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authorThomas Richter <tmricht@linux.ibm.com>2018-05-08 08:53:39 +0300
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2018-05-09 11:55:00 +0300
commit3c0a83b14ea71fef5ccc93a3bd2de5f892be3194 (patch)
treee1e9ed63195f3fe3e8cea05bc8e49ffe68c9a949 /arch/s390
parent4bbaf2584b86b0772413edeac22ff448f36351b1 (diff)
downloadlinux-3c0a83b14ea71fef5ccc93a3bd2de5f892be3194.tar.xz
perf: fix invalid bit in diagnostic entry
The s390 CPU measurement facility sampling mode supports basic entries and diagnostic entries. Each entry has a valid bit to indicate the status of the entry as valid or invalid. This bit is bit 31 in the diagnostic entry, but the bit mask definition refers to bit 30. Fix this by making the reserved field one bit larger. Fixes: 7e75fc3ff4cf ("s390/cpum_sf: Add raw data sampling to support the diagnostic-sampling function") 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>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/asm/cpu_mf.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h
index f58d17e9dd65..7093a27520ee 100644
--- a/arch/s390/include/asm/cpu_mf.h
+++ b/arch/s390/include/asm/cpu_mf.h
@@ -113,7 +113,7 @@ struct hws_basic_entry {
struct hws_diag_entry {
unsigned int def:16; /* 0-15 Data Entry Format */
- unsigned int R:14; /* 16-19 and 20-30 reserved */
+ unsigned int R:15; /* 16-19 and 20-30 reserved */
unsigned int I:1; /* 31 entry valid or invalid */
u8 data[]; /* Machine-dependent sample data */
} __packed;