diff options
| author | Hendrik Brueckner | 2013-12-12 17:26:51 +0100 |
|---|---|---|
| committer | Martin Schwidefsky | 2013-12-16 14:37:57 +0100 |
| commit | fcc77f507333776eaa336ab4ff49c23422f53703 (patch) | |
| tree | 5b1e158fc3da9b865d1bdbb89b7cb23936e6cb57 /arch/s390/include | |
| parent | 69f239ed335a4b03265cae3ca930f3f166e42e35 (diff) | |
s390/cpum_sf: Atomically reset trailer entry fields of sample-data-blocks
Ensure to reset the sample-data-block full indicator and the overflow counter
at the same time. This must be done atomically because the sampling hardware
is still active while full sample-data-block is processed.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
| -rw-r--r-- | arch/s390/include/asm/cpu_mf.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h index d707abc26157..b0b3059b8d64 100644 --- a/arch/s390/include/asm/cpu_mf.h +++ b/arch/s390/include/asm/cpu_mf.h @@ -115,10 +115,15 @@ struct hws_data_entry { } __packed; 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 */ + union { + struct { + 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 long long flags; /* 0 - 63: All indicators */ + }; unsigned long long overflow; /* 64 - sample Overflow count */ unsigned long long timestamp; /* 16 - time-stamp */ unsigned long long timestamp1; /* */ |