Commit-ID: dab5855b12411334355ba21349a06700e4ae7a3b Gitweb: http://git.kernel.org/tip/dab5855b12411334355ba21349a06700e4ae7a3b Author: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> AuthorDate: Mon, 8 Jun 2009 21:11:57 +0300 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Mon, 8 Jun 2009 23:10:43 +0200 perf_counter: Add mmap event hooks to mprotect() Some JIT compilers allocate memory for generated code with posix_memalign() + mprotect() so we need to hook into mprotect() to make sure 'perf' is aware that we're executing code in anonymous memory. [ penberg@xxxxxxxxxxxxxx: move the hook to sys_mprotect() ] Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Signed-off-by: Pekka Enberg <penberg@xxxxxxxxxxxxxx> LKML-Reference: <Pine.LNX.4.64.0906082111030.12407@xxxxxxxxxxxxxxxxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- mm/mprotect.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/mm/mprotect.c b/mm/mprotect.c index 258197b..d80311b 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -23,6 +23,7 @@ #include <linux/swapops.h> #include <linux/mmu_notifier.h> #include <linux/migrate.h> +#include <linux/perf_counter.h> #include <asm/uaccess.h> #include <asm/pgtable.h> #include <asm/cacheflush.h> @@ -299,6 +300,7 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len, error = mprotect_fixup(vma, &prev, nstart, tmp, newflags); if (error) goto out; + perf_counter_mmap(vma); nstart = tmp; if (nstart < prev->vm_end) -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html