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syscall log: log number of free physical pages before and after every system call

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Matheus
2024-04-21 20:16:38 -03:00
parent f827163056
commit 899186ea85
2 changed files with 8 additions and 2 deletions
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kernel-src/arch/x86-64/syscalllog.c
+3 -2
View File
@@ -121,6 +121,7 @@ static char *args[] = {
#endif #endif
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
char argbuff[768]; char argbuff[768];
@@ -130,7 +131,7 @@ __attribute__((no_caller_saved_registers)) void arch_syscall_log(int syscall, ui
proc_t *proc = thread->proc; proc_t *proc = thread->proc;
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\n\e[0m", proc->pid, thread->tid, syscall < SYSCALL_COUNT ? name[syscall] : "invalid syscall", argbuff); snprintf(printbuff, 1024, "\e[92msyscall: pid %d tid %d: %s: %s (%lu free pages)\n\e[0m", proc->pid, thread->tid, syscall < SYSCALL_COUNT ? name[syscall] : "invalid syscall", argbuff, freepagecount);
LOGSTR(printbuff); LOGSTR(printbuff);
#endif #endif
@@ -143,7 +144,7 @@ __attribute__((no_caller_saved_registers)) void arch_syscall_log_return(uint64_t
thread_t *thread = _cpu()->thread; thread_t *thread = _cpu()->thread;
proc_t *proc = thread->proc; proc_t *proc = thread->proc;
snprintf(printbuff, 1024, "\e[94msyscall return: pid %d tid %d: %lu %lu\n\e[0m", proc->pid, thread->tid, ret, errno); snprintf(printbuff, 1024, "\e[94msyscall return: pid %d tid %d: %lu %lu (%lu free pages)\n\e[0m", proc->pid, thread->tid, ret, errno, freepagecount);
LOGSTR(printbuff); LOGSTR(printbuff);
#endif #endif
} }
kernel-src/mm/pmm.c
+5
View File
@@ -9,6 +9,7 @@
uintptr_t hhdmbase; uintptr_t hhdmbase;
static size_t memorysize; static size_t memorysize;
static size_t pagecount; static size_t pagecount;
size_t freepagecount;
static spinlock_t freelistlock; static spinlock_t freelistlock;
static page_t *freelists[PMM_SECTION_COUNT]; static page_t *freelists[PMM_SECTION_COUNT];
@@ -69,6 +70,8 @@ static void insertinfreelist(page_t *page) {
*list = page; *list = page;
if (page->freenext) if (page->freenext)
page->freenext->freeprev = page; page->freenext->freeprev = page;
++freepagecount;
} }
static void removefromfreelist(page_t *page) { static void removefromfreelist(page_t *page) {
@@ -94,6 +97,8 @@ static void removefromfreelist(page_t *page) {
if (page->freenext) if (page->freenext)
page->freenext->freeprev = page->freeprev; page->freenext->freeprev = page->freeprev;
--freepagecount;
} }
void pmm_hold(void *addr) { void pmm_hold(void *addr) {