This patch contains the modified powerpc files.
The modified files are as follows:
arch/powerpc/Kconfig:
- add link to perfmon menuconfig options
arch/powerpc/Makefile:
- add perfmon subdir
arch/powerpc/kernel/entry_64.S:
- add hook for extra work before kernel exit. Need to block a thread after a overflow with
user level notification. Also needed to do some bookeeeping, such as reset certain counters
and cleanup in some difficult corner cases
arch/powerpc/kernel/process.c:
- add hook in exit_thread() to cleanup perfmon2 context
- add hook in copy_thread() to cleanup perfmon2 context in child (perfmon2 context
is never inherited)
- add hook in __switch_to() for PMU state save/restore
arch/powerpc/kernel/systbl.S:
- add new system calls definitions
include/asm-powerpc/thread_info.h:
- add TIF_PERFMON which is used for PMU context switching in __switch_to()
include/asm-powerpc/unistd.h:
- add new system calls
diff --exclude=.git -urp linux-2.6.22.base/arch/powerpc/Kconfig linux-2.6.22/arch/powerpc/Kconfig
--- linux-2.6.22.base/arch/powerpc/Kconfig 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/powerpc/Kconfig 2007-05-29 03:24:14.000000000 -0700
@@ -392,6 +392,9 @@ config NOT_COHERENT_CACHE
config CONFIG_CHECK_CACHE_COHERENCY
bool
+
+source "arch/powerpc/perfmon/Kconfig"
+
endmenu
source "init/Kconfig"
diff --exclude=.git -urp linux-2.6.22.base/arch/powerpc/Makefile linux-2.6.22/arch/powerpc/Makefile
--- linux-2.6.22.base/arch/powerpc/Makefile 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/powerpc/Makefile 2007-05-29 03:24:14.000000000 -0700
@@ -137,6 +137,7 @@ core-y += arch/powerpc/kernel/ \
arch/powerpc/platforms/
core-$(CONFIG_MATH_EMULATION) += arch/powerpc/math-emu/
core-$(CONFIG_XMON) += arch/powerpc/xmon/
+core-$(CONFIG_PERFMON) += arch/powerpc/perfmon/
drivers-$(CONFIG_OPROFILE) += arch/powerpc/oprofile/
diff --exclude=.git -urp linux-2.6.22.base/arch/powerpc/kernel/entry_32.S linux-2.6.22/arch/powerpc/kernel/entry_32.S
--- linux-2.6.22.base/arch/powerpc/kernel/entry_32.S 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/powerpc/kernel/entry_32.S 2007-05-29 03:24:14.000000000 -0700
@@ -38,7 +38,7 @@
* MSR_KERNEL is > 0x10000 on 4xx/Book-E since it include MSR_CE.
*/
#if MSR_KERNEL >= 0x10000
-#define LOAD_MSR_KERNEL(r, x) lis r,(x)@h; ori r,r,(x)@l
+#define LOAD_MSR_KERNEL(r, x) lis r,(x)@ha; ori r,r,(x)@l
#else
#define LOAD_MSR_KERNEL(r, x) li r,(x)
#endif
diff --exclude=.git -urp linux-2.6.22.base/arch/powerpc/kernel/entry_64.S linux-2.6.22/arch/powerpc/kernel/entry_64.S
--- linux-2.6.22.base/arch/powerpc/kernel/entry_64.S 2007-05-29 03:20:21.000000000 -0700
+++ linux-2.6.22/arch/powerpc/kernel/entry_64.S 2007-05-29 03:24:14.000000000 -0700
@@ -587,6 +587,10 @@ user_work:
b .ret_from_except_lite
1: bl .save_nvgprs
+#ifdef CONFIG_PERFMON
+ addi r3,r1,STACK_FRAME_OVERHEAD
+ bl .__pfm_handle_work
+#endif /* CONFIG_PERFMON */
li r3,0
addi r4,r1,STACK_FRAME_OVERHEAD
bl .do_signal
diff --exclude=.git -urp linux-2.6.22.base/arch/powerpc/kernel/process.c linux-2.6.22/arch/powerpc/kernel/process.c
--- linux-2.6.22.base/arch/powerpc/kernel/process.c 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/powerpc/kernel/process.c 2007-05-29 03:24:14.000000000 -0700
@@ -33,6 +33,7 @@
#include <linux/mqueue.h>
#include <linux/hardirq.h>
#include <linux/utsname.h>
+#include <linux/perfmon.h>
#include <asm/pgtable.h>
#include <asm/uaccess.h>
@@ -322,6 +323,9 @@ struct task_struct *__switch_to(struct t
new_thread->start_tb = current_tb;
}
#endif
+ if (test_tsk_thread_flag(new, TIF_PERFMON_CTXSW)
+ || test_tsk_thread_flag(prev, TIF_PERFMON_CTXSW))
+ pfm_ctxsw(prev, new);
local_irq_save(flags);
@@ -455,6 +459,7 @@ void show_regs(struct pt_regs * regs)
void exit_thread(void)
{
discard_lazy_cpu_state();
+ pfm_exit_thread(current);
}
void flush_thread(void)
@@ -570,6 +575,7 @@ int copy_thread(int nr, unsigned long cl
#else
kregs->nip = (unsigned long)ret_from_fork;
#endif
+ pfm_copy_thread(p);
return 0;
}
Only in linux-2.6.22/arch/powerpc: perfmon
Only in linux-2.6.22/include/asm-powerpc: perfmon.h
Only in linux-2.6.22/include/asm-powerpc: perfmon_api.h
diff --exclude=.git -urp linux-2.6.22.base/include/asm-powerpc/systbl.h linux-2.6.22/include/asm-powerpc/systbl.h
--- linux-2.6.22.base/include/asm-powerpc/systbl.h 2007-05-29 03:17:57.000000000 -0700
+++ linux-2.6.22/include/asm-powerpc/systbl.h 2007-05-29 03:24:14.000000000 -0700
@@ -311,3 +311,15 @@ COMPAT_SYS_SPU(utimensat)
COMPAT_SYS_SPU(signalfd)
COMPAT_SYS_SPU(timerfd)
SYSCALL_SPU(eventfd)
+SYSCALL(pfm_create_context)
+SYSCALL(pfm_write_pmcs)
+SYSCALL(pfm_write_pmds)
+SYSCALL(pfm_read_pmds)
+SYSCALL(pfm_load_context)
+SYSCALL(pfm_start)
+SYSCALL(pfm_stop)
+SYSCALL(pfm_restart)
+SYSCALL(pfm_create_evtsets)
+SYSCALL(pfm_getinfo_evtsets)
+SYSCALL(pfm_delete_evtsets)
+SYSCALL(pfm_unload_context)
diff --exclude=.git -urp linux-2.6.22.base/include/asm-powerpc/thread_info.h linux-2.6.22/include/asm-powerpc/thread_info.h
--- linux-2.6.22.base/include/asm-powerpc/thread_info.h 2007-05-29 03:20:21.000000000 -0700
+++ linux-2.6.22/include/asm-powerpc/thread_info.h 2007-05-29 03:24:14.000000000 -0700
@@ -112,16 +112,18 @@ static inline struct thread_info *curren
#define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling
TIF_NEED_RESCHED */
#define TIF_32BIT 4 /* 32 bit binary */
-#define TIF_RUNLATCH 5 /* Is the runlatch enabled? */
-#define TIF_ABI_PENDING 6 /* 32/64 bit switch needed */
+#define TIF_PERFMON_WORK 5 /* work for pfm_handle_work() */
+#define TIF_PERFMON_CTXSW 6 /* perfmon needs ctxsw calls */
#define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */
#define TIF_SINGLESTEP 8 /* singlestepping active */
#define TIF_MEMDIE 9
#define TIF_SECCOMP 10 /* secure computing */
#define TIF_RESTOREALL 11 /* Restore all regs (implies NOERROR) */
-#define TIF_NOERROR 14 /* Force successful syscall return */
-#define TIF_RESTORE_SIGMASK 15 /* Restore signal mask in do_signal */
-#define TIF_FREEZE 16 /* Freezing for suspend */
+#define TIF_NOERROR 12 /* Force successful syscall return */
+#define TIF_RESTORE_SIGMASK 13 /* Restore signal mask in do_signal */
+#define TIF_FREEZE 14 /* Freezing for suspend */
+#define TIF_RUNLATCH 15 /* Is the runlatch enabled? */
+#define TIF_ABI_PENDING 16 /* 32/64 bit switch needed */
/* as above, but as bit values */
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
@@ -129,8 +131,8 @@ static inline struct thread_info *curren
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
#define _TIF_32BIT (1<<TIF_32BIT)
-#define _TIF_RUNLATCH (1<<TIF_RUNLATCH)
-#define _TIF_ABI_PENDING (1<<TIF_ABI_PENDING)
+#define _TIF_PERFMON_WORK (1<<TIF_PERFMON_WORK)
+#define _TIF_PERFMON_CTXSW (1<<TIF_PERFMON_CTXSW)
#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
#define _TIF_SECCOMP (1<<TIF_SECCOMP)
@@ -138,10 +140,14 @@ static inline struct thread_info *curren
#define _TIF_NOERROR (1<<TIF_NOERROR)
#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
#define _TIF_FREEZE (1<<TIF_FREEZE)
+#define _TIF_RUNLATCH (1<<TIF_RUNLATCH)
+#define _TIF_ABI_PENDING (1<<TIF_ABI_PENDING)
#define _TIF_SYSCALL_T_OR_A (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP)
+#define _TIF_PERFMON_WORK (1<<TIF_PERFMON_WORK)
+#define _TIF_PERFMON_CTXSW (1<<TIF_PERFMON_CTXSW)
-#define _TIF_USER_WORK_MASK ( _TIF_SIGPENDING | \
- _TIF_NEED_RESCHED | _TIF_RESTORE_SIGMASK)
+#define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | \
+ _TIF_NEED_RESCHED | _TIF_RESTORE_SIGMASK| _TIF_PERFMON_WORK)
#define _TIF_PERSYSCALL_MASK (_TIF_RESTOREALL|_TIF_NOERROR)
/* Bits in local_flags */
diff --exclude=.git -urp linux-2.6.22.base/include/asm-powerpc/unistd.h linux-2.6.22/include/asm-powerpc/unistd.h
--- linux-2.6.22.base/include/asm-powerpc/unistd.h 2007-05-29 03:17:57.000000000 -0700
+++ linux-2.6.22/include/asm-powerpc/unistd.h 2007-05-29 03:24:14.000000000 -0700
@@ -330,10 +330,22 @@
#define __NR_signalfd 305
#define __NR_timerfd 306
#define __NR_eventfd 307
+#define __NR_pfm_create_context 308
+#define __NR_pfm_write_pmcs (__NR_pfm_create_context+1)
+#define __NR_pfm_write_pmds (__NR_pfm_create_context+2)
+#define __NR_pfm_read_pmds (__NR_pfm_create_context+3)
+#define __NR_pfm_load_context (__NR_pfm_create_context+4)
+#define __NR_pfm_start (__NR_pfm_create_context+5)
+#define __NR_pfm_stop (__NR_pfm_create_context+6)
+#define __NR_pfm_restart (__NR_pfm_create_context+7)
+#define __NR_pfm_create_evtsets (__NR_pfm_create_context+8)
+#define __NR_pfm_getinfo_evtsets (__NR_pfm_create_context+9)
+#define __NR_pfm_delete_evtsets (__NR_pfm_create_context+10)
+#define __NR_pfm_unload_context (__NR_pfm_create_context+11)
#ifdef __KERNEL__
-#define __NR_syscalls 308
+#define __NR_syscalls 319
#define __NR__exit __NR_exit
#define NR_syscalls __NR_syscalls
-
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