LU-10602 llite: add file heat support

[fs/lustre-release.git] / lustre / llite / llite_internal.h

diff --git a/lustre/llite/llite_internal.h b/lustre/llite/llite_internal.h
index 974ab92..168f16e 100644 (file)
--- a/lustre/llite/llite_internal.h
+++ b/lustre/llite/llite_internal.h
@@ -199,6 +199,11 @@ struct ll_inode_info {
                        /* for writepage() only to communicate to fsync */
                        int                     lli_async_rc;
 
+                       /* protect the file heat fields */
+                       spinlock_t                      lli_heat_lock;
+                       __u32                           lli_heat_flags;
+                       struct obd_heat_instance        lli_heat_instances[OBD_HEAT_COUNT];
+
                        /*
                         * Whenever a process try to read/write the file, the
                         * jobid of the process will be saved here, and it'll
@@ -456,7 +461,7 @@ enum stats_track_type {
 /*     LL_SBI_PIO          0x1000000    parallel IO support, introduced in
                                         2.10, abandoned */
 #define LL_SBI_TINY_WRITE   0x2000000 /* tiny write support */
-
+#define LL_SBI_FILE_HEAT    0x4000000 /* file heat support */
 #define LL_SBI_FLAGS {         \
        "nolck",        \
        "checksum",     \
@@ -484,6 +489,7 @@ enum stats_track_type {
        "file_secctx",  \
        "pio",          \
        "tiny_write",   \
+       "file_heat",    \
 }
 
 /* This is embedded into llite super-blocks to keep track of connect
@@ -572,8 +578,14 @@ struct ll_sb_info {
 
        struct kset               ll_kset;      /* sysfs object */
        struct completion         ll_kobj_unregister;
+
+       /* File heat */
+       unsigned int              ll_heat_decay_weight;
+       unsigned int              ll_heat_period_second;
 };
 
+#define SBI_DEFAULT_HEAT_DECAY_WEIGHT  ((80 * 256 + 50) / 100)
+#define SBI_DEFAULT_HEAT_PERIOD_SECOND (60)
 /*
  * per file-descriptor read-ahead data.
  */
@@ -731,6 +743,11 @@ static inline bool ll_sbi_has_tiny_write(struct ll_sb_info *sbi)
        return !!(sbi->ll_flags & LL_SBI_TINY_WRITE);
 }
 
+static inline bool ll_sbi_has_file_heat(struct ll_sb_info *sbi)
+{
+       return !!(sbi->ll_flags & LL_SBI_FILE_HEAT);
+}
+
 void ll_ras_enter(struct file *f);
 
 /* llite/lcommon_misc.c */