x86 pm : provide CC7/PC2 residency
Sandy bridge introduces new MSR to get cc7/pc2 residency (core C-state
7/package C-state 2). Print the cc7/pc2 residency when on sandy bridge platform.
Signed-off-by: Yang Zhang <yang.z.zhang@xxxxxxxxx>
diff -r 662dbf6ee71c tools/libxc/xc_pm.c
--- a/tools/libxc/xc_pm.c Mon Oct 24 18:01:07 2011 +0100
+++ b/tools/libxc/xc_pm.c Fri Oct 28 21:33:07 2011 +0800
@@ -155,11 +155,13 @@
cxpt->nr = sysctl.u.get_pmstat.u.getcx.nr;
cxpt->last = sysctl.u.get_pmstat.u.getcx.last;
cxpt->idle_time = sysctl.u.get_pmstat.u.getcx.idle_time;
+ cxpt->pc2 = sysctl.u.get_pmstat.u.getcx.pc2;
cxpt->pc3 = sysctl.u.get_pmstat.u.getcx.pc3;
cxpt->pc6 = sysctl.u.get_pmstat.u.getcx.pc6;
cxpt->pc7 = sysctl.u.get_pmstat.u.getcx.pc7;
cxpt->cc3 = sysctl.u.get_pmstat.u.getcx.cc3;
cxpt->cc6 = sysctl.u.get_pmstat.u.getcx.cc6;
+ cxpt->cc7 = sysctl.u.get_pmstat.u.getcx.cc7;
unlock_2:
xc_hypercall_bounce_post(xch, residencies);
diff -r 662dbf6ee71c tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h Mon Oct 24 18:01:07 2011 +0100
+++ b/tools/libxc/xenctrl.h Fri Oct 28 21:33:07 2011 +0800
@@ -1733,11 +1733,13 @@
uint64_t idle_time; /* idle time from boot */
uint64_t *triggers; /* Cx trigger counts */
uint64_t *residencies; /* Cx residencies */
+ uint64_t pc2;
uint64_t pc3;
uint64_t pc6;
uint64_t pc7;
uint64_t cc3;
uint64_t cc6;
+ uint64_t cc7;
};
typedef struct xc_cx_stat xc_cx_stat_t;
diff -r 662dbf6ee71c tools/misc/xenpm.c
--- a/tools/misc/xenpm.c Mon Oct 24 18:01:07 2011 +0100
+++ b/tools/misc/xenpm.c Fri Oct 28 21:33:07 2011 +0800
@@ -92,13 +92,17 @@
printf(" residency [%020"PRIu64" ms]\n",
cxstat->residencies[i]/1000000UL);
}
- printf("pc3 : [%020"PRIu64" ms]\n"
+ printf("pc2 : [%020"PRIu64" ms]\n"
+ "pc3 : [%020"PRIu64" ms]\n"
"pc6 : [%020"PRIu64" ms]\n"
"pc7 : [%020"PRIu64" ms]\n",
- cxstat->pc3/1000000UL, cxstat->pc6/1000000UL,
cxstat->pc7/1000000UL);
+ cxstat->pc2/1000000UL, cxstat->pc3/1000000UL,
+ cxstat->pc6/1000000UL, cxstat->pc7/1000000UL);
printf("cc3 : [%020"PRIu64" ms]\n"
- "cc6 : [%020"PRIu64" ms]\n",
- cxstat->cc3/1000000UL, cxstat->cc6/1000000UL);
+ "cc6 : [%020"PRIu64" ms]\n"
+ "cc7 : [%020"PRIu64" ms]\n",
+ cxstat->cc3/1000000UL, cxstat->cc6/1000000UL,
+ cxstat->cc7/1000000UL);
printf("\n");
}
@@ -458,6 +462,9 @@
break;
}
printf("Socket %d\n", socket_ids[i]);
+ res = cxstat_end[j].pc2 - cxstat_start[j].pc2;
+ printf("\tPC2\t%"PRIu64" ms\t%.2f%%\n", res / 1000000UL,
+ 100UL * res / (double)sum_cx[j]);
res = cxstat_end[j].pc3 - cxstat_start[j].pc3;
printf("\tPC3\t%"PRIu64" ms\t%.2f%%\n", res / 1000000UL,
100UL * res / (double)sum_cx[j]);
@@ -482,6 +489,9 @@
res = cxstat_end[j].cc6 - cxstat_start[j].cc6;
printf("\t\tCC6\t%"PRIu64" ms\t%.2f%%\n", res / 1000000UL,
100UL * res / (double)sum_cx[j]);
+ res = cxstat_end[j].cc7 - cxstat_start[j].cc7;
+ printf("\t\tCC7\t%"PRIu64" ms\t%.2f%%\n", res / 1000000UL,
+ 100UL * res / (double)sum_cx[j]);
printf("\n");
}
diff -r 662dbf6ee71c xen/arch/x86/acpi/cpu_idle.c
--- a/xen/arch/x86/acpi/cpu_idle.c Mon Oct 24 18:01:07 2011 +0100
+++ b/xen/arch/x86/acpi/cpu_idle.c Fri Oct 28 21:33:07 2011 +0800
@@ -60,11 +60,13 @@
#define GET_HW_RES_IN_NS(msr, val) \
do { rdmsrl(msr, val); val = tsc_ticks2ns(val); } while( 0 )
+#define GET_PC2_RES(val) GET_HW_RES_IN_NS(0x60D, val) /* SNB only */
#define GET_PC3_RES(val) GET_HW_RES_IN_NS(0x3F8, val)
#define GET_PC6_RES(val) GET_HW_RES_IN_NS(0x3F9, val)
#define GET_PC7_RES(val) GET_HW_RES_IN_NS(0x3FA, val)
#define GET_CC3_RES(val) GET_HW_RES_IN_NS(0x3FC, val)
#define GET_CC6_RES(val) GET_HW_RES_IN_NS(0x3FD, val)
+#define GET_CC7_RES(val) GET_HW_RES_IN_NS(0x3FE, val) /* SNB only */
static void lapic_timer_nop(void) { }
static void (*lapic_timer_off)(void);
@@ -85,11 +87,13 @@
struct hw_residencies
{
+ uint64_t pc2;
uint64_t pc3;
uint64_t pc6;
uint64_t pc7;
uint64_t cc3;
uint64_t cc6;
+ uint64_t cc7;
};
static void do_get_hw_residencies(void *arg)
@@ -116,6 +120,17 @@
GET_CC3_RES(hw_res->cc3);
GET_CC6_RES(hw_res->cc6);
break;
+ /* Sandy bridge */
+ case 0x2A:
+ case 0x2D:
+ GET_PC2_RES(hw_res->pc2);
+ GET_PC3_RES(hw_res->pc3);
+ GET_PC6_RES(hw_res->pc6);
+ GET_PC7_RES(hw_res->pc7);
+ GET_CC3_RES(hw_res->cc3);
+ GET_CC6_RES(hw_res->cc6);
+ GET_CC7_RES(hw_res->cc7);
+ break;
}
}
@@ -134,10 +149,10 @@
get_hw_residencies(cpu, &hw_res);
- printk("PC3[%"PRId64"] PC6[%"PRId64"] PC7[%"PRId64"]\n",
- hw_res.pc3, hw_res.pc6, hw_res.pc7);
- printk("CC3[%"PRId64"] CC6[%"PRId64"]\n",
- hw_res.cc3, hw_res.cc6);
+ printk("PC2[%"PRId64"] PC3[%"PRId64"] PC6[%"PRId64"] PC7[%"PRId64"]\n",
+ hw_res.pc2, hw_res.pc3, hw_res.pc6, hw_res.pc7);
+ printk("CC3[%"PRId64"] CC6[%"PRId64"] CC7[%"PRId64"]\n",
+ hw_res.cc3, hw_res.cc6,hw_res.cc7);
}
static char* acpi_cstate_method_name[] =
@@ -1057,11 +1072,13 @@
copy_to_guest_offset(stat->residencies, 0, &res, 1) )
return -EFAULT;
+ stat->pc2 = 0;
stat->pc3 = 0;
stat->pc6 = 0;
stat->pc7 = 0;
stat->cc3 = 0;
stat->cc6 = 0;
+ stat->cc7 = 0;
return 0;
}
@@ -1086,11 +1103,13 @@
get_hw_residencies(cpuid, &hw_res);
+ stat->pc2 = hw_res.pc2;
stat->pc3 = hw_res.pc3;
stat->pc6 = hw_res.pc6;
stat->pc7 = hw_res.pc7;
stat->cc3 = hw_res.cc3;
stat->cc6 = hw_res.cc6;
+ stat->cc7 = hw_res.cc7;
return 0;
}
diff -r 662dbf6ee71c xen/include/public/sysctl.h
--- a/xen/include/public/sysctl.h Mon Oct 24 18:01:07 2011 +0100
+++ b/xen/include/public/sysctl.h Fri Oct 28 21:33:07 2011 +0800
@@ -225,11 +225,13 @@
uint64_aligned_t idle_time; /* idle time from boot */
XEN_GUEST_HANDLE_64(uint64) triggers; /* Cx trigger counts */
XEN_GUEST_HANDLE_64(uint64) residencies; /* Cx residencies */
+ uint64_aligned_t pc2;
uint64_aligned_t pc3;
uint64_aligned_t pc6;
uint64_aligned_t pc7;
uint64_aligned_t cc3;
uint64_aligned_t cc6;
+ uint64_aligned_t cc7;
};
struct xen_sysctl_get_pmstat {
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