percpu: make percpu symbols in ia64 unique

This patch updates percpu related symbols in ia64 such that percpu
symbols are unique and don't clash with local symbols.  This serves
two purposes of decreasing the possibility of global percpu symbol
collision and allowing dropping per_cpu__ prefix from percpu symbols.

* arch/ia64/kernel/setup.c: s/cpu_info/ia64_cpu_info/

Partly based on Rusty Russell's "alloc_percpu: rename percpu vars
which cause name clashes" patch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: linux-ia64@vger.kernel.org

diff --git a/arch/ia64/include/asm/processor.h b/arch/ia64/include/asm/processor.h
index 3eaeedf1aef2cf20d5a8c707d64ddd34746c18b2..7fa90f73f6be37757e3a36ed46c85ac3ede3df77 100644 (file)
--- a/arch/ia64/include/asm/processor.h
+++ b/arch/ia64/include/asm/processor.h
@@ -229,7 +229,7 @@ struct cpuinfo_ia64 {
 #endif
 };
 
-DECLARE_PER_CPU(struct cpuinfo_ia64, cpu_info);
+DECLARE_PER_CPU(struct cpuinfo_ia64, ia64_cpu_info);
 
 /*
  * The "local" data variable.  It refers to the per-CPU data of the currently executing
@@ -237,8 +237,8 @@ DECLARE_PER_CPU(struct cpuinfo_ia64, cpu_info);
  * Do not use the address of local_cpu_data, since it will be different from
  * cpu_data(smp_processor_id())!
  */
-#define local_cpu_data         (&__ia64_per_cpu_var(cpu_info))
-#define cpu_data(cpu)          (&per_cpu(cpu_info, cpu))
+#define local_cpu_data         (&__ia64_per_cpu_var(ia64_cpu_info))
+#define cpu_data(cpu)          (&per_cpu(ia64_cpu_info, cpu))
 
 extern void print_cpu_info (struct cpuinfo_ia64 *);
 

diff --git a/arch/ia64/kernel/head.S b/arch/ia64/kernel/head.S
index 696eff28a0c44c477465314a4c3ee5daa71b4198..17a9fba38930ab0504aa7b17262765af117c2740 100644 (file)
--- a/arch/ia64/kernel/head.S
+++ b/arch/ia64/kernel/head.S
@@ -1051,7 +1051,7 @@ END(ia64_delay_loop)
  * intermediate precision so that we can produce a full 64-bit result.
  */
 GLOBAL_ENTRY(ia64_native_sched_clock)
-       addl r8=THIS_CPU(cpu_info) + IA64_CPUINFO_NSEC_PER_CYC_OFFSET,r0
+       addl r8=THIS_CPU(ia64_cpu_info) + IA64_CPUINFO_NSEC_PER_CYC_OFFSET,r0
        mov.m r9=ar.itc         // fetch cycle-counter                          (35 cyc)
        ;;
        ldf8 f8=[r8]
@@ -1077,7 +1077,7 @@ sched_clock = ia64_native_sched_clock
 #ifdef CONFIG_VIRT_CPU_ACCOUNTING
 GLOBAL_ENTRY(cycle_to_cputime)
        alloc r16=ar.pfs,1,0,0,0
-       addl r8=THIS_CPU(cpu_info) + IA64_CPUINFO_NSEC_PER_CYC_OFFSET,r0
+       addl r8=THIS_CPU(ia64_cpu_info) + IA64_CPUINFO_NSEC_PER_CYC_OFFSET,r0
        ;;
        ldf8 f8=[r8]
        ;;

diff --git a/arch/ia64/kernel/ia64_ksyms.c b/arch/ia64/kernel/ia64_ksyms.c
index 14d39e3006274fb054382505d8f0ba32959c6cb8..461b99902bf6ff2f703029c6fed6463271584048 100644 (file)
--- a/arch/ia64/kernel/ia64_ksyms.c
+++ b/arch/ia64/kernel/ia64_ksyms.c
@@ -30,7 +30,7 @@ EXPORT_SYMBOL(max_low_pfn);   /* defined by bootmem.c, but not exported by generic
 #endif
 
 #include <asm/processor.h>
-EXPORT_SYMBOL(per_cpu__cpu_info);
+EXPORT_SYMBOL(per_cpu__ia64_cpu_info);
 #ifdef CONFIG_SMP
 EXPORT_SYMBOL(per_cpu__local_per_cpu_offset);
 #endif

diff --git a/arch/ia64/kernel/mca_asm.S b/arch/ia64/kernel/mca_asm.S
index 7461d2573d41106191fe7b7a42d7cfe2d370a9bf..d5bdf9de36b6362f81a039b4494f0fa657497e87 100644 (file)
--- a/arch/ia64/kernel/mca_asm.S
+++ b/arch/ia64/kernel/mca_asm.S
@@ -59,7 +59,7 @@
 ia64_do_tlb_purge:
 #define O(member)      IA64_CPUINFO_##member##_OFFSET
 
-       GET_THIS_PADDR(r2, cpu_info)    // load phys addr of cpu_info into r2
+       GET_THIS_PADDR(r2, ia64_cpu_info) // load phys addr of cpu_info into r2
        ;;
        addl r17=O(PTCE_STRIDE),r2
        addl r2=O(PTCE_BASE),r2

diff --git a/arch/ia64/kernel/relocate_kernel.S b/arch/ia64/kernel/relocate_kernel.S
index 32f6fc131fbe2946831ee4eb2ef15d2f35bf132e..c370e02f0061fbf8414457b16dd342fbd5201872 100644 (file)
--- a/arch/ia64/kernel/relocate_kernel.S
+++ b/arch/ia64/kernel/relocate_kernel.S
@@ -61,7 +61,7 @@ GLOBAL_ENTRY(relocate_new_kernel)
 
        // purge all TC entries
 #define O(member)       IA64_CPUINFO_##member##_OFFSET
-        GET_THIS_PADDR(r2, cpu_info)    // load phys addr of cpu_info into r2
+        GET_THIS_PADDR(r2, ia64_cpu_info) // load phys addr of cpu_info into r2
         ;;
         addl r17=O(PTCE_STRIDE),r2
         addl r2=O(PTCE_BASE),r2

diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index bc1ef4ae828c93f1baa1a8446a11e9fa5e5fabde..a1ea879197770a2347ccff6ac0049146937d1ca9 100644 (file)
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -74,7 +74,7 @@ unsigned long __per_cpu_offset[NR_CPUS];
 EXPORT_SYMBOL(__per_cpu_offset);
 #endif
 
-DEFINE_PER_CPU(struct cpuinfo_ia64, cpu_info);
+DEFINE_PER_CPU(struct cpuinfo_ia64, ia64_cpu_info);
 DEFINE_PER_CPU(unsigned long, local_per_cpu_offset);
 unsigned long ia64_cycles_per_usec;
 struct ia64_boot_param *ia64_boot_param;
@@ -967,7 +967,7 @@ cpu_init (void)
         * depends on the data returned by identify_cpu().  We break the dependency by
         * accessing cpu_data() through the canonical per-CPU address.
         */
-       cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(cpu_info) - __per_cpu_start);
+       cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(ia64_cpu_info) - __per_cpu_start);
        identify_cpu(cpu_info);
 
 #ifdef CONFIG_MCKINLEY

diff --git a/arch/ia64/mm/discontig.c b/arch/ia64/mm/discontig.c
index 40e4c1fbf76bae8bdd7598080ee8dc1a76259636..19c4b2195dceef1af966bccf388c432050b1f3e3 100644 (file)
--- a/arch/ia64/mm/discontig.c
+++ b/arch/ia64/mm/discontig.c
@@ -450,7 +450,8 @@ static void __init initialize_pernode_data(void)
        /* Set the node_data pointer for each per-cpu struct */
        for_each_possible_early_cpu(cpu) {
                node = node_cpuid[cpu].nid;
-               per_cpu(cpu_info, cpu).node_data = mem_data[node].node_data;
+               per_cpu(ia64_cpu_info, cpu).node_data =
+                       mem_data[node].node_data;
        }
 #else
        {
@@ -458,7 +459,7 @@ static void __init initialize_pernode_data(void)
                cpu = 0;
                node = node_cpuid[cpu].nid;
                cpu0_cpu_info = (struct cpuinfo_ia64 *)(__phys_per_cpu_start +
-                       ((char *)&per_cpu__cpu_info - __per_cpu_start));
+                       ((char *)&per_cpu__ia64_cpu_info - __per_cpu_start));
                cpu0_cpu_info->node_data = mem_data[node].node_data;
        }
 #endif /* CONFIG_SMP */

diff --git a/arch/ia64/sn/kernel/sn2/sn2_smp.c b/arch/ia64/sn/kernel/sn2/sn2_smp.c
index 1176506b2baeb780e5cad3ba08cb533c54a801d8..e884ba4e031de4d1550cc2811a52a5a2c182db42 100644 (file)
--- a/arch/ia64/sn/kernel/sn2/sn2_smp.c
+++ b/arch/ia64/sn/kernel/sn2/sn2_smp.c
@@ -496,13 +496,13 @@ static int sn2_ptc_seq_show(struct seq_file *file, void *data)
                seq_printf(file, "cpu %d %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld %ld\n", cpu, stat->ptc_l,
                                stat->change_rid, stat->shub_ptc_flushes, stat->nodes_flushed,
                                stat->deadlocks,
-                               1000 * stat->lock_itc_clocks / per_cpu(cpu_info, cpu).cyc_per_usec,
-                               1000 * stat->shub_itc_clocks / per_cpu(cpu_info, cpu).cyc_per_usec,
-                               1000 * stat->shub_itc_clocks_max / per_cpu(cpu_info, cpu).cyc_per_usec,
+                               1000 * stat->lock_itc_clocks / per_cpu(ia64_cpu_info, cpu).cyc_per_usec,
+                               1000 * stat->shub_itc_clocks / per_cpu(ia64_cpu_info, cpu).cyc_per_usec,
+                               1000 * stat->shub_itc_clocks_max / per_cpu(ia64_cpu_info, cpu).cyc_per_usec,
                                stat->shub_ptc_flushes_not_my_mm,
                                stat->deadlocks2,
                                stat->shub_ipi_flushes,
-                               1000 * stat->shub_ipi_flushes_itc_clocks / per_cpu(cpu_info, cpu).cyc_per_usec);
+                               1000 * stat->shub_ipi_flushes_itc_clocks / per_cpu(ia64_cpu_info, cpu).cyc_per_usec);
        }
        return 0;
 }