Reviewed-by: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
drivers/staging/ramster/Makefile | 1 +
drivers/staging/ramster/debug.c | 113 +++++++++++++++
drivers/staging/ramster/debug.h | 183 ++++++++++++++++++++++++
drivers/staging/ramster/zcache-main.c | 247 +--------------------------------
4 files changed, 304 insertions(+), 240 deletions(-)
create mode 100644 drivers/staging/ramster/debug.c
create mode 100644 drivers/staging/ramster/debug.h
diff --git a/drivers/staging/ramster/Makefile b/drivers/staging/ramster/Makefile
index fcb25cb..61f5050 100644
--- a/drivers/staging/ramster/Makefile
+++ b/drivers/staging/ramster/Makefile
@@ -4,4 +4,5 @@ zcache-y += ramster/ramster.o ramster/r2net.o
zcache-y += ramster/nodemanager.o ramster/tcp.o
zcache-y += ramster/heartbeat.o ramster/masklog.o
endif
+zcache-y-$(CONFIG_ZCACHE_DEBUG) += debug.o
obj-$(CONFIG_MODULES) += zcache.o
diff --git a/drivers/staging/ramster/debug.c b/drivers/staging/ramster/debug.c
new file mode 100644
index 0000000..0d19715
--- /dev/null
+++ b/drivers/staging/ramster/debug.c
@@ -0,0 +1,113 @@
+#include <linux/atomic.h>
+#include "debug.h"
+
+#ifdef CONFIG_DEBUG_FS
+#include <linux/debugfs.h>
+#define zdfs debugfs_create_size_t
+#define zdfs64 debugfs_create_u64
+int zcache_debugfs_init(void)
+{
+ struct dentry *root = debugfs_create_dir("zcache", NULL);
+ if (root == NULL)
+ return -ENXIO;
+
+ zdfs("obj_count", S_IRUGO, root, &zcache_obj_count);
+ zdfs("obj_count_max", S_IRUGO, root, &zcache_obj_count_max);
+ zdfs("objnode_count", S_IRUGO, root, &zcache_objnode_count);
+ zdfs("objnode_count_max", S_IRUGO, root, &zcache_objnode_count_max);
+ zdfs("flush_total", S_IRUGO, root, &zcache_flush_total);
+ zdfs("flush_found", S_IRUGO, root, &zcache_flush_found);
+ zdfs("flobj_total", S_IRUGO, root, &zcache_flobj_total);
+ zdfs("flobj_found", S_IRUGO, root, &zcache_flobj_found);
+ zdfs("failed_eph_puts", S_IRUGO, root, &zcache_failed_eph_puts);
+ zdfs("failed_pers_puts", S_IRUGO, root, &zcache_failed_pers_puts);
+ zdfs("failed_get_free_pages", S_IRUGO, root,
+ &zcache_failed_getfreepages);
+ zdfs("failed_alloc", S_IRUGO, root, &zcache_failed_alloc);
+ zdfs("put_to_flush", S_IRUGO, root, &zcache_put_to_flush);
+ zdfs("compress_poor", S_IRUGO, root, &zcache_compress_poor);
+ zdfs("mean_compress_poor", S_IRUGO, root, &zcache_mean_compress_poor);
+ zdfs("eph_ate_tail", S_IRUGO, root, &zcache_eph_ate_tail);
+ zdfs("eph_ate_tail_failed", S_IRUGO, root, &zcache_eph_ate_tail_failed);
+ zdfs("pers_ate_eph", S_IRUGO, root, &zcache_pers_ate_eph);
+ zdfs("pers_ate_eph_failed", S_IRUGO, root, &zcache_pers_ate_eph_failed);
+ zdfs("evicted_eph_zpages", S_IRUGO, root, &zcache_evicted_eph_zpages);
+ zdfs("evicted_eph_pageframes", S_IRUGO, root,
+ &zcache_evicted_eph_pageframes);
+ zdfs("eph_pageframes", S_IRUGO, root, &zcache_eph_pageframes);
+ zdfs("eph_pageframes_max", S_IRUGO, root, &zcache_eph_pageframes_max);
+ zdfs("pers_pageframes", S_IRUGO, root, &zcache_pers_pageframes);
+ zdfs("pers_pageframes_max", S_IRUGO, root, &zcache_pers_pageframes_max);
+ zdfs("eph_zpages", S_IRUGO, root, &zcache_eph_zpages);
+ zdfs("eph_zpages_max", S_IRUGO, root, &zcache_eph_zpages_max);
+ zdfs("pers_zpages", S_IRUGO, root, &zcache_pers_zpages);
+ zdfs("pers_zpages_max", S_IRUGO, root, &zcache_pers_zpages_max);
+ zdfs("last_active_file_pageframes", S_IRUGO, root,
+ &zcache_last_active_file_pageframes);
+ zdfs("last_inactive_file_pageframes", S_IRUGO, root,
+ &zcache_last_inactive_file_pageframes);
+ zdfs("last_active_anon_pageframes", S_IRUGO, root,
+ &zcache_last_active_anon_pageframes);
+ zdfs("last_inactive_anon_pageframes", S_IRUGO, root,
+ &zcache_last_inactive_anon_pageframes);
+ zdfs("eph_nonactive_puts_ignored", S_IRUGO, root,
+ &zcache_eph_nonactive_puts_ignored);
+ zdfs("pers_nonactive_puts_ignored", S_IRUGO, root,
+ &zcache_pers_nonactive_puts_ignored);
+ zdfs64("eph_zbytes", S_IRUGO, root, &zcache_eph_zbytes);
+ zdfs64("eph_zbytes_max", S_IRUGO, root, &zcache_eph_zbytes_max);
+ zdfs64("pers_zbytes", S_IRUGO, root, &zcache_pers_zbytes);
+ zdfs64("pers_zbytes_max", S_IRUGO, root, &zcache_pers_zbytes_max);
+ return 0;
+}
+#undef zdebugfs
+#undef zdfs64
+
+/* developers can call this in case of ooms, e.g. to find memory leaks */
+void zcache_dump(void)
+{
+ pr_debug("zcache: obj_count=%u\n", zcache_obj_count);
+ pr_debug("zcache: obj_count_max=%u\n", zcache_obj_count_max);
+ pr_debug("zcache: objnode_count=%u\n", zcache_objnode_count);
+ pr_debug("zcache: objnode_count_max=%u\n", zcache_objnode_count_max);
+ pr_debug("zcache: flush_total=%u\n", zcache_flush_total);
+ pr_debug("zcache: flush_found=%u\n", zcache_flush_found);
+ pr_debug("zcache: flobj_total=%u\n", zcache_flobj_total);
+ pr_debug("zcache: flobj_found=%u\n", zcache_flobj_found);
+ pr_debug("zcache: failed_eph_puts=%u\n", zcache_failed_eph_puts);
+ pr_debug("zcache: failed_pers_puts=%u\n", zcache_failed_pers_puts);
+ pr_debug("zcache: failed_get_free_pages=%u\n",
+ zcache_failed_getfreepages);
+ pr_debug("zcache: failed_alloc=%u\n", zcache_failed_alloc);
+ pr_debug("zcache: put_to_flush=%u\n", zcache_put_to_flush);
+ pr_debug("zcache: compress_poor=%u\n", zcache_compress_poor);
+ pr_debug("zcache: mean_compress_poor=%u\n",
+ zcache_mean_compress_poor);
+ pr_debug("zcache: eph_ate_tail=%u\n", zcache_eph_ate_tail);
+ pr_debug("zcache: eph_ate_tail_failed=%u\n",
+ zcache_eph_ate_tail_failed);
+ pr_debug("zcache: pers_ate_eph=%u\n", zcache_pers_ate_eph);
+ pr_debug("zcache: pers_ate_eph_failed=%u\n",
+ zcache_pers_ate_eph_failed);
+ pr_debug("zcache: evicted_eph_zpages=%u\n", zcache_evicted_eph_zpages);
+ pr_debug("zcache: evicted_eph_pageframes=%u\n",
+ zcache_evicted_eph_pageframes);
+ pr_debug("zcache: eph_pageframes=%u\n", zcache_eph_pageframes);
+ pr_debug("zcache: eph_pageframes_max=%u\n", zcache_eph_pageframes_max);
+ pr_debug("zcache: pers_pageframes=%u\n", zcache_pers_pageframes);
+ pr_debug("zcache: pers_pageframes_max=%u\n",
+ zcache_pers_pageframes_max);
+ pr_debug("zcache: eph_zpages=%u\n", zcache_eph_zpages);
+ pr_debug("zcache: eph_zpages_max=%u\n", zcache_eph_zpages_max);
+ pr_debug("zcache: pers_zpages=%u\n", zcache_pers_zpages);
+ pr_debug("zcache: pers_zpages_max=%u\n", zcache_pers_zpages_max);
+ pr_debug("zcache: eph_zbytes=%llu\n",
+ (unsigned long long)zcache_eph_zbytes);
+ pr_debug("zcache: eph_zbytes_max=%llu\n",
+ (unsigned long long)zcache_eph_zbytes_max);
+ pr_debug("zcache: pers_zbytes=%llu\n",
+ (unsigned long long)zcache_pers_zbytes);
+ pr_debug("zcache: pers_zbytes_max=%llu\n",
+ (unsigned long long)zcache_pers_zbytes_max);
+}
+#endif
diff --git a/drivers/staging/ramster/debug.h b/drivers/staging/ramster/debug.h
new file mode 100644
index 0000000..496735b
--- /dev/null
+++ b/drivers/staging/ramster/debug.h
@@ -0,0 +1,183 @@
+#ifdef CONFIG_ZCACHE_DEBUG
+
+/* we try to keep these statistics SMP-consistent */
+static ssize_t zcache_obj_count;
+static atomic_t zcache_obj_atomic = ATOMIC_INIT(0);
+static ssize_t zcache_obj_count_max;
+static inline void inc_zcache_obj_count(void)
+{
+ zcache_obj_count = atomic_inc_return(&zcache_obj_atomic);
+ if (zcache_obj_count > zcache_obj_count_max)
+ zcache_obj_count_max = zcache_obj_count;
+}
+static inline void dec_zcache_obj_count(void)
+{
+ zcache_obj_count = atomic_dec_return(&zcache_obj_atomic);
+ BUG_ON(zcache_obj_count < 0);
+};
+static ssize_t zcache_objnode_count;
+static atomic_t zcache_objnode_atomic = ATOMIC_INIT(0);
+static ssize_t zcache_objnode_count_max;
+static inline void inc_zcache_objnode_count(void)
+{
+ zcache_objnode_count = atomic_inc_return(&zcache_objnode_atomic);
+ if (zcache_objnode_count > zcache_objnode_count_max)
+ zcache_objnode_count_max = zcache_objnode_count;
+};
+static inline void dec_zcache_objnode_count(void)
+{
+ zcache_objnode_count = atomic_dec_return(&zcache_objnode_atomic);
+ BUG_ON(zcache_objnode_count < 0);
+};
+static u64 zcache_eph_zbytes;
+static atomic_long_t zcache_eph_zbytes_atomic = ATOMIC_INIT(0);
+static u64 zcache_eph_zbytes_max;
+static inline void inc_zcache_eph_zbytes(unsigned clen)
+{
+ zcache_eph_zbytes = atomic_long_add_return(clen, &zcache_eph_zbytes_atomic);
+ if (zcache_eph_zbytes > zcache_eph_zbytes_max)
+ zcache_eph_zbytes_max = zcache_eph_zbytes;
+};
+static inline void dec_zcache_eph_zbytes(unsigned zsize)
+{
+ zcache_eph_zbytes = atomic_long_sub_return(zsize, &zcache_eph_zbytes_atomic);
+};
+extern u64 zcache_pers_zbytes;
+static atomic_long_t zcache_pers_zbytes_atomic = ATOMIC_INIT(0);
+static u64 zcache_pers_zbytes_max;
+static inline void inc_zcache_pers_zbytes(unsigned clen)
+{
+ zcache_pers_zbytes = atomic_long_add_return(clen, &zcache_pers_zbytes_atomic);
+ if (zcache_pers_zbytes > zcache_pers_zbytes_max)
+ zcache_pers_zbytes_max = zcache_pers_zbytes;
+}
+static inline void dec_zcache_pers_zbytes(unsigned zsize)
+{
+ zcache_pers_zbytes = atomic_long_sub_return(zsize, &zcache_pers_zbytes_atomic);
+}
+extern ssize_t zcache_eph_pageframes;
+static atomic_t zcache_eph_pageframes_atomic = ATOMIC_INIT(0);
+static ssize_t zcache_eph_pageframes_max;
+static inline void inc_zcache_eph_pageframes(void)
+{
+ zcache_eph_pageframes = atomic_inc_return(&zcache_eph_pageframes_atomic);
+ if (zcache_eph_pageframes > zcache_eph_pageframes_max)
+ zcache_eph_pageframes_max = zcache_eph_pageframes;
+};
+static inline void dec_zcache_eph_pageframes(void)
+{
+ zcache_eph_pageframes = atomic_dec_return(&zcache_eph_pageframes_atomic);
+};
+extern ssize_t zcache_pers_pageframes;
+static atomic_t zcache_pers_pageframes_atomic = ATOMIC_INIT(0);
+static ssize_t zcache_pers_pageframes_max;
+static inline void inc_zcache_pers_pageframes(void)
+{
+ zcache_pers_pageframes = atomic_inc_return(&zcache_pers_pageframes_atomic);
+ if (zcache_pers_pageframes > zcache_pers_pageframes_max)
+ zcache_pers_pageframes_max = zcache_pers_pageframes;
+}
+static inline void dec_zcache_pers_pageframes(void)
+{
+ zcache_pers_pageframes = atomic_dec_return(&zcache_pers_pageframes_atomic);
+}
+static ssize_t zcache_pageframes_alloced;
+static atomic_t zcache_pageframes_alloced_atomic = ATOMIC_INIT(0);
+static inline void inc_zcache_pageframes_alloced(void)
+{
+ zcache_pageframes_alloced = atomic_inc_return(&zcache_pageframes_alloced_atomic);
+};
+static ssize_t zcache_pageframes_freed;
+static atomic_t zcache_pageframes_freed_atomic = ATOMIC_INIT(0);
+static inline void inc_zcache_pageframes_freed(void)
+{
+ zcache_pageframes_freed = atomic_inc_return(&zcache_pageframes_freed_atomic);
+}
+static ssize_t zcache_eph_zpages;
+static atomic_t zcache_eph_zpages_atomic = ATOMIC_INIT(0);
+static ssize_t zcache_eph_zpages_max;
+static inline void inc_zcache_eph_zpages(void)
+{
+ zcache_eph_zpages = atomic_inc_return(&zcache_eph_zpages_atomic);
+ if (zcache_eph_zpages > zcache_eph_zpages_max)
+ zcache_eph_zpages_max = zcache_eph_zpages;
+}
+static inline void dec_zcache_eph_zpages(unsigned zpages)
+{
+ zcache_eph_zpages = atomic_sub_return(zpages, &zcache_eph_zpages_atomic);
+}
+extern ssize_t zcache_pers_zpages;
+static atomic_t zcache_pers_zpages_atomic = ATOMIC_INIT(0);
+static ssize_t zcache_pers_zpages_max;
+static inline void inc_zcache_pers_zpages(void)
+{
+ zcache_pers_zpages = atomic_inc_return(&zcache_pers_zpages_atomic);
+ if (zcache_pers_zpages > zcache_pers_zpages_max)
+ zcache_pers_zpages_max = zcache_pers_zpages;
+}
+static inline void dec_zcache_pers_zpages(unsigned zpages)
+{
+ zcache_pers_zpages = atomic_sub_return(zpages, &zcache_pers_zpages_atomic);
+}
+
+static inline unsigned long curr_pageframes_count(void)
+{
+ return zcache_pageframes_alloced -
+ atomic_read(&zcache_pageframes_freed_atomic) -
+ atomic_read(&zcache_eph_pageframes_atomic) -
+ atomic_read(&zcache_pers_pageframes_atomic);
+};
+/* but for the rest of these, counting races are ok */
+extern ssize_t zcache_flush_total;
+extern ssize_t zcache_flush_found;
+extern ssize_t zcache_flobj_total;
+extern ssize_t zcache_flobj_found;
+extern ssize_t zcache_failed_eph_puts;
+extern ssize_t zcache_failed_pers_puts;
+extern ssize_t zcache_failed_getfreepages;
+extern ssize_t zcache_failed_alloc;
+extern ssize_t zcache_put_to_flush;
+extern ssize_t zcache_compress_poor;
+extern ssize_t zcache_mean_compress_poor;
+extern ssize_t zcache_eph_ate_tail;
+extern ssize_t zcache_eph_ate_tail_failed;
+extern ssize_t zcache_pers_ate_eph;
+extern ssize_t zcache_pers_ate_eph_failed;
+extern ssize_t zcache_evicted_eph_zpages;
+extern ssize_t zcache_evicted_eph_pageframes;
+extern ssize_t zcache_last_active_file_pageframes;
+extern ssize_t zcache_last_inactive_file_pageframes;
+extern ssize_t zcache_last_active_anon_pageframes;
+extern ssize_t zcache_last_inactive_anon_pageframes;
+extern ssize_t zcache_eph_nonactive_puts_ignored;
+extern ssize_t zcache_pers_nonactive_puts_ignored;
+
+int zcache_debugfs_init(void);
+#else
+static inline void inc_zcache_obj_count(void) { };
+static inline void dec_zcache_obj_count(void) { };
+static inline void inc_zcache_objnode_count(void) { };
+static inline void dec_zcache_objnode_count(void) { };
+static inline void inc_zcache_eph_zbytes(unsigned clen) { };
+static inline void dec_zcache_eph_zbytes(unsigned zsize) { };
+static inline void inc_zcache_pers_zbytes(unsigned clen) { };
+static inline void dec_zcache_pers_zbytes(unsigned zsize) { };
+static inline void inc_zcache_eph_pageframes(void) { };
+static inline void dec_zcache_eph_pageframes(void) { };
+static inline void inc_zcache_pers_pageframes(void) { };
+static inline void dec_zcache_pers_pageframes(void) { };
+static inline void inc_zcache_pageframes_alloced(void) { };
+static inline void inc_zcache_pageframes_freed(void) { };
+static inline void inc_zcache_eph_zpages(void) { };
+static inline void dec_zcache_eph_zpages(unsigned zpages) { };
+static inline void inc_zcache_pers_zpages(void) { };
+static inline void dec_zcache_pers_zpages(unsigned zpages) { };
+static inline unsigned long curr_pageframes_count(void)
+{
+ return 0;
+};
+static inline int zcache_debugfs_init(void)
+{
+ return 0;
+};
+#endif
diff --git a/drivers/staging/ramster/zcache-main.c b/drivers/staging/ramster/zcache-main.c
index a43c3b0..52c29de 100644
--- a/drivers/staging/ramster/zcache-main.c
+++ b/drivers/staging/ramster/zcache-main.c
@@ -29,6 +29,7 @@
#include "zcache.h"
#include "zbud.h"
#include "ramster.h"
+#include "debug.h"
#ifdef CONFIG_RAMSTER
static bool ramster_enabled __read_mostly;
static bool disable_frontswap_selfshrink __read_mostly;
@@ -133,135 +134,13 @@ static struct kmem_cache *zcache_obj_cache;
static DEFINE_PER_CPU(struct zcache_preload, zcache_preloads) = { 0, };
-/* we try to keep these statistics SMP-consistent */
-static ssize_t zcache_obj_count;
-static atomic_t zcache_obj_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_obj_count_max;
-static inline void inc_zcache_obj_count(void)
-{
- zcache_obj_count = atomic_inc_return(&zcache_obj_atomic);
- if (zcache_obj_count > zcache_obj_count_max)
- zcache_obj_count_max = zcache_obj_count;
-}
-static ssize_t zcache_objnode_count;
-static inline void dec_zcache_obj_count(void)
-{
- zcache_obj_count = atomic_dec_return(&zcache_obj_atomic);
- BUG_ON(zcache_obj_count < 0);
-};
-static atomic_t zcache_objnode_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_objnode_count_max;
-static inline void inc_zcache_objnode_count(void)
-{
- zcache_objnode_count = atomic_inc_return(&zcache_objnode_atomic);
- if (zcache_objnode_count > zcache_objnode_count_max)
- zcache_objnode_count_max = zcache_objnode_count;
-};
-static inline void dec_zcache_objnode_count(void)
-{
- zcache_objnode_count = atomic_dec_return(&zcache_objnode_atomic);
- BUG_ON(zcache_objnode_count < 0);
-};
-static u64 zcache_eph_zbytes;
-static atomic_long_t zcache_eph_zbytes_atomic = ATOMIC_INIT(0);
-static u64 zcache_eph_zbytes_max;
-static inline void inc_zcache_eph_zbytes(unsigned clen)
-{
- zcache_eph_zbytes = atomic_long_add_return(clen, &zcache_eph_zbytes_atomic);
- if (zcache_eph_zbytes > zcache_eph_zbytes_max)
- zcache_eph_zbytes_max = zcache_eph_zbytes;
-};
-static inline void dec_zcache_eph_zbytes(unsigned zsize)
-{
- zcache_eph_zbytes = atomic_long_sub_return(zsize, &zcache_eph_zbytes_atomic);
-};
-static u64 zcache_pers_zbytes;
-static atomic_long_t zcache_pers_zbytes_atomic = ATOMIC_INIT(0);
-static u64 zcache_pers_zbytes_max;
-static inline void inc_zcache_pers_zbytes(unsigned clen)
-{
- zcache_pers_zbytes = atomic_long_add_return(clen, &zcache_pers_zbytes_atomic);
- if (zcache_pers_zbytes > zcache_pers_zbytes_max)
- zcache_pers_zbytes_max = zcache_pers_zbytes;
-}
-static ssize_t zcache_eph_pageframes;
-static inline void dec_zcache_pers_zbytes(unsigned zsize)
-{
- zcache_pers_zbytes = atomic_long_sub_return(zsize, &zcache_pers_zbytes_atomic);
-}
-static atomic_t zcache_eph_pageframes_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_eph_pageframes_max;
-static inline void inc_zcache_eph_pageframes(void)
-{
- zcache_eph_pageframes = atomic_inc_return(&zcache_eph_pageframes_atomic);
- if (zcache_eph_pageframes > zcache_eph_pageframes_max)
- zcache_eph_pageframes_max = zcache_eph_pageframes;
-};
-static ssize_t zcache_pers_pageframes;
-static inline void dec_zcache_eph_pageframes(void)
-{
- zcache_eph_pageframes = atomic_dec_return(&zcache_eph_pageframes_atomic);
-};
-static atomic_t zcache_pers_pageframes_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_pers_pageframes_max;
-static inline void inc_zcache_pers_pageframes(void)
-{
- zcache_pers_pageframes = atomic_inc_return(&zcache_pers_pageframes_atomic);
- if (zcache_pers_pageframes > zcache_pers_pageframes_max)
- zcache_pers_pageframes_max = zcache_pers_pageframes;
-}
-static ssize_t zcache_pageframes_alloced;
-static inline void dec_zcache_pers_pageframes(void)
-{
- zcache_pers_pageframes = atomic_dec_return(&zcache_pers_pageframes_atomic);
-}
-static atomic_t zcache_pageframes_alloced_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_pageframes_freed;
-static atomic_t zcache_pageframes_freed_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_eph_zpages;
-static inline void inc_zcache_pageframes_alloced(void)
-{
- zcache_pageframes_alloced = atomic_inc_return(&zcache_pageframes_alloced_atomic);
-};
-static inline void inc_zcache_pageframes_freed(void)
-{
- zcache_pageframes_freed = atomic_inc_return(&zcache_pageframes_freed_atomic);
-}
-static ssize_t zcache_eph_zpages;
-static atomic_t zcache_eph_zpages_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_eph_zpages_max;
-static inline void inc_zcache_eph_zpages(void)
-{
- zcache_eph_zpages = atomic_inc_return(&zcache_eph_zpages_atomic);
- if (zcache_eph_zpages > zcache_eph_zpages_max)
- zcache_eph_zpages_max = zcache_eph_zpages;
-}
-static ssize_t zcache_pers_zpages;
-static inline void dec_zcache_eph_zpages(unsigned zpages)
-{
- zcache_eph_zpages = atomic_sub_return(zpages, &zcache_eph_zpages_atomic);
-}
-static atomic_t zcache_pers_zpages_atomic = ATOMIC_INIT(0);
-static ssize_t zcache_pers_zpages_max;
-static inline void inc_zcache_pers_zpages(void)
-{
- zcache_pers_zpages = atomic_inc_return(&zcache_pers_zpages_atomic);
- if (zcache_pers_zpages > zcache_pers_zpages_max)
- zcache_pers_zpages_max = zcache_pers_zpages;
-}
-static inline void dec_zcache_pers_zpages(unsigned zpages)
-{
- zcache_pers_zpages = atomic_sub_return(zpages, &zcache_pers_zpages_atomic);
-}
+/* Used by debug.c */
+ssize_t zcache_pers_zpages;
+u64 zcache_pers_zbytes;
+ssize_t zcache_eph_pageframes;
+ssize_t zcache_pers_pageframes;
-static inline unsigned long curr_pageframes_count(void)
-{
- return zcache_pageframes_alloced -
- atomic_read(&zcache_pageframes_freed_atomic) -
- atomic_read(&zcache_eph_pageframes_atomic) -
- atomic_read(&zcache_pers_pageframes_atomic);
-};
-/* but for the rest of these, counting races are ok */
+/* Used by this code. */
static ssize_t zcache_flush_total;
static ssize_t zcache_flush_found;
static ssize_t zcache_flobj_total;
@@ -285,118 +164,6 @@ static ssize_t zcache_last_active_anon_pageframes;
static ssize_t zcache_last_inactive_anon_pageframes;
static ssize_t zcache_eph_nonactive_puts_ignored;
static ssize_t zcache_pers_nonactive_puts_ignored;
-
-#ifdef CONFIG_DEBUG_FS
-#include <linux/debugfs.h>
-#define zdfs debugfs_create_size_t
-#define zdfs64 debugfs_create_u64
-static int zcache_debugfs_init(void)
-{
- struct dentry *root = debugfs_create_dir("zcache", NULL);
- if (root == NULL)
- return -ENXIO;
-
- zdfs("obj_count", S_IRUGO, root, &zcache_obj_count);
- zdfs("obj_count_max", S_IRUGO, root, &zcache_obj_count_max);
- zdfs("objnode_count", S_IRUGO, root, &zcache_objnode_count);
- zdfs("objnode_count_max", S_IRUGO, root, &zcache_objnode_count_max);
- zdfs("flush_total", S_IRUGO, root, &zcache_flush_total);
- zdfs("flush_found", S_IRUGO, root, &zcache_flush_found);
- zdfs("flobj_total", S_IRUGO, root, &zcache_flobj_total);
- zdfs("flobj_found", S_IRUGO, root, &zcache_flobj_found);
- zdfs("failed_eph_puts", S_IRUGO, root, &zcache_failed_eph_puts);
- zdfs("failed_pers_puts", S_IRUGO, root, &zcache_failed_pers_puts);
- zdfs("failed_get_free_pages", S_IRUGO, root,
- &zcache_failed_getfreepages);
- zdfs("failed_alloc", S_IRUGO, root, &zcache_failed_alloc);
- zdfs("put_to_flush", S_IRUGO, root, &zcache_put_to_flush);
- zdfs("compress_poor", S_IRUGO, root, &zcache_compress_poor);
- zdfs("mean_compress_poor", S_IRUGO, root, &zcache_mean_compress_poor);
- zdfs("eph_ate_tail", S_IRUGO, root, &zcache_eph_ate_tail);
- zdfs("eph_ate_tail_failed", S_IRUGO, root, &zcache_eph_ate_tail_failed);
- zdfs("pers_ate_eph", S_IRUGO, root, &zcache_pers_ate_eph);
- zdfs("pers_ate_eph_failed", S_IRUGO, root, &zcache_pers_ate_eph_failed);
- zdfs("evicted_eph_zpages", S_IRUGO, root, &zcache_evicted_eph_zpages);
- zdfs("evicted_eph_pageframes", S_IRUGO, root,
- &zcache_evicted_eph_pageframes);
- zdfs("eph_pageframes", S_IRUGO, root, &zcache_eph_pageframes);
- zdfs("eph_pageframes_max", S_IRUGO, root, &zcache_eph_pageframes_max);
- zdfs("pers_pageframes", S_IRUGO, root, &zcache_pers_pageframes);
- zdfs("pers_pageframes_max", S_IRUGO, root, &zcache_pers_pageframes_max);
- zdfs("eph_zpages", S_IRUGO, root, &zcache_eph_zpages);
- zdfs("eph_zpages_max", S_IRUGO, root, &zcache_eph_zpages_max);
- zdfs("pers_zpages", S_IRUGO, root, &zcache_pers_zpages);
- zdfs("pers_zpages_max", S_IRUGO, root, &zcache_pers_zpages_max);
- zdfs("last_active_file_pageframes", S_IRUGO, root,
- &zcache_last_active_file_pageframes);
- zdfs("last_inactive_file_pageframes", S_IRUGO, root,
- &zcache_last_inactive_file_pageframes);
- zdfs("last_active_anon_pageframes", S_IRUGO, root,
- &zcache_last_active_anon_pageframes);
- zdfs("last_inactive_anon_pageframes", S_IRUGO, root,
- &zcache_last_inactive_anon_pageframes);
- zdfs("eph_nonactive_puts_ignored", S_IRUGO, root,
- &zcache_eph_nonactive_puts_ignored);
- zdfs("pers_nonactive_puts_ignored", S_IRUGO, root,
- &zcache_pers_nonactive_puts_ignored);
- zdfs64("eph_zbytes", S_IRUGO, root, &zcache_eph_zbytes);
- zdfs64("eph_zbytes_max", S_IRUGO, root, &zcache_eph_zbytes_max);
- zdfs64("pers_zbytes", S_IRUGO, root, &zcache_pers_zbytes);
- zdfs64("pers_zbytes_max", S_IRUGO, root, &zcache_pers_zbytes_max);
- return 0;
-}
-#undef zdebugfs
-#undef zdfs64
-#endif
-
-/* developers can call this in case of ooms, e.g. to find memory leaks */
-void zcache_dump(void)
-{
- pr_debug("zcache: obj_count=%u\n", zcache_obj_count);
- pr_debug("zcache: obj_count_max=%u\n", zcache_obj_count_max);
- pr_debug("zcache: objnode_count=%u\n", zcache_objnode_count);
- pr_debug("zcache: objnode_count_max=%u\n", zcache_objnode_count_max);
- pr_debug("zcache: flush_total=%u\n", zcache_flush_total);
- pr_debug("zcache: flush_found=%u\n", zcache_flush_found);
- pr_debug("zcache: flobj_total=%u\n", zcache_flobj_total);
- pr_debug("zcache: flobj_found=%u\n", zcache_flobj_found);
- pr_debug("zcache: failed_eph_puts=%u\n", zcache_failed_eph_puts);
- pr_debug("zcache: failed_pers_puts=%u\n", zcache_failed_pers_puts);
- pr_debug("zcache: failed_get_free_pages=%u\n",
- zcache_failed_getfreepages);
- pr_debug("zcache: failed_alloc=%u\n", zcache_failed_alloc);
- pr_debug("zcache: put_to_flush=%u\n", zcache_put_to_flush);
- pr_debug("zcache: compress_poor=%u\n", zcache_compress_poor);
- pr_debug("zcache: mean_compress_poor=%u\n",
- zcache_mean_compress_poor);
- pr_debug("zcache: eph_ate_tail=%u\n", zcache_eph_ate_tail);
- pr_debug("zcache: eph_ate_tail_failed=%u\n",
- zcache_eph_ate_tail_failed);
- pr_debug("zcache: pers_ate_eph=%u\n", zcache_pers_ate_eph);
- pr_debug("zcache: pers_ate_eph_failed=%u\n",
- zcache_pers_ate_eph_failed);
- pr_debug("zcache: evicted_eph_zpages=%u\n", zcache_evicted_eph_zpages);
- pr_debug("zcache: evicted_eph_pageframes=%u\n",
- zcache_evicted_eph_pageframes);
- pr_debug("zcache: eph_pageframes=%u\n", zcache_eph_pageframes);
- pr_debug("zcache: eph_pageframes_max=%u\n", zcache_eph_pageframes_max);
- pr_debug("zcache: pers_pageframes=%u\n", zcache_pers_pageframes);
- pr_debug("zcache: pers_pageframes_max=%u\n",
- zcache_pers_pageframes_max);
- pr_debug("zcache: eph_zpages=%u\n", zcache_eph_zpages);
- pr_debug("zcache: eph_zpages_max=%u\n", zcache_eph_zpages_max);
- pr_debug("zcache: pers_zpages=%u\n", zcache_pers_zpages);
- pr_debug("zcache: pers_zpages_max=%u\n", zcache_pers_zpages_max);
- pr_debug("zcache: eph_zbytes=%llu\n",
- (unsigned long long)zcache_eph_zbytes);
- pr_debug("zcache: eph_zbytes_max=%llu\n",
- (unsigned long long)zcache_eph_zbytes_max);
- pr_debug("zcache: pers_zbytes=%llu\n",
- (unsigned long long)zcache_pers_zbytes);
- pr_debug("zcache: pers_zbytes_max=%llu\n",
- (unsigned long long)zcache_pers_zbytes_max);
-}
-
/*
* zcache core code starts here
*/
--
1.7.7.6
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