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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-11 20:34:00 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-11 20:34:00 -0400
commitfd9879b9bb3258ebc27a4cc6d2d29f528f71901f (patch)
tree48b68994f5e8083aafe116533e8143cb2bf30c85 /arch/powerpc/platforms/pseries/dlpar.c
parentMerge tag 'stable/for-linus-3.18-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip (diff)
parentcxl: Fix afu_read() not doing finish_wait() on signal or non-blocking (diff)
downloadlinux-dev-fd9879b9bb3258ebc27a4cc6d2d29f528f71901f.tar.xz
linux-dev-fd9879b9bb3258ebc27a4cc6d2d29f528f71901f.zip
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull powerpc updates from Michael Ellerman: "Here's a first pull request for powerpc updates for 3.18. The bulk of the additions are for the "cxl" driver, for IBM's Coherent Accelerator Processor Interface (CAPI). Most of it's in drivers/misc, which Greg & Arnd maintain, Greg said he was happy for us to take it through our tree. There's the usual minor cleanups and fixes, including a bit of noise in drivers from some of those. A bunch of updates to our EEH code, which has been getting more testing. Several nice speedups from Anton, including 20% in clear_page(). And a bunch of updates for freescale from Scott" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (130 commits) cxl: Fix afu_read() not doing finish_wait() on signal or non-blocking cxl: Add documentation for userspace APIs cxl: Add driver to Kbuild and Makefiles cxl: Add userspace header file cxl: Driver code for powernv PCIe based cards for userspace access cxl: Add base builtin support powerpc/mm: Add hooks for cxl powerpc/opal: Add PHB to cxl mode call powerpc/mm: Add new hash_page_mm() powerpc/powerpc: Add new PCIe functions for allocating cxl interrupts cxl: Add new header for call backs and structs powerpc/powernv: Split out set MSI IRQ chip code powerpc/mm: Export mmu_kernel_ssize and mmu_linear_psize powerpc/msi: Improve IRQ bitmap allocator powerpc/cell: Make spu_flush_all_slbs() generic powerpc/cell: Move data segment faulting code out of cell platform powerpc/cell: Move spu_handle_mm_fault() out of cell platform powerpc/pseries: Use new defines when calling H_SET_MODE powerpc: Update contact info in Documentation files powerpc/perf/hv-24x7: Simplify catalog_read() ...
Diffstat (limited to 'arch/powerpc/platforms/pseries/dlpar.c')
-rw-r--r--arch/powerpc/platforms/pseries/dlpar.c29
1 files changed, 17 insertions, 12 deletions
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index a2450b8a50a5..fdf01b660d59 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -17,6 +17,7 @@
#include <linux/slab.h>
#include <linux/of.h>
#include "offline_states.h"
+#include "pseries.h"
#include <asm/prom.h>
#include <asm/machdep.h>
@@ -363,7 +364,8 @@ static int dlpar_online_cpu(struct device_node *dn)
int rc = 0;
unsigned int cpu;
int len, nthreads, i;
- const u32 *intserv;
+ const __be32 *intserv;
+ u32 thread;
intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len);
if (!intserv)
@@ -373,8 +375,9 @@ static int dlpar_online_cpu(struct device_node *dn)
cpu_maps_update_begin();
for (i = 0; i < nthreads; i++) {
+ thread = be32_to_cpu(intserv[i]);
for_each_present_cpu(cpu) {
- if (get_hard_smp_processor_id(cpu) != intserv[i])
+ if (get_hard_smp_processor_id(cpu) != thread)
continue;
BUG_ON(get_cpu_current_state(cpu)
!= CPU_STATE_OFFLINE);
@@ -388,7 +391,7 @@ static int dlpar_online_cpu(struct device_node *dn)
}
if (cpu == num_possible_cpus())
printk(KERN_WARNING "Could not find cpu to online "
- "with physical id 0x%x\n", intserv[i]);
+ "with physical id 0x%x\n", thread);
}
cpu_maps_update_done();
@@ -442,7 +445,8 @@ static int dlpar_offline_cpu(struct device_node *dn)
int rc = 0;
unsigned int cpu;
int len, nthreads, i;
- const u32 *intserv;
+ const __be32 *intserv;
+ u32 thread;
intserv = of_get_property(dn, "ibm,ppc-interrupt-server#s", &len);
if (!intserv)
@@ -452,8 +456,9 @@ static int dlpar_offline_cpu(struct device_node *dn)
cpu_maps_update_begin();
for (i = 0; i < nthreads; i++) {
+ thread = be32_to_cpu(intserv[i]);
for_each_present_cpu(cpu) {
- if (get_hard_smp_processor_id(cpu) != intserv[i])
+ if (get_hard_smp_processor_id(cpu) != thread)
continue;
if (get_cpu_current_state(cpu) == CPU_STATE_OFFLINE)
@@ -475,14 +480,14 @@ static int dlpar_offline_cpu(struct device_node *dn)
* Upgrade it's state to CPU_STATE_OFFLINE.
*/
set_preferred_offline_state(cpu, CPU_STATE_OFFLINE);
- BUG_ON(plpar_hcall_norets(H_PROD, intserv[i])
+ BUG_ON(plpar_hcall_norets(H_PROD, thread)
!= H_SUCCESS);
__cpu_die(cpu);
break;
}
if (cpu == num_possible_cpus())
printk(KERN_WARNING "Could not find cpu to offline "
- "with physical id 0x%x\n", intserv[i]);
+ "with physical id 0x%x\n", thread);
}
cpu_maps_update_done();
@@ -494,15 +499,15 @@ out:
static ssize_t dlpar_cpu_release(const char *buf, size_t count)
{
struct device_node *dn;
- const u32 *drc_index;
+ u32 drc_index;
int rc;
dn = of_find_node_by_path(buf);
if (!dn)
return -EINVAL;
- drc_index = of_get_property(dn, "ibm,my-drc-index", NULL);
- if (!drc_index) {
+ rc = of_property_read_u32(dn, "ibm,my-drc-index", &drc_index);
+ if (rc) {
of_node_put(dn);
return -EINVAL;
}
@@ -513,7 +518,7 @@ static ssize_t dlpar_cpu_release(const char *buf, size_t count)
return -EINVAL;
}
- rc = dlpar_release_drc(*drc_index);
+ rc = dlpar_release_drc(drc_index);
if (rc) {
of_node_put(dn);
return rc;
@@ -521,7 +526,7 @@ static ssize_t dlpar_cpu_release(const char *buf, size_t count)
rc = dlpar_detach_node(dn);
if (rc) {
- dlpar_acquire_drc(*drc_index);
+ dlpar_acquire_drc(drc_index);
return rc;
}