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Message-Id: <200705291348.l4TDmajk019879@frankl.hpl.hp.com>
Date: Tue, 29 May 2007 06:48:36 -0700
From: Stephane Eranian <eranian@...nkl.hpl.hp.com>
To: linux-kernel@...r.kernel.org
Cc: eranian@....hp.com
Subject: [PATCH 21/22] 2.6.22-rc3 perfmon2 : modified mips files
This patch contains the modified mips files
Modified files are as follows:
arch/mips/Kconfig:
- add link to configuration menu in arch/mips/perfmon/Kconfig
arch/mips/Makefile:
- add perfmon subdir
arch/mips/kernel/scall32-o32.S
- add new system calls
arch/mips/kernel/scall64-64.S
- add new system calls
arch/mips/kernel/scall64-n32.S
- add new system calls
arch/mips/kernel/scall64-o32.S
- add new system calls
arch/mips/kernel/time.c
- add hook for perfmon time-base set switching
arch/mips/mips-boards/generic/time.c
- add perfmon.h header to list of includes
arch/mips/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)
arch/mips/kernel/signal.c:
- 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
include/asm-mips/system.h
- add context switch hook
asm-mips/thread_info.h
- add TIF flags
include/asm-mips/unistd.h
- add new system calls
diff --exclude=.git -urp linux-2.6.22.base/arch/mips/Kconfig linux-2.6.22/arch/mips/Kconfig
--- linux-2.6.22.base/arch/mips/Kconfig 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/mips/Kconfig 2007-05-29 03:24:14.000000000 -0700
@@ -1774,6 +1774,8 @@ config SECCOMP
If unsure, say Y. Only embedded should say N here.
+source "arch/mips/perfmon/Kconfig"
+
endmenu
config RWSEM_GENERIC_SPINLOCK
diff --exclude=.git -urp linux-2.6.22.base/arch/mips/Makefile linux-2.6.22/arch/mips/Makefile
--- linux-2.6.22.base/arch/mips/Makefile 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/mips/Makefile 2007-05-29 03:24:14.000000000 -0700
@@ -148,6 +148,12 @@ endif
endif
#
+# Perfmon support
+#
+
+core-$(CONFIG_PERFMON) += arch/mips/perfmon/
+
+#
# Firmware support
#
libs-$(CONFIG_ARC) += arch/mips/arc/
diff --exclude=.git -urp linux-2.6.22.base/arch/mips/kernel/process.c linux-2.6.22/arch/mips/kernel/process.c
--- linux-2.6.22.base/arch/mips/kernel/process.c 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/mips/kernel/process.c 2007-05-29 03:24:14.000000000 -0700
@@ -25,6 +25,7 @@
#include <linux/init.h>
#include <linux/completion.h>
#include <linux/kallsyms.h>
+#include <linux/perfmon.h>
#include <asm/bootinfo.h>
#include <asm/cpu.h>
@@ -90,6 +91,7 @@ void start_thread(struct pt_regs * regs,
void exit_thread(void)
{
+ pfm_exit_thread(current);
}
void flush_thread(void)
@@ -164,6 +166,8 @@ int copy_thread(int nr, unsigned long cl
if (clone_flags & CLONE_SETTLS)
ti->tp_value = regs->regs[7];
+ pfm_copy_thread(p);
+
return 0;
}
diff --exclude=.git -urp linux-2.6.22.base/arch/mips/kernel/scall32-o32.S linux-2.6.22/arch/mips/kernel/scall32-o32.S
--- linux-2.6.22.base/arch/mips/kernel/scall32-o32.S 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/mips/kernel/scall32-o32.S 2007-05-29 03:24:14.000000000 -0700
@@ -657,7 +657,19 @@ einval: li v0, -EINVAL
sys sys_getcpu 3
sys sys_epoll_pwait 6
sys sys_ioprio_set 3
- sys sys_ioprio_get 2
+ sys sys_ioprio_get 2 /* 4315 */
+ sys sys_pfm_create_context 4
+ sys sys_pfm_write_pmcs 3
+ sys sys_pfm_write_pmds 4
+ sys sys_pfm_read_pmds 3
+ sys sys_pfm_load_context 2 /* 4320 */
+ sys sys_pfm_start 2
+ sys sys_pfm_stop 1
+ sys sys_pfm_restart 1
+ sys sys_pfm_create_evtsets 3
+ sys sys_pfm_getinfo_evtsets 3 /* 4325 */
+ sys sys_pfm_delete_evtsets 3
+ sys sys_pfm_unload_context 1
.endm
/* We pre-compute the number of _instruction_ bytes needed to
diff --exclude=.git -urp linux-2.6.22.base/arch/mips/kernel/scall64-64.S linux-2.6.22/arch/mips/kernel/scall64-64.S
--- linux-2.6.22.base/arch/mips/kernel/scall64-64.S 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/mips/kernel/scall64-64.S 2007-05-29 03:24:14.000000000 -0700
@@ -473,4 +473,16 @@ sys_call_table:
PTR sys_epoll_pwait
PTR sys_ioprio_set
PTR sys_ioprio_get
+ PTR sys_pfm_create_context /* 5275 */
+ PTR sys_pfm_write_pmcs
+ PTR sys_pfm_write_pmds
+ PTR sys_pfm_read_pmds
+ PTR sys_pfm_load_context
+ PTR sys_pfm_start /* 5280 */
+ PTR sys_pfm_stop
+ PTR sys_pfm_restart
+ PTR sys_pfm_create_evtsets
+ PTR sys_pfm_getinfo_evtsets
+ PTR sys_pfm_delete_evtsets /* 5285 */
+ PTR sys_pfm_unload_context
.size sys_call_table,.-sys_call_table
diff --exclude=.git -urp linux-2.6.22.base/arch/mips/kernel/scall64-n32.S linux-2.6.22/arch/mips/kernel/scall64-n32.S
--- linux-2.6.22.base/arch/mips/kernel/scall64-n32.S 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/mips/kernel/scall64-n32.S 2007-05-29 03:24:14.000000000 -0700
@@ -399,4 +399,16 @@ EXPORT(sysn32_call_table)
PTR compat_sys_epoll_pwait
PTR sys_ioprio_set
PTR sys_ioprio_get
+ PTR sys_pfm_create_context
+ PTR sys_pfm_write_pmcs /* 6280 */
+ PTR sys_pfm_write_pmds
+ PTR sys_pfm_read_pmds
+ PTR sys_pfm_load_context
+ PTR sys_pfm_start
+ PTR sys_pfm_stop /* 6285 */
+ PTR sys_pfm_restart
+ PTR sys_pfm_create_evtsets
+ PTR sys_pfm_getinfo_evtsets
+ PTR sys_pfm_delete_evtsets
+ PTR sys_pfm_unload_context /* 6290 */
.size sysn32_call_table,.-sysn32_call_table
diff --exclude=.git -urp linux-2.6.22.base/arch/mips/kernel/scall64-o32.S linux-2.6.22/arch/mips/kernel/scall64-o32.S
--- linux-2.6.22.base/arch/mips/kernel/scall64-o32.S 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/mips/kernel/scall64-o32.S 2007-05-29 03:24:14.000000000 -0700
@@ -521,4 +521,16 @@ sys_call_table:
PTR compat_sys_epoll_pwait
PTR sys_ioprio_set
PTR sys_ioprio_get /* 4315 */
+ PTR sys_pfm_create_context
+ PTR sys_pfm_write_pmcs
+ PTR sys_pfm_write_pmds
+ PTR sys_pfm_read_pmds
+ PTR sys_pfm_load_context /* 4320 */
+ PTR sys_pfm_start
+ PTR sys_pfm_stop
+ PTR sys_pfm_restart
+ PTR sys_pfm_create_evtsets
+ PTR sys_pfm_getinfo_evtsets /* 4325 */
+ PTR sys_pfm_delete_evtsets
+ PTR sys_pfm_unload_context
.size sys_call_table,.-sys_call_table
diff --exclude=.git -urp linux-2.6.22.base/arch/mips/kernel/signal.c linux-2.6.22/arch/mips/kernel/signal.c
--- linux-2.6.22.base/arch/mips/kernel/signal.c 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/mips/kernel/signal.c 2007-05-29 03:24:14.000000000 -0700
@@ -20,6 +20,7 @@
#include <linux/unistd.h>
#include <linux/compiler.h>
#include <linux/uaccess.h>
+#include <linux/perfmon.h>
#include <asm/abi.h>
#include <asm/asm.h>
@@ -696,6 +697,9 @@ static void do_signal(struct pt_regs *re
asmlinkage void do_notify_resume(struct pt_regs *regs, void *unused,
__u32 thread_info_flags)
{
+ if (thread_info_flags & _TIF_PERFMON_WORK)
+ pfm_handle_work(regs);
+
/* deal with pending signal delivery */
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
do_signal(regs);
diff --exclude=.git -urp linux-2.6.22.base/arch/mips/kernel/time.c linux-2.6.22/arch/mips/kernel/time.c
--- linux-2.6.22.base/arch/mips/kernel/time.c 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/mips/kernel/time.c 2007-05-29 03:24:14.000000000 -0700
@@ -23,6 +23,7 @@
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/module.h>
+#include <linux/perfmon.h>
#include <asm/bootinfo.h>
#include <asm/cache.h>
@@ -140,6 +141,7 @@ static long last_rtc_update;
void local_timer_interrupt(int irq, void *dev_id)
{
profile_tick(CPU_PROFILING);
+ pfm_handle_switch_timeout();
update_process_times(user_mode(get_irq_regs()));
}
diff --exclude=.git -urp linux-2.6.22.base/arch/mips/mips-boards/generic/time.c linux-2.6.22/arch/mips/mips-boards/generic/time.c
--- linux-2.6.22.base/arch/mips/mips-boards/generic/time.c 2007-05-29 03:17:16.000000000 -0700
+++ linux-2.6.22/arch/mips/mips-boards/generic/time.c 2007-05-29 03:24:14.000000000 -0700
@@ -27,6 +27,7 @@
#include <linux/time.h>
#include <linux/timex.h>
#include <linux/mc146818rtc.h>
+#include <linux/perfmon.h>
#include <asm/mipsregs.h>
#include <asm/mipsmtregs.h>
Only in linux-2.6.22/arch/mips: perfmon
Only in linux-2.6.22/include/asm-mips: perfmon.h
Only in linux-2.6.22/include/asm-mips: perfmon_api.h
diff --exclude=.git -urp linux-2.6.22.base/include/asm-mips/system.h linux-2.6.22/include/asm-mips/system.h
--- linux-2.6.22.base/include/asm-mips/system.h 2007-05-29 03:17:57.000000000 -0700
+++ linux-2.6.22/include/asm-mips/system.h 2007-05-29 03:24:14.000000000 -0700
@@ -65,6 +65,9 @@ do { \
do { \
if (cpu_has_dsp) \
__save_dsp(prev); \
+ if (test_tsk_thread_flag(prev, TIF_PERFMON_CTXSW) \
+ || test_tsk_thread_flag(next, TIF_PERFMON_CTXSW)) \
+ pfm_ctxsw(prev, next); \
(last) = resume(prev, next, task_thread_info(next)); \
if (cpu_has_dsp) \
__restore_dsp(current); \
diff --exclude=.git -urp linux-2.6.22.base/include/asm-mips/thread_info.h linux-2.6.22/include/asm-mips/thread_info.h
--- linux-2.6.22.base/include/asm-mips/thread_info.h 2007-05-29 03:20:21.000000000 -0700
+++ linux-2.6.22/include/asm-mips/thread_info.h 2007-05-29 03:24:14.000000000 -0700
@@ -113,11 +113,13 @@ register struct thread_info *__current_t
#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
#define TIF_SYSCALL_AUDIT 3 /* syscall auditing active */
#define TIF_SECCOMP 4 /* secure computing */
-#define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal() */
+#define TIF_RESTORE_SIGMASK 5 /* restore signal mask in do_signal() */
+#define TIF_PERFMON_WORK 6 /* work for pfm_handle_work() */
#define TIF_USEDFPU 16 /* FPU was used by this task this quantum (SMP) */
#define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling TIF_NEED_RESCHED */
#define TIF_MEMDIE 18
#define TIF_FREEZE 19
+#define TIF_PERFMON_CTXSW 21 /* perfmon needs ctxsw calls */
#define TIF_SYSCALL_TRACE 31 /* syscall trace active */
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
@@ -129,6 +131,8 @@ register struct thread_info *__current_t
#define _TIF_USEDFPU (1<<TIF_USEDFPU)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
#define _TIF_FREEZE (1<<TIF_FREEZE)
+#define _TIF_PERFMON_WORK (1<<TIF_PERFMON_WORK)
+#define _TIF_PERFMON_CTXSW (1<<TIF_PERFMON_CTXSW)
/* work to do on interrupt/exception return */
#define _TIF_WORK_MASK (0x0000ffef & ~_TIF_SECCOMP)
diff --exclude=.git -urp linux-2.6.22.base/include/asm-mips/unistd.h linux-2.6.22/include/asm-mips/unistd.h
--- linux-2.6.22.base/include/asm-mips/unistd.h 2007-05-29 03:17:57.000000000 -0700
+++ linux-2.6.22/include/asm-mips/unistd.h 2007-05-29 03:24:14.000000000 -0700
@@ -336,16 +336,28 @@
#define __NR_epoll_pwait (__NR_Linux + 313)
#define __NR_ioprio_set (__NR_Linux + 314)
#define __NR_ioprio_get (__NR_Linux + 315)
-
+#define __NR_pfm_create_context (__NR_Linux + 316)
+#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)
+
/*
* Offset of the last Linux o32 flavoured syscall
*/
-#define __NR_Linux_syscalls 315
+#define __NR_Linux_syscalls 327
#endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
#define __NR_O32_Linux 4000
-#define __NR_O32_Linux_syscalls 315
+#define __NR_O32_Linux_syscalls 327
#if _MIPS_SIM == _MIPS_SIM_ABI64
@@ -628,16 +640,28 @@
#define __NR_epoll_pwait (__NR_Linux + 272)
#define __NR_ioprio_set (__NR_Linux + 273)
#define __NR_ioprio_get (__NR_Linux + 274)
-
+#define __NR_pfm_create_context (__NR_Linux + 275)
+#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)
+
/*
* Offset of the last Linux 64-bit flavoured syscall
*/
-#define __NR_Linux_syscalls 274
+#define __NR_Linux_syscalls 286
#endif /* _MIPS_SIM == _MIPS_SIM_ABI64 */
#define __NR_64_Linux 5000
-#define __NR_64_Linux_syscalls 274
+#define __NR_64_Linux_syscalls 286
#if _MIPS_SIM == _MIPS_SIM_NABI32
@@ -924,16 +948,28 @@
#define __NR_epoll_pwait (__NR_Linux + 276)
#define __NR_ioprio_set (__NR_Linux + 277)
#define __NR_ioprio_get (__NR_Linux + 278)
-
+#define __NR_pfm_create_context (__NR_Linux + 279)
+#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)
+
/*
* Offset of the last N32 flavoured syscall
*/
-#define __NR_Linux_syscalls 278
+#define __NR_Linux_syscalls 290
#endif /* _MIPS_SIM == _MIPS_SIM_NABI32 */
#define __NR_N32_Linux 6000
-#define __NR_N32_Linux_syscalls 278
+#define __NR_N32_Linux_syscalls 290
#ifdef __KERNEL__
-
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