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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-21 07:07:17 -1000
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-21 07:07:17 -1000
commit401c58fcbbf570e7e4a8ee0e21ffd829deb4de0b (patch)
tree6c61f2d3288f0f299e41e70b79bf91b99ae27764 /arch
parent7b08d618a232aa3bfc538cf1eccd9ce0c239bf03 (diff)
parentcf230918cda19532e4a5cc4f0d5c82fa7e5e94f6 (diff)
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar: "This is larger than usual: the main reason are the ARM symbol lookup speedups that came in late and were hard to resist. There's also a kprobes fix and various tooling fixes, plus the minimal re-enablement of the mmap2 support interface" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits) x86/kprobes: Fix build errors and blacklist context_track_user perf tests: Add test for closing dso objects on EMFILE error perf tests: Add test for caching dso file descriptors perf tests: Allow reuse of test_file function perf tests: Spawn child for each test perf tools: Add dso__data_* interface descriptons perf tools: Allow to close dso fd in case of open failure perf tools: Add file size check and factor dso__data_read_offset perf tools: Cache dso data file descriptor perf tools: Add global count of opened dso objects perf tools: Add global list of opened dso objects perf tools: Add data_fd into dso object perf tools: Separate dso data related variables perf tools: Cache register accesses for unwind processing perf record: Fix to honor user freq/interval properly perf timechart: Reflow documentation perf probe: Improve error messages in --line option perf probe: Improve an error message of perf probe --vars mode perf probe: Show error code and description in verbose mode perf probe: Improve error message for unknown member of data structure ...
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/traps.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index c6eb418c5627..0d0e922fafc1 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -343,6 +343,7 @@ dotraplinkage void notrace do_int3(struct pt_regs *regs, long error_code)
if (poke_int3_handler(regs))
return;
+ prev_state = exception_enter();
#ifdef CONFIG_KGDB_LOW_LEVEL_TRAP
if (kgdb_ll_trap(DIE_INT3, "int3", regs, error_code, X86_TRAP_BP,
SIGTRAP) == NOTIFY_STOP)
@@ -351,9 +352,8 @@ dotraplinkage void notrace do_int3(struct pt_regs *regs, long error_code)
#ifdef CONFIG_KPROBES
if (kprobe_int3_handler(regs))
- return;
+ goto exit;
#endif
- prev_state = exception_enter();
if (notify_die(DIE_INT3, "int3", regs, error_code, X86_TRAP_BP,
SIGTRAP) == NOTIFY_STOP)
@@ -433,6 +433,8 @@ dotraplinkage void do_debug(struct pt_regs *regs, long error_code)
unsigned long dr6;
int si_code;
+ prev_state = exception_enter();
+
get_debugreg(dr6, 6);
/* Filter out all the reserved bits which are preset to 1 */
@@ -465,7 +467,6 @@ dotraplinkage void do_debug(struct pt_regs *regs, long error_code)
if (kprobe_debug_handler(regs))
goto exit;
#endif
- prev_state = exception_enter();
if (notify_die(DIE_DEBUG, "debug", regs, (long)&dr6, error_code,
SIGTRAP) == NOTIFY_STOP)