Revision 2293be58d6a18cab800e25e42081bacb75c05752 authored by Linus Torvalds on 26 February 2022, 20:10:17 UTC, committed by Linus Torvalds on 26 February 2022, 20:10:17 UTC
Pull tracing fixes from Steven Rostedt: - rtla (Real-Time Linux Analysis tool): - fix typo in man page - Update API -e to -E before it is released - Error message fix and memory leak fix - Partially uninline trace event soft disable to shrink text - Fix function graph start up test - Have triggers affect the trace instance they are in and not top level - Have osnoise sleep in the units it says it uses - Remove unused ftrace stub function - Remove event probe redundant info from event in the buffer - Fix group ownership setting in tracefs - Ensure trace buffer is minimum size to prevent crashes * tag 'trace-v5.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: rtla/osnoise: Fix error message when failing to enable trace instance rtla/osnoise: Free params at the exit rtla/hist: Make -E the short version of --entries tracing: Fix selftest config check for function graph start up test tracefs: Set the group ownership in apply_options() not parse_options() tracing/osnoise: Make osnoise_main to sleep for microseconds ftrace: Remove unused ftrace_startup_enable() stub tracing: Ensure trace buffer is at least 4096 bytes large tracing: Uninline trace_trigger_soft_disabled() partly eprobes: Remove redundant event type information tracing: Have traceon and traceoff trigger honor the instance tracing: Dump stacktrace trigger to the corresponding instance rtla: Fix systme -> system typo on man page
proc.c
// SPDX-License-Identifier: GPL-2.0
/*
* RTC subsystem, proc interface
*
* Copyright (C) 2005-06 Tower Technologies
* Author: Alessandro Zummo <a.zummo@towertech.it>
*
* based on arch/arm/common/rtctime.c
*/
#include <linux/module.h>
#include <linux/rtc.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include "rtc-core.h"
#define NAME_SIZE 10
#if defined(CONFIG_RTC_HCTOSYS_DEVICE)
static bool is_rtc_hctosys(struct rtc_device *rtc)
{
int size;
char name[NAME_SIZE];
size = snprintf(name, NAME_SIZE, "rtc%d", rtc->id);
if (size >= NAME_SIZE)
return false;
return !strncmp(name, CONFIG_RTC_HCTOSYS_DEVICE, NAME_SIZE);
}
#else
static bool is_rtc_hctosys(struct rtc_device *rtc)
{
return (rtc->id == 0);
}
#endif
static int rtc_proc_show(struct seq_file *seq, void *offset)
{
int err;
struct rtc_device *rtc = seq->private;
const struct rtc_class_ops *ops = rtc->ops;
struct rtc_wkalrm alrm;
struct rtc_time tm;
err = rtc_read_time(rtc, &tm);
if (err == 0) {
seq_printf(seq,
"rtc_time\t: %ptRt\n"
"rtc_date\t: %ptRd\n",
&tm, &tm);
}
err = rtc_read_alarm(rtc, &alrm);
if (err == 0) {
seq_printf(seq, "alrm_time\t: %ptRt\n", &alrm.time);
seq_printf(seq, "alrm_date\t: %ptRd\n", &alrm.time);
seq_printf(seq, "alarm_IRQ\t: %s\n",
alrm.enabled ? "yes" : "no");
seq_printf(seq, "alrm_pending\t: %s\n",
alrm.pending ? "yes" : "no");
seq_printf(seq, "update IRQ enabled\t: %s\n",
(rtc->uie_rtctimer.enabled) ? "yes" : "no");
seq_printf(seq, "periodic IRQ enabled\t: %s\n",
(rtc->pie_enabled) ? "yes" : "no");
seq_printf(seq, "periodic IRQ frequency\t: %d\n",
rtc->irq_freq);
seq_printf(seq, "max user IRQ frequency\t: %d\n",
rtc->max_user_freq);
}
seq_printf(seq, "24hr\t\t: yes\n");
if (ops->proc)
ops->proc(rtc->dev.parent, seq);
return 0;
}
void rtc_proc_add_device(struct rtc_device *rtc)
{
if (is_rtc_hctosys(rtc))
proc_create_single_data("driver/rtc", 0, NULL, rtc_proc_show,
rtc);
}
void rtc_proc_del_device(struct rtc_device *rtc)
{
if (is_rtc_hctosys(rtc))
remove_proc_entry("driver/rtc", NULL);
}
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