bcachefs: Add iops fields to bch_member

Signed-off-by: Hunter Shaffer <huntershaffer182456@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

fs/bcachefs/bcachefs_format.h

@@ -1269,6 +1269,19 @@ struct bch_sb_field_journal_v2 {
 
 #define BCH_MIN_NR_NBUCKETS	(1 << 6)
 
+#define BCH_IOPS_MEASUREMENTS()			\
+	x(seqread,	0)			\
+	x(seqwrite,	1)			\
+	x(randread,	2)			\
+	x(randwrite,	3)
+
+enum bch_iops_measurement {
+#define x(t, n) BCH_IOPS_##t = n,
+	BCH_IOPS_MEASUREMENTS()
+#undef x
+	BCH_IOPS_NR
+};
+
 struct bch_member {
 	__uuid_t		uuid;
 	__le64			nbuckets;	/* device size */
@@ -1277,19 +1290,20 @@ struct bch_member {
 	__le32			pad;
 	__le64			last_mount;	/* time_t */
 
-	__le64			flags[2];
+	__le64			flags;
+	__le32			iops[4];
 };
 
 #define BCH_MEMBER_V1_BYTES	56
 
-LE64_BITMASK(BCH_MEMBER_STATE,		struct bch_member, flags[0],  0,  4)
+LE64_BITMASK(BCH_MEMBER_STATE,		struct bch_member, flags,  0,  4)
 /* 4-14 unused, was TIER, HAS_(META)DATA, REPLACEMENT */
-LE64_BITMASK(BCH_MEMBER_DISCARD,	struct bch_member, flags[0], 14, 15)
-LE64_BITMASK(BCH_MEMBER_DATA_ALLOWED,	struct bch_member, flags[0], 15, 20)
-LE64_BITMASK(BCH_MEMBER_GROUP,		struct bch_member, flags[0], 20, 28)
-LE64_BITMASK(BCH_MEMBER_DURABILITY,	struct bch_member, flags[0], 28, 30)
+LE64_BITMASK(BCH_MEMBER_DISCARD,	struct bch_member, flags, 14, 15)
+LE64_BITMASK(BCH_MEMBER_DATA_ALLOWED,	struct bch_member, flags, 15, 20)
+LE64_BITMASK(BCH_MEMBER_GROUP,		struct bch_member, flags, 20, 28)
+LE64_BITMASK(BCH_MEMBER_DURABILITY,	struct bch_member, flags, 28, 30)
 LE64_BITMASK(BCH_MEMBER_FREESPACE_INITIALIZED,
-					struct bch_member, flags[0], 30, 31)
+					struct bch_member, flags, 30, 31)
 
 #if 0
 LE64_BITMASK(BCH_MEMBER_NR_READ_ERRORS,	struct bch_member, flags[1], 0,  20);

fs/bcachefs/opts.c

@@ -12,6 +12,11 @@
 
 #define x(t, n, ...) [n] = #t,
 
+const char * const bch2_iops_measurements[] = {
+	BCH_IOPS_MEASUREMENTS()
+	NULL
+};
+
 const char * const bch2_error_actions[] = {
 	BCH_ERROR_ACTIONS()
 	NULL

fs/bcachefs/opts.h

@@ -10,6 +10,7 @@
 
 struct bch_fs;
 
+extern const char * const bch2_iops_measurements[];
 extern const char * const bch2_error_actions[];
 extern const char * const bch2_fsck_fix_opts[];
 extern const char * const bch2_version_upgrade_opts[];

fs/bcachefs/sb-members.c

@@ -2,6 +2,7 @@
 
 #include "bcachefs.h"
 #include "disk_groups.h"
+#include "opts.h"
 #include "replicas.h"
 #include "sb-members.h"
 #include "super-io.h"
@@ -172,6 +173,13 @@ static void member_to_text(struct printbuf *out,
 	prt_units_u64(out, device_size << 9);
 	prt_newline(out);
 
+	for (unsigned i = 0; i < BCH_IOPS_NR; i++) {
+		prt_printf(out, "%s iops:", bch2_iops_measurements[i]);
+		prt_tab(out);
+		prt_printf(out, "%u", le32_to_cpu(m.iops[i]));
+		prt_newline(out);
+	}
+
 	prt_printf(out, "Bucket size:");
 	prt_tab(out);
 	prt_units_u64(out, bucket_size << 9);