void kmemtrace_mark_alloc_node(enum kmemtrace_type_id type_id,
- unsigned long call_site,
- const void *ptr,
- size_t bytes_req,
- size_t bytes_alloc,
- gfp_t gfp_flags,
- int node);
-
-extern void kmemtrace_mark_free(enum kmemtrace_type_id type_id,
- unsigned long call_site,
- const void *ptr);
-
-#else /* CONFIG_KMEMTRACE */
-
+#else
static inline void kmemtrace_init(void)
{
}
-
-static inline void kmemtrace_mark_alloc_node(enum kmemtrace_type_id type_id,
- unsigned long call_site,
- const void *ptr,
- size_t bytes_req,
- size_t bytes_alloc,
- gfp_t gfp_flags,
- int node)
-{
-}
-
-static inline void kmemtrace_mark_free(enum kmemtrace_type_id type_id,
- unsigned long call_site,
- const void *ptr)
-{
-}
-
-#endif /* CONFIG_KMEMTRACE */
-
-static inline void kmemtrace_mark_alloc(enum kmemtrace_type_id type_id,
- unsigned long call_site,
- const void *ptr,
- size_t bytes_req,
- size_t bytes_alloc,
- gfp_t gfp_flags)
-{
- kmemtrace_mark_alloc_node(type_id, call_site, ptr,
- bytes_req, bytes_alloc, gfp_flags, -1);
-}
+#endif
+
+DECLARE_TRACE(kmalloc,
+ TP_PROTO(unsigned long call_site,
+ const void *ptr,
+ size_t bytes_req,
+ size_t bytes_alloc,
+ gfp_t gfp_flags),
+ TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags));
+DECLARE_TRACE(kmem_cache_alloc,
+ TP_PROTO(unsigned long call_site,
+ const void *ptr,
+ size_t bytes_req,
+ size_t bytes_alloc,
+ gfp_t gfp_flags),
+ TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags));
+DECLARE_TRACE(kmalloc_node,
+ TP_PROTO(unsigned long call_site,
+ const void *ptr,
+ size_t bytes_req,
+ size_t bytes_alloc,
+ gfp_t gfp_flags,
+ int node),
+ TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags, node));
+DECLARE_TRACE(kmem_cache_alloc_node,
+ TP_PROTO(unsigned long call_site,
+ const void *ptr,
+ size_t bytes_req,
+ size_t bytes_alloc,
+ gfp_t gfp_flags,
+ int node),
+ TP_ARGS(call_site, ptr, bytes_req, bytes_alloc, gfp_flags, node));
+DECLARE_TRACE(kfree,
+ TP_PROTO(unsigned long call_site, const void *ptr),
+ TP_ARGS(call_site, ptr));
+DECLARE_TRACE(kmem_cache_free,
+ TP_PROTO(unsigned long call_site, const void *ptr),
+ TP_ARGS(call_site, ptr));
#endif /* __KERNEL__ */