diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h
index b9da71632827..9917e2717b2b 100644
--- a/arch/s390/include/asm/perf_event.h
+++ b/arch/s390/include/asm/perf_event.h
@@ -60,7 +60,6 @@ struct perf_sf_sde_regs {
 #define PERF_CPUM_SF_DIAG_MODE		0x0002	  /* Diagnostic-sampling flag */
 #define PERF_CPUM_SF_MODE_MASK		(PERF_CPUM_SF_BASIC_MODE| \
 					 PERF_CPUM_SF_DIAG_MODE)
-#define PERF_CPUM_SF_FULL_BLOCKS	0x0004	  /* Process full SDBs only */
 #define PERF_CPUM_SF_FREQ_MODE		0x0008	  /* Sampling with frequency */
 
 #define REG_NONE		0
@@ -71,7 +70,6 @@ struct perf_sf_sde_regs {
 #define SAMPL_RATE(hwc)		((hwc)->event_base)
 #define SAMPL_FLAGS(hwc)	((hwc)->config_base)
 #define SAMPL_DIAG_MODE(hwc)	(SAMPL_FLAGS(hwc) & PERF_CPUM_SF_DIAG_MODE)
-#define SDB_FULL_BLOCKS(hwc)	(SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FULL_BLOCKS)
 #define SAMPLE_FREQ_MODE(hwc)	(SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FREQ_MODE)
 
 #define perf_arch_fetch_caller_regs(regs, __ip) do {			\
diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c
index e7b867e2f73f..7ef72f5ff52e 100644
--- a/arch/s390/kernel/perf_cpum_sf.c
+++ b/arch/s390/kernel/perf_cpum_sf.c
@@ -882,10 +882,6 @@ static int __hw_perf_event_init(struct perf_event *event)
 		SAMPL_FLAGS(hwc) |= PERF_CPUM_SF_DIAG_MODE;
 	}
 
-	/* Check and set other sampling flags */
-	if (attr->config1 & PERF_CPUM_SF_FULL_BLOCKS)
-		SAMPL_FLAGS(hwc) |= PERF_CPUM_SF_FULL_BLOCKS;
-
 	err =  __hw_perf_event_init_rate(event, &si);
 	if (err)
 		goto out;
@@ -1293,11 +1289,8 @@ static inline __uint128_t __cdsg(__uint128_t *ptr, __uint128_t old, __uint128_t
  * The sampling buffer position are retrieved and saved in the TEAR_REG
  * register of the specified perf event.
  *
- * Only full sample-data-blocks are processed.	Specify the flash_all flag
- * to also walk through partially filled sample-data-blocks.  It is ignored
- * if PERF_CPUM_SF_FULL_BLOCKS is set.	The PERF_CPUM_SF_FULL_BLOCKS flag
- * enforces the processing of full sample-data-blocks only (trailer entries
- * with the block-full-indicator bit set).
+ * Only full sample-data-blocks are processed.	Specify the flush_all flag
+ * to also walk through partially filled sample-data-blocks.
  */
 static void hw_perf_event_update(struct perf_event *event, int flush_all)
 {
@@ -1315,9 +1308,6 @@ static void hw_perf_event_update(struct perf_event *event, int flush_all)
 	if (SAMPL_DIAG_MODE(&event->hw))
 		return;
 
-	if (flush_all && SDB_FULL_BLOCKS(hwc))
-		flush_all = 0;
-
 	sdbt = (unsigned long *) TEAR_REG(hwc);
 	done = event_overflow = sampl_overflow = num_sdb = 0;
 	while (!done) {