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| author | Philipp Hachtmann <phacht@linux.vnet.ibm.com> | 2014-04-07 18:25:23 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-05-20 08:58:42 +0200 |
| commit | 6c8cd5bbda7e6be166cf2e2dd4be5890193e17ac (patch) | |
| tree | 0245d1a206b04c2cd2b5b4914dfb696205673861 /arch/s390/include/asm/lowcore.h | |
| parent | 5b3f683e694a835f5dfdab06102be1a50604c3b7 (diff) | |
| download | talos-obmc-linux-6c8cd5bbda7e6be166cf2e2dd4be5890193e17ac.tar.gz talos-obmc-linux-6c8cd5bbda7e6be166cf2e2dd4be5890193e17ac.zip | |
s390/spinlock: optimize spinlock code sequence
Use lowcore constant to improve the code generated for spinlocks.
[ Martin Schwidefsky: patch breakdown and code beautification ]
Signed-off-by: Philipp Hachtmann <phacht@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/lowcore.h')
| -rw-r--r-- | arch/s390/include/asm/lowcore.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h index bbf8141408cd..3b476eb92f20 100644 --- a/arch/s390/include/asm/lowcore.h +++ b/arch/s390/include/asm/lowcore.h @@ -139,7 +139,7 @@ struct _lowcore { __u32 percpu_offset; /* 0x02f0 */ __u32 machine_flags; /* 0x02f4 */ __u32 ftrace_func; /* 0x02f8 */ - __u8 pad_0x02fc[0x0300-0x02fc]; /* 0x02fc */ + __u32 spinlock_lockval; /* 0x02fc */ /* Interrupt response block */ __u8 irb[64]; /* 0x0300 */ @@ -285,7 +285,8 @@ struct _lowcore { __u64 machine_flags; /* 0x0388 */ __u64 ftrace_func; /* 0x0390 */ __u64 gmap; /* 0x0398 */ - __u8 pad_0x03a0[0x0400-0x03a0]; /* 0x03a0 */ + __u32 spinlock_lockval; /* 0x03a0 */ + __u8 pad_0x03a0[0x0400-0x03a4]; /* 0x03a4 */ /* Interrupt response block. */ __u8 irb[64]; /* 0x0400 */ |
