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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 1 of 2] xenalyze: decode PV_HYPERCALL_V2 records
Newer version of Xen produce TRC_PV_HYPERCALL_V2 records instead of
the older TRC_PV_HYPERCALL format. This updated format doesn't
included the IP but it does include select hypercall arguments.
Signed-off-by: David Vrabel <david.vrabel@xxxxxxxxxx>
diff --git a/analyze.h b/analyze.h
--- a/analyze.h
+++ b/analyze.h
@@ -3,6 +3,8 @@
#include <stdint.h>
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
#define TRC_GEN_MAIN 0
#define TRC_SCHED_MAIN 1
#define TRC_DOM0OP_MAIN 2
diff --git a/pv.h b/pv.h
new file mode 100644
--- /dev/null
+++ b/pv.h
@@ -0,0 +1,41 @@
+/*
+ * PV event decoding.
+ *
+ * Copyright (C) 2012 Citrix Systems R&D Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+#ifndef __PV_H
+
+#include "analyze.h"
+#include "trace.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ARG_MISSING 0x0
+#define ARG_32BIT 0x1
+#define ARG_64BIT 0x2
+
+#define MMU_UPDATE_PREEMPTED (~(~0U>>1))
+
+static inline uint32_t pv_hypercall_op(const struct record_info *ri)
+{
+ return ri->d[0] & ~TRC_PV_HYPERCALL_V2_ARG_MASK;
+}
+
+static inline int pv_hypercall_arg_present(const struct record_info *ri, int
arg)
+{
+ return (ri->d[0] >> (20 + 2*arg)) & 0x3;
+}
+
+void pv_hypercall_gather_args(const struct record_info *ri, uint64_t *args);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif
diff --git a/xenalyze.c b/xenalyze.c
--- a/xenalyze.c
+++ b/xenalyze.c
@@ -32,6 +32,7 @@
#include "trace.h"
#include "analyze.h"
#include "mread.h"
+#include "pv.h"
#include <errno.h>
#include <strings.h>
#include <string.h>
@@ -1485,6 +1486,7 @@ enum {
PV_GDT_LDT_MAPPING_FAULT,
PV_PTWR_EMULATION,
PV_PTWR_EMULATION_PAE,
+ PV_HYPERCALL_V2 = 13,
PV_MAX
};
@@ -1499,7 +1501,9 @@ char *pv_name[PV_MAX] = {
[PV_PAGING_FIXUP]="paging fixup",
[PV_GDT_LDT_MAPPING_FAULT]="gdt/ldt mapping fault",
[PV_PTWR_EMULATION]="ptwr",
- [PV_PTWR_EMULATION_PAE]="ptwr(pae)"
+ [PV_PTWR_EMULATION_PAE]="ptwr(pae)",
+ [PV_HYPERCALL_V2]="hypercall",
+ [PV_HYPERCALL_SUBCALL]="hypercall (subcall)",
};
#define PV_HYPERCALL_MAX 56
@@ -6500,10 +6504,20 @@ void pv_summary(struct pv_data *pv) {
printf("PV events:\n");
for(i=0; i<PV_MAX; i++) {
- if(pv->count[i])
- printf(" %s %d\n", pv_name[i], pv->count[i]);
+ int count;
+
+ count = pv->count[i];
+ if (i == PV_HYPERCALL_V2)
+ count += pv->count[PV_HYPERCALL_SUBCALL];
+
+ if (count == 0)
+ continue;
+
+ printf(" %s %d\n", pv_name[i], count);
+
switch(i) {
case PV_HYPERCALL:
+ case PV_HYPERCALL_V2:
for(j=0; j<PV_HYPERCALL_MAX; j++) {
if(pv->hypercall_count[j])
printf(" %-29s[%2d]: %6d\n",
@@ -6523,6 +6537,145 @@ void pv_summary(struct pv_data *pv) {
}
}
+static const char *grant_table_op_str[] = {
+ "map_grant_ref", "unmap_grant_ref", "setup_table", "dump_table",
+ "transfer", "copy", "query_size", "unmap_and_replace",
+ "set_version", "get_status_frames", "get_version", "swap_grant_ref",
+};
+
+static const char *vcpu_op_str[] = {
+ "initialise", "up", "down", "is_up", "get_runstate_info",
+ "register_runstate_memory_area", "set_periodic_timer",
+ "stop_periodic_timer", "set_singleshot_timer", "stop_singleshot_timer",
+ "register_vcpu_info", "send_nmi", "get_physid",
+ "register_vcpu_time_memory_area",
+};
+
+static const char *sched_op_str[] = {
+ "yield", "block", "shutdown", "poll", "remote_shutdown", "shutdown_code",
+ "watchdog",
+};
+
+static const char *cmd_to_str(const char *strings[], size_t n, uint32_t cmd)
+{
+ static char buf[32];
+
+ if (cmd < n)
+ return strings[cmd];
+
+ snprintf(buf, sizeof(buf), "unknown (%d)", cmd);
+ return buf;
+}
+
+#define CMD_TO_STR(op) \
+ static const char * op ## _to_str(uint32_t cmd) { \
+ return cmd_to_str(op ## _str, ARRAY_SIZE(op ## _str), cmd); \
+ }
+
+CMD_TO_STR(grant_table_op);
+CMD_TO_STR(vcpu_op);
+CMD_TO_STR(sched_op);
+
+void pv_hypercall_gather_args(const struct record_info *ri, uint64_t *args)
+{
+ int i, word;
+
+ /* Missing arguments are zeroed. */
+ memset(args, 0, 6 * sizeof(uint64_t));
+
+ for (i = 0, word = 1; i < 6 && word < ri->extra_words; i++) {
+ int present = pv_hypercall_arg_present(ri, i);
+
+ switch (present) {
+ case ARG_32BIT:
+ args[i] = ri->d[word];
+ break;
+ case ARG_64BIT:
+ args[i] = ((uint64_t)ri->d[word + 1] << 32) | ri->d[word];
+ break;
+ }
+
+ /* Skip over any words for this argument. */
+ word += present;
+ }
+}
+
+static void pv_hypercall_print_args(const struct record_info *ri)
+{
+ int i, word;
+
+ for (i = 0, word = 1; i < 6 && word < ri->extra_words; i++) {
+ int present = pv_hypercall_arg_present(ri, i);
+
+ switch (present) {
+ case ARG_MISSING:
+ printf(" ??");
+ break;
+ case ARG_32BIT:
+ printf(" %08x", ri->d[word]);
+ break;
+ case ARG_64BIT:
+ printf(" %016"PRIu64"", ((uint64_t)ri->d[word + 1] << 32) |
ri->d[word]);
+ break;
+ }
+
+ word += present;
+ }
+}
+
+void pv_hypercall_v2_process(struct record_info *ri, struct pv_data *pv)
+{
+ int op = pv_hypercall_op(ri);
+
+ if(opt.summary_info) {
+ if(op < PV_HYPERCALL_MAX)
+ pv->hypercall_count[op]++;
+ }
+
+ if(opt.dump_all) {
+ uint64_t args[6];
+
+ if(op < HYPERCALL_MAX)
+ printf(" %s hypercall %2x (%s)",
+ ri->dump_header, op, hypercall_name[op]);
+ else
+ printf(" %s hypercall %2x",
+ ri->dump_header, op);
+
+ switch(op) {
+ case HYPERCALL_mmu_update:
+ pv_hypercall_gather_args(ri, args);
+ printf(" %d updates%s", (uint32_t)args[1] & ~MMU_UPDATE_PREEMPTED,
+ (args[1] & MMU_UPDATE_PREEMPTED) ? " (preempted)" : "");
+ break;
+ case HYPERCALL_multicall:
+ pv_hypercall_gather_args(ri, args);
+ printf(" %d calls", (uint32_t)args[1]);
+ break;
+ case HYPERCALL_grant_table_op:
+ pv_hypercall_gather_args(ri, args);
+ printf(" %s %d ops", grant_table_op_to_str(args[0]),
(uint32_t)args[2]);
+ break;
+ case HYPERCALL_vcpu_op:
+ pv_hypercall_gather_args(ri, args);
+ printf(" %s vcpu %d", vcpu_op_to_str(args[0]), (uint32_t)args[1]);
+ break;
+ case HYPERCALL_mmuext_op:
+ pv_hypercall_gather_args(ri, args);
+ printf(" %d ops", (uint32_t)args[1]);
+ break;
+ case HYPERCALL_sched_op:
+ pv_hypercall_gather_args(ri, args);
+ printf(" %s", sched_op_to_str(args[0]));
+ break;
+ default:
+ pv_hypercall_print_args(ri);
+ break;
+ }
+ printf("\n");
+ }
+}
+
void pv_process(struct pcpu_info *p)
{
struct record_info *ri = &p->ri;
@@ -6555,9 +6708,9 @@ void pv_process(struct pcpu_info *p)
case PV_PTWR_EMULATION_PAE:
pv_ptwr_emulation_process(ri, pv);
break;
- case PV_PAGE_FAULT:
- //pv_pf_process(ri, pv);
- //break;
+ case PV_HYPERCALL_V2:
+ pv_hypercall_v2_process(ri, pv);
+ break;
default:
pv_generic_process(ri, pv);
break;
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