hv: hv_main: clean up HV_DEBUG usage

- Remove the usage of HV_DEBUG in hv_main.c
The usage of HV_DEBUG in hv_main.c is for the shell command 'vmexit'.
Since vmexit info has been captured by acrntrace, there is no need to
keep this duplicated feature in shell command.

Tracked-On: #861
Signed-off-by: Shiqing Gao <shiqing.gao@intel.com>
Reviewed-by: Eddie Dong <eddie.dong@intel.com>
Reviewed-by: Yin Fengwei <fengwei.yin@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>

Author: shiqingg

hypervisor/common/hv_main.c

@@ -19,9 +19,6 @@ static void run_vcpu_pre_work(struct acrn_vcpu *vcpu)
 
 void vcpu_thread(struct acrn_vcpu *vcpu)
 {
-#ifdef HV_DEBUG
-	uint64_t vmexit_begin = 0UL, vmexit_end = 0UL;
-#endif
 	uint32_t basic_exit_reason = 0U;
 	uint64_t tsc_aux_hyp_cpu = (uint64_t) vcpu->pcpu_id;
 	int32_t ret = 0;
@@ -61,13 +58,6 @@ void vcpu_thread(struct acrn_vcpu *vcpu)
 			continue;
 		}
 
-#ifdef HV_DEBUG
-		vmexit_end = rdtsc();
-		if (vmexit_begin != 0UL) {
-			per_cpu(vmexit_time, vcpu->pcpu_id)[basic_exit_reason]
-				+= (vmexit_end - vmexit_begin);
-		}
-#endif
 		TRACE_2L(TRACE_VM_ENTER, 0UL, 0UL);
 
 		profiling_vmenter_handler(vcpu);
@@ -85,10 +75,6 @@ void vcpu_thread(struct acrn_vcpu *vcpu)
 			continue;
 		}
 
-#ifdef HV_DEBUG
-		vmexit_begin = rdtsc();
-#endif
-
 		vcpu->arch.nrexits++;
 		/* Save guest TSC_AUX */
 		cpu_msr_read(MSR_IA32_TSC_AUX, &vcpu->msr_tsc_aux_guest);
@@ -106,68 +92,8 @@ void vcpu_thread(struct acrn_vcpu *vcpu)
 			continue;
 		}
 
-#ifdef HV_DEBUG
-		per_cpu(vmexit_cnt, vcpu->pcpu_id)[basic_exit_reason]++;
-#endif
-
 		TRACE_2L(TRACE_VM_EXIT, basic_exit_reason, vcpu_get_rip(vcpu));
 
 		profiling_vmexit_handler(vcpu, basic_exit_reason);
 	} while (1);
 }
-
-#ifdef HV_DEBUG
-void get_vmexit_profile(char *str_arg, size_t str_max)
-{
-	char *str = str_arg;
-	uint16_t cpu, i;
-	size_t len, size = str_max;
-
-	len = snprintf(str, size, "\r\nNow(us) = %16lld\r\n", ticks_to_us(rdtsc()));
-	if (len >= size) {
-		goto overflow;
-	}
-	size -= len;
-	str += len;
-
-	len = snprintf(str, size, "\r\nREASON");
-	if (len >= size) {
-		goto overflow;
-	}
-	size -= len;
-	str += len;
-
-	for (cpu = 0U; cpu < phys_cpu_num; cpu++) {
-		len = snprintf(str, size, "\t      CPU%hu\t        US", cpu);
-		if (len >= size) {
-			goto overflow;
-		}
-		size -= len;
-		str += len;
-	}
-
-	for (i = 0U; i < 64U; i++) {
-		len = snprintf(str, size, "\r\n0x%x", i);
-		if (len >= size) {
-			goto overflow;
-		}
-		size -= len;
-		str += len;
-		for (cpu = 0U; cpu < phys_cpu_num; cpu++) {
-			len = snprintf(str, size, "\t%10lld\t%10lld", per_cpu(vmexit_cnt, cpu)[i],
-				ticks_to_us(per_cpu(vmexit_time, cpu)[i]));
-			if (len >= size) {
-				goto overflow;
-			}
-
-			size -= len;
-			str += len;
-		}
-	}
-	snprintf(str, size, "\r\n");
-	return;
-
-overflow:
-	printf("buffer size could not be enough! please check!\n");
-}
-#endif /* HV_DEBUG */

hypervisor/debug/shell.c

@@ -29,7 +29,6 @@ static int shell_show_cpu_int(__unused int argc, __unused char **argv);
 static int shell_show_ptdev_info(__unused int argc, __unused char **argv);
 static int shell_show_vioapic_info(int argc, char **argv);
 static int shell_show_ioapic_info(__unused int argc, __unused char **argv);
-static int shell_show_vmexit_profile(__unused int argc, __unused char **argv);
 static int shell_dump_logbuf(int argc, char **argv);
 static int shell_loglevel(int argc, char **argv);
 static int shell_cpuid(int argc, char **argv);
@@ -96,12 +95,6 @@ static struct shell_cmd shell_cmds[] = {
 		.help_str	= SHELL_CMD_IOAPIC_HELP,
 		.fcn		= shell_show_ioapic_info,
 	},
-	{
-		.str		= SHELL_CMD_VMEXIT,
-		.cmd_param	= SHELL_CMD_VMEXIT_PARAM,
-		.help_str	= SHELL_CMD_VMEXIT_HELP,
-		.fcn		= shell_show_vmexit_profile,
-	},
 	{
 		.str		= SHELL_CMD_LOGDUMP,
 		.cmd_param	= SHELL_CMD_LOGDUMP_PARAM,
@@ -807,14 +800,6 @@ static int shell_show_ioapic_info(__unused int argc, __unused char **argv)
 	return err;
 }
 
-static int shell_show_vmexit_profile(__unused int argc, __unused char **argv)
-{
-	get_vmexit_profile(shell_log_buf, SHELL_LOG_BUF_SIZE);
-	shell_puts(shell_log_buf);
-
-	return 0;
-}
-
 static int shell_dump_logbuf(int argc, char **argv)
 {
 	uint16_t pcpu_id;

hypervisor/debug/shell_priv.h

@@ -78,10 +78,6 @@ struct shell {
 #define SHELL_CMD_VIOAPIC_PARAM		"<vm id>"
 #define SHELL_CMD_VIOAPIC_HELP		"show vioapic info"
 
-#define SHELL_CMD_VMEXIT		"vmexit"
-#define SHELL_CMD_VMEXIT_PARAM		NULL
-#define SHELL_CMD_VMEXIT_HELP		"show vmexit profiling"
-
 #define SHELL_CMD_LOGDUMP		"logdump"
 #define SHELL_CMD_LOGDUMP_PARAM		"<pcpu id>"
 #define SHELL_CMD_LOGDUMP_HELP		"log buffer dump"

hypervisor/include/arch/x86/per_cpu.h

@@ -27,8 +27,6 @@ struct per_cpu_region {
 	char logbuf[LOG_MESSAGE_MAX_SIZE];
 	bool is_early_logbuf;
 	char early_logbuf[CONFIG_LOG_BUF_SIZE];
-	uint64_t vmexit_cnt[64];
-	uint64_t vmexit_time[64];
 	uint32_t npk_log_ref;
 #endif
 	uint64_t irq_count[NR_IRQS];