threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
121 lines
2.3 KiB
C
121 lines
2.3 KiB
C
/*
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* Copyright (C) 2018 MediaTek Inc.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/preempt.h>
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#include <linux/trace_events.h>
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#include "rs_trace.h"
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#define LOGSIZE 32
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static unsigned long __read_mostly mark_addr;
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static int rs_update_tracemark(void)
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{
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if (mark_addr)
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return 1;
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mark_addr = kallsyms_lookup_name("tracing_mark_write");
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if (unlikely(!mark_addr))
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return 0;
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return 1;
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}
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void __rs_systrace_c(pid_t pid, int val, const char *fmt, ...)
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{
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char log[LOGSIZE];
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va_list args;
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int len;
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if (unlikely(!rs_update_tracemark()))
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return;
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va_start(args, fmt);
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len = vsnprintf(log, LOGSIZE, fmt, args);
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va_end(args);
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if (len == LOGSIZE)
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log[LOGSIZE - 1] = '\0';
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preempt_disable();
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event_trace_printk(mark_addr, "C|%d|%s|%d\n", pid, log, val);
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preempt_enable();
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}
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void __rs_systrace_c_uint64(pid_t pid, uint64_t val, const char *fmt, ...)
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{
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char log[LOGSIZE];
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va_list args;
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int len;
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if (unlikely(!rs_update_tracemark()))
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return;
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va_start(args, fmt);
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len = vsnprintf(log, LOGSIZE, fmt, args);
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va_end(args);
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if (len == LOGSIZE)
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log[LOGSIZE - 1] = '\0';
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preempt_disable();
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event_trace_printk(mark_addr, "C|%d|%s|%llu\n", pid, log, val);
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preempt_enable();
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}
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void __rs_systrace_b(pid_t tgid, const char *fmt, ...)
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{
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char log[LOGSIZE];
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va_list args;
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int len;
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if (unlikely(!rs_update_tracemark()))
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return;
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va_start(args, fmt);
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len = vsnprintf(log, LOGSIZE, fmt, args);
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va_end(args);
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if (len == LOGSIZE)
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log[LOGSIZE - 1] = '\0';
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preempt_disable();
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event_trace_printk(mark_addr, "B|%d|%s\n", tgid, log);
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preempt_enable();
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}
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void __rs_systrace_e(void)
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{
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if (unlikely(!rs_update_tracemark()))
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return;
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preempt_disable();
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event_trace_printk(mark_addr, "E\n");
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preempt_enable();
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}
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int rs_trace_init(void)
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{
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if (!rs_update_tracemark())
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return -1;
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return 0;
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}
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