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perfctr_stop: add flags to no 'disable_intens'

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The original fujitsu code added a whole new ihk_mc_perfctr_stop_first
function, duplicating a lot of code - add a flag to existing function
instead.

Change-Id: Ic9ce0236d68f967ff72cf88e5d9f1bda5c98aa1b
Fujitsu: POSTK_DEBUG_ARCH_DEP_107
This commit is contained in:
Dominique Martinet
2019-01-29 15:10:55 +09:00
committed by Dominique Martinet
parent d0d99adfb3
commit 34a995d290
5 changed files with 32 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
arch/arm64/kernel/perfctr.c
View File

@@ -148,30 +148,32 @@ int ihk_mc_perfctr_start(unsigned long counter_mask)
return ret; return ret;
} }
int ihk_mc_perfctr_stop(unsigned long counter_mask) int ihk_mc_perfctr_stop(unsigned long counter_mask, int flags)
{ {
int ret = 0; int i = 0;
int counter;
unsigned long counter_bit;
for (counter = 0, counter_bit = 1; for (i = 0; i < sizeof(counter_mask) * BITS_PER_BYTE; i++) {
counter_bit < counter_mask; if (!(counter_mask & (1UL << i)))
counter++, counter_bit <<= 1) {
if (!(counter_mask & counter_bit))
continue; continue;
ret = cpu_pmu.disable_counter(counter); int ret = 0;
if (ret < 0)
break;
// ihk_mc_perfctr_startが呼ばれるときには、 ret = cpu_pmu.disable_counter(i);
// init系関数が呼ばれるのでdisableにする。 if (ret < 0) {
ret = cpu_pmu.disable_intens(counter); continue;
if (ret < 0) }
break;
if (flags & IHK_MC_PERFCTR_DISABLE_INTERRUPT) {
// when ihk_mc_perfctr_start is called,
// ihk_mc_perfctr_init is also called so disable
// interrupt
ret = cpu_pmu.disable_intens(i);
if (ret < 0) {
continue;
}
}
} }
return 0;
return ret < 0 ? ret : 0;
} }
int ihk_mc_perfctr_reset(int counter) int ihk_mc_perfctr_reset(int counter)

2
arch/x86_64/kernel/perfctr.c
View File

@@ -318,7 +318,7 @@ int ihk_mc_perfctr_start(unsigned long counter_mask)
goto fn_exit; goto fn_exit;
} }
int ihk_mc_perfctr_stop(unsigned long counter_mask) int ihk_mc_perfctr_stop(unsigned long counter_mask, int flags)
{ {
int ret = 0; int ret = 0;
unsigned long value; unsigned long value;

5
kernel/host.c
View File

@@ -729,7 +729,7 @@ static int syscall_packet_handler(struct ihk_ikc_channel_desc *c,
break; break;
} }
ret = ihk_mc_perfctr_stop(1 << pcd->target_cntr); ret = ihk_mc_perfctr_stop(1 << pcd->target_cntr, 0);
if (ret != 0) { if (ret != 0) {
break; break;
} }
@@ -742,7 +742,8 @@ static int syscall_packet_handler(struct ihk_ikc_channel_desc *c,
break; break;
case PERF_CTRL_DISABLE: case PERF_CTRL_DISABLE:
ret = ihk_mc_perfctr_stop(pcd->target_cntr_mask); ret = ihk_mc_perfctr_stop(pcd->target_cntr_mask,
IHK_MC_PERFCTR_DISABLE_INTERRUPT);
break; break;
case PERF_CTRL_GET: case PERF_CTRL_GET:

8
kernel/syscall.c
View File

@@ -3974,7 +3974,7 @@ perf_stop(struct mc_perf_event *event)
} }
if (counter_mask) { if (counter_mask) {
ihk_mc_perfctr_stop(counter_mask); ihk_mc_perfctr_stop(counter_mask, 0);
cpu_local_var(current)->proc->monitoring_event = NULL; cpu_local_var(current)->proc->monitoring_event = NULL;
cpu_local_var(current)->proc->perf_status = PP_NONE; cpu_local_var(current)->proc->perf_status = PP_NONE;
} }
@@ -9302,13 +9302,15 @@ SYSCALL_DECLARE(pmc_start)
SYSCALL_DECLARE(pmc_stop) SYSCALL_DECLARE(pmc_stop)
{ {
unsigned long counter = ihk_mc_syscall_arg0(ctx); unsigned long counter = ihk_mc_syscall_arg0(ctx);
return ihk_mc_perfctr_stop((int)counter); return ihk_mc_perfctr_stop((int)counter,
IHK_MC_PERFCTR_DISABLE_INTERRUPT);
} }
#else #else
SYSCALL_DECLARE(pmc_stop) SYSCALL_DECLARE(pmc_stop)
{ {
unsigned long counter = ihk_mc_syscall_arg0(ctx); unsigned long counter = ihk_mc_syscall_arg0(ctx);
return ihk_mc_perfctr_stop(1 << counter); return ihk_mc_perfctr_stop(1 << counter,
IHK_MC_PERFCTR_DISABLE_INTERRUPT);
} }
#endif /*POSTK_DEBUG_TEMP_FIX_30*/ #endif /*POSTK_DEBUG_TEMP_FIX_30*/

4
lib/include/ihk/perfctr.h
View File

@@ -55,6 +55,8 @@ enum ihk_perfctr_type {
PERFCTR_MAX_TYPE, PERFCTR_MAX_TYPE,
}; };
#define IHK_MC_PERFCTR_DISABLE_INTERRUPT 1
#ifdef POSTK_DEBUG_TEMP_FIX_29 #ifdef POSTK_DEBUG_TEMP_FIX_29
int ihk_mc_perfctr_init(int counter, uint64_t config, int mode); int ihk_mc_perfctr_init(int counter, uint64_t config, int mode);
int ihk_mc_perfctr_init_raw(int counter, uint64_t config, int mode); int ihk_mc_perfctr_init_raw(int counter, uint64_t config, int mode);
@@ -64,7 +66,7 @@ int ihk_mc_perfctr_init_raw(int counter, unsigned int code, int mode);
#endif/*POSTK_DEBUG_TEMP_FIX_29*/ #endif/*POSTK_DEBUG_TEMP_FIX_29*/
int ihk_mc_perfctr_set_extra(struct mc_perf_event *event); int ihk_mc_perfctr_set_extra(struct mc_perf_event *event);
int ihk_mc_perfctr_start(unsigned long counter_mask); int ihk_mc_perfctr_start(unsigned long counter_mask);
int ihk_mc_perfctr_stop(unsigned long counter_mask); int ihk_mc_perfctr_stop(unsigned long counter_mask, int flags);
int ihk_mc_perfctr_reset(int counter); int ihk_mc_perfctr_reset(int counter);
int ihk_mc_perfctr_set(int counter, long value); int ihk_mc_perfctr_set(int counter, long value);
int ihk_mc_perfctr_read_mask(unsigned long counter_mask, unsigned long *value); int ihk_mc_perfctr_read_mask(unsigned long counter_mask, unsigned long *value);