From b1f77b908b1d2a6f40c8bdddf5811cdfe06ca945 Mon Sep 17 00:00:00 2001
From: Tom <tom.meyer@fu-berlin.de>
Date: Tue, 12 Mar 2019 14:48:51 +0100
Subject: [PATCH] syscall from kernel fix attempt
---
kernel/sched/perf_error_detection.c | 13 +++++++++++--
kernel/sched/perf_error_detection.h | 3 ++-
sound/oss/dmabuf.c | 2 +-
3 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/kernel/sched/perf_error_detection.c b/kernel/sched/perf_error_detection.c
index 6b2927eea66a..0e1dd0fde030 100644
--- a/kernel/sched/perf_error_detection.c
+++ b/kernel/sched/perf_error_detection.c
@@ -81,7 +81,16 @@ void overflow_handler(int signum,siginfo_t *oh, void *blah) {
}
int perf_event_open(struct perf_event_attr *hw_event_uptr, pid_t pid, int cpu, int group_fd, unsigned long flags) {
+ mm_segment_t fs;
+ int ret;
- return syscall(__NR_perf_event_open,hw_event_uptr, pid, cpu,
- group_fd, flags);
+ fs = get_fs(); /* save previous value */
+
+ set_fs (get_ds()); /* use kernel limit */
+
+ ret = syscall(__NR_perf_event_open,hw_event_uptr, pid, cpu, group_fd, flags);
+
+ set_fs(fs);
+
+ return ret;
}
diff --git a/kernel/sched/perf_error_detection.h b/kernel/sched/perf_error_detection.h
index fd5ccf445a85..a8cb9e6351dc 100644
--- a/kernel/sched/perf_error_detection.h
+++ b/kernel/sched/perf_error_detection.h
@@ -5,7 +5,8 @@
#include "sched.h"
#include <linux/signal.h>
#include <linux/ioctl.h>
-#include <stdio.h>
+#include <linux/fs.h>
+
//#include <include/linux/smp.h>
#endif
diff --git a/sound/oss/dmabuf.c b/sound/oss/dmabuf.c
index c5dd396c66a2..92866d436ed5 100644
--- a/sound/oss/dmabuf.c
+++ b/sound/oss/dmabuf.c
@@ -19,7 +19,7 @@
* an explicit wake_up. The return value from schedule_timeout
* can be used instead; if 0, the wakeup was due to the timeout.
*
- * Rob Riggs Added persistent DMA buffers (1998/10/17)
+ * Rob Riggs Added persistent DMA buffers (1998/10/17)#include <asm/segment.h>
*/
#define BE_CONSERVATIVE
--
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