s390/cpum_sf: Add data entry sizes to sampling trailer entry

[ Upstream commit 77715b7ddb446bd39a06f3376e85f4bb95b29bb8 ]

The CPU Measurement sampling facility creates a trailer entry for each
Sample-Data-Block of stored samples. The trailer entry contains the sizes
(in bytes) of the stored sampling types:
 - basic-sampling data entry size
 - diagnostic-sampling data entry size
Both sizes are 2 bytes long.

This patch changes the trailer entry definition to reflect this.

Fixes: fcc77f507333 ("s390/cpum_sf: Atomically reset trailer entry fields of sample-data-blocks")
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h
index 05480e4..073837f 100644 (file)
--- a/arch/s390/include/asm/cpu_mf.h
+++ b/arch/s390/include/asm/cpu_mf.h
@@ -132,7 +132,9 @@ struct hws_trailer_entry {
                        unsigned int f:1;       /* 0 - Block Full Indicator   */
                        unsigned int a:1;       /* 1 - Alert request control  */
                        unsigned int t:1;       /* 2 - Timestamp format       */
-                       unsigned long long:61;  /* 3 - 63: Reserved           */
+                       unsigned int :29;       /* 3 - 31: Reserved           */
+                       unsigned int bsdes:16;  /* 32-47: size of basic SDE   */
+                       unsigned int dsdes:16;  /* 48-63: size of diagnostic SDE */
                };
                unsigned long long flags;       /* 0 - 63: All indicators     */
        };