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| author |   Sebastian Ott <sebott@linux.vnet.ibm.com> | 2015-04-10 14:34:33 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-04-15 12:23:53 +0200 |
| commit | 80ed156a3d12819a8c839f40f5b6996c4aa117a5 (patch) | |
| tree | e7cc5c5e155456168ed80b1f0f69205c2d6cc437 /arch/s390/include/asm/pci.h | |
| parent | s390/pci: extract software counters from fmb (diff) | |
| download | linux-dev-80ed156a3d12819a8c839f40f5b6996c4aa117a5.tar.xz linux-dev-80ed156a3d12819a8c839f40f5b6996c4aa117a5.zip | |
s390/pci: add locking for fmb access
Function measurement can be toggled at runtime. Make sure that
all access to the fmb is protected via a mutex.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/pci.h')
| -rw-r--r-- | arch/s390/include/asm/pci.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h index d318e38dcb83..a648338c434a 100644 --- a/arch/s390/include/asm/pci.h +++ b/arch/s390/include/asm/pci.h @@ -7,6 +7,7 @@ #define PCI_BAR_COUNT 6 #include <linux/pci.h> +#include <linux/mutex.h> #include <asm-generic/pci.h> #include <asm-generic/pci-dma-compat.h> #include <asm/pci_clp.h> @@ -76,6 +77,7 @@ struct zpci_dev { u8 pft; /* pci function type */ u16 domain; + struct mutex lock; u8 pfip[CLP_PFIP_NR_SEGMENTS]; /* pci function internal path */ u32 uid; /* user defined id */ u8 util_str[CLP_UTIL_STR_LEN]; /* utility string */ |