From fcc77f507333776eaa336ab4ff49c23422f53703 Mon Sep 17 00:00:00 2001 From: Hendrik Brueckner Date: Thu, 12 Dec 2013 17:26:51 +0100 Subject: 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 Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/cpu_mf.h | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'arch/s390/include/asm/cpu_mf.h') diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h index d707abc..b0b3059 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; /* */ -- cgit v1.1