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authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-09-05 10:22:45 -0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-09-05 10:22:45 -0400
commit593d0a3e9f813db910dc50574532914db21d09ff (patch)
tree12d8413ee57b4383ca8c906996ffe02be6d377a5 /arch/powerpc/include/asm/perf_event.h
parent50e900417b8096939d12a46848f965e27a905e36 (diff)
parent4cb38750d49010ae72e718d46605ac9ba5a851b4 (diff)
Merge commit '4cb38750d49010ae72e718d46605ac9ba5a851b4' into stable/for-linus-3.6
* commit '4cb38750d49010ae72e718d46605ac9ba5a851b4': (6849 commits) bcma: fix invalid PMU chip control masks [libata] pata_cmd64x: whitespace cleanup libata-acpi: fix up for acpi_pm_device_sleep_state API sata_dwc_460ex: device tree may specify dma_channel ahci, trivial: fixed coding style issues related to braces ahci_platform: add hibernation callbacks libata-eh.c: local functions should not be exposed globally libata-transport.c: local functions should not be exposed globally sata_dwc_460ex: support hardreset ata: use module_pci_driver drivers/ata/pata_pcmcia.c: adjust suspicious bit operation pata_imx: Convert to clk_prepare_enable/clk_disable_unprepare ahci: Enable SB600 64bit DMA on MSI K9AGM2 (MS-7327) v2 [libata] Prevent interface errors with Seagate FreeAgent GoFlex drivers/acpi/glue: revert accidental license-related 6b66d95895c bits libata-acpi: add missing inlines in libata.h i2c-omap: Add support for I2C_M_STOP message flag i2c: Fall back to emulated SMBus if the operation isn't supported natively i2c: Add SCCB support i2c-tiny-usb: Add support for the Robofuzz OSIF USB/I2C converter ...
Diffstat (limited to 'arch/powerpc/include/asm/perf_event.h')
-rw-r--r--arch/powerpc/include/asm/perf_event.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/perf_event.h b/arch/powerpc/include/asm/perf_event.h
index 5c16b891d501..0bb23725b1e7 100644
--- a/arch/powerpc/include/asm/perf_event.h
+++ b/arch/powerpc/include/asm/perf_event.h
@@ -26,8 +26,13 @@
#include <asm/ptrace.h>
#include <asm/reg.h>
+/*
+ * Overload regs->result to specify whether we should use the MSR (result
+ * is zero) or the SIAR (result is non zero).
+ */
#define perf_arch_fetch_caller_regs(regs, __ip) \
do { \
+ (regs)->result = 0; \
(regs)->nip = __ip; \
(regs)->gpr[1] = *(unsigned long *)__get_SP(); \
asm volatile("mfmsr %0" : "=r" ((regs)->msr)); \