[PATCH] powerpc/sysfs: Expose MMCR2 spr in sysfs
From: Madhavan Srinivasan <hidden>
Date: 2017-06-25 19:03:12
Monitor Mode Control Register 2 (MMCR2) is a 64-bit register that contains 9-bit control fields for controlling the operation of PMC1 - PMC6. Patch to expose the MMCR2 spr in sysfs. Signed-off-by: Madhavan Srinivasan <redacted> --- arch/powerpc/kernel/sysfs.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 4437c70c7c2b..587eb3a7b5da 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c@@ -482,6 +482,7 @@ SYSFS_PMCSETUP(pmc7, SPRN_PMC7); SYSFS_PMCSETUP(pmc8, SPRN_PMC8); SYSFS_PMCSETUP(mmcra, SPRN_MMCRA); +SYSFS_PMCSETUP(mmcr2, SPRN_MMCR2); SYSFS_SPRSETUP(purr, SPRN_PURR); SYSFS_SPRSETUP(spurr, SPRN_SPURR); SYSFS_SPRSETUP(pir, SPRN_PIR);
@@ -492,6 +493,7 @@ SYSFS_SPRSETUP(pir, SPRN_PIR); Lets be conservative and default to pseries. */ static DEVICE_ATTR(mmcra, 0600, show_mmcra, store_mmcra); +static DEVICE_ATTR(mmcr2, 0600, show_mmcr2, store_mmcr2); static DEVICE_ATTR(spurr, 0400, show_spurr, NULL); static DEVICE_ATTR(purr, 0400, show_purr, store_purr); static DEVICE_ATTR(pir, 0400, show_pir, NULL);
@@ -760,6 +762,9 @@ static int register_cpu_online(unsigned int cpu) if (cpu_has_feature(CPU_FTR_MMCRA)) device_create_file(s, &dev_attr_mmcra); + if (cpu_has_feature(CPU_FTR_ARCH_207S)) + device_create_file(s, &dev_attr_mmcr2); + if (cpu_has_feature(CPU_FTR_PURR)) { if (!firmware_has_feature(FW_FEATURE_LPAR)) add_write_permission_dev_attr(&dev_attr_purr);
@@ -845,6 +850,9 @@ static int unregister_cpu_online(unsigned int cpu) if (cpu_has_feature(CPU_FTR_MMCRA)) device_remove_file(s, &dev_attr_mmcra); + if (cpu_has_feature(CPU_FTR_ARCH_207S)) + device_remove_file(s, &dev_attr_mmcr2); + if (cpu_has_feature(CPU_FTR_PURR)) device_remove_file(s, &dev_attr_purr);
--
2.7.4