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| author | Thomas Richter <tmricht@linux.ibm.com> | 2018-05-08 07:53:39 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-05-09 10:55:00 +0200 |
| commit | 3c0a83b14ea71fef5ccc93a3bd2de5f892be3194 (patch) | |
| tree | e1e9ed63195f3fe3e8cea05bc8e49ffe68c9a949 /arch/s390 | |
| parent | 4bbaf2584b86b0772413edeac22ff448f36351b1 (diff) | |
| download | linux-stable-3c0a83b14ea71fef5ccc93a3bd2de5f892be3194.tar.gz linux-stable-3c0a83b14ea71fef5ccc93a3bd2de5f892be3194.tar.bz2 linux-stable-3c0a83b14ea71fef5ccc93a3bd2de5f892be3194.zip | |
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.h | 2 |
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; |