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syscallog: hold a lock to synchronize logging in smp

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Matheus
2024-09-17 23:23:50 -03:00
parent a56bfd2134
commit 216a2e8d01
1 changed files with 9 additions and 0 deletions
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kernel-src/arch/x86-64/syscalllog.c
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@@ -200,6 +200,7 @@ static char *args[] = {
#endif #endif
static spinlock_t lock;
extern size_t freepagecount; extern size_t freepagecount;
__attribute__((no_caller_saved_registers)) void arch_syscall_log(int syscall, uint64_t a1, uint64_t a2, uint64_t a3, uint64_t a4, uint64_t a5, uint64_t a6) { __attribute__((no_caller_saved_registers)) void arch_syscall_log(int syscall, uint64_t a1, uint64_t a2, uint64_t a3, uint64_t a4, uint64_t a5, uint64_t a6) {
#ifdef SYSCALL_LOGGING #ifdef SYSCALL_LOGGING
@@ -211,7 +212,11 @@ __attribute__((no_caller_saved_registers)) void arch_syscall_log(int syscall, ui
snprintf(argbuff, 768, syscall < SYSCALL_COUNT ? args[syscall] : "N/A", a1, a2, a3, a4, a5, a6); snprintf(argbuff, 768, syscall < SYSCALL_COUNT ? args[syscall] : "N/A", a1, a2, a3, a4, a5, a6);
snprintf(printbuff, 1024, "\e[92msyscall: pid %d tid %d: %s: %s (%lu cached pages, %lu free pages)\n\e[0m", proc->pid, thread->tid, syscall < SYSCALL_COUNT ? name[syscall] : "invalid syscall", argbuff, vmmcache_cachedpages, freepagecount); snprintf(printbuff, 1024, "\e[92msyscall: pid %d tid %d: %s: %s (%lu cached pages, %lu free pages)\n\e[0m", proc->pid, thread->tid, syscall < SYSCALL_COUNT ? name[syscall] : "invalid syscall", argbuff, vmmcache_cachedpages, freepagecount);
arch_interrupt_disable();
spinlock_acquire(&lock);
LOGSTR(printbuff); LOGSTR(printbuff);
spinlock_release(&lock);
arch_interrupt_enable();
#endif #endif
} }
@@ -223,6 +228,10 @@ __attribute__((no_caller_saved_registers)) void arch_syscall_log_return(uint64_t
proc_t *proc = thread->proc; proc_t *proc = thread->proc;
snprintf(printbuff, 1024, "\e[94msyscall return: pid %d tid %d: %lu %s (%lu cached pages, %lu free pages)\n\e[0m", proc->pid, thread->tid, ret, strerror(errno), vmmcache_cachedpages, freepagecount); snprintf(printbuff, 1024, "\e[94msyscall return: pid %d tid %d: %lu %s (%lu cached pages, %lu free pages)\n\e[0m", proc->pid, thread->tid, ret, strerror(errno), vmmcache_cachedpages, freepagecount);
arch_interrupt_disable();
spinlock_acquire(&lock);
LOGSTR(printbuff); LOGSTR(printbuff);
spinlock_release(&lock);
arch_interrupt_enable();
#endif #endif
} }