From 2a0c481695b7387eb147fb0b5b655f0ef43e5a76 Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Tue, 27 Sep 2011 18:35:42 -0400 Subject: [PATCH] Shrink stack size usage Signed-off-by: Mathieu Desnoyers --- lttng-syscalls.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/lttng-syscalls.c b/lttng-syscalls.c index e032e940..9de3c079 100644 --- a/lttng-syscalls.c +++ b/lttng-syscalls.c @@ -271,16 +271,18 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id) } } +/* noinline to diminish caller stack size */ static int fill_table(const struct trace_syscall_entry *table, size_t table_len, struct ltt_event **chan_table, struct ltt_channel *chan, void *filter) { + const struct lttng_event_desc *desc; unsigned int i; /* Allocate events for each syscall, insert into table */ for (i = 0; i < table_len; i++) { struct lttng_kernel_event ev; - const struct lttng_event_desc *desc = table[i].desc; + desc = table[i].desc; if (!desc) { /* Unknown syscall */ @@ -313,6 +315,7 @@ int fill_table(const struct trace_syscall_entry *table, size_t table_len, int lttng_syscalls_register(struct ltt_channel *chan, void *filter) { + struct lttng_kernel_event ev; int ret; wrapper_vmalloc_sync_all(); @@ -335,7 +338,6 @@ int lttng_syscalls_register(struct ltt_channel *chan, void *filter) } #endif if (!chan->sc_unknown) { - struct lttng_kernel_event ev; const struct lttng_event_desc *desc = &__event_desc___sys_unknown; @@ -351,7 +353,6 @@ int lttng_syscalls_register(struct ltt_channel *chan, void *filter) } if (!chan->sc_compat_unknown) { - struct lttng_kernel_event ev; const struct lttng_event_desc *desc = &__event_desc___compat_sys_unknown; @@ -367,7 +368,6 @@ int lttng_syscalls_register(struct ltt_channel *chan, void *filter) } if (!chan->sc_exit) { - struct lttng_kernel_event ev; const struct lttng_event_desc *desc = &__event_desc___exit_syscall; -- 2.34.1