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Message-ID: <20240212170107.60da326a@gandalf.local.home>
Date: Mon, 12 Feb 2024 17:01:07 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Daniel Bristot de Oliveira <bristot@...nel.org>, John Kacur
<jkacur@...hat.com>, limingming3 <limingming890315@...il.com>, LKML
<linux-kernel@...r.kernel.org>
Subject: [GIT PULL] tracing/tooling: Fixes for v6.8-rc4
Linus,
Tracing tooling updates for 6.8-rc4:
RTLA:
- rtla tools are exiting with a positive value when usage()
is called. Make them return 0 if the usage was called via
-h/--help.
- the -P priority sets the sched priority for rtla workload.
When the SCHED_OTHER scheduler is selected, it sets
the rt_priority instead of the nice parameter. Setting
the nice value is the correct thing, so fix it.
- rtla is failing to compile with clang due to unsupported
options from gcc. Adjusting the compiler/linker options
makes clang work properly.
- Remove the sched_getattr() unused function on utils.c.
- Fixes on variable initialization and size, reported by
clang.
Verification:
- rv is failing to compile with clang due to unsupported
options from gcc. Adjusting the compiler/linker options
makes clang work properly.
- Fix an uninitialized variable on in_kernel.c reported by
clang.
Please pull the latest trace-tools-v6.8-rc4 tree, which can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace.git
trace-tools-v6.8-rc4
Tag SHA1: 43f245e8613c3a071441ab907842c1b9b7812ee1
Head SHA1: b5f319360371087d52070d8f3fc7789e80ce69a6
Daniel Bristot de Oliveira (6):
tools/rtla: Fix Makefile compiler options for clang
tools/rtla: Fix uninitialized bucket/data->bucket_size warning
tools/rtla: Fix clang warning about mount_point var size
tools/rtla: Remove unused sched_getattr() function
tools/rv: Fix Makefile compiler options for clang
tools/rv: Fix curr_reactor uninitialized variable
John Kacur (1):
tools/rtla: Exit with EXIT_SUCCESS when help is invoked
limingming3 (1):
tools/rtla: Replace setting prio with nice for SCHED_OTHER
----
tools/tracing/rtla/Makefile | 7 ++++++-
tools/tracing/rtla/src/osnoise_hist.c | 9 ++++++---
tools/tracing/rtla/src/osnoise_top.c | 6 +++++-
tools/tracing/rtla/src/timerlat_hist.c | 9 ++++++---
tools/tracing/rtla/src/timerlat_top.c | 6 +++++-
tools/tracing/rtla/src/utils.c | 14 ++++----------
tools/tracing/rtla/src/utils.h | 2 ++
tools/verification/rv/Makefile | 7 ++++++-
tools/verification/rv/src/in_kernel.c | 2 +-
9 files changed, 41 insertions(+), 21 deletions(-)
---------------------------
diff --git a/tools/tracing/rtla/Makefile b/tools/tracing/rtla/Makefile
index 2456a399eb9a..afd18c678ff5 100644
--- a/tools/tracing/rtla/Makefile
+++ b/tools/tracing/rtla/Makefile
@@ -28,10 +28,15 @@ FOPTS := -flto=auto -ffat-lto-objects -fexceptions -fstack-protector-strong \
-fasynchronous-unwind-tables -fstack-clash-protection
WOPTS := -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -Wno-maybe-uninitialized
+ifeq ($(CC),clang)
+ FOPTS := $(filter-out -ffat-lto-objects, $(FOPTS))
+ WOPTS := $(filter-out -Wno-maybe-uninitialized, $(WOPTS))
+endif
+
TRACEFS_HEADERS := $$($(PKG_CONFIG) --cflags libtracefs)
CFLAGS := -O -g -DVERSION=\"$(VERSION)\" $(FOPTS) $(MOPTS) $(WOPTS) $(TRACEFS_HEADERS) $(EXTRA_CFLAGS)
-LDFLAGS := -ggdb $(EXTRA_LDFLAGS)
+LDFLAGS := -flto=auto -ggdb $(EXTRA_LDFLAGS)
LIBS := $$($(PKG_CONFIG) --libs libtracefs)
SRC := $(wildcard src/*.c)
diff --git a/tools/tracing/rtla/src/osnoise_hist.c b/tools/tracing/rtla/src/osnoise_hist.c
index 8f81fa007364..01870d50942a 100644
--- a/tools/tracing/rtla/src/osnoise_hist.c
+++ b/tools/tracing/rtla/src/osnoise_hist.c
@@ -135,8 +135,7 @@ static void osnoise_hist_update_multiple(struct osnoise_tool *tool, int cpu,
if (params->output_divisor)
duration = duration / params->output_divisor;
- if (data->bucket_size)
- bucket = duration / data->bucket_size;
+ bucket = duration / data->bucket_size;
total_duration = duration * count;
@@ -480,7 +479,11 @@ static void osnoise_hist_usage(char *usage)
for (i = 0; msg[i]; i++)
fprintf(stderr, "%s\n", msg[i]);
- exit(1);
+
+ if (usage)
+ exit(EXIT_FAILURE);
+
+ exit(EXIT_SUCCESS);
}
/*
diff --git a/tools/tracing/rtla/src/osnoise_top.c b/tools/tracing/rtla/src/osnoise_top.c
index f7c959be8677..457360db0767 100644
--- a/tools/tracing/rtla/src/osnoise_top.c
+++ b/tools/tracing/rtla/src/osnoise_top.c
@@ -331,7 +331,11 @@ static void osnoise_top_usage(struct osnoise_top_params *params, char *usage)
for (i = 0; msg[i]; i++)
fprintf(stderr, "%s\n", msg[i]);
- exit(1);
+
+ if (usage)
+ exit(EXIT_FAILURE);
+
+ exit(EXIT_SUCCESS);
}
/*
diff --git a/tools/tracing/rtla/src/timerlat_hist.c b/tools/tracing/rtla/src/timerlat_hist.c
index 47d3d8b53cb2..dbf154082f95 100644
--- a/tools/tracing/rtla/src/timerlat_hist.c
+++ b/tools/tracing/rtla/src/timerlat_hist.c
@@ -178,8 +178,7 @@ timerlat_hist_update(struct osnoise_tool *tool, int cpu,
if (params->output_divisor)
latency = latency / params->output_divisor;
- if (data->bucket_size)
- bucket = latency / data->bucket_size;
+ bucket = latency / data->bucket_size;
if (!context) {
hist = data->hist[cpu].irq;
@@ -546,7 +545,11 @@ static void timerlat_hist_usage(char *usage)
for (i = 0; msg[i]; i++)
fprintf(stderr, "%s\n", msg[i]);
- exit(1);
+
+ if (usage)
+ exit(EXIT_FAILURE);
+
+ exit(EXIT_SUCCESS);
}
/*
diff --git a/tools/tracing/rtla/src/timerlat_top.c b/tools/tracing/rtla/src/timerlat_top.c
index 1640f121baca..3e9af2c38688 100644
--- a/tools/tracing/rtla/src/timerlat_top.c
+++ b/tools/tracing/rtla/src/timerlat_top.c
@@ -375,7 +375,11 @@ static void timerlat_top_usage(char *usage)
for (i = 0; msg[i]; i++)
fprintf(stderr, "%s\n", msg[i]);
- exit(1);
+
+ if (usage)
+ exit(EXIT_FAILURE);
+
+ exit(EXIT_SUCCESS);
}
/*
diff --git a/tools/tracing/rtla/src/utils.c b/tools/tracing/rtla/src/utils.c
index c769d7b3842c..9ac71a66840c 100644
--- a/tools/tracing/rtla/src/utils.c
+++ b/tools/tracing/rtla/src/utils.c
@@ -238,12 +238,6 @@ static inline int sched_setattr(pid_t pid, const struct sched_attr *attr,
return syscall(__NR_sched_setattr, pid, attr, flags);
}
-static inline int sched_getattr(pid_t pid, struct sched_attr *attr,
- unsigned int size, unsigned int flags)
-{
- return syscall(__NR_sched_getattr, pid, attr, size, flags);
-}
-
int __set_sched_attr(int pid, struct sched_attr *attr)
{
int flags = 0;
@@ -479,13 +473,13 @@ int parse_prio(char *arg, struct sched_attr *sched_param)
if (prio == INVALID_VAL)
return -1;
- if (prio < sched_get_priority_min(SCHED_OTHER))
+ if (prio < MIN_NICE)
return -1;
- if (prio > sched_get_priority_max(SCHED_OTHER))
+ if (prio > MAX_NICE)
return -1;
sched_param->sched_policy = SCHED_OTHER;
- sched_param->sched_priority = prio;
+ sched_param->sched_nice = prio;
break;
default:
return -1;
@@ -536,7 +530,7 @@ int set_cpu_dma_latency(int32_t latency)
*/
static const int find_mount(const char *fs, char *mp, int sizeof_mp)
{
- char mount_point[MAX_PATH];
+ char mount_point[MAX_PATH+1];
char type[100];
int found = 0;
FILE *fp;
diff --git a/tools/tracing/rtla/src/utils.h b/tools/tracing/rtla/src/utils.h
index 04ed1e650495..d44513e6c66a 100644
--- a/tools/tracing/rtla/src/utils.h
+++ b/tools/tracing/rtla/src/utils.h
@@ -9,6 +9,8 @@
*/
#define BUFF_U64_STR_SIZE 24
#define MAX_PATH 1024
+#define MAX_NICE 20
+#define MIN_NICE -19
#define container_of(ptr, type, member)({ \
const typeof(((type *)0)->member) *__mptr = (ptr); \
diff --git a/tools/verification/rv/Makefile b/tools/verification/rv/Makefile
index 3d0f3888a58c..485f8aeddbe0 100644
--- a/tools/verification/rv/Makefile
+++ b/tools/verification/rv/Makefile
@@ -28,10 +28,15 @@ FOPTS := -flto=auto -ffat-lto-objects -fexceptions -fstack-protector-strong \
-fasynchronous-unwind-tables -fstack-clash-protection
WOPTS := -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -Wno-maybe-uninitialized
+ifeq ($(CC),clang)
+ FOPTS := $(filter-out -ffat-lto-objects, $(FOPTS))
+ WOPTS := $(filter-out -Wno-maybe-uninitialized, $(WOPTS))
+endif
+
TRACEFS_HEADERS := $$($(PKG_CONFIG) --cflags libtracefs)
CFLAGS := -O -g -DVERSION=\"$(VERSION)\" $(FOPTS) $(MOPTS) $(WOPTS) $(TRACEFS_HEADERS) $(EXTRA_CFLAGS) -I include
-LDFLAGS := -ggdb $(EXTRA_LDFLAGS)
+LDFLAGS := -flto=auto -ggdb $(EXTRA_LDFLAGS)
LIBS := $$($(PKG_CONFIG) --libs libtracefs)
SRC := $(wildcard src/*.c)
diff --git a/tools/verification/rv/src/in_kernel.c b/tools/verification/rv/src/in_kernel.c
index ad28582bcf2b..f04479ecc96c 100644
--- a/tools/verification/rv/src/in_kernel.c
+++ b/tools/verification/rv/src/in_kernel.c
@@ -210,9 +210,9 @@ static char *ikm_read_reactor(char *monitor_name)
static char *ikm_get_current_reactor(char *monitor_name)
{
char *reactors = ikm_read_reactor(monitor_name);
+ char *curr_reactor = NULL;
char *start;
char *end;
- char *curr_reactor;
if (!reactors)
return NULL;
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