From d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:45:28 +0000
Subject: [PATCH] add boot partition size
---
kernel/arch/s390/kernel/perf_event.c | 22 ++++++++++------------
1 files changed, 10 insertions(+), 12 deletions(-)
diff --git a/kernel/arch/s390/kernel/perf_event.c b/kernel/arch/s390/kernel/perf_event.c
index 0d770e5..b922dc0 100644
--- a/kernel/arch/s390/kernel/perf_event.c
+++ b/kernel/arch/s390/kernel/perf_event.c
@@ -21,6 +21,7 @@
#include <asm/lowcore.h>
#include <asm/processor.h>
#include <asm/sysinfo.h>
+#include <asm/unwind.h>
const char *perf_pmu_name(void)
{
@@ -50,7 +51,7 @@
if (!stack)
return NULL;
- return (struct kvm_s390_sie_block *) stack->empty1[0];
+ return (struct kvm_s390_sie_block *)stack->empty1[1];
}
static bool is_in_guest(struct pt_regs *regs)
@@ -219,20 +220,17 @@
}
arch_initcall(service_level_perf_register);
-static int __perf_callchain_kernel(void *data, unsigned long address, int reliable)
-{
- struct perf_callchain_entry_ctx *entry = data;
-
- perf_callchain_store(entry, address);
- return 0;
-}
-
void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry,
struct pt_regs *regs)
{
- if (user_mode(regs))
- return;
- dump_trace(__perf_callchain_kernel, entry, NULL, regs->gprs[15]);
+ struct unwind_state state;
+ unsigned long addr;
+
+ unwind_for_each_frame(&state, current, regs, 0) {
+ addr = unwind_get_return_address(&state);
+ if (!addr || perf_callchain_store(entry, addr))
+ return;
+ }
}
/* Perf definitions for PMU event attributes in sysfs */
--
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