dlan17/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge branch 'kmemtrace-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

Browse Source 
* '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
This commit is contained in:
Linus Torvalds
2009-04-06 13:30:00 -07:00
parent a63856252d 2121db74ba
commit 12fe32e4f9
29 changed files with 494 additions and 337 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/linux/fdtable.h
+3 -1
View File
@@ -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,
include/linux/fs.h
+1 -34
View File
@@ -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);
include/linux/key.h
+1
View File
@@ -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__
include/linux/rcuclassic.h
+2 -14
View File
@@ -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);
include/linux/rcupdate.h
-1
View File
@@ -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>
include/linux/rcupreempt.h
+10 -43
View File
@@ -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()
include/linux/rcutree.h
+2 -25
View File
@@ -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);
include/linux/security.h
+24
View File
@@ -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 */
include/linux/slab_def.h
+5 -5
View File
@@ -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;
}
include/linux/slub_def.h
+4 -8
View File
@@ -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;
}
include/trace/kmemtrace.h
+39 -51
View File
@@ -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)
{
}
#endif
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);
}
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__ */