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    Subject[patch 05/15] kmsg: convert cpcmd to kmsg api.
    From: Christian Borntraeger <borntraeger@de.ibm.com>

    Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
    Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
    ---

    Documentation/s390/kmsg/cpcmd | 18 ++++++++++++++++++
    arch/s390/kernel/cpcmd.c | 7 +++++--
    2 files changed, 23 insertions(+), 2 deletions(-)

    Index: quilt-2.6/arch/s390/kernel/cpcmd.c
    ===================================================================
    --- quilt-2.6.orig/arch/s390/kernel/cpcmd.c
    +++ quilt-2.6/arch/s390/kernel/cpcmd.c
    @@ -15,9 +15,12 @@
    #include <linux/string.h>
    #include <asm/ebcdic.h>
    #include <asm/cpcmd.h>
    +#include <asm/kmsg.h>
    #include <asm/system.h>
    #include <asm/io.h>

    +#define KMSG_COMPONENT "cpcmd"
    +
    static DEFINE_SPINLOCK(cpcmd_lock);
    static char cpcmd_buf[241];

    @@ -104,8 +107,8 @@ int cpcmd(const char *cmd, char *respons
    (((unsigned long)response + rlen) >> 31)) {
    lowbuf = kmalloc(rlen, GFP_KERNEL | GFP_DMA);
    if (!lowbuf) {
    - printk(KERN_WARNING
    - "cpcmd: could not allocate response buffer\n");
    + kmsg_warn(1, "The cpcmd kernel function failed to "
    + "allocate a response buffer\n");
    return -ENOMEM;
    }
    spin_lock_irqsave(&cpcmd_lock, flags);
    Index: quilt-2.6/Documentation/s390/kmsg/cpcmd
    ===================================================================
    --- /dev/null
    +++ quilt-2.6/Documentation/s390/kmsg/cpcmd
    @@ -0,0 +1,18 @@
    +/*?
    + * Text: "The cpcmd kernel function failed to allocate a response buffer"
    + * Tag: cpcmd.1
    + * Severity: Warning
    + * Description:
    + * IPL code, console detection, and device drivers like vmcp or vmlogrdr use
    + * the cpcmd kernel function to send commands to the z/VM control program (CP).
    + * If a program that uses the cpcmd function does not allocate a contiguous
    + * response buffer below 2 GB guest real storage, cpcmd creates a bounce buffer
    + * to be used as the response buffer. Because of low memory or memory
    + * fragmentation, cpcmd could not create the bounce buffer.
    + * User action:
    + * Look for related page allocation failure messages and at the stack trace to
    + * find out which program or operation failed. Free some memory and retry the
    + * failed operation. Consider allocating more memory to your z/VM guest virtual
    + * machine.
    + */
    +
    --
    blue skies,
    Martin.

    "Reality continues to ruin my life." - Calvin.



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