linux-kernel - [PATCH RFC 3/8] arm64: stacktrace: Make callbacks use new prototype with frame info

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Message-Id: <20220418132217.1573072-4-zhe.he@windriver.com>
Date:   Mon, 18 Apr 2022 21:22:12 +0800
From:   He Zhe <zhe.he@...driver.com>
To:     catalin.marinas@....com, will@...nel.org, mark.rutland@....com,
        tglx@...utronix.de, bp@...en8.de, dave.hansen@...ux.intel.com,
        keescook@...omium.org, alexander.shishkin@...ux.intel.com,
        jolsa@...nel.org, namhyung@...nel.org, benh@...nel.crashing.org,
        paulus@...ba.org, borntraeger@...ux.ibm.com, svens@...ux.ibm.com,
        hpa@...or.com
Cc:     x86@...nel.org, linux-arm-kernel@...ts.infradead.org,
        linuxppc-dev@...ts.ozlabs.org, linux-riscv@...ts.infradead.org,
        linux-s390@...r.kernel.org, linux-perf-users@...r.kernel.org,
        linux-kernel@...r.kernel.org, zhe.he@...driver.com
Subject: [PATCH RFC 3/8] arm64: stacktrace: Make callbacks use new prototype with frame info

stack_trace_consume_fn has been changed to
bool (*stack_trace_consume_fn)(void *cookie, struct frame_info *fi);
to be able to pass more information.

Turn to use pc in struct frame_info in arch_stack_walk callbacks without
functinoal change.

Signed-off-by: He Zhe <zhe.he@...driver.com>
---
 arch/arm64/kernel/perf_callchain.c | 4 ++--
 arch/arm64/kernel/process.c        | 6 +++---
 arch/arm64/kernel/return_address.c | 4 ++--
 arch/arm64/kernel/time.c           | 6 +++---
 4 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/arch/arm64/kernel/perf_callchain.c b/arch/arm64/kernel/perf_callchain.c
index 65b196e3ca6c..d32918b34c0c 100644
--- a/arch/arm64/kernel/perf_callchain.c
+++ b/arch/arm64/kernel/perf_callchain.c
@@ -132,10 +132,10 @@ void perf_callchain_user(struct perf_callchain_entry_ctx *entry,
 	}
 }
 
-static bool callchain_trace(void *data, unsigned long pc)
+static bool callchain_trace(void *data, struct frame_info *fi)
 {
 	struct perf_callchain_entry_ctx *entry = data;
-	return perf_callchain_store(entry, pc) == 0;
+	return perf_callchain_store(entry, fi->pc) == 0;
 }
 
 void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry,
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 7fa97df55e3a..e96a8a614a1a 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -527,12 +527,12 @@ struct wchan_info {
 	int		count;
 };
 
-static bool get_wchan_cb(void *arg, unsigned long pc)
+static bool get_wchan_cb(void *arg, struct frame_info *fi)
 {
 	struct wchan_info *wchan_info = arg;
 
-	if (!in_sched_functions(pc)) {
-		wchan_info->pc = pc;
+	if (!in_sched_functions(fi->pc)) {
+		wchan_info->pc = fi->pc;
 		return false;
 	}
 	return wchan_info->count++ < 16;
diff --git a/arch/arm64/kernel/return_address.c b/arch/arm64/kernel/return_address.c
index 68330017d04f..ec9be91623c4 100644
--- a/arch/arm64/kernel/return_address.c
+++ b/arch/arm64/kernel/return_address.c
@@ -18,12 +18,12 @@ struct return_address_data {
 	void *addr;
 };
 
-static bool save_return_addr(void *d, unsigned long pc)
+static bool save_return_addr(void *d, struct frame_info *fi)
 {
 	struct return_address_data *data = d;
 
 	if (!data->level) {
-		data->addr = (void *)pc;
+		data->addr = (void *)fi->pc;
 		return false;
 	} else {
 		--data->level;
diff --git a/arch/arm64/kernel/time.c b/arch/arm64/kernel/time.c
index b5855eb7435d..6b1a9de7c852 100644
--- a/arch/arm64/kernel/time.c
+++ b/arch/arm64/kernel/time.c
@@ -32,13 +32,13 @@
 #include <asm/thread_info.h>
 #include <asm/paravirt.h>
 
-static bool profile_pc_cb(void *arg, unsigned long pc)
+static bool profile_pc_cb(void *arg, struct frame_info *fi)
 {
 	unsigned long *prof_pc = arg;
 
-	if (in_lock_functions(pc))
+	if (in_lock_functions(fi->pc))
 		return true;
-	*prof_pc = pc;
+	*prof_pc = fi->pc;
 	return false;
 }
 
-- 
2.25.1