Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932074Ab1FTWRq (ORCPT ); Mon, 20 Jun 2011 18:17:46 -0400 Received: from claw.goop.org ([74.207.240.146]:53623 "EHLO claw.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755954Ab1FTWPZ (ORCPT ); Mon, 20 Jun 2011 18:15:25 -0400 From: Jeremy Fitzhardinge To: Xen Devel Cc: Konrad Rzeszutek Wilk , Steven Rostedt , Ingo Molnar , Linux Kernel Mailing List , Jeremy Fitzhardinge Subject: [PATCH 08/15] xen/trace: add segment desc tracing Date: Mon, 20 Jun 2011 15:15:04 -0700 Message-Id: <834e06a069d43f0cd34794326aaa7094cd53433b.1308607697.git.jeremy.fitzhardinge@citrix.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5415 Lines: 171 From: Jeremy Fitzhardinge Signed-off-by: Jeremy Fitzhardinge --- arch/x86/xen/enlighten.c | 16 +++++++++- include/trace/events/xen.h | 75 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 90 insertions(+), 1 deletions(-) diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index dd7b88f..fa4e2d2 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -341,6 +341,8 @@ static void xen_set_ldt(const void *addr, unsigned entries) struct mmuext_op *op; struct multicall_space mcs = xen_mc_entry(sizeof(*op)); + trace_xen_cpu_set_ldt(addr, entries); + op = mcs.args; op->cmd = MMUEXT_SET_LDT; op->arg1.linear_addr = (unsigned long)addr; @@ -496,6 +498,8 @@ static void xen_write_ldt_entry(struct desc_struct *dt, int entrynum, xmaddr_t mach_lp = arbitrary_virt_to_machine(&dt[entrynum]); u64 entry = *(u64 *)ptr; + trace_xen_cpu_write_ldt_entry(dt, entrynum, entry); + preempt_disable(); xen_mc_flush(); @@ -565,6 +569,8 @@ static void xen_write_idt_entry(gate_desc *dt, int entrynum, const gate_desc *g) unsigned long p = (unsigned long)&dt[entrynum]; unsigned long start, end; + trace_xen_cpu_write_idt_entry(dt, entrynum, g); + preempt_disable(); start = __this_cpu_read(idt_desc.address); @@ -619,6 +625,8 @@ static void xen_load_idt(const struct desc_ptr *desc) static DEFINE_SPINLOCK(lock); static struct trap_info traps[257]; + trace_xen_cpu_load_idt(desc); + spin_lock(&lock); __get_cpu_var(idt_desc) = *desc; @@ -637,6 +645,8 @@ static void xen_load_idt(const struct desc_ptr *desc) static void xen_write_gdt_entry(struct desc_struct *dt, int entry, const void *desc, int type) { + trace_xen_cpu_write_gdt_entry(dt, entry, desc, type); + preempt_disable(); switch (type) { @@ -665,6 +675,8 @@ static void xen_write_gdt_entry(struct desc_struct *dt, int entry, static void __init xen_write_gdt_entry_boot(struct desc_struct *dt, int entry, const void *desc, int type) { + trace_xen_cpu_write_gdt_entry(dt, entry, desc, type); + switch (type) { case DESC_LDT: case DESC_TSS: @@ -684,7 +696,9 @@ static void __init xen_write_gdt_entry_boot(struct desc_struct *dt, int entry, static void xen_load_sp0(struct tss_struct *tss, struct thread_struct *thread) { - struct multicall_space mcs = xen_mc_entry(0); + struct multicall_space mcs; + + mcs = xen_mc_entry(0); MULTI_stack_switch(mcs.mc, __KERNEL_DS, thread->sp0); xen_mc_issue(PARAVIRT_LAZY_CPU); } diff --git a/include/trace/events/xen.h b/include/trace/events/xen.h index 5811c24..b1f73c4 100644 --- a/include/trace/events/xen.h +++ b/include/trace/events/xen.h @@ -405,6 +405,81 @@ TRACE_EVENT(xen_mmu_pgd_unpin, TP_printk("mm %p pgd %p", __entry->mm, __entry->pgd) ); +/* CPU */ +TRACE_EVENT(xen_cpu_write_ldt_entry, + TP_PROTO(struct desc_struct *dt, int entrynum, u64 desc), + TP_ARGS(dt, entrynum, desc), + TP_STRUCT__entry( + __field(struct desc_struct *, dt) + __field(int, entrynum) + __field(u64, desc) + ), + TP_fast_assign(__entry->dt = dt; + __entry->entrynum = entrynum; + __entry->desc = desc; + ), + TP_printk("dt %p entrynum %d entry %016llx", + __entry->dt, __entry->entrynum, + (unsigned long long)__entry->desc) + ); + +TRACE_EVENT(xen_cpu_write_idt_entry, + TP_PROTO(gate_desc *dt, int entrynum, const gate_desc *ent), + TP_ARGS(dt, entrynum, ent), + TP_STRUCT__entry( + __field(gate_desc *, dt) + __field(int, entrynum) + ), + TP_fast_assign(__entry->dt = dt; + __entry->entrynum = entrynum; + ), + TP_printk("dt %p entrynum %d", + __entry->dt, __entry->entrynum) + ); + +TRACE_EVENT(xen_cpu_load_idt, + TP_PROTO(const struct desc_ptr *desc), + TP_ARGS(desc), + TP_STRUCT__entry( + __field(unsigned long, addr) + ), + TP_fast_assign(__entry->addr = desc->address), + TP_printk("addr %lx", __entry->addr) + ); + +TRACE_EVENT(xen_cpu_write_gdt_entry, + TP_PROTO(struct desc_struct *dt, int entrynum, const void *desc, int type), + TP_ARGS(dt, entrynum, desc, type), + TP_STRUCT__entry( + __field(struct desc_struct *, dt) + __field(int, entrynum) + __field(int, type) + __field(u64, desc) + ), + TP_fast_assign(__entry->dt = dt; + __entry->entrynum = entrynum; + __entry->type = type; + __entry->desc = *(u64 *)desc; + ), + TP_printk("dt %p entrynum %d type %d desc %016llx", + __entry->dt, __entry->entrynum, __entry->type, + (unsigned long long)__entry->desc) + ); + +TRACE_EVENT(xen_cpu_set_ldt, + TP_PROTO(const void *addr, unsigned entries), + TP_ARGS(addr, entries), + TP_STRUCT__entry( + __field(const void *, addr) + __field(unsigned, entries) + ), + TP_fast_assign(__entry->addr = addr; + __entry->entries = entries), + TP_printk("addr %p entries %u", + __entry->addr, __entry->entries) + ); + + #endif /* _TRACE_XEN_H */ /* This part must be outside protection */ -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/